ecos: packages/io/flash/current/src/flash.c annotate

annotate packages/io/flash/current/src/flash.c @ 2633:592d727733df

* src/flash.c (cyg_flash_init): Allow repeated calls to change the printf function for all devices. There are times you don't any output, eg you are downloading an image over the serial port.

author	jlarmour
date	Tue, 18 Nov 2008 01:57:58 +0000
parents	a2f5434df2cb
children	74dbf4c3f2e1

rev	line source
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	2 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	3 // flash.c
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	4 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	5 // Flash programming
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	6 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	7 //==========================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	8 //####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	9 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	11 // Copyright (C) 2004 Andrew Lunn
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	12 // Copyright (C) 2004, 2005, 2006 eCosCentric Ltd.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	13 // Copyright (C) 2003 Gary Thomas
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	15 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	16 // eCos is free software; you can redistribute it and/or modify it under
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	17 // the terms of the GNU General Public License as published by the Free
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	18 // Software Foundation; either version 2 or (at your option) any later version.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	19 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	20 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	21 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	23 // for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	24 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	25 // You should have received a copy of the GNU General Public License along
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	26 // with eCos; if not, write to the Free Software Foundation, Inc.,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	28 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	29 // As a special exception, if other files instantiate templates or use macros
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	30 // or inline functions from this file, or you compile this file and link it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	31 // with other works to produce a work based on this file, this file does not
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	32 // by itself cause the resulting work to be covered by the GNU General Public
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	33 // License. However the source code for this file must still be made available
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	34 // in accordance with section (3) of the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	35 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	36 // This exception does not invalidate any other reasons why a work based on
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	37 // this file might be covered by the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	38 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	39 //####ECOSGPLCOPYRIGHTEND####
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	40 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	41 //#####DESCRIPTIONBEGIN####
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	42 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	43 // Author(s): gthomas
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	44 // Contributors: gthomas, Andrew Lunn, Bart Veer
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	45 // Date: 2000-07-26
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	46 // Purpose:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	47 // Description:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	48 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	49 //####DESCRIPTIONEND####
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	50 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	51 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	52
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	53 #include <pkgconf/system.h>
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	54 #include <pkgconf/io_flash.h>
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	55 #ifdef CYGPKG_KERNEL
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	56 #include <cyg/kernel/kapi.h>
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	57 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	58 #include <cyg/hal/hal_arch.h>
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	59 #include <cyg/hal/hal_intr.h>
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	60 #include <cyg/hal/hal_cache.h>
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	61 #include <cyg/hal/hal_tables.h>
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	62 #include <cyg/infra/cyg_ass.h>
191 678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST jlarmour parents: 177 diff changeset	63 #include <string.h>
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	64
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	65 #include <cyg/io/flash.h>
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	66 #include <cyg/io/flash_dev.h>
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	67 #include "flash_legacy.h"
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	68
143 6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 141 diff changeset	69 // When this flag is set, do not actually jump to the relocated code.
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	70 // This can be used for running the function in place (RAM startup
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	71 // only), allowing calls to diag_printf() and similar.
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	72 #undef RAM_FLASH_DEV_DEBUG
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	73 #if !defined(CYG_HAL_STARTUP_RAM) && defined(RAM_FLASH_DEV_DEBUG)
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	74 # warning "Can only enable the flash debugging when configured for RAM startup"
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	75 #endif
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	76
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	77 // Optional verbosity. Using a macro here avoids lots of ifdefs in the
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	78 // rest of the code.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	79 #ifdef CYGSEM_IO_FLASH_CHATTER
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	80 # define CHATTER(_dev_, _fmt_, ...) (*(_dev_)->pf)((_fmt_), ## __VA_ARGS__)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	81 #else
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	82 # define CHATTER(_dev_, _fmt_, ...) CYG_EMPTY_STATEMENT
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	83 #endif
1400 707a873489c8 * src/flash.c: gcc 3.x vs gcc 2.x problems. asl parents: 1389 diff changeset	84
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	85 // Per-thread locking. Again using macros avoids lots of ifdefs
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	86 #ifdef CYGPKG_KERNEL
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	87 # define LOCK_INIT(_dev_) cyg_mutex_init(&((_dev_)->mutex))
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	88 # define LOCK(_dev_) cyg_mutex_lock(&((_dev_)->mutex))
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	89 # define UNLOCK(_dev_) cyg_mutex_unlock(&((_dev_)->mutex))
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	90 #else
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	91 # define LOCK_INIT(_dev_) CYG_EMPTY_STATEMENT
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	92 # define LOCK(_dev_) CYG_EMPTY_STATEMENT
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	93 # define UNLOCK(_dev_) CYG_EMPTY_STATEMENT
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	94 #endif
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	95
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	96 // Software write-protect. Very rarely used.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	97 #ifdef CYGSEM_IO_FLASH_SOFT_WRITE_PROTECT
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	98 # define CHECK_SOFT_WRITE_PROTECT(_addr_, _len_) \
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	99 CYG_MACRO_START \
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	100 if (plf_flash_query_soft_wp((_addr_), (_len_))) \
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	101 return CYG_FLASH_ERR_PROTECT; \
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	102 CYG_MACRO_END
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	103 #else
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	104 #define CHECK_SOFT_WRITE_PROTECT(_addr_, _len_) CYG_EMPTY_STATEMENT
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	105 #endif
1400 707a873489c8 * src/flash.c: gcc 3.x vs gcc 2.x problems. asl parents: 1389 diff changeset	106
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	107 // Has the FLASH IO library been initialised?
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	108 static bool init;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	109
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	110 // This array contains entries for all flash devices that are
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	111 // installed in the system.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	112 __externC struct cyg_flash_dev cyg_flashdevtab[];
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	113 CYG_HAL_TABLE_BEGIN(cyg_flashdevtab, cyg_flashdev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	114
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	115 // end of the flashdev table
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	116 __externC struct cyg_flash_dev cyg_flashdevtab_end;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	117 CYG_HAL_TABLE_END(cyg_flashdevtab_end, cyg_flashdev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	118
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	119 #if (1 == CYGHWR_IO_FLASH_DEVICE)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	120
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	121 // Optimize the code for a single flash device, which is the common case.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	122 // The flash subsystem must have been initialized, the single device must
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	123 // contain the specified address, and the device itself must have
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	124 // initialized successfully.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	125 static struct cyg_flash_dev*
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	126 find_dev(cyg_flashaddr_t addr, int* stat)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	127 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	128 if (!init) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	129 *stat = CYG_FLASH_ERR_NOT_INIT;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	130 return NULL;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	131 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	132 if (! ((addr >= cyg_flashdevtab[0].start) && (addr <= cyg_flashdevtab[0].end))) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	133 *stat = CYG_FLASH_ERR_INVALID;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	134 return NULL;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	135 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	136 if (! cyg_flashdevtab[0].init) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	137 *stat = CYG_FLASH_ERR_NOT_INIT;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	138 return NULL;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	139 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	140 return &cyg_flashdevtab[0];
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	141 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	142
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	143 #else
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	144
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	145 // There are multiple devices. For convenience these are kept in a
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	146 // linked list, sorted by address. This is the head of the list
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	147 static struct cyg_flash_dev *flash_head = NULL;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	148
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	149 static bool flash_sort_and_check(void)
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	150 {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	151 bool moved;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	152 struct cyg_flash_dev dev, *previous_next;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	153
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	154 // Place all devices that initialised on the list, unsorted for now.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	155 for (dev = &cyg_flashdevtab[0]; dev != &cyg_flashdevtab_end; dev++) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	156 if (dev->init) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	157 dev->next = flash_head;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	158 flash_head = dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	159 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	160 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	161
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	162 // If there are no valid devices, abort. This might happen if
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	163 // all drivers failed to initialize.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	164 if (flash_head == NULL) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	165 return false;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	166 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	167
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	168 // Sort the linked list into ascending order of flash address. Use a
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	169 // primitive ripple sort, but since we don't expect to have many
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	170 // devices this should be OK. This loop may run safely with just one
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	171 // entry on the list.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	172 do {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	173 moved=false;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	174 for (dev=flash_head, previous_next=&flash_head;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	175 dev->next;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	176 previous_next = &dev->next, dev=dev->next ){
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	177 if (dev->start > dev->next->start) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	178 *previous_next=dev->next;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	179 dev->next = (*previous_next)->next;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	180 (*previous_next)->next = dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	181 moved=true;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	182 break;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	183 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	184 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	185 } while (moved);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	186
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	187 // Now walk the linked list and see if there are any overlaps in the
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	188 // addresses the devices claim to use using.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	189 for (dev=flash_head; dev->next; dev=dev->next){
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	190 if (dev->end >= dev->next->start)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	191 return false;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	192 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	193 return true;
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	194 }
e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	195
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	196 // Find the device at the specified address, if any.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	197 static struct cyg_flash_dev*
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	198 find_dev(cyg_flashaddr_t addr, int* stat)
143 6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 141 diff changeset	199 {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	200 struct cyg_flash_dev* dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	201 if (!init) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	202 *stat = CYG_FLASH_ERR_NOT_INIT;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	203 return NULL;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	204 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	205 for (dev = flash_head; dev; dev = dev->next) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	206 if ((dev->start <= addr) && (addr <= dev->end)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	207 return dev;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	208 }
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	209 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	210 *stat = CYG_FLASH_ERR_INVALID;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	211 return NULL;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	212 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	213
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	214 #endif
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	215
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	216 // Initialise all registered device. Any device that fails to
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	217 // initialise we leave dev->init as false. Then sort the devices into
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	218 // ascending order of address and put them into a linked list. Lastly
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	219 // check if we have any overlap of the addresses.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	220 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	221 cyg_flash_init(cyg_flash_printf *pf)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	222 {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	223 int err;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	224 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	225
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	226 CYG_ASSERT(&(cyg_flashdevtab[CYGHWR_IO_FLASH_DEVICE]) == &cyg_flashdevtab_end, "incorrect number of flash devices");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	227
2633 592d727733df * src/flash.c (cyg_flash_init): Allow repeated calls to jlarmour parents: 2626 diff changeset	228 if (init) {
592d727733df * src/flash.c (cyg_flash_init): Allow repeated calls to jlarmour parents: 2626 diff changeset	229 // In case the printf function has changed.
592d727733df * src/flash.c (cyg_flash_init): Allow repeated calls to jlarmour parents: 2626 diff changeset	230 for (dev = &cyg_flashdevtab[0]; dev != &cyg_flashdevtab_end; dev++) {
592d727733df * src/flash.c (cyg_flash_init): Allow repeated calls to jlarmour parents: 2626 diff changeset	231 dev->pf = pf;
592d727733df * src/flash.c (cyg_flash_init): Allow repeated calls to jlarmour parents: 2626 diff changeset	232 }
592d727733df * src/flash.c (cyg_flash_init): Allow repeated calls to jlarmour parents: 2626 diff changeset	233 return CYG_FLASH_ERR_OK;
592d727733df * src/flash.c (cyg_flash_init): Allow repeated calls to jlarmour parents: 2626 diff changeset	234 }
592d727733df * src/flash.c (cyg_flash_init): Allow repeated calls to jlarmour parents: 2626 diff changeset	235
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	236 for (dev = &cyg_flashdevtab[0]; dev != &cyg_flashdevtab_end; dev++) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	237 dev->pf = pf;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	238 LOCK_INIT(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	239
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	240 err = dev->funs->flash_init(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	241 if (err != CYG_FLASH_ERR_OK) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	242 continue;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	243 }
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	244 CYG_ASSERT(dev->funs, "No flash functions");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	245 CYG_ASSERT(dev->num_block_infos, "No number of block infos");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	246 CYG_ASSERT(dev->block_info, "No block infos");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	247 CYG_ASSERT(!(((cyg_flashaddr_t)dev->block_info >= dev->start) &&
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	248 ((cyg_flashaddr_t)dev->block_info < dev->end)),
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	249 "Block info is in the flash");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	250 CYG_ASSERT(dev->funs->flash_erase_block, "No erase function");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	251 CYG_ASSERT(dev->funs->flash_program, "No program function");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	252 #ifdef CYGDBG_USE_ASSERTS
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	253 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	254 int i;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	255 cyg_flashaddr_t addr = dev->start;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	256 for (i = 0; i < dev->num_block_infos; i++) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	257 addr += dev->block_info[i].block_size * dev->block_info[i].blocks;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	258 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	259 CYG_ASSERT(dev->end == addr-1, "Invalid end address");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	260 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	261 #endif
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	262 dev->init = true;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	263 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	264
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	265 #if (1 == CYGHWR_IO_FLASH_DEVICE)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	266 // Make sure there is one device, otherwise we could end up
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	267 // accessing a non-existent cyg_flash_dev structure.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	268 if (&(cyg_flashdevtab[0]) == &cyg_flashdevtab_end) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	269 return CYG_FLASH_ERR_INVALID;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	270 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	271 #else
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	272 // Place the devices on a sorted linked list and check that there
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	273 // are no overlaps in the address space.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	274 if (! flash_sort_and_check() ) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	275 return CYG_FLASH_ERR_INVALID;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	276 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	277 #endif
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	278
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	279 // Only mark the flash subsystem as initialized if the world is
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	280 // consistent.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	281 init = true;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	282 return CYG_FLASH_ERR_OK;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	283 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	284
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	285 // Is the address within one of the flash drivers?
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	286 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	287 cyg_flash_verify_addr(const cyg_flashaddr_t address)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	288 {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	289 int stat = CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	290 (void) find_dev(address, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	291 return stat;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	292 }
157 b65ec671dd4c Merge from eCos master repository on 2001-04-06-18:28:36-BST jlarmour parents: 156 diff changeset	293
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	294 // Return information about the Nth driver
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	295 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	296 cyg_flash_get_info(cyg_uint32 Nth, cyg_flash_info_t * info)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	297 {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	298 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	299
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	300 if (!init) return CYG_FLASH_ERR_NOT_INIT;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	301
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	302 #if (1 == CYGHWR_IO_FLASH_DEVICE)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	303 if ((0 == Nth) && cyg_flashdevtab[0].init) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	304 dev = &(cyg_flashdevtab[0]);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	305 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	306 return CYG_FLASH_ERR_INVALID;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	307 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	308 #else
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	309 // Only initialized devices are on the list.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	310 for (dev = flash_head; dev && Nth; dev=dev->next, Nth--)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	311 ;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	312 if (!dev) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	313 return CYG_FLASH_ERR_INVALID;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	314 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	315 #endif
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	316 info->start = dev->start;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	317 info->end = dev->end;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	318 info->num_block_infos = dev->num_block_infos;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	319 info->block_info = dev->block_info;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	320 return CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	321 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	322
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	323 // Return information about the flash at the given address
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	324 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	325 cyg_flash_get_info_addr(const cyg_flashaddr_t flash_base, cyg_flash_info_t * info)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	326 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	327 struct cyg_flash_dev *dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	328 int stat = CYG_FLASH_ERR_OK;
174 38892b97b685 Merge from eCos master repository on 2001-07-28-00:17:32-BST jlarmour parents: 163 diff changeset	329
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	330 dev = find_dev(flash_base, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	331 if (dev) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	332 info->start = dev->start;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	333 info->end = dev->end;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	334 info->num_block_infos = dev->num_block_infos;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	335 info->block_info = dev->block_info;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	336 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	337 return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	338 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	339
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	340 #ifdef CYGPKG_KERNEL
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	341 // Lock the mutex's for a range of addresses
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	342 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	343 cyg_flash_mutex_lock(const cyg_flashaddr_t from, size_t len)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	344 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	345 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	346 int stat = CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	347
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	348 dev = find_dev(from, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	349 if (dev) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	350 LOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	351 if (len > (dev->end + 1 - from)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	352 stat = cyg_flash_mutex_lock(dev->end + 1, len - (dev->end + 1 - from));
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	353 if (CYG_FLASH_ERR_OK != stat) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	354 // Something went wrong, unlock what we just locked
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	355 UNLOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	356 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	357 }
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	358 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	359 return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	360 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	361
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	362 // Unlock the mutex's for a range of addresses
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	363 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	364 cyg_flash_mutex_unlock(const cyg_flashaddr_t from, size_t len)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	365 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	366 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	367 int stat = CYG_FLASH_ERR_OK;
195 67850532eebb Merge from eCos master repository on 2001-11-02-06:43:03-GMT jlarmour parents: 191 diff changeset	368
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	369 dev = find_dev(from, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	370 if (dev) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	371 UNLOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	372 if (len > (dev->end + 1 - from)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	373 stat = cyg_flash_mutex_lock(dev->end + 1, len - (dev->end + 1 - from));
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	374 if (CYG_FLASH_ERR_OK != stat) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	375 // Something went wrong, relock what we just unlocked. This may not
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	376 // be worth it since things must be pretty messed up, and could
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	377 // conceivably end in deadlock if there is a concurrent call to
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	378 // cyg_flash_mutex_lock();
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	379 LOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	380 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	381 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	382 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	383 return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	384 }
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	385 #endif
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	386
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	387 // Return the size of the block which is at the given address
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	388 static size_t
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	389 flash_block_size(struct cyg_flash_dev *dev, const cyg_flashaddr_t addr)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	390 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	391 int i;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	392 size_t offset;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	393
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	394 CYG_ASSERT((addr >= dev->start) && (addr <= dev->end), "Not inside device");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	395
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	396 offset = addr - dev->start;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	397 for (i=0; i < dev->num_block_infos; i++) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	398 if (offset < (dev->block_info[i].blocks * dev->block_info[i].block_size))
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	399 return dev->block_info[i].block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	400 offset = offset -
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	401 (dev->block_info[i].blocks * dev->block_info[i].block_size);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	402 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	403 CYG_FAIL("Programming error");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	404 return 0;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	405 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	406
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	407 // Return the size of the block which is at the given address
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	408 __externC size_t
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	409 cyg_flash_block_size(const cyg_flashaddr_t flash_base)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	410 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	411 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	412 int stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	413
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	414 dev = find_dev(flash_base, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	415 if (!dev) return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	416 return flash_block_size(dev, flash_base);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	417 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	418
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	419 // Return the first address of a block. The flash might not be aligned
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	420 // in terms of its block size. So we have to be careful and use
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	421 // offsets.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	422 static inline cyg_flashaddr_t
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	423 flash_block_begin(cyg_flashaddr_t addr, struct cyg_flash_dev *dev)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	424 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	425 size_t block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	426 cyg_flashaddr_t offset;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	427
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	428 block_size = flash_block_size(dev, addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	429
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	430 offset = addr - dev->start;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	431 offset = (offset / block_size) * block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	432 return offset + dev->start;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	433 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	434
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	435
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	436 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	437 cyg_flash_erase(cyg_flashaddr_t flash_base,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	438 size_t len,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	439 cyg_flashaddr_t *err_address)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	440 {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	441 cyg_flashaddr_t block, end_addr;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	442 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	443 size_t erase_count;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	444 int stat = CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	445 HAL_FLASH_CACHES_STATE(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	446
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	447 dev = find_dev(flash_base, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	448 if (!dev) return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	449
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	450 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	451
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	452 LOCK(dev);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	453
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	454 // Check whether or not we are going past the end of this device, on
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	455 // to the next one. If so the next device will be handled by a
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	456 // recursive call later on.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	457 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	458 end_addr = dev->end;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	459 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	460 end_addr = flash_base + len - 1;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	461 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	462 // erase can only happen on a block boundary, so adjust for this
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	463 block = flash_block_begin(flash_base, dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	464 erase_count = (end_addr + 1) - block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	465
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	466 CHATTER(dev, "... Erase from %p-%p: ", (void)block, (void)end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	467
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	468 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	469 FLASH_Enable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	470 while (erase_count > 0) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	471 int i;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	472 unsigned char *dp;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	473 bool erased = false;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	474 size_t block_size = flash_block_size(dev, block);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	475
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	476 // Pad to the block boundary, if necessary
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	477 if (erase_count < block_size) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	478 erase_count = block_size;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	479 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	480
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	481 // If there is a read function it probably means the flash
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	482 // cannot be read directly.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	483 if (!dev->funs->flash_read) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	484 erased = true;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	485 dp = (unsigned char *)block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	486 for (i = 0; i < block_size; i++) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	487 if (*dp++ != (unsigned char)0xFF) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	488 erased = false;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	489 break;
174 38892b97b685 Merge from eCos master repository on 2001-07-28-00:17:32-BST jlarmour parents: 163 diff changeset	490 }
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	491 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	492 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	493 if (!erased) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	494 stat = dev->funs->flash_erase_block(dev,block);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	495 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	496 if (CYG_FLASH_ERR_OK != stat) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	497 if (err_address)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	498 *err_address = block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	499 break;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	500 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	501 block += block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	502 erase_count -= block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	503 CHATTER(dev, ".");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	504 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	505 FLASH_Disable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	506 HAL_FLASH_CACHES_ON(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	507 CHATTER(dev, "\n");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	508 UNLOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	509 if (stat != CYG_FLASH_ERR_OK) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	510 return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	511 }
174 38892b97b685 Merge from eCos master repository on 2001-07-28-00:17:32-BST jlarmour parents: 163 diff changeset	512
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	513 // If there are multiple flash devices in series the erase operation
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	514 // may touch successive devices. This can be handled by recursion.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	515 // The stack overheads should be minimal because the number of
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	516 // devices will be small.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	517 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	518 return cyg_flash_erase(dev->end+1,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	519 len - (dev->end + 1 - flash_base),
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	520 err_address);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	521 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	522 return CYG_FLASH_ERR_OK;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	523 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	524
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	525 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	526 cyg_flash_program(cyg_flashaddr_t flash_base,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	527 const void *ram_base,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	528 size_t len,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	529 cyg_flashaddr_t *err_address)
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	530 {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	531 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	532 cyg_flashaddr_t addr, end_addr, block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	533 const unsigned char * ram = ram_base;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	534 size_t write_count, offset;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	535 int stat = CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	536 HAL_FLASH_CACHES_STATE(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	537
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	538 dev = find_dev(flash_base, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	539 if (!dev) return stat;
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	540
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	541 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	542
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	543 LOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	544 addr = flash_base;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	545 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	546 end_addr = dev->end;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	547 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	548 end_addr = flash_base + len - 1;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	549 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	550 write_count = (end_addr + 1) - flash_base;
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	551
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	552 // The first write may be in the middle of a block. Do the necessary
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	553 // adjustment here rather than inside the loop.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	554 block = flash_block_begin(flash_base, dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	555 if (addr == block) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	556 offset = 0;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	557 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	558 offset = addr - block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	559 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	560
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	561 CHATTER(dev, "... Program from %p-%p to %p: ", ram_base, ((CYG_ADDRESS)ram_base)+write_count, addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	562
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	563 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	564 FLASH_Enable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	565 while (write_count > 0) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	566 size_t block_size = flash_block_size(dev, addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	567 size_t this_write;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	568 if (write_count > (block_size - offset)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	569 this_write = block_size - offset;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	570 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	571 this_write = write_count;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	572 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	573 // Only the first block may need the offset.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	574 offset = 0;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	575
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	576 stat = dev->funs->flash_program(dev, addr, ram, this_write);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	577 #ifdef CYGSEM_IO_FLASH_VERIFY_PROGRAM
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	578 if (CYG_FLASH_ERR_OK == stat) // Claims to be OK
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	579 if (!dev->funs->flash_read && memcmp((void *)addr, ram, this_write) != 0) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	580 stat = CYG_FLASH_ERR_DRV_VERIFY;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	581 CHATTER(dev, "V");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	582 }
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	583 #endif
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	584 if (CYG_FLASH_ERR_OK != stat) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	585 if (err_address)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	586 *err_address = addr;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	587 break;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	588 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	589 CHATTER(dev, ".");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	590 write_count -= this_write;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	591 addr += this_write;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	592 ram += this_write;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	593 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	594 FLASH_Disable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	595 HAL_FLASH_CACHES_ON(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	596 CHATTER(dev, "\n");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	597 UNLOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	598 if (stat != CYG_FLASH_ERR_OK) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	599 return (stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	600 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	601 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	602 return cyg_flash_program(dev->end+1, ram,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	603 len - (dev->end + 1 - flash_base),
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	604 err_address);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	605 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	606 return CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	607 }
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	608
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	609 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	610 cyg_flash_read(const cyg_flashaddr_t flash_base,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	611 void *ram_base,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	612 size_t len,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	613 cyg_flashaddr_t *err_address)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	614 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	615 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	616 cyg_flashaddr_t addr, end_addr;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	617 unsigned char * ram = (unsigned char *)ram_base;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	618 size_t read_count;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	619 int stat = CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	620
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	621 dev = find_dev(flash_base, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	622 if (!dev) return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	623
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	624 LOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	625 addr = flash_base;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	626 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	627 end_addr = dev->end;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	628 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	629 end_addr = flash_base + len - 1;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	630 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	631 read_count = (end_addr + 1) - flash_base;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	632
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	633 // CHATTER(dev, "... Read from %p-%p to %p: ", addr, end_addr, ram_base);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	634
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	635 // If the flash is directly accessible, just read it in one go. This
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	636 // still happens with the mutex locked to protect against concurrent
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	637 // programs/erases.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	638 if (! dev->funs->flash_read) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	639 memcpy(ram, (void*)addr, read_count);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	640 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	641 #ifndef CYGHWR_IO_FLASH_INDIRECT_READS
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	642 CYG_FAIL("read function supplied but indirect reads not enabled");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	643 stat = CYG_FLASH_ERR_PROTOCOL;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	644 if (err_address) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	645 *err_address = addr;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	646 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	647 #else
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	648 // We have to indirect through the device driver.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	649 // The first read may be in the middle of a block. Do the necessary
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	650 // adjustment here rather than inside the loop.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	651 size_t offset;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	652 cyg_flashaddr_t block = flash_block_begin(flash_base, dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	653 HAL_FLASH_CACHES_STATE(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	654 if (addr == block) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	655 offset = 0;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	656 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	657 offset = addr - block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	658 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	659 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	660 FLASH_Enable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	661 while (read_count > 0) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	662 size_t block_size = flash_block_size(dev, addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	663 size_t this_read;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	664 if (read_count > (block_size - offset)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	665 this_read = block_size - offset;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	666 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	667 this_read = read_count;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	668 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	669 // Only the first block may need the offset
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	670 offset = 0;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	671
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	672 stat = dev->funs->flash_read(dev, addr, ram, this_read);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	673 if (CYG_FLASH_ERR_OK != stat && err_address) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	674 *err_address = addr;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	675 break;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	676 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	677 // CHATTER(dev, ".");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	678 read_count -= this_read;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	679 addr += this_read;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	680 ram += this_read;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	681 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	682 FLASH_Disable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	683 HAL_FLASH_CACHES_ON(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	684 #endif
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	685 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	686 // CHATTER(dev, "\n");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	687 UNLOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	688 if (stat != CYG_FLASH_ERR_OK) {
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	689 return (stat);
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	690 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	691 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	692 return cyg_flash_read(dev->end+1, ram,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	693 len - (dev->end + 1 - flash_base),
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	694 err_address);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	695 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	696 return CYG_FLASH_ERR_OK;
1223 dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	697 }
dbcfe4e0dbd2 New platform - TAMS MOAB - and generic changes to support it gthomas parents: 210 diff changeset	698
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 174 diff changeset	699 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	700 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	701 cyg_flash_lock(const cyg_flashaddr_t flash_base,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	702 size_t len,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	703 cyg_flashaddr_t *err_address)
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	704 {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	705 cyg_flashaddr_t block, end_addr;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	706 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	707 size_t lock_count;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	708 int stat = CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	709 HAL_FLASH_CACHES_STATE(d_cache, i_cache);
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	710
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	711 dev = find_dev(flash_base, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	712 if (!dev) return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	713 if (!dev->funs->flash_block_lock) return CYG_FLASH_ERR_INVALID;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	714
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	715 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	716
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	717 LOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	718 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	719 end_addr = dev->end;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	720 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	721 end_addr = flash_base + len - 1;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	722 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	723 block = flash_block_begin(flash_base, dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	724 lock_count = (end_addr + 1) - block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	725
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	726 CHATTER(dev, "... Locking from %p-%p: ", (void)block, (void)end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	727
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	728 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	729 FLASH_Enable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	730 while (lock_count > 0) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	731 size_t block_size = flash_block_size(dev, block);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	732 if (lock_count < block_size) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	733 lock_count = block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	734 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	735 stat = dev->funs->flash_block_lock(dev,block);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	736
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	737 if (CYG_FLASH_ERR_OK != stat && err_address) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	738 *err_address = block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	739 break;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	740 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	741 block += block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	742 lock_count -= block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	743 CHATTER(dev, ".");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	744 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	745 FLASH_Disable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	746 HAL_FLASH_CACHES_ON(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	747 CHATTER(dev, "\n");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	748 UNLOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	749 if (stat != CYG_FLASH_ERR_OK) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	750 return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	751 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	752
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	753 // Recurse if necessary for the next device
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	754 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	755 return cyg_flash_lock(dev->end+1,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	756 len - (dev->end + 1 - flash_base),
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	757 err_address);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	758 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	759
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	760 return CYG_FLASH_ERR_OK;
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	761 }
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	762
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	763 __externC int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	764 cyg_flash_unlock(const cyg_flashaddr_t flash_base,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	765 size_t len,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	766 cyg_flashaddr_t *err_address)
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	767 {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	768 cyg_flashaddr_t block, end_addr;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	769 struct cyg_flash_dev * dev;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	770 size_t unlock_count;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	771 int stat = CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	772 HAL_FLASH_CACHES_STATE(d_cache, i_cache);
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	773
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	774 dev = find_dev(flash_base, &stat);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	775 if (!dev) return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	776 if (!dev->funs->flash_block_unlock) return CYG_FLASH_ERR_INVALID;
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 195 diff changeset	777
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	778 CHECK_SOFT_WRITE_PROTECT(flash_base, len);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	779
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	780 LOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	781 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	782 end_addr = dev->end;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	783 } else {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	784 end_addr = flash_base + len - 1;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	785 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	786 block = flash_block_begin(flash_base, dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	787 unlock_count = (end_addr + 1) - block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	788
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	789 CHATTER(dev, "... Unlocking from %p-%p: ", (void)block, (void)end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	790
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	791 HAL_FLASH_CACHES_OFF(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	792 FLASH_Enable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	793 while (unlock_count > 0) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	794 size_t block_size = flash_block_size(dev, block);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	795 if (unlock_count < block_size) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	796 unlock_count = block_size;
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	797 }
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	798 stat = dev->funs->flash_block_unlock(dev,block);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	799
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	800 if (CYG_FLASH_ERR_OK != stat && err_address) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	801 *err_address = block;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	802 break;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	803 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	804 block += block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	805 unlock_count -= block_size;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	806
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	807 CHATTER(dev, ".");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	808 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	809 FLASH_Disable(flash_base, end_addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	810 HAL_FLASH_CACHES_ON(d_cache, i_cache);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	811 CHATTER(dev, "\n");
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	812 UNLOCK(dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	813 if (stat != CYG_FLASH_ERR_OK) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	814 return stat;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	815 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	816
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	817 // Recurse if necessary for the next device
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	818 if (len > (dev->end + 1 - flash_base)) {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	819 return cyg_flash_lock(dev->end+1,
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	820 len - (dev->end + 1 - flash_base),
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	821 err_address);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	822 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	823 return CYG_FLASH_ERR_OK;
119 77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	824 }
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	825 #endif
77cec8369160 Merge from eCos master repository on 2000-09-01-07:47:03-BST jlarmour parents: 117 diff changeset	826
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	827 const char *
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	828 cyg_flash_errmsg(const int err)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	829 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	830 switch (err) {
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	831 case CYG_FLASH_ERR_OK:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	832 return "No error - operation complete";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	833 case CYG_FLASH_ERR_ERASE_SUSPEND:
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	834 return "Device is in erase suspend state";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	835 case CYG_FLASH_ERR_PROGRAM_SUSPEND:
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 121 diff changeset	836 return "Device is in program suspend state";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	837 case CYG_FLASH_ERR_INVALID:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	838 return "Invalid FLASH address";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	839 case CYG_FLASH_ERR_ERASE:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	840 return "Error trying to erase";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	841 case CYG_FLASH_ERR_LOCK:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	842 return "Error trying to lock/unlock";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	843 case CYG_FLASH_ERR_PROGRAM:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	844 return "Error trying to program";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	845 case CYG_FLASH_ERR_PROTOCOL:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	846 return "Generic error";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	847 case CYG_FLASH_ERR_PROTECT:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	848 return "Device/region is write-protected";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	849 case CYG_FLASH_ERR_NOT_INIT:
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	850 return "FLASH sub-system not initialized";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	851 case CYG_FLASH_ERR_DRV_VERIFY:
143 6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 141 diff changeset	852 return "Data verify failed after operation";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	853 case CYG_FLASH_ERR_DRV_TIMEOUT:
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	854 return "Driver timed out waiting for device";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	855 case CYG_FLASH_ERR_DRV_WRONG_PART:
154 e2d866e32dac Merge from eCos master repository on 2001-02-26-23:18:05-GMT jlarmour parents: 151 diff changeset	856 return "Driver does not support device";
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	857 case CYG_FLASH_ERR_LOW_VOLTAGE:
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: 154 diff changeset	858 return "Device reports low voltage";
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	859 default:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	860 return "Unknown error";
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	861 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	862 }
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	863
2626 a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	864 // Dummy routines to put into the device function tables, to handle
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	865 // unsupported/unnecessary functionality. For example not all devices
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	866 // support block locking.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	867 //
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	868 // A dummy initialization routine, for platforms where everything is
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	869 // done statically and there is no need to check device ids or
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	870 // anything similar.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	871 int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	872 cyg_flash_devfn_init_nop(struct cyg_flash_dev* dev)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	873 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	874 CYG_UNUSED_PARAM(struct cyg_flash_dev*, dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	875 return CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	876 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	877
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	878 // A dummy query routine. The implementation of this is specific to
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	879 // each device driver, so some device drivers may choose to do
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	880 // nothing.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	881 size_t
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	882 cyg_flash_devfn_query_nop(struct cyg_flash_dev* dev, void* data, size_t len)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	883 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	884 CYG_UNUSED_PARAM(struct cyg_flash_dev*, dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	885 CYG_UNUSED_PARAM(void*, data);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	886 CYG_UNUSED_PARAM(size_t, len);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	887 return 0;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	888 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	889
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	890 // Dummy lock/unlock routines
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	891 int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	892 cyg_flash_devfn_lock_nop(struct cyg_flash_dev* dev, const cyg_flashaddr_t addr)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	893 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	894 CYG_UNUSED_PARAM(struct cyg_flash_dev*, dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	895 CYG_UNUSED_PARAM(cyg_flashaddr_t, addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	896 #if defined(CYGHWR_IO_FLASH_BLOCK_LOCKING) && (1 < CYGHWR_IO_FLASH_DEVICE)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	897 // If we've been built with locking, and there's more than one flash
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	898 // device in the system, then this is probably only being called because
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	899 // we can't tell what devices do and don't support locking, and for a _nop
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	900 // function this is the device that doesn't support locking. So we don't
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	901 // complain if we're asked to.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	902 return CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	903 #else
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	904 return CYG_FLASH_ERR_DRV_WRONG_PART;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	905 #endif
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	906 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	907
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	908 int
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	909 cyg_flash_devfn_unlock_nop(struct cyg_flash_dev* dev, const cyg_flashaddr_t addr)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	910 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	911 CYG_UNUSED_PARAM(struct cyg_flash_dev*, dev);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	912 CYG_UNUSED_PARAM(cyg_flashaddr_t, addr);
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	913 #if defined(CYGHWR_IO_FLASH_BLOCK_LOCKING) && (1 < CYGHWR_IO_FLASH_DEVICE)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	914 // If we've been built with locking, and there's more than one flash
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	915 // device in the system, then this is probably only being called because
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	916 // we can't tell what devices do and don't support locking, and for a _nop
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	917 // function this is the device that doesn't support locking. So we don't
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	918 // complain if we're asked to.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	919 return CYG_FLASH_ERR_OK;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	920 #else
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	921 return CYG_FLASH_ERR_DRV_WRONG_PART;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	922 #endif
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	923 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	924
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	925 // On some architectures there are problems calling the .2ram
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	926 // functions from the main ones. Specifically the compiler may issue a
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	927 // short call, even though the flash and ram are too far apart. The
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	928 // solution is to indirect via a function pointer, but the simplistic
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	929 // approach is vulnerable to compiler optimization. Hence the function
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	930 // pointer is passed through an anonymizer.
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	931 void*
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	932 cyg_flash_anonymizer(void* fn)
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	933 {
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	934 return fn;
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	935 }
a2f5434df2cb Merge flashv2 branch to trunk, with eCosCentric additions jlarmour parents: 2142 diff changeset	936
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	937 // EOF io/flash/..../flash.c

Mercurial > ecos

annotate packages/io/flash/current/src/flash.c @ 2633:592d727733df