ecos-v2_0-branch: packages/hal/powerpc/arch/current/src/hal

annotate packages/hal/powerpc/arch/current/src/hal_misc.c @ 66:bf00f99aec69 ecos-sw-2000-02-02

Merge from eCos master repository on 2000-02-02-19:16:44-GMT

author	jlarmour
date	Wed, 02 Feb 2000 19:57:02 +0000
parents	c38311975d4f
children	f74b2666b30d

rev	line source
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	1 //==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	2 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	3 // hal_misc.c
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	4 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	5 // HAL miscellaneous functions
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	6 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	7 //==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	8 //####COPYRIGHTBEGIN####
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	9 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	10 // -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	11 // The contents of this file are subject to the Red Hat eCos Public License
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	12 // Version 1.1 (the "License"); you may not use this file except in
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	13 // compliance with the License. You may obtain a copy of the License at
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	14 // http://www.redhat.com/
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	15 //
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	16 // Software distributed under the License is distributed on an "AS IS"
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	18 // License for the specific language governing rights and limitations under
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	19 // the License.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	20 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	21 // The Original Code is eCos - Embedded Configurable Operating System,
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	22 // released September 30, 1998.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	23 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	24 // The Initial Developer of the Original Code is Red Hat.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	25 // Portions created by Red Hat are
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	27 // All Rights Reserved.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	28 // -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	29 //
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	30 //####COPYRIGHTEND####
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	31 //==========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	32 //#####DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	33 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	34 // Author(s): nickg, jskov
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	35 // Contributors: nickg, jskov,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	36 // jlarmour
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	37 // Date: 1999-02-20
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	38 // Purpose: HAL miscellaneous functions
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	39 // Description: This file contains miscellaneous functions provided by the
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	40 // HAL.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	41 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	42 //####DESCRIPTIONEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	43 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	44 //===========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	45
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46 #include <pkgconf/hal.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	47
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	48 #define CYGARC_HAL_COMMON_EXPORT_CPU_MACROS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	49 #include <cyg/hal/ppc_regs.h> // SPR definitions
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	50
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	51 #include <cyg/infra/cyg_type.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52 #include <cyg/infra/cyg_trac.h> // tracing macros
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53 #include <cyg/infra/cyg_ass.h> // assertion macros
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	54 #include <cyg/infra/diag.h> // diag_printf
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	55
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	56 #include <cyg/hal/hal_arch.h> // HAL header
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	57 #include <cyg/hal/hal_cache.h> // HAL cache
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	58 #if defined(CYGFUN_HAL_COMMON_KERNEL_SUPPORT) && \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	59 defined(CYGPKG_HAL_EXCEPTIONS)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	60 # include <cyg/hal/hal_intr.h> // HAL interrupts/exceptions
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	61 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	62
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	63 //---------------------------------------------------------------------------
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	64 // Functions used during initialization.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	65
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	66 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	67 cyg_bool cyg_hal_stop_constructors;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	68 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	69
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	70 typedef void (*pfunc) (void);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	71 extern pfunc __CTOR_LIST__[];
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	72 extern pfunc __CTOR_END__[];
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	73
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	74 void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	75 cyg_hal_invoke_constructors (void)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	76 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	77 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	78 static pfunc *p = &__CTOR_END__[-1];
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	79
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	80 cyg_hal_stop_constructors = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	81 for (; p >= __CTOR_LIST__; p--) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	82 (*p) ();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	83 if (cyg_hal_stop_constructors) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	84 p--;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	85 break;
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	86 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	87 }
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	88 #else
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	89 pfunc *p;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	90
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	91 for (p = &__CTOR_END__[-1]; p >= __CTOR_LIST__; p--)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	92 (*p) ();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	93 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	94 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	95
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	96 // Override any __eabi the compiler might generate. We don't want
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	97 // constructors to be called twice.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	98 void __eabi (void) {}
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	99
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	100 //---------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	101 // First level C exception handler.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	102
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	103 externC void __handle_exception (void);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	104
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105 externC HAL_SavedRegisters *_hal_registers;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	106
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	107 externC void *__mem_fault_handler;
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	108
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	109 void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	110 cyg_hal_exception_handler(HAL_SavedRegisters *regs)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	111 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113
38 e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	114 // If we caught an exception inside the stubs, see if we were expecting it
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	115 // and if so jump to the saved address
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	116 if (__mem_fault_handler) {
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	117 regs->pc = (CYG_ADDRWORD)__mem_fault_handler;
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	118 return; // Caught an exception inside stubs
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	119 }
e7ba79f6d3a8 Merge from eCos master repository on 1999-09-23-20:10:25-BST jlarmour parents: 36 diff changeset	120
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	121 // Set the pointer to the registers of the current exception
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	122 // context. At entry the GDB stub will expand the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	123 // HAL_SavedRegisters structure into a (bigger) register array.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	124 _hal_registers = regs;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	125
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	126 __handle_exception();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	127
32 5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	128 #ifdef CYGPKG_HAL_QUICC
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	129 {
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	130 // This is unpleasant: it appears that if we interrupt the board
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	131 // using ^C coming in on the QUICC's SMC1, by planting a breakpoint
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	132 // at the interrupt return address, the decrementer interrupt is
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	133 // not taken when the bp exception returns AND WORSE no other
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	134 // interrupt is possible until the decrementer fires again. This
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	135 // does not apply to simple "incoming character" interrupts; it
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	136 // seems it has to be combined with an immediate trap on RTI for
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	137 // this to occur.
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	138 //
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	139 // The solution is to test for decrementer underflow after the
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	140 // (any) exception, and maybe reinitialize the decrementer. If the
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	141 // decrementer interrupt gets taken, that causes decrementer reinit
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	142 // too, and no harm is done.
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	143
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	144 cyg_uint32 result;
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	145 asm volatile(
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	146 "mfdec %0;"
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	147 : "=r"(result)
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	148 );
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	149
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	150 if ( CYGNUM_HAL_RTC_PERIOD < result ) {
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	151 // then we missed a tick, but the exception masked it
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	152 // reset the decrementer here
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	153 asm volatile(
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	154 "mtdec %0;"
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	155 : : "r"(CYGNUM_HAL_RTC_PERIOD)
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	156 );
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	157 }
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	158 }
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	159 #endif
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	160
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	161 #elif defined(CYGFUN_HAL_COMMON_KERNEL_SUPPORT) && \
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	162 defined(CYGPKG_HAL_EXCEPTIONS)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	163 int vector = regs->vector>>8;
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	165 // We should decode the vector and pass a more appropriate
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	166 // value as the second argument. For now we simply pass a
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	167 // pointer to the saved registers. We should also divert
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	168 // breakpoint and other debug vectors into the debug stubs.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	169
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	170 if (vector==CYGNUM_HAL_VECTOR_PROGRAM) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	171 int srr1;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	172 CYGARC_MFSPR(CYGARC_REG_SRR1, srr1); // get srr1
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	173
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	174 switch ((srr1 >> 17) & 0xf) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	175 case 1:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	176 vector = CYGNUM_HAL_EXCEPTION_TRAP;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	177 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	178 case 2:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	179 vector = CYGNUM_HAL_EXCEPTION_PRIVILEGED_INSTRUCTION;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	180 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	181 case 4:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	182 vector = CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	183 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	184 case 8:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	185 vector = CYGNUM_HAL_EXCEPTION_FPU;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	186 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	187 default:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	188 CYG_FAIL("Unknown PROGRAM exception!!");
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	189 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	190 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	191 cyg_hal_deliver_exception( vector, (CYG_ADDRWORD)regs );
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	192
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	193 #else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	194
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	195 CYG_FAIL("Exception!!!");
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	196
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	197 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	198
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	199 return;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	200 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	201
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	202 //---------------------------------------------------------------------------
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	203 // Default ISRs
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	204
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	205 externC cyg_uint32
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	206 hal_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	207 {
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	208 diag_printf("Interrupt: %d\n", vector);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	209
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	210 CYG_FAIL("Spurious Interrupt!!!");
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	211 return 0;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	212 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	213
14 01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	214 // The decrementer default ISR has to do nothing. The reason is that
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	215 // decrementer interrupts cannot be disabled - if a kernel configuration
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	216 // does not use the RTC, but does use external interrupts, the decrementer
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	217 // underflow could cause a CYG_FAIL (as above) even though the user did
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	218 // not expect any decrementer interrupts to happen.
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	219 externC cyg_uint32
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	220 hal_default_decrementer_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data)
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	221 {
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	222 return 0;
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	223 }
01ce82f3e11a Merge from eCos master repository on 1999-06-11-17:05:41-BST jlarmour parents: 2 diff changeset	224
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	225 //---------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	226 // Idle thread action
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	227
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	228 void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	229 hal_idle_thread_action( cyg_uint32 count )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	230 {
32 5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	231 #if 0
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	232 #ifdef CYG_HAL_POWERPC_MPC860
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	233 register cyg_uint32 result;
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	234
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	235 cyg_uint32 psivec = (cyg_uint32)CYGARC_REG_IMM_SIVEC ;
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	236 cyg_uint32 psimask = (cyg_uint32)CYGARC_REG_IMM_SIMASK;
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	237 cyg_uint32 psipend = (cyg_uint32)CYGARC_REG_IMM_SIPEND;
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	238 cyg_uint16 ptbscr = (cyg_uint16)CYGARC_REG_IMM_TBSCR;
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	239
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	240 asm volatile(
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	241 "mfdec %0;"
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	242 : "=r"(result)
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	243 );
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	244 diag_printf( "Dec %08x, TBSCR %04x, vec %d: sivec %08x, simask %08x, sipend %08x\n",
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	245 result, (cyg_uint32)(ptbscr), (psivec)>>26, psivec, psimask, *psipend );
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	246 #endif
5af43b635655 Merge from eCos master repository on 1999-08-18-15:20:01-BST jlarmour parents: 18 diff changeset	247 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	248 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	249
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	250 //---------------------------------------------------------------------------
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	251 // Use MMU resources to map memory regions.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	252 // Takes and returns an int used to ID the MMU resource to use. This ID
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	253 // is increased as resources are used and should be used for subsequent
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	254 // invocations.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	255 static int
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	256 hal_map_memory (int id,CYG_ADDRESS virt, CYG_ADDRESS phys,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	257 cyg_int32 size, cyg_uint8 flags)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	258 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	259 #ifdef CYG_HAL_POWERPC_MPC603
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	260 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	261 // Use BATs to map the memory.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	262 cyg_uint32 ubat, lbat;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	263
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	264 ubat = (virt & UBAT_BEPIMASK) \| UBAT_VS \| UBAT_VP;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	265 lbat = (phys & LBAT_BRPNMASK);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	266 if (flags & CYGARC_MEMDESC_CI)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	267 lbat \|= LBAT_I;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	268 if (flags & CYGARC_MEMDESC_GUARDED)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	269 lbat \|= LBAT_G;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	270
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	271 // There are 4 BATs, size is programmable.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	272 while (id < 4 && size > 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	273 cyg_uint32 blk_size = 128*1024;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	274 cyg_uint32 bl = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	275 while (blk_size < 25610241024 && blk_size < size) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	276 blk_size *= 2;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	277 bl = (bl << 1) \| 1;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	278 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	279 ubat = (ubat & ~UBAT_BLMASK) \| (bl << 2);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	280
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	281 switch (id) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	282 case 0:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	283 CYGARC_MTSPR (IBAT0U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	284 CYGARC_MTSPR (IBAT0L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	285 CYGARC_MTSPR (DBAT0U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	286 CYGARC_MTSPR (DBAT0L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	287 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	288 case 1:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	289 CYGARC_MTSPR (IBAT1U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	290 CYGARC_MTSPR (IBAT1L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	291 CYGARC_MTSPR (DBAT1U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	292 CYGARC_MTSPR (DBAT1L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	293 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	294 case 2:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	295 CYGARC_MTSPR (IBAT2U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	296 CYGARC_MTSPR (IBAT2L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	297 CYGARC_MTSPR (DBAT2U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	298 CYGARC_MTSPR (DBAT2L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	299 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	300 case 3:
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	301 CYGARC_MTSPR (IBAT3U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	302 CYGARC_MTSPR (IBAT3L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	303 CYGARC_MTSPR (DBAT3U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	304 CYGARC_MTSPR (DBAT3L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	305 break;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	306 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	307
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	308 size -= blk_size;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	309 id++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	310 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	311 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	312 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	313
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	314
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	315 #ifdef CYG_HAL_POWERPC_MPC8xx
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	316 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	317 // The MPC8xx CPUs do not have BATs. Fortunately we don't
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	318 // currently use the MMU, so we can simulate BATs by using the
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	319 // TLBs.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	320
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	321 cyg_uint32 epn, rpn, ctr, twc;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	322 int max_tlbs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	323
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	324 #if defined(CYG_HAL_POWERPC_MPC860)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	325 // There are 32 TLBs.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	326 max_tlbs = 32;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	327 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	328 #if defined(CYG_HAL_POWERPC_MPC823) \|\| defined(CYG_HAL_POWERPC_MPC850)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	329 // There are 8 TLBs.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	330 max_tlbs = 8;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	331 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	332
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	333 epn = (virt & MI_EPN_EPNMASK) \| MI_EPN_EV;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	334 rpn = ((phys & MI_RPN_RPNMASK)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	335 \| MI_RPN_PPRWRW \| MI_RPN_LPS \| MI_RPN_SH \| MI_RPN_V);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	336 if (flags & CYGARC_MEMDESC_CI)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	337 rpn \|= MI_RPN_CI;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	338
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	339 twc = MI_TWC_PS8MB \| MI_TWC_V;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	340 if (flags & CYGARC_MEMDESC_GUARDED)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	341 twc \|= MI_TWC_G;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	342
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	343 // Ignore attempts to use more than max_tlbs.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	344 while (id < max_tlbs && size > 0) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	345 ctr = id << MI_CTR_INDX_SHIFT;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	346
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	347 // Instruction TLB.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	348 CYGARC_MTSPR (MI_TWC, twc);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	349 CYGARC_MTSPR (MI_CTR, ctr);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	350 CYGARC_MTSPR (MI_EPN, epn);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	351 CYGARC_MTSPR (MI_RPN, rpn);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	352
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	353 // Data TLB.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	354 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	355 cyg_uint32 drpn;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	356
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	357 // Need to mark data page as changed or an exception
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	358 // will be generated on first write to the page.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	359 drpn = rpn \| MD_RPN_CHANGED;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	360
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	361 CYGARC_MTSPR (MD_TWC, twc);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	362 CYGARC_MTSPR (MD_CTR, ctr);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	363 CYGARC_MTSPR (MD_EPN, epn);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	364 CYGARC_MTSPR (MD_RPN, drpn);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	365 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	366
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	367 // Move to next 8MB block.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	368 size -= 810241024;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	369 epn += 810241024;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	370 rpn += 810241024;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	371 id++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	372 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	373 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	374 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	375
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	376 return id;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	377 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	378
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	379
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	380 // Initialize MMU to a sane (NOP) state.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	381 static void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	382 hal_clear_MMU (void)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	383 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	384 #ifdef CYG_HAL_POWERPC_MPC603
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	385 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	386 cyg_uint32 ubat, lbat;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	387
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	388 // Initialize BATs with 0 -- VS&VP are unset, making all matches fail
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	389 ubat = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	390 lbat = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	391
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	392 CYGARC_MTSPR (IBAT0U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	393 CYGARC_MTSPR (IBAT0L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	394 CYGARC_MTSPR (DBAT0U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	395 CYGARC_MTSPR (DBAT0L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	396 CYGARC_MTSPR (IBAT1U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	397 CYGARC_MTSPR (IBAT1L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	398 CYGARC_MTSPR (DBAT1U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	399 CYGARC_MTSPR (DBAT1L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	400 CYGARC_MTSPR (IBAT2U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	401 CYGARC_MTSPR (IBAT2L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	402 CYGARC_MTSPR (DBAT2U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	403 CYGARC_MTSPR (DBAT2L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	404 CYGARC_MTSPR (IBAT3U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	405 CYGARC_MTSPR (IBAT3L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	406 CYGARC_MTSPR (DBAT3U, ubat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	407 CYGARC_MTSPR (DBAT3L, lbat);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	408 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	409 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	410
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	411 #ifdef CYG_HAL_POWERPC_MPC8xx
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	412 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	413 // Initialize TLBs with 0, Valid bits unset.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	414
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	415 cyg_uint32 ctr;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	416 int id;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	417 int max_tlbs;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	418
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	419 #if defined(CYG_HAL_POWERPC_MPC860)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	420 // There are 32 TLBs.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	421 max_tlbs = 32;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	422 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	423 #if defined(CYG_HAL_POWERPC_MPC823) \|\| defined(CYG_HAL_POWERPC_MPC850)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	424 // There are 8 TLBs.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	425 max_tlbs = 8;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	426 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	427
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	428 CYGARC_MTSPR (M_CASID, 0);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	429
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	430 for (id = 0; id < max_tlbs; id++) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	431 ctr = id << MI_CTR_INDX_SHIFT;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	432
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	433 // Instruction TLBs.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	434 CYGARC_MTSPR (MI_TWC, 0);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	435 CYGARC_MTSPR (MI_CTR, ctr);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	436 CYGARC_MTSPR (MI_EPN, 0);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	437 CYGARC_MTSPR (MI_RPN, 0);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	438 // Data TLBs.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	439 CYGARC_MTSPR (MD_TWC, 0);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	440 CYGARC_MTSPR (MD_CTR, ctr);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	441 CYGARC_MTSPR (MD_EPN, 0);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	442 CYGARC_MTSPR (MD_RPN, 0);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	443 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	444 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	445 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	446 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	447
16 4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	448 // NB this demands that the platform HAL has provided an
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	449 // externC cyg_memdesc_t cyg_hal_mem_map[];
4f2df4ab82c8 Merge from eCos master repository on 1999-06-18-15:25:04-BST jlarmour parents: 14 diff changeset	450 // as detailed in hal_cache.h:
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	451 externC void hal_MMU_init (void)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	452 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	453 int id = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	454 int i = 0;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	455
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	456 hal_clear_MMU ();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	457
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	458 while (cyg_hal_mem_map[i].size) {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	459 id = hal_map_memory (id,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	460 cyg_hal_mem_map[i].virtual_addr,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	461 cyg_hal_mem_map[i].physical_addr,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	462 cyg_hal_mem_map[i].size,
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	463 cyg_hal_mem_map[i].flags);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	464 i++;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	465 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	466 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	467
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	468 //---------------------------------------------------------------------------
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	469 // Initial cache enabling
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 62 diff changeset	470 // Specific behavior for each platform configured via plf_cache.h
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	471
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	472 externC void
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	473 hal_enable_caches(void)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	474 {
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	475 #ifdef CYGPRI_INIT_CACHES
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	476 // Initialize caches.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	477 HAL_ICACHE_UNLOCK_ALL();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	478 HAL_DCACHE_UNLOCK_ALL();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	479 HAL_ICACHE_INVALIDATE_ALL();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	480 HAL_DCACHE_INVALIDATE_ALL();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	481
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	482 // Enable caches.
18 7253dcc42a09 Merge from eCos master repository on 1999-06-25-15:31:50-BST jlarmour parents: 16 diff changeset	483 #ifdef CYGPRI_ENABLE_CACHES
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	484 // Cogent board doesn't support burst access to the ROM and on the
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	485 // MPC8xx caches require burst.
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	486 HAL_ICACHE_ENABLE();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	487 HAL_DCACHE_ENABLE();
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	488 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	489 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	490
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	491 #ifdef CYG_HAL_POWERPC_MPC8xx
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	492 // Disable serialization
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	493 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	494 cyg_uint32 ictrl;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	495 CYGARC_MFSPR (ICTRL, ictrl);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	496 ictrl \|= ICTRL_NOSERSHOW;
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	497 CYGARC_MTSPR (ICTRL, ictrl);
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	498 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	499 #endif
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	500 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	501
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	502 //---------------------------------------------------------------------------
36 e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	503 //A jump via a null pointer causes the CPU to end up here.
e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	504 externC void
e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	505 hal_null_call()
e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	506 {
e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	507
e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	508 CYG_FAIL("Call via NULL-pointer!");
e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	509 for(;;);
e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	510 }
e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	511
e97d78785e2d Merge from eCos master repository on 1999-09-12-15:40:34-BST jlarmour parents: 34 diff changeset	512 //---------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	513 // End of hal_misc.c

Mercurial > ecos-v2_0-branch

annotate packages/hal/powerpc/arch/current/src/hal_misc.c @ 66:bf00f99aec69 ecos-sw-2000-02-02