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comparison packages/hal/powerpc/vads/current/src/hal_aux.c @ 461:aae52574f8c5

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Add support for PowerPC/8260 based platforms. Contributed by Patrick Doyle <wpd@delcomsys.com>
author gthomas
date Thu, 12 Dec 2002 21:15:24 +0000
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460:a65a4055f146 461:aae52574f8c5
1 //=============================================================================
2 //
3 // hal_aux.c
4 //
5 // HAL auxiliary objects and code; per platform
6 //
7 //=============================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
12 // Copyright (C) 2002 Gary Thomas
13 //
14 // eCos is free software; you can redistribute it and/or modify it under
15 // the terms of the GNU General Public License as published by the Free
16 // Software Foundation; either version 2 or (at your option) any later version.
17 //
18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 // for more details.
22 //
23 // You should have received a copy of the GNU General Public License along
24 // with eCos; if not, write to the Free Software Foundation, Inc.,
25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 //
27 // As a special exception, if other files instantiate templates or use macros
28 // or inline functions from this file, or you compile this file and link it
29 // with other works to produce a work based on this file, this file does not
30 // by itself cause the resulting work to be covered by the GNU General Public
31 // License. However the source code for this file must still be made available
32 // in accordance with section (3) of the GNU General Public License.
33 //
34 // This exception does not invalidate any other reasons why a work based on
35 // this file might be covered by the GNU General Public License.
36 //
37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
38 // at http://sources.redhat.com/ecos/ecos-license/
39 // -------------------------------------------
40 //####ECOSGPLCOPYRIGHTEND####
41 //=============================================================================
42 //#####DESCRIPTIONBEGIN####
43 //
44 // Author(s): hmt
45 // Contributors:hmt
46 // Date: 1999-06-08
47 // Purpose: HAL aux objects: startup tables.
48 // Description: Tables for per-platform initialization
49 //
50 //####DESCRIPTIONEND####
51 //
52 //=============================================================================
53
54 #include <pkgconf/hal.h>
55 #include <cyg/hal/hal_mem.h> // HAL memory definitions
56 #include <cyg/infra/cyg_type.h>
57
58 // The memory map is weakly defined, allowing the application to redefine
59 // it if necessary. The regions defined below are the minimum requirements.
60 CYGARC_MEMDESC_TABLE CYGBLD_ATTRIB_WEAK = {
61 // Mapping for the Motorola MPC8260 development board
62 CYGARC_MEMDESC_CACHE( 0x00000000, 0x01000000 ), // Main memory 60x SDRAM
63 CYGARC_MEMDESC_NOCACHEGUARD( 0x04000000, 0x00400000 ), // Local Bus SDRAM
64 // The BCSR are actually only 8 registers, but they repeatedly map
65 // into the 1 MB space described here.
66 // The BAT register uses a Block Length of 4MB so that both the BCSRs
67 // and the IMMR space is Managed thru the MMU. In fact, the ATM UNI
68 // Proc. Control is also mapped into this block.
69 // See MPC8260 PowerQUICC II ADS User's Manual, p. 3-35, note 2
70 CYGARC_MEMDESC_NOCACHE( 0x04500000, 0x00400000 ), // BCSR registers
71 CYGARC_MEMDESC_NOCACHE( 0xff800000, 0x00800000 ), // ROM region
72
73 CYGARC_MEMDESC_TABLE_END
74 };
75
76 static volatile CYG_WORD *BCSR0 = (CYG_WORD *)0x04500000;
77 static volatile CYG_WORD *BCSR1 = (CYG_WORD *)0x04500004;
78 static volatile CYG_WORD *BCSR2 = (CYG_WORD *)0x04500008;
79
80 // Some macros used for debugging
81 #define GREEN_LED_ON (*BCSR0 &= 0xFDFFFFFF)
82 #define RED_LED_OFF (*BCSR0 |= 0x01000000)
83 #define GREEN_LED_OFF (*BCSR0 |= 0x02000000)
84 #define RED_LED_ON (*BCSR0 &= 0xFEFFFFFF)
85
86 //--------------------------------------------------------------------------
87 // Platform init code.
88 void
89 hal_platform_init(void)
90 {
91 /*----------------------------------------------------------------------*/
92 /* Enable RS232 interface on the VADS board via BCSR1. BCSR1 is a Board */
93 /* Control and Status Register that resides in a programmable logic */
94 /* device. */
95 /*----------------------------------------------------------------------*/
96
97 //*BCSR1 &= 0xFFFFFFFD; /* Assert the RS232EN_1/ bit */
98 /* The Pilot revision of the MPC8260ADS board has moved the 8 bits
99 * in the 32 bit BCSR0 and BCSR1 from D24-D31 to D0-D7.
100 */
101 *BCSR1 &= 0xFDFFFFFF; /* Assert the RS232EN_1/ bit */
102
103 hal_if_init();
104 }
105
106 // EOF hal_aux.c