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/*
* Copyright (C) 1998 Dan Malek <dmalek@jlc.net>
* Copyright (C) 1999 Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
* Copyright (C) 2000-2003 Wolfgang Denk <wd@denx.de>
* Coldfire contribution by Bernhard Kuhn <bkuhn@metrowerks.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <config.h>
#include "version.h"
#ifndef CONFIG_IDENT_STRING
#define CONFIG_IDENT_STRING ""
#endif
#define MCF_MBAR 0x10000000
#define MEM_BUILTIN_ADDR 0x20000000
#define MEM_BUILTIN_SIZE 0x1000
#define DRAM_ADDR 0x0
#define DRAM_SIZE 0x400000
.text
.globl _start
_start:
nop
nop
move.w #0x2700,%sr
move.l #0, %d0
movec %d0, %VBR
#ifdef CONFIG_M5272
move.l #(MCF_MBAR+1), %d0
move.c %d0, %MBAR
move.l #(MEM_BUILTIN_ADDR+1), %d0
movec %d0, %RAMBAR0
move.l #0x01000000, %d0 /* Invalidate cache cmd */
movec %d0, %CACR /* Invalidate cache */
move.l #0x0000c000, %d0 /* Setup cache mask */
movec %d0, %ACR0 /* Enable cache */
move.l #0xff00c000, %d0 /* Setup cache mask */
movec %d0, %ACR1 /* Enable cache */
move.l #0x80000100, %d0 /* Setup cache mask */
movec %d0, %CACR /* Enable cache */
#endif
move.l #_sbss,%a0
move.l #_ebss,%d0
1:
clr.l (%a0)+
cmp.l %a0,%d0
bne.s 1b
/* move.l #MEM_BUILTIN_ADDR+MEM_BUILTIN_SIZE, %sp */
move.l #DRAM_ADDR+DRAM_SIZE, %sp
clr.l %sp@-
jsr board_init_f
.globl exception_handler
exception_handler:
move.w #0x2700,%sr
lea %sp@(-60),%sp
movem.l %d0-%d7/%a0-%a6,%sp@
jsr do_exception
movem.l %sp@,%d0-%d7/%a0-%a6
lea %sp@(60),%sp
rte
.globl buserror_handler
buserror_handler:
move.w #0x2700,%sr
lea %sp@(-60),%sp
movem.l %d0-%d7/%a0-%a6,%sp@
jsr do_buserror
movem.l %sp@,%d0-%d7/%a0-%a6
lea %sp@(60),%sp
rte
.globl addresserror_handler
addresserror_handler:
move.w #0x2700,%sr
lea %sp@(-60),%sp
movem.l %d0-%d7/%a0-%a6,%sp@
jsr do_buserror
movem.l %sp@,%d0-%d7/%a0-%a6
lea %sp@(60),%sp
rte
.globl get_endaddr
get_endaddr:
movel #_end,%d0
rts
#ifdef CONFIG_M5272
.globl icache_enable
icache_enable:
move.l #0x01000000, %d0 /* Invalidate cache cmd */
movec %d0, %CACR /* Invalidate cache */
move.l #0x0000c000, %d0 /* Setup cache mask */
movec %d0, %ACR0 /* Enable cache */
move.l #0xff00c000, %d0 /* Setup cache mask */
movec %d0, %ACR1 /* Enable cache */
move.l #0x80000100, %d0 /* Setup cache mask */
movec %d0, %CACR /* Enable cache */
moveq #1, %d0
move.l %d0, icache_state
rts
.globl icache_disable
icache_disable:
move.l #0x00000100, %d0 /* Setup cache mask */
movec %d0, %CACR /* Enable cache */
clr.l %d0 /* Setup cache mask */
movec %d0, %ACR0 /* Enable cache */
movec %d0, %ACR1 /* Enable cache */
moveq #0, %d0
move.l %d0, icache_state
rts
#endif
#ifdef CONFIG_M5282
.globl icache_enable
icache_enable:
rts
.globl icache_disable
icache_disable:
rts
#endif
.globl icache_status
icache_status:
move.l icache_state, %d0
rts
.data
icache_state:
.long 1
.globl version_string
version_string:
.ascii U_BOOT_VERSION
.ascii " (", __DATE__, " - ", __TIME__, ")"
.ascii CONFIG_IDENT_STRING, "\0"
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