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-rw-r--r--cpu/mcf523x/start.S275
1 files changed, 0 insertions, 275 deletions
diff --git a/cpu/mcf523x/start.S b/cpu/mcf523x/start.S
deleted file mode 100644
index 20b50e7..0000000
--- a/cpu/mcf523x/start.S
+++ /dev/null
@@ -1,275 +0,0 @@
-/*
- * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
- * Based on code from 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 <timestamp.h>
-#include "version.h"
-#include <asm/cache.h>
-
-#ifndef CONFIG_IDENT_STRING
-#define CONFIG_IDENT_STRING ""
-#endif
-
-#define _START _start
-#define _FAULT _fault
-
-#define SAVE_ALL \
- move.w #0x2700,%sr; /* disable intrs */ \
- subl #60,%sp; /* space for 15 regs */ \
- moveml %d0-%d7/%a0-%a6,%sp@;
-
-#define RESTORE_ALL \
- moveml %sp@,%d0-%d7/%a0-%a6; \
- addl #60,%sp; /* space for 15 regs */ \
- rte;
-
-.text
-/*
- * Vector table. This is used for initial platform startup.
- * These vectors are to catch any un-intended traps.
- */
-_vectors:
-
-INITSP: .long 0x00000000 /* Initial SP */
-INITPC: .long _START /* Initial PC */
-vector02: .long _FAULT /* Access Error */
-vector03: .long _FAULT /* Address Error */
-vector04: .long _FAULT /* Illegal Instruction */
-vector05: .long _FAULT /* Reserved */
-vector06: .long _FAULT /* Reserved */
-vector07: .long _FAULT /* Reserved */
-vector08: .long _FAULT /* Privilege Violation */
-vector09: .long _FAULT /* Trace */
-vector0A: .long _FAULT /* Unimplemented A-Line */
-vector0B: .long _FAULT /* Unimplemented F-Line */
-vector0C: .long _FAULT /* Debug Interrupt */
-vector0D: .long _FAULT /* Reserved */
-vector0E: .long _FAULT /* Format Error */
-vector0F: .long _FAULT /* Unitialized Int. */
-
-/* Reserved */
-vector10_17:
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-
-vector18: .long _FAULT /* Spurious Interrupt */
-vector19: .long _FAULT /* Autovector Level 1 */
-vector1A: .long _FAULT /* Autovector Level 2 */
-vector1B: .long _FAULT /* Autovector Level 3 */
-vector1C: .long _FAULT /* Autovector Level 4 */
-vector1D: .long _FAULT /* Autovector Level 5 */
-vector1E: .long _FAULT /* Autovector Level 6 */
-vector1F: .long _FAULT /* Autovector Level 7 */
-
-/* TRAP #0 - #15 */
-vector20_2F:
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-
-/* Reserved */
-vector30_3F:
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-
-vector64_127:
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-
-vector128_191:
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-
-vector192_255:
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
-
- .text
-
- .globl _start
-_start:
- nop
- nop
- move.w #0x2700,%sr /* Mask off Interrupt */
-
- /* Set vector base register at the beginning of the Flash */
- move.l #CONFIG_SYS_FLASH_BASE, %d0
- movec %d0, %VBR
-
- move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
- movec %d0, %RAMBAR1
-
- /* invalidate and disable cache */
- move.l #CF_CACR_CINV, %d0 /* Invalidate cache cmd */
- movec %d0, %CACR /* Invalidate cache */
- nop
- move.l #0, %d0
- movec %d0, %ACR0
- movec %d0, %ACR1
-
- /* initialize general use internal ram */
- move.l #0, %d0
- move.l #(ICACHE_STATUS), %a1 /* icache */
- move.l #(DCACHE_STATUS), %a2 /* icache */
- move.l %d0, (%a1)
- move.l %d0, (%a2)
-
- /* set stackpointer to end of internal ram to get some stackspace for the
- first c-code */
- move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
- clr.l %sp@-
-
- move.l #__got_start, %a5 /* put relocation table address to a5 */
-
- bsr cpu_init_f /* run low-level CPU init code (from flash) */
- bsr board_init_f /* run low-level board init code (from flash) */
-
- /* board_init_f() does not return */
-
-/*------------------------------------------------------------------------------*/
-
-/*
- * void relocate_code (addr_sp, gd, addr_moni)
- *
- * This "function" does not return, instead it continues in RAM
- * after relocating the monitor code.
- *
- * r3 = dest
- * r4 = src
- * r5 = length in bytes
- * r6 = cachelinesize
- */
- .globl relocate_code
-relocate_code:
- link.w %a6,#0
- move.l 8(%a6), %sp /* set new stack pointer */
-
- move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
- move.l 16(%a6), %a0 /* Save copy of Destination Address */
-
- move.l #CONFIG_SYS_MONITOR_BASE, %a1
- move.l #__init_end, %a2
- move.l %a0, %a3
-
- /* copy the code to RAM */
-1:
- move.l (%a1)+, (%a3)+
- cmp.l %a1,%a2
- bgt.s 1b
-
-/*
- * We are done. Do not return, instead branch to second part of board
- * initialization, now running from RAM.
- */
- move.l %a0, %a1
- add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
- jmp (%a1)
-
-in_ram:
-
-clear_bss:
- /*
- * Now clear BSS segment
- */
- move.l %a0, %a1
- add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
- move.l %a0, %d1
- add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
-6:
- clr.l (%a1)+
- cmp.l %a1,%d1
- bgt.s 6b
-
- /*
- * fix got table in RAM
- */
- move.l %a0, %a1
- add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
- move.l %a1,%a5 /* * fix got pointer register a5 */
-
- move.l %a0, %a2
- add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
-
-7:
- move.l (%a1),%d1
- sub.l #_start,%d1
- add.l %a0,%d1
- move.l %d1,(%a1)+
- cmp.l %a2, %a1
- bne 7b
-
- /* calculate relative jump to board_init_r in ram */
- move.l %a0, %a1
- add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
-
- /* set parameters for board_init_r */
- move.l %a0,-(%sp) /* dest_addr */
- move.l %d0,-(%sp) /* gd */
- jsr (%a1)
-
-/*------------------------------------------------------------------------------*/
-/* exception code */
- .globl _fault
-_fault:
- jmp _fault
- .globl _exc_handler
-
-_exc_handler:
- SAVE_ALL
- movel %sp,%sp@-
- bsr exc_handler
- addql #4,%sp
- RESTORE_ALL
-
- .globl _int_handler
-_int_handler:
- SAVE_ALL
- movel %sp,%sp@-
- bsr int_handler
- addql #4,%sp
- RESTORE_ALL
-
-/*------------------------------------------------------------------------------*/
-
- .globl version_string
-version_string:
- .ascii U_BOOT_VERSION
- .ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
- .ascii CONFIG_IDENT_STRING, "\0"
- .align 4
generated by cgit v1.1 at 2024-11-13 13:28:40 +0000