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authorPeter Tyser <ptyser@xes-inc.com>2010-04-12 22:28:12 -0500
committerWolfgang Denk <wd@denx.de>2010-04-13 09:13:24 +0200
commita4145534851bf74619cb373a942613a74547bb82 (patch)
tree653ca8e04cad5da1eecac601b77f1f9b9cfd5fc5 /cpu/mcf52x2/start.S
parent84ad688473bec2875e171b71040eb9e033c6c206 (diff)
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m68k: Move cpu/$CPU to arch/m68k/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'cpu/mcf52x2/start.S')
-rw-r--r--cpu/mcf52x2/start.S335
1 files changed, 0 insertions, 335 deletions
diff --git a/cpu/mcf52x2/start.S b/cpu/mcf52x2/start.S
deleted file mode 100644
index 9ef206a..0000000
--- a/cpu/mcf52x2/start.S
+++ /dev/null
@@ -1,335 +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
-
-/* If we come from a pre-loader we don't need an initial exception
- * table.
- */
-#if !defined(CONFIG_MONITOR_IS_IN_RAM)
-
-.text
-/*
- * Vector table. This is used for initial platform startup.
- * These vectors are to catch any un-intended traps.
- */
-_vectors:
-
-.long 0x00000000 /* Flash offset is 0 until we setup CS0 */
-#if defined(CONFIG_M5282) && (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
-.long _start - TEXT_BASE
-#else
-.long _START
-#endif
-
-.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
-
-.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
-
-.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
-
-.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
-
-#endif
-
- .text
-
-
-#if defined(CONFIG_SYS_INT_FLASH_BASE) && \
- (defined(CONFIG_M5282) || defined(CONFIG_M5281))
- #if (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
- .long 0x55AA55AA,0xAA55AA55 /* CFM Backdoorkey */
- .long 0xFFFFFFFF /* all sectors protected */
- .long 0x00000000 /* supervisor/User restriction */
- .long 0x00000000 /* programm/data space restriction */
- .long 0x00000000 /* Flash security */
- #endif
-#endif
- .globl _start
-_start:
- nop
- nop
- move.w #0x2700,%sr
-
-#if defined(CONFIG_M5208)
- /* Initialize RAMBAR: locate SRAM and validate it */
- move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
- movec %d0, %RAMBAR1
-#endif
-
-#if defined(CONFIG_M5272) || defined(CONFIG_M5249) || defined(CONFIG_M5253)
- move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set MBAR address + valid flag */
- move.c %d0, %MBAR
-
- /*** The 5249 has MBAR2 as well ***/
-#ifdef CONFIG_SYS_MBAR2
- move.l #(CONFIG_SYS_MBAR2 + 1), %d0 /* Get MBAR2 address */
- movec %d0, #0xc0e /* Set MBAR2 */
-#endif
-
- move.l #(CONFIG_SYS_INIT_RAM_ADDR + 1), %d0
- movec %d0, %RAMBAR0
-#endif /* CONFIG_M5272 || CONFIG_M5249 || CONFIG_M5253 */
-
-#if defined(CONFIG_M5282) || defined(CONFIG_M5271)
- /* Initialize IPSBAR */
- move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set IPSBAR address + valid flag */
- move.l %d0, 0x40000000
-
- /* Initialize RAMBAR1: locate SRAM and validate it */
- move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
- movec %d0, %RAMBAR1
-
-#if defined(CONFIG_M5282)
-#if (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
- /* Setup code in SRAM to initialize FLASHBAR, if start from internal Flash */
-
- move.l #(_flashbar_setup-CONFIG_SYS_INT_FLASH_BASE), %a0
- move.l #(_flashbar_setup_end-CONFIG_SYS_INT_FLASH_BASE), %a1
- move.l #(CONFIG_SYS_INIT_RAM_ADDR), %a2
-_copy_flash:
- move.l (%a0)+, (%a2)+
- cmp.l %a0, %a1
- bgt.s _copy_flash
- jmp CONFIG_SYS_INIT_RAM_ADDR
-
-_flashbar_setup:
- /* Initialize FLASHBAR: locate internal Flash and validate it */
- move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
- movec %d0, %FLASHBAR
- jmp _after_flashbar_copy.L /* Force jump to absolute address */
-_flashbar_setup_end:
- nop
-_after_flashbar_copy:
-#else
- /* Setup code to initialize FLASHBAR, if start from external Memory */
- move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
- movec %d0, %FLASHBAR
-#endif /* (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE) */
-
-#endif
-#endif
- /* if we come from a pre-loader we have no exception table and
- * therefore no VBR to set
- */
-#if !defined(CONFIG_MONITOR_IS_IN_RAM)
-#if defined(CONFIG_M5282) && (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
- move.l #CONFIG_SYS_INT_FLASH_BASE, %d0
-#else
- move.l #CONFIG_SYS_FLASH_BASE, %d0
-#endif
- movec %d0, %VBR
-#endif
-
-#ifdef CONFIG_M5275
- /* Initialize IPSBAR */
- move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set IPSBAR address + valid flag */
- move.l %d0, 0x40000000
-/* movec %d0, %MBAR */
-
- /* Initialize RAMBAR: locate SRAM and validate it */
- move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
- movec %d0, %RAMBAR1
-#endif
-
- /* 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 */
-#if defined(DEBUG) && (TEXT_BASE != CONFIG_SYS_INT_FLASH_BASE) && \
- defined(CONFIG_SYS_HALT_BEFOR_RAM_JUMP)
- halt
-#endif
- 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