diff options
Diffstat (limited to 'arch/m68k/cpu/mcf547x_8x/start.S')
| -rw-r--r-- | arch/m68k/cpu/mcf547x_8x/start.S | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/arch/m68k/cpu/mcf547x_8x/start.S b/arch/m68k/cpu/mcf547x_8x/start.S deleted file mode 100644 index b70842b..0000000 --- a/arch/m68k/cpu/mcf547x_8x/start.S +++ /dev/null @@ -1,264 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de> - * Based on code from Bernhard Kuhn <bkuhn@metrowerks.com> - */ - -#include <asm-offsets.h> -#include <config.h> -#include "version.h" -#include <asm/cache.h> - -#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_0F: -.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT -.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT - -/* Reserved */ -vector10_17: -.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT - -vector18_1F: -.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT - -/* 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, %RAMBAR0 - - move.l #(CONFIG_SYS_INIT_RAM1_ADDR + CONFIG_SYS_INIT_RAM1_CTRL), %d0 - movec %d0, %RAMBAR1 - - move.l #CONFIG_SYS_MBAR, %d0 /* set MBAR address */ - move.c %d0, %MBAR - - /* invalidate and disable cache */ - move.l #0x01040100, %d0 /* Invalidate cache cmd */ - movec %d0, %CACR /* Invalidate cache */ - move.l #0, %d0 - movec %d0, %ACR0 - movec %d0, %ACR1 - movec %d0, %ACR2 - movec %d0, %ACR3 - - /* 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) - - /* put relocation table address to a5 */ - move.l #__got_start, %a5 - - /* setup stack initially on top of internal static ram */ - move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_SIZE), %sp - - /* - * if configured, malloc_f arena will be reserved first, - * then (and always) gd struct space will be reserved - */ - move.l %sp, -(%sp) - move.l #board_init_f_alloc_reserve, %a1 - jsr (%a1) - - /* update stack and frame-pointers */ - move.l %d0, %sp - move.l %sp, %fp - - /* initialize reserved area */ - move.l %d0, -(%sp) - move.l #board_init_f_init_reserve, %a1 - jsr (%a1) - - /* run low-level CPU init code (from flash) */ - jbsr cpu_init_f - - /* run low-level board init code (from flash) */ - clr.l %sp@- - jbsr board_init_f - - /* 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: - bra _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_STRING, "\0" -.align 4 |