diff options
Diffstat (limited to 'package/uboot-ifxmips/files/cpu/mips/danube/start.S')
| -rw-r--r-- | package/uboot-ifxmips/files/cpu/mips/danube/start.S | 442 |
1 files changed, 0 insertions, 442 deletions
diff --git a/package/uboot-ifxmips/files/cpu/mips/danube/start.S b/package/uboot-ifxmips/files/cpu/mips/danube/start.S deleted file mode 100644 index b1ee491d3b..0000000000 --- a/package/uboot-ifxmips/files/cpu/mips/danube/start.S +++ /dev/null @@ -1,442 +0,0 @@ -/* - * Startup Code for MIPS32 CPU-core - * - * Copyright (c) 2003 Wolfgang Denk <wd@denx.de> - * - * 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> -#include <asm/regdef.h> -#include <asm/mipsregs.h> -#if defined(CONFIG_IFX_MIPS) -#include "ifx_start.S" -#endif - -#define RVECENT(f,n) \ - b f; nop -#define XVECENT(f,bev) \ - b f ; \ - li k0,bev - - .set noreorder - - .globl _start - .text -_start: - RVECENT(reset,0) /* U-boot entry point */ - RVECENT(reset,1) /* software reboot */ -#if defined(CONFIG_INCA_IP) - .word INFINEON_EBU_BOOTCFG /* EBU init code, fetched during booting */ - .word 0x00000000 /* phase of the flash */ -#elif defined(CONFIG_IFX_MIPS) && defined(IFX_EBU_BOOTCFG_DWORD) - IFX_EBU_BOOTCFG_DWORD -#elif defined(CONFIG_PURPLE) - .word INFINEON_EBU_BOOTCFG /* EBU init code, fetched during booting */ - .word INFINEON_EBU_BOOTCFG /* EBU init code, fetched during booting */ -#else - RVECENT(romReserved,2) -#endif - RVECENT(romReserved,3) - RVECENT(romReserved,4) - RVECENT(romReserved,5) - RVECENT(romReserved,6) - RVECENT(romReserved,7) - RVECENT(romReserved,8) - RVECENT(romReserved,9) - RVECENT(romReserved,10) - RVECENT(romReserved,11) - RVECENT(romReserved,12) - RVECENT(romReserved,13) - RVECENT(romReserved,14) - RVECENT(romReserved,15) - RVECENT(romReserved,16) - RVECENT(romReserved,17) - RVECENT(romReserved,18) - RVECENT(romReserved,19) - RVECENT(romReserved,20) - RVECENT(romReserved,21) - RVECENT(romReserved,22) - RVECENT(romReserved,23) - RVECENT(romReserved,24) - RVECENT(romReserved,25) - RVECENT(romReserved,26) - RVECENT(romReserved,27) - RVECENT(romReserved,28) - RVECENT(romReserved,29) - RVECENT(romReserved,30) - RVECENT(romReserved,31) - RVECENT(romReserved,32) - RVECENT(romReserved,33) - RVECENT(romReserved,34) - RVECENT(romReserved,35) - RVECENT(romReserved,36) - RVECENT(romReserved,37) - RVECENT(romReserved,38) - RVECENT(romReserved,39) - RVECENT(romReserved,40) - RVECENT(romReserved,41) - RVECENT(romReserved,42) - RVECENT(romReserved,43) - RVECENT(romReserved,44) - RVECENT(romReserved,45) - RVECENT(romReserved,46) - RVECENT(romReserved,47) - RVECENT(romReserved,48) - RVECENT(romReserved,49) - RVECENT(romReserved,50) - RVECENT(romReserved,51) - RVECENT(romReserved,52) - RVECENT(romReserved,53) - RVECENT(romReserved,54) - RVECENT(romReserved,55) - RVECENT(romReserved,56) - RVECENT(romReserved,57) - RVECENT(romReserved,58) - RVECENT(romReserved,59) - RVECENT(romReserved,60) - RVECENT(romReserved,61) - RVECENT(romReserved,62) - RVECENT(romReserved,63) - XVECENT(romExcHandle,0x200) /* bfc00200: R4000 tlbmiss vector */ - RVECENT(romReserved,65) - RVECENT(romReserved,66) - RVECENT(romReserved,67) - RVECENT(romReserved,68) - RVECENT(romReserved,69) - RVECENT(romReserved,70) - RVECENT(romReserved,71) - RVECENT(romReserved,72) - RVECENT(romReserved,73) - RVECENT(romReserved,74) - RVECENT(romReserved,75) - RVECENT(romReserved,76) - RVECENT(romReserved,77) - RVECENT(romReserved,78) - RVECENT(romReserved,79) - XVECENT(romExcHandle,0x280) /* bfc00280: R4000 xtlbmiss vector */ - RVECENT(romReserved,81) - RVECENT(romReserved,82) - RVECENT(romReserved,83) - RVECENT(romReserved,84) - RVECENT(romReserved,85) - RVECENT(romReserved,86) - RVECENT(romReserved,87) - RVECENT(romReserved,88) - RVECENT(romReserved,89) - RVECENT(romReserved,90) - RVECENT(romReserved,91) - RVECENT(romReserved,92) - RVECENT(romReserved,93) - RVECENT(romReserved,94) - RVECENT(romReserved,95) - XVECENT(romExcHandle,0x300) /* bfc00300: R4000 cache vector */ - RVECENT(romReserved,97) - RVECENT(romReserved,98) - RVECENT(romReserved,99) - RVECENT(romReserved,100) - RVECENT(romReserved,101) - RVECENT(romReserved,102) - RVECENT(romReserved,103) - RVECENT(romReserved,104) - RVECENT(romReserved,105) - RVECENT(romReserved,106) - RVECENT(romReserved,107) - RVECENT(romReserved,108) - RVECENT(romReserved,109) - RVECENT(romReserved,110) - RVECENT(romReserved,111) - XVECENT(romExcHandle,0x380) /* bfc00380: R4000 general vector */ - RVECENT(romReserved,113) - RVECENT(romReserved,114) - RVECENT(romReserved,115) - RVECENT(romReserved,116) - RVECENT(romReserved,116) - RVECENT(romReserved,118) - RVECENT(romReserved,119) - RVECENT(romReserved,120) - RVECENT(romReserved,121) - RVECENT(romReserved,122) - RVECENT(romReserved,123) - RVECENT(romReserved,124) - RVECENT(romReserved,125) - RVECENT(romReserved,126) - RVECENT(romReserved,127) - - /* We hope there are no more reserved vectors! - * 128 * 8 == 1024 == 0x400 - * so this is address R_VEC+0x400 == 0xbfc00400 - */ -#if defined(CONFIG_IFX_MIPS) && defined(IFX_MORE_RESERVED_VECTORS) - IFX_MORE_RESERVED_VECTORS -#else -#ifdef CONFIG_PURPLE -/* 0xbfc00400 */ - .word 0xdc870000 - .word 0xfca70000 - .word 0x20840008 - .word 0x20a50008 - .word 0x20c6ffff - .word 0x14c0fffa - .word 0x00000000 - .word 0x03e00008 - .word 0x00000000 - .word 0x00000000 -/* 0xbfc00428 */ - .word 0xdc870000 - .word 0xfca70000 - .word 0x20840008 - .word 0x20a50008 - .word 0x20c6ffff - .word 0x14c0fffa - .word 0x00000000 - .word 0x03e00008 - .word 0x00000000 - .word 0x00000000 -#endif /* CONFIG_PURPLE */ -#endif /* CONFIG_IFX_MIPS */ - .align 4 -reset: -#if defined(CONFIG_IFX_MIPS) && defined(IFX_RESET_PRECHECK) - IFX_RESET_PRECHECK -#endif - /* Clear watch registers. - */ - mtc0 zero, CP0_WATCHLO - mtc0 zero, CP0_WATCHHI - - /* STATUS register */ -#ifdef CONFIG_TB0229 - li k0, ST0_CU0 -#else - mfc0 k0, CP0_STATUS -#endif - li k1, ~ST0_IE - and k0, k1 - mtc0 k0, CP0_STATUS - - /* CAUSE register */ - mtc0 zero, CP0_CAUSE - -#if defined(CONFIG_IFX_MIPS) && defined(IFX_CPU_EXTRA_INIT) - IFX_CPU_EXTRA_INIT -#endif - - /* Init Timer */ - mtc0 zero, CP0_COUNT - mtc0 zero, CP0_COMPARE - - /* CONFIG0 register */ - li t0, CONF_CM_UNCACHED - mtc0 t0, CP0_CONFIG - - /* Initialize GOT pointer. - */ - bal 1f - nop - .word _GLOBAL_OFFSET_TABLE_ - 1: - move gp, ra - lw t1, 0(ra) - move gp, t1 - -#ifdef CONFIG_INCA_IP - /* Disable INCA-IP Watchdog. - */ - la t9, disable_incaip_wdt - jalr t9 - nop -#endif - - /* Initialize any external memory. - */ - la t9, lowlevel_init - jalr t9 - nop - - /* Initialize caches... - */ - la t9, mips_cache_reset - jalr t9 - nop - - /* ... and enable them. - */ -#if defined(CONFIG_IFX_MIPS) && defined(IFX_CACHE_OPER_MODE) - IFX_CACHE_OPER_MODE -#else - li t0, CONF_CM_CACHABLE_NONCOHERENT -#endif - mtc0 t0, CP0_CONFIG - - - /* Set up temporary stack. - */ - li a0, CFG_INIT_SP_OFFSET - la t9, mips_cache_lock - jalr t9 - nop - - li t0, CFG_SDRAM_BASE + CFG_INIT_SP_OFFSET - la sp, 0(t0) - - la t9, board_init_f - j t9 - nop - -#ifdef CFG_HEAD_CODE -/* - * void jump_unconditional (addr) - * This function simply jumps to the location pointed by a0. - * a0 = target_location - * - */ - .globl jump_unconditional - .ent jump_unconditional -jump_unconditional: - move t9, a0 - j t9 - nop - .end jump_unconditional - -#endif - -/* - * void relocate_code (addr_sp, gd, addr_moni) - * - * This "function" does not return, instead it continues in RAM - * after relocating the monitor code. - * - * a0 = addr_sp - * a1 = gd - * a2 = destination address - */ - .globl relocate_code - .ent relocate_code -relocate_code: - move sp, a0 /* Set new stack pointer */ - -#ifdef CFG_HEAD_CODE - li t0, CFG_HEAD_BASE -#else - li t0, CFG_MONITOR_BASE -#endif - la t3, in_ram - lw t2, -12(t3) /* t2 <-- uboot_end_data */ - move t1, a2 - - /* - * Fix GOT pointer: - * - * New GOT-PTR = (old GOT-PTR - CFG_MONITOR_BASE) + Destination Address - */ - move t6, gp -#ifdef CFG_HEAD_CODE - sub gp, CFG_HEAD_BASE -#else - sub gp, CFG_MONITOR_BASE -#endif - add gp, a2 /* gp now adjusted */ - sub t6, gp, t6 /* t6 <-- relocation offset */ - - /* - * t0 = source address - * t1 = target address - * t2 = source end address - */ - /* On the purple board we copy the code earlier in a special way - * in order to solve flash problems - */ -#ifndef CONFIG_PURPLE -1: - lw t3, 0(t0) - sw t3, 0(t1) - addu t0, 4 - ble t0, t2, 1b - addu t1, 4 /* delay slot */ -#endif - - /* If caches were enabled, we would have to flush them here. - */ - - /* Jump to where we've relocated ourselves. - */ - addi t0, a2, in_ram - _start - j t0 - nop - - .word uboot_end_data - .word uboot_end - .word num_got_entries - -in_ram: - /* Now we want to update GOT. - */ - lw t3, -4(t0) /* t3 <-- num_got_entries */ - addi t4, gp, 8 /* Skipping first two entries. */ - li t2, 2 -1: - lw t1, 0(t4) - beqz t1, 2f - add t1, t6 - sw t1, 0(t4) -2: - addi t2, 1 - blt t2, t3, 1b - addi t4, 4 /* delay slot */ - - /* Clear BSS. - */ - lw t1, -12(t0) /* t1 <-- uboot_end_data */ - lw t2, -8(t0) /* t2 <-- uboot_end */ - add t1, t6 /* adjust pointers */ - add t2, t6 - - sub t1, 4 -1: addi t1, 4 - bltl t1, t2, 1b - sw zero, 0(t1) /* delay slot */ - - move a0, a1 - la t9, board_init_r - j t9 - move a1, a2 /* delay slot */ - - .end relocate_code - - - /* Exception handlers. - */ -romReserved: - b romReserved - -romExcHandle: - b romExcHandle - - /* Additional handlers. - */ -#if defined(CONFIG_IFX_MIPS) -#if defined(IFX_MIPS_HANDLER_1) -ifx_mips_handler_1: - IFX_MIPS_HANDLER_1 -#endif -#endif - |