X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Farm%2Fcpu%2Farm_intcm%2Fstart.S;h=5e8c5289fc63c8491cd0566361b7b9f696ebea6e;hb=fb7383a7a27a6ae2442b7f0db89831478192fd2d;hp=fcaba30f586b6896b472eeff5ab4b4f3e2592010;hpb=41bb7531e1382e730b8a6b06d249ea72d936c468;p=u-boot diff --git a/arch/arm/cpu/arm_intcm/start.S b/arch/arm/cpu/arm_intcm/start.S index fcaba30f58..5e8c5289fc 100644 --- a/arch/arm/cpu/arm_intcm/start.S +++ b/arch/arm/cpu/arm_intcm/start.S @@ -5,8 +5,8 @@ * * ----- Adapted for OMAP1610 OMAP730 from ARM925t code ------ * - * Copyright (c) 2001 Marius Gröger - * Copyright (c) 2002 Alex Züpke + * Copyright (c) 2001 Marius Gröger + * Copyright (c) 2002 Alex Züpke * Copyright (c) 2002 Gary Jennejohn * Copyright (c) 2003 Richard Woodruff * Copyright (c) 2003 Kshitij @@ -85,7 +85,11 @@ _fiq: .globl _TEXT_BASE _TEXT_BASE: - .word CONFIG_SYS_TEXT_BASE /* address of _start in the linked image */ +#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_TEXT_BASE) + .word CONFIG_SPL_TEXT_BASE +#else + .word CONFIG_SYS_TEXT_BASE +#endif /* * These are defined in the board-specific linker script. @@ -97,8 +101,16 @@ _TEXT_BASE: _bss_start_ofs: .word __bss_start - _start +.globl _image_copy_end_ofs +_image_copy_end_ofs: + .word __image_copy_end - _start + .globl _bss_end_ofs _bss_end_ofs: + .word __bss_end - _start + +.globl _end_ofs +_end_ofs: .word _end - _start #ifdef CONFIG_USE_IRQ @@ -139,51 +151,37 @@ reset: bl cpu_init_crit #endif -/* Set stackpointer in internal RAM to call board_init_f */ -call_board_init_f: - ldr sp, =(CONFIG_SYS_INIT_SP_ADDR) - ldr r0,=0x00000000 - bl board_init_f + bl _main /*------------------------------------------------------------------------------*/ /* - * void relocate_code (addr_sp, gd, addr_moni) - * - * This "function" does not return, instead it continues in RAM - * after relocating the monitor code. + * void relocate_code(addr_moni) * + * This function relocates the monitor code. */ .globl relocate_code relocate_code: - mov r4, r0 /* save addr_sp */ - mov r5, r1 /* save addr of gd */ - mov r6, r2 /* save addr of destination */ - mov r7, r2 /* save addr of destination */ - - /* Set up the stack */ -stack_setup: - mov sp, r4 + mov r6, r0 /* save addr of destination */ adr r0, _start - ldr r2, _TEXT_BASE - ldr r3, _bss_start_ofs + subs r9, r6, r0 /* r9 <- relocation offset */ + beq relocate_done /* skip relocation */ + mov r1, r6 /* r1 <- scratch for copy_loop */ + ldr r3, _image_copy_end_ofs add r2, r0, r3 /* r2 <- source end address */ - cmp r0, r6 - beq clear_bss copy_loop: - ldmia r0!, {r9-r10} /* copy from source address [r0] */ - stmia r6!, {r9-r10} /* copy to target address [r1] */ + ldmia r0!, {r10-r11} /* copy from source address [r0] */ + stmia r1!, {r10-r11} /* copy to target address [r1] */ cmp r0, r2 /* until source end address [r2] */ blo copy_loop -#ifndef CONFIG_PRELOADER +#ifndef CONFIG_SPL_BUILD /* * fix .rel.dyn relocations */ ldr r0, _TEXT_BASE /* r0 <- Text base */ - sub r9, r7, r0 /* r9 <- relocation offset */ ldr r10, _dynsym_start_ofs /* r10 <- sym table ofs */ add r10, r10, r0 /* r10 <- sym table in FLASH */ ldr r2, _rel_dyn_start_ofs /* r2 <- rel dyn start ofs */ @@ -194,10 +192,10 @@ fixloop: ldr r0, [r2] /* r0 <- location to fix up, IN FLASH! */ add r0, r0, r9 /* r0 <- location to fix up in RAM */ ldr r1, [r2, #4] - and r8, r1, #0xff - cmp r8, #23 /* relative fixup? */ + and r7, r1, #0xff + cmp r7, #23 /* relative fixup? */ beq fixrel - cmp r8, #2 /* absolute fixup? */ + cmp r7, #2 /* absolute fixup? */ beq fixabs /* ignore unknown type of fixup */ b fixnext @@ -206,7 +204,7 @@ fixabs: mov r1, r1, LSR #4 /* r1 <- symbol index in .dynsym */ add r1, r10, r1 /* r1 <- address of symbol in table */ ldr r1, [r1, #4] /* r1 <- symbol value */ - add r1, r9 /* r1 <- relocated sym addr */ + add r1, r1, r9 /* r1 <- relocated sym addr */ b fixnext fixrel: /* relative fix: increase location by offset */ @@ -219,49 +217,9 @@ fixnext: blo fixloop #endif -clear_bss: -#ifndef CONFIG_PRELOADER - ldr r0, _bss_start_ofs - ldr r1, _bss_end_ofs - ldr r3, _TEXT_BASE /* Text base */ - mov r4, r7 /* reloc addr */ - add r0, r0, r4 - add r1, r1, r4 - mov r2, #0x00000000 /* clear */ - -clbss_l:str r2, [r0] /* clear loop... */ - add r0, r0, #4 - cmp r0, r1 - bne clbss_l - - bl coloured_LED_init - bl red_LED_on -#endif +relocate_done: -/* - * We are done. Do not return, instead branch to second part of board - * initialization, now running from RAM. - */ -#ifdef CONFIG_NAND_SPL - ldr r0, _nand_boot_ofs - mov pc, r0 - -_nand_boot_ofs: - .word nand_boot -#else - ldr r0, _board_init_r_ofs - adr r1, _start - add lr, r0, r1 - add lr, lr, r9 - /* setup parameters for board_init_r */ - mov r0, r5 /* gd_t */ - mov r1, r7 /* dest_addr */ - /* jump to it ... */ - mov pc, lr - -_board_init_r_ofs: - .word board_init_r - _start -#endif + bx lr _rel_dyn_start_ofs: .word __rel_dyn_start - _start @@ -270,6 +228,11 @@ _rel_dyn_end_ofs: _dynsym_start_ofs: .word __dynsym_start - _start + .globl c_runtime_cpu_setup +c_runtime_cpu_setup: + + mov pc, lr + /* ************************************************************************* *