X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Farm%2Fcpu%2Farm1136%2Fstart.S;h=a067b8a1868182f33e6b9e11a980d19ae004186d;hb=612404c28a64a6df300642a1550a65dcc8e01f82;hp=200a80018578242b52a2b3ea463ec704e4295fa8;hpb=e47f2db5371047eb9bcd115fee084e6a8a92a239;p=u-boot diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S index 200a800185..a067b8a186 100644 --- a/arch/arm/cpu/arm1136/start.S +++ b/arch/arm/cpu/arm1136/start.S @@ -3,8 +3,8 @@ * * Copyright (c) 2004 Texas Instruments * - * 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 @@ -33,7 +33,7 @@ #include .globl _start _start: b reset -#ifdef CONFIG_PRELOADER +#ifdef CONFIG_SPL_BUILD ldr pc, _hang ldr pc, _hang ldr pc, _hang @@ -68,7 +68,7 @@ _not_used: .word not_used _irq: .word irq _fiq: .word fiq _pad: .word 0x12345678 /* now 16*4=64 */ -#endif /* CONFIG_PRELOADER */ +#endif /* CONFIG_SPL_BUILD */ .global _end_vect _end_vect: @@ -100,6 +100,10 @@ _TEXT_BASE: _bss_start_ofs: .word __bss_start - _start +.global _image_copy_end_ofs +_image_copy_end_ofs: + .word __image_copy_end - _start + .globl _bss_end_ofs _bss_end_ofs: .word __bss_end__ - _start @@ -161,13 +165,7 @@ next: 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) - bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ - ldr r0,=0x00000000 - - bl board_init_f + bl _main /*------------------------------------------------------------------------------*/ @@ -184,15 +182,12 @@ relocate_code: mov r5, r1 /* save addr of gd */ mov r6, r2 /* save addr of destination */ - /* Set up the stack */ -stack_setup: - mov sp, r4 - adr r0, _start cmp r0, r6 - beq clear_bss /* skip relocation */ + moveq r9, #0 /* no relocation. relocation offset(r9) = 0 */ + beq relocate_done /* skip relocation */ mov r1, r6 /* r1 <- scratch for copy_loop */ - ldr r3, _bss_start_ofs + ldr r3, _image_copy_end_ofs add r2, r0, r3 /* r2 <- source end address */ copy_loop: @@ -201,7 +196,7 @@ copy_loop: cmp r0, r2 /* until source end address [r2] */ blo copy_loop -#ifndef CONFIG_PRELOADER +#ifndef CONFIG_SPL_BUILD /* * fix .rel.dyn relocations */ @@ -240,48 +235,15 @@ fixnext: add r2, r2, #8 /* each rel.dyn entry is 8 bytes */ cmp r2, r3 blo fixloop + bx lr + #endif -clear_bss: -#ifndef CONFIG_PRELOADER - ldr r0, _bss_start_ofs - ldr r1, _bss_end_ofs - mov r4, r6 /* 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 -#endif /* #ifndef CONFIG_PRELOADER */ +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 + bx lr -_nand_boot_ofs: - .word nand_boot -#else -jump_2_ram: - ldr r0, _board_init_r_ofs - ldr r1, _TEXT_BASE - add lr, r0, r1 - add lr, lr, r9 - /* setup parameters for board_init_r */ - mov r0, r5 /* gd_t */ - mov r1, r6 /* dest_addr */ - /* jump to it ... */ - mov pc, lr - -_board_init_r_ofs: - .word board_init_r - _start -#endif +#ifndef CONFIG_SPL_BUILD _rel_dyn_start_ofs: .word __rel_dyn_start - _start @@ -290,6 +252,13 @@ _rel_dyn_end_ofs: _dynsym_start_ofs: .word __dynsym_start - _start +#endif + + .globl c_runtime_cpu_setup +c_runtime_cpu_setup: + + bx lr + /* ************************************************************************* * @@ -329,7 +298,7 @@ cpu_init_crit: mov pc, lr /* back to my caller */ #endif /* CONFIG_SKIP_LOWLEVEL_INIT */ -#ifndef CONFIG_PRELOADER +#ifndef CONFIG_SPL_BUILD /* ************************************************************************* * @@ -436,17 +405,17 @@ cpu_init_crit: .macro get_fiq_stack @ setup FIQ stack ldr sp, FIQ_STACK_START .endm -#endif /* CONFIG_PRELOADER */ +#endif /* CONFIG_SPL_BUILD */ /* * exception handlers */ -#ifdef CONFIG_PRELOADER +#ifdef CONFIG_SPL_BUILD .align 5 do_hang: ldr sp, _TEXT_BASE /* use 32 words about stack */ bl hang /* hang and never return */ -#else /* !CONFIG_PRELOADER */ +#else /* !CONFIG_SPL_BUILD */ .align 5 undefined_instruction: get_bad_stack @@ -519,4 +488,4 @@ arm1136_cache_flush: mcr p15, 0, r1, c7, c14, 0 @ invalidate D cache #endif mov pc, lr @ back to caller -#endif /* CONFIG_PRELOADER */ +#endif /* CONFIG_SPL_BUILD */