diff options
| author | Stefano Babic <sbabic@denx.de> | 2012-10-10 21:11:41 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2012-10-26 16:27:58 +0200 |
| commit | b736e4b929197b5141b883f4f3906c4bd38dd4f3 (patch) | |
| tree | 85d51c4fdf4571f20f11f1c06af430c581ee92a9 /arch/arm/cpu | |
| parent | 01968b96a24414ff8f0735111907cbb750c7af43 (diff) | |
ARM: Fix start.S when used with SPL in arm1136
This patch modifies start.S for the arm1136 to make it
conform to start.S in armv7 architecture, to make it
usable if the SPL framework is used.
Signed-off-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/arm1136/start.S | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S index 3752af9ddd..5d3b4c2299 100644 --- a/arch/arm/cpu/arm1136/start.S +++ b/arch/arm/cpu/arm1136/start.S @@ -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 @@ -193,7 +197,7 @@ stack_setup: moveq r9, #0 /* no relocation. relocation offset(r9) = 0 */ beq clear_bss /* 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: @@ -241,15 +245,28 @@ fixnext: add r2, r2, #8 /* each rel.dyn entry is 8 bytes */ cmp r2, r3 blo fixloop + b clear_bss + +_rel_dyn_start_ofs: + .word __rel_dyn_start - _start +_rel_dyn_end_ofs: + .word __rel_dyn_end - _start +_dynsym_start_ofs: + .word __dynsym_start - _start #endif clear_bss: -#ifndef CONFIG_SPL_BUILD +#ifdef CONFIG_SPL_BUILD + /* No relocation for SPL */ + ldr r0, =__bss_start + ldr r1, =__bss_end__ +#else ldr r0, _bss_start_ofs ldr r1, _bss_end_ofs mov r4, r6 /* reloc addr */ add r0, r0, r4 add r1, r1, r4 +#endif mov r2, #0x00000000 /* clear */ clbss_l:cmp r0, r1 /* clear loop... */ @@ -258,7 +275,6 @@ clbss_l:cmp r0, r1 /* clear loop... */ add r0, r0, #4 b clbss_l clbss_e: -#endif /* #ifndef CONFIG_SPL_BUILD */ /* * We are done. Do not return, instead branch to second part of board @@ -273,7 +289,7 @@ _nand_boot_ofs: #else jump_2_ram: ldr r0, _board_init_r_ofs - ldr r1, _TEXT_BASE + adr r1, _start add lr, r0, r1 add lr, lr, r9 /* setup parameters for board_init_r */ @@ -286,13 +302,6 @@ _board_init_r_ofs: .word board_init_r - _start #endif -_rel_dyn_start_ofs: - .word __rel_dyn_start - _start -_rel_dyn_end_ofs: - .word __rel_dyn_end - _start -_dynsym_start_ofs: - .word __dynsym_start - _start - /* ************************************************************************* * |