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 ---
Changes: - Previous patch breaks legacy nand_spl boards due to local u-boot.lds. Fixed it.
arch/arm/cpu/arm1136/start.S | 31 +++++++++++++++++---------- board/freescale/mx31ads/u-boot.lds | 2 ++ nand_spl/board/freescale/mx31pdk/u-boot.lds | 2 ++ 3 files changed, 24 insertions(+), 11 deletions(-)
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S index 3752af9..5d3b4c2 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 - /* ************************************************************************* * diff --git a/board/freescale/mx31ads/u-boot.lds b/board/freescale/mx31ads/u-boot.lds index 79eb7ac..91ffdbe 100644 --- a/board/freescale/mx31ads/u-boot.lds +++ b/board/freescale/mx31ads/u-boot.lds @@ -63,6 +63,8 @@ SECTIONS
. = ALIGN(4);
+ __image_copy_end = .; + .rel.dyn : { __rel_dyn_start = .; *(.rel*) diff --git a/nand_spl/board/freescale/mx31pdk/u-boot.lds b/nand_spl/board/freescale/mx31pdk/u-boot.lds index d2b08f6..a130a1f 100644 --- a/nand_spl/board/freescale/mx31pdk/u-boot.lds +++ b/nand_spl/board/freescale/mx31pdk/u-boot.lds @@ -52,6 +52,8 @@ SECTIONS
. = ALIGN(4);
+ __image_copy_end = .; + .rel.dyn : { __rel_dyn_start = .; *(.rel*)