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>

diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S
index 3752af9ddd15bb91953f833a7c8698a082992de2..5d3b4c2299ef05659066c2f259205274a5c4710e 100644 (file)
--- 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 79eb7aca387b10a66281f5c51a71508237e4a0ec..91ffdbefd1310729cae71094b1c12b875fc1389e 100644 (file)
--- 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 d2b08f60c59c7597299ebab1c3002e02ebbdf6e8..a130a1f9df7374a372f1baa29f6a9dfdd9371e56 100644 (file)
--- 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*)