arm: fixloop(): do not use r8 for relocation

[karo-tx-uboot.git] / arch / arm / cpu / pxa / start.S

diff --git a/arch/arm/cpu/pxa/start.S b/arch/arm/cpu/pxa/start.S
index 03cf4dec36bbd4f8b149050325475a56d4002e64..0580adce17fb4c311f5529c2eb9f819e629e3aa8 100644 (file)
--- a/arch/arm/cpu/pxa/start.S
+++ b/arch/arm/cpu/pxa/start.S
@@ -33,7 +33,6 @@
 #include <config.h>
 #include <version.h>
 #include <asm/arch/pxa-regs.h>
-#include <asm/arch/macro.h>
 
 /* takes care the CP15 update has taken place */
 .macro CPWAIT reg
@@ -221,6 +220,7 @@ zerojmp:
 /* 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
 
@@ -238,24 +238,23 @@ 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
 
        adr     r0, _start
+       cmp     r0, r6
+       beq     clear_bss               /* skip relocation */
+       mov     r1, r6                  /* r1 <- scratch for copy_loop */
        ldr     r2, _TEXT_BASE
        ldr     r3, _bss_start_ofs
        add     r2, r0, r3              /* r2 <- source end address         */
-       cmp     r0, r6
-       beq     clear_bss
 
-#ifndef CONFIG_SKIP_RELOCATE_UBOOT
        stmfd sp!, {r0-r12}
 copy_loop:
        ldmia   r0!, {r3-r5, r7-r11}    /* copy from source address [r0]    */
-       stmia   r6!, {r3-r5, r7-r11}    /* copy to   target address [r1]    */
+       stmia   r1!, {r3-r5, r7-r11}    /* copy to   target address [r1]    */
        cmp     r0, r2                  /* until source end address [r2]    */
        blo     copy_loop
        ldmfd sp!, {r0-r12}
@@ -265,7 +264,7 @@ copy_loop:
         * fix .rel.dyn relocations
         */
        ldr     r0, _TEXT_BASE          /* r0 <- Text base */
-       sub     r9, r7, r0              /* r9 <- relocation offset */
+       sub     r9, r6, 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 */
@@ -276,10 +275,10 @@ fixloop:
        ldr     r0, [r2]        /* r0 <- location to fix up, IN FLASH! */
        add     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
@@ -300,14 +299,13 @@ fixnext:
        cmp     r2, r3
        blo     fixloop
 #endif /* #ifndef CONFIG_PRELOADER */
-#endif /* #ifndef CONFIG_SKIP_RELOCATE_UBOOT */
 
 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 */
+       mov     r4, r6                  /* reloc addr */
        add     r0, r0, r4
        add     r1, r1, r4
        mov     r2, #0x00000000         /* clear                            */
@@ -332,12 +330,10 @@ _start_oneboot_ofs
        ldr     r0, _board_init_r_ofs
        adr     r1, _start
        add     lr, r0, r1
-#ifndef CONFIG_SKIP_RELOCATE_UBOOT
        add     lr, lr, r9
-#endif
        /* setup parameters for board_init_r */
        mov     r0, r5          /* gd_t */
-       mov     r1, r7          /* dest_addr */
+       mov     r1, r6          /* dest_addr */
        /* jump to it ... */
        mov     pc, lr