arm: remove useless code in start.S files

[glsdk/glsdk-u-boot.git] / arch / arm / cpu / arm925t / start.S

diff --git a/arch/arm/cpu/arm925t/start.S b/arch/arm/cpu/arm925t/start.S
index 6d6d8f85043541d88b143b164210b7a56e392ded..e8d6d71c1701613e7781846c6ecfe25d57ee0b1e 100644 (file)
--- a/arch/arm/cpu/arm925t/start.S
+++ b/arch/arm/cpu/arm925t/start.S
@@ -5,8 +5,8 @@
  *
  *  ----- Adapted for OMAP1510 from ARM920 code ------
  *
- *  Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
- *  Copyright (c) 2002 Alex Züpke <azu@sysgo.de>
+ *  Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
+ *  Copyright (c) 2002 Alex Züpke <azu@sysgo.de>
  *  Copyright (c) 2002 Gary Jennejohn <garyj@denx.de>
  *  Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com>
  *  Copyright (c) 2003 Kshitij  <kshitij@ti.com>
@@ -34,10 +34,6 @@
 #include <config.h>
 #include <version.h>
 
-#if defined(CONFIG_OMAP1510)
-#include <./configs/omap1510.h>
-#endif
-
 /*
  *************************************************************************
  *
@@ -97,6 +93,10 @@ _bss_start_ofs:
 
 .globl _bss_end_ofs
 _bss_end_ofs:
+       .word __bss_end__ - _start
+
+.globl _end_ofs
+_end_ofs:
        .word _end - _start
 
 #ifdef CONFIG_USE_IRQ
@@ -172,12 +172,7 @@ poll1:
        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
 
 /*------------------------------------------------------------------------------*/
 
@@ -194,17 +189,13 @@ 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
+       moveq   r9, #0          /* no relocation. relocation offset(r9) = 0 */
+       beq     relocate_done           /* 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
 
 copy_loop:
        ldmia   r0!, {r9-r10}           /* copy from source address [r0]    */
@@ -212,7 +203,7 @@ copy_loop:
        cmp     r0, r2                  /* until source end address [r2]    */
        blo     copy_loop
 
-#ifndef CONFIG_PRELOADER
+#ifndef CONFIG_SPL_BUILD
        /*
         * fix .rel.dyn relocations
         */
@@ -228,10 +219,10 @@ fixloop:
        ldr     r0, [r2]                /* r0 <- location to fix up, IN FLASH! */
        add     r0, 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
@@ -240,7 +231,7 @@ fixabs:
        mov     r1, r1, LSR #4          /* r1 <- symbol index in .dynsym */
        add     r1, r10, r1             /* r1 <- address of symbol in table */
        ldr     r1, [r1, #4]            /* r1 <- symbol value */
-       add     r1, r9                  /* r1 <- relocated sym addr */
+       add     r1, r1, r9              /* r1 <- relocated sym addr */
        b       fixnext
 fixrel:
        /* relative fix: increase location by offset */
@@ -253,50 +244,10 @@ fixnext:
        blo     fixloop
 #endif
 
-clear_bss:
-#ifndef CONFIG_PRELOADER
-       ldr     r0, _bss_start_ofs
-       ldr     r1, _bss_end_ofs
-       ldr     r3, _TEXT_BASE          /* Text base */
-       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
-
-       bl coloured_LED_init
-       bl red_LED_on
-#endif
-
-/*
- * 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
+relocate_done:
 
-_nand_boot_ofs:
-       .word nand_boot
-#else
-       ldr     r0, _board_init_r_ofs
-       adr     r1, _start
-       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
-
 _rel_dyn_start_ofs:
        .word __rel_dyn_start - _start
 _rel_dyn_end_ofs:
@@ -304,6 +255,11 @@ _rel_dyn_end_ofs:
 _dynsym_start_ofs:
        .word __dynsym_start - _start
 
+       .globl  c_runtime_cpu_setup
+c_runtime_cpu_setup:
+
+       mov     pc, lr
+
 /*
  *************************************************************************
  *