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authorWolfgang Denk <wd@denx.de>2010-11-12 22:24:06 +0100
committerWolfgang Denk <wd@denx.de>2010-11-12 22:24:06 +0100
commitd963e84c92a63b4e6c4f2f80482a5ecbe9b24fe0 (patch)
tree07dd5889d73f4b66ad608815adcf6f2f953d9501 /arch/arm/cpu/s3c44b0
parent66fca016057b1c6b697552cc7220ebada9d4f82d (diff)
parent0c0892be0d93a5a892b93739c5eb3bf692fed4ff (diff)
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Merge branch 'master' of /home/wd/git/u-boot/master
Diffstat (limited to 'arch/arm/cpu/s3c44b0')
-rw-r--r--arch/arm/cpu/s3c44b0/start.S92
1 files changed, 2 insertions, 90 deletions
diff --git a/arch/arm/cpu/s3c44b0/start.S b/arch/arm/cpu/s3c44b0/start.S
index 20091b2..67b2c6a 100644
--- a/arch/arm/cpu/s3c44b0/start.S
+++ b/arch/arm/cpu/s3c44b0/start.S
@@ -27,11 +27,10 @@
* MA 02111-1307 USA
*/
-
+#include <asm-offsets.h>
#include <config.h>
#include <version.h>
-
/*
* Jump vector table
*/
@@ -67,12 +66,6 @@ _start: b reset
_TEXT_BASE:
.word CONFIG_SYS_TEXT_BASE
-#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
-.globl _armboot_start
-_armboot_start:
- .word _start
-#endif
-
/*
* These are defined in the board-specific linker script.
*/
@@ -96,7 +89,6 @@ FIQ_STACK_START:
.word 0x0badc0de
#endif
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
/* IRQ stack memory (calculated at run-time) + 8 bytes */
.globl IRQ_STACK_START_IN
IRQ_STACK_START_IN:
@@ -187,7 +179,6 @@ stack_setup:
cmp r0, r6
beq clear_bss
-#ifndef CONFIG_SKIP_RELOCATE_UBOOT
copy_loop:
ldmia r0!, {r9-r10} /* copy from source address [r0] */
stmia r6!, {r9-r10} /* copy to target address [r1] */
@@ -212,7 +203,7 @@ fixloop:
str r4, [r2]
add r2, r2, #4
cmp r2, r3
- bne fixloop
+ blo fixloop
#endif
/*
now copy to sram the interrupt vector
@@ -226,7 +217,6 @@ vector_copy_loop:
stmia r1!, {r3-r10}
cmp r0, r2
blo vector_copy_loop
-#endif /* #ifndef CONFIG_SKIP_RELOCATE_UBOOT */
clear_bss:
#ifndef CONFIG_PRELOADER
@@ -266,84 +256,6 @@ clbss_l:str r2, [r0] /* clear loop... */
_board_init_r: .word board_init_r
-#else /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
-/*
- * the actual reset code
- */
-
-reset:
- /*
- * set the cpu to SVC32 mode
- */
- mrs r0,cpsr
- bic r0,r0,#0x1f
- orr r0,r0,#0x13
- msr cpsr,r0
-
- /*
- * we do sys-critical inits only at reboot,
- * not when booting from ram!
- */
-
-#ifndef CONFIG_SKIP_LOWLEVEL_INIT
- bl cpu_init_crit
- /*
- * before relocating, we have to setup RAM timing
- * because memory timing is board-dependend, you will
- * find a lowlevel_init.S in your board directory.
- */
- bl lowlevel_init
-#endif
-
-#ifndef CONFIG_SKIP_RELOCATE_UBOOT
-relocate: /* relocate U-Boot to RAM */
- adr r0, _start /* r0 <- current position of code */
- ldr r1, _TEXT_BASE /* test if we run from flash or RAM */
- cmp r0, r1 /* don't reloc during debug */
- beq stack_setup
-
- ldr r2, _armboot_start
- ldr r3, _bss_start
- sub r2, r3, r2 /* r2 <- size of armboot */
- add r2, r0, r2 /* r2 <- source end address */
-
-copy_loop:
- ldmia r0!, {r3-r10} /* copy from source address [r0] */
- stmia r1!, {r3-r10} /* copy to target address [r1] */
- cmp r0, r2 /* until source end address [r2] */
- blo copy_loop
-
-/*
- now copy to sram the interrupt vector
-*/
- adr r0, real_vectors
- add r2, r0, #1024
- ldr r1, =0x0c000000
- add r1, r1, #0x08
-vector_copy_loop:
- ldmia r0!, {r3-r10}
- stmia r1!, {r3-r10}
- cmp r0, r2
- blo vector_copy_loop
-#endif /* CONFIG_SKIP_RELOCATE_UBOOT */
-
- /* Set up the stack */
-stack_setup:
- ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
- sub r0, r0, #CONFIG_SYS_MALLOC_LEN /* malloc area */
- sub r0, r0, #CONFIG_SYS_GBL_DATA_SIZE /* bdinfo */
-#ifdef CONFIG_USE_IRQ
- sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
-#endif
- sub sp, r0, #12 /* leave 3 words for abort-stack */
- bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
-
- ldr pc, _start_armboot
-
-_start_armboot: .word start_armboot
-
-#endif /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
-
/*
*************************************************************************
*