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-rw-r--r--arch/arm/cpu/arm1136/start.S146
1 files changed, 9 insertions, 137 deletions
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S
index 29ed065c0..aecc943c8 100644
--- a/arch/arm/cpu/arm1136/start.S
+++ b/arch/arm/cpu/arm1136/start.S
@@ -28,6 +28,7 @@
* MA 02111-1307 USA
*/
+#include <asm-offsets.h>
#include <config.h>
#include <version.h>
.globl _start
@@ -131,14 +132,11 @@ 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:
.word 0x0badc0de
-#endif
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
/*
* the actual reset code
*/
@@ -217,7 +215,6 @@ 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] */
@@ -237,13 +234,13 @@ copy_loop:
ldr r3, _rel_dyn_end_ofs /* r3 <- rel dyn end ofs */
add r3, r3, r0 /* r3 <- rel dyn end in FLASH */
fixloop:
- ldr r0, [r2] /* r0 <- location to fix up, IN FLASH! */
- add r0, r9 /* r0 <- location to fix up in RAM */
+ 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? */
+ cmp r8, #23 /* relative fixup? */
beq fixrel
- cmp r8, #2 /* absolute fixup? */
+ cmp r8, #2 /* absolute fixup? */
beq fixabs
/* ignore unknown type of fixup */
b fixnext
@@ -260,11 +257,10 @@ fixrel:
add r1, r1, r9
fixnext:
str r1, [r0]
- add r2, r2, #8 /* each rel.dyn entry is 8 bytes */
+ add r2, r2, #8 /* each rel.dyn entry is 8 bytes */
cmp r2, r3
- ble fixloop
+ blo fixloop
#endif
-#endif /* #ifndef CONFIG_SKIP_RELOCATE_UBOOT */
clear_bss:
#ifndef CONFIG_PRELOADER
@@ -296,8 +292,8 @@ _nand_boot_ofs
jump_2_ram:
ldr r0, _board_init_r_ofs
adr r1, _start
- add r0, r0, r1
- add lr, r0, r9
+ add lr, r0, r1
+ add lr, lr, r9
/* setup parameters for board_init_r */
mov r0, r5 /* gd_t */
mov r1, r7 /* dest_addr */
@@ -315,112 +311,6 @@ _rel_dyn_end_ofs:
_dynsym_start_ofs:
.word __dynsym_start - _start
-#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,#0xd3
- msr cpsr,r0
-
-#ifdef CONFIG_OMAP2420H4
- /* Copy vectors to mask ROM indirect addr */
- adr r0, _start /* r0 <- current position of code */
- add r0, r0, #4 /* skip reset vector */
- mov r2, #64 /* r2 <- size to copy */
- add r2, r0, r2 /* r2 <- source end address */
- mov r1, #SRAM_OFFSET0 /* build vect addr */
- mov r3, #SRAM_OFFSET1
- add r1, r1, r3
- mov r3, #SRAM_OFFSET2
- add r1, r1, r3
-next:
- 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] */
- bne next /* loop until equal */
- bl cpy_clk_code /* put dpll adjust code behind vectors */
-#endif
- /* the mask ROM code should have PLL and others stable */
-#ifndef CONFIG_SKIP_LOWLEVEL_INIT
- bl cpu_init_crit
-#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 */
-#ifndef CONFIG_PRELOADER
- beq stack_setup
-#endif /* CONFIG_PRELOADER */
-
- 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
-#endif /* CONFIG_SKIP_RELOCATE_UBOOT */
-
- /* Set up the stack */
-stack_setup:
- ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
-#ifdef CONFIG_PRELOADER
- sub sp, r0, #128 /* leave 32 words for abort-stack */
-#else
- 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 */
-#endif /* CONFIG_PRELOADER */
- bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
-
-clear_bss:
- adr r2, _start
- ldr r0, _bss_start_ofs /* find start of bss segment */
- add r0, r0, r2
- ldr r1, _bss_end_ofs /* stop here */
- add r1, r1, r2
- mov r2, #0x00000000 /* clear */
-
-#ifndef CONFIG_PRELOADER
-clbss_l:str r2, [r0] /* clear loop... */
- add r0, r0, #4
- cmp r0, r1
- bne clbss_l
-#endif
-
- ldr r0, _start_armboot_ofs
- adr r1, _start
- add r0, r0, r1
- ldr pc, r0
-
-_start_armboot_ofs:
-#ifdef CONFIG_NAND_SPL
- .word nand_boot - _start
-#else
-#ifdef CONFIG_ONENAND_IPL
- .word start_oneboot - _start
-#else
- .word start_armboot - _start
-#endif /* CONFIG_ONENAND_IPL */
-#endif /* CONFIG_NAND_SPL */
-
-#endif /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
-
/*
*************************************************************************
*
@@ -505,13 +395,7 @@ cpu_init_crit:
sub sp, sp, #S_FRAME_SIZE @ carve out a frame on current user stack
stmia sp, {r0 - r12} @ Save user registers (now in svc mode) r0-r12
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
ldr r2, IRQ_STACK_START_IN @ set base 2 words into abort stack
-#else
- adr r2, _start
- sub r2, r2, #(CONFIG_SYS_MALLOC_LEN)
- sub r2, r2, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ set base 2 words into abort stack
-#endif
ldmia r2, {r2 - r3} @ get values for "aborted" pc and cpsr (into parm regs)
add r0, sp, #S_FRAME_SIZE @ grab pointer to old stack
@@ -542,13 +426,7 @@ cpu_init_crit:
.endm
.macro get_bad_stack
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
ldr r13, IRQ_STACK_START_IN @ setup our mode stack (enter in banked mode)
-#else
- adr r13, _start @ setup our mode stack (enter in banked mode)
- sub r13, r13, #(CONFIG_STACKSIZE+CONFIG_SYS_MALLOC_LEN) @ move past malloc pool
- sub r13, r13, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ move to reserved a couple spots for abort stack
-#endif
str lr, [r13] @ save caller lr in position 0 of saved stack
mrs lr, spsr @ get the spsr
@@ -564,13 +442,7 @@ cpu_init_crit:
.macro get_bad_stack_swi
sub r13, r13, #4 @ space on current stack for scratch reg.
str r0, [r13] @ save R0's value.
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
ldr r0, IRQ_STACK_START_IN @ get data regions start
-#else
- ldr r0, _armboot_start @ get data regions start
- sub r0, r0, #(CONFIG_SYS_MALLOC_LEN) @ move past malloc pool
- sub r0, r0, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ move past gbl and a couple spots for abort stack
-#endif
str lr, [r0] @ save caller lr in position 0 of saved stack
mrs r0, spsr @ get the spsr
str lr, [r0, #4] @ save spsr in position 1 of saved stack
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 02:13:29 +0000