diff options
Diffstat (limited to 'arch/arm/cpu/arm946es/start.S')
| -rw-r--r-- | arch/arm/cpu/arm946es/start.S | 91 |
1 files changed, 2 insertions, 89 deletions
diff --git a/arch/arm/cpu/arm946es/start.S b/arch/arm/cpu/arm946es/start.S index 077886f36..cad43ba04 100644 --- a/arch/arm/cpu/arm946es/start.S +++ b/arch/arm/cpu/arm946es/start.S @@ -30,7 +30,7 @@ * MA 02111-1307 USA */ - +#include <asm-offsets.h> #include <config.h> #include <version.h> @@ -89,12 +89,6 @@ _fiq: _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. */ @@ -118,7 +112,6 @@ 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: @@ -203,7 +196,6 @@ 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] */ @@ -228,9 +220,8 @@ fixloop: str r4, [r2] add r2, r2, #4 cmp r2, r3 - bne fixloop + blo fixloop #endif -#endif /* #ifndef CONFIG_SKIP_RELOCATE_UBOOT */ clear_bss: #ifndef CONFIG_PRELOADER @@ -273,72 +264,6 @@ _nand_boot: .word nand_boot _board_init_r: .word board_init_r #endif -#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 - - /* - * we do sys-critical inits only at reboot, - * not when booting from ram! - */ -#ifndef CONFIG_SKIP_LOWLEVEL_INIT - bl cpu_init_crit -#endif - -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 - - /* 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 */ - -clear_bss: - ldr r0, _bss_start /* find start of bss segment */ - ldr r1, _bss_end /* stop here */ - mov r2, #0x00000000 /* clear */ - -clbss_l:str r2, [r0] /* clear loop... */ - add r0, r0, #4 - cmp r0, r1 - bne clbss_l - - ldr pc, _start_armboot - -_start_armboot: - .word start_armboot -#endif /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */ - /* ************************************************************************* * @@ -424,13 +349,7 @@ cpu_init_crit: sub sp, sp, #S_FRAME_SIZE stmia sp, {r0 - r12} @ Save user registers (now in svc mode) r0-r12 -#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC) - ldr r2, _armboot_start - sub r2, r2, #(CONFIG_STACKSIZE+CONFIG_SYS_MALLOC_LEN) - sub r2, r2, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ set base 2 words into abort stack -#else ldr r2, IRQ_STACK_START_IN -#endif @ get values for "aborted" pc and cpsr (into parm regs) ldmia r2, {r2 - r3} add r0, sp, #S_FRAME_SIZE @ grab pointer to old stack @@ -462,13 +381,7 @@ cpu_init_crit: .endm .macro get_bad_stack -#if defined(CONFIG_SYS_ARM_WITHOUT_RELOC) - ldr r13, _armboot_start @ setup our mode stack - sub r13, r13, #(CONFIG_STACKSIZE+CONFIG_SYS_MALLOC_LEN) - sub r13, r13, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack -#else ldr r13, IRQ_STACK_START_IN @ setup our mode stack -#endif str lr, [r13] @ save caller lr in position 0 of saved stack mrs lr, spsr @ get the spsr |