diff options
Diffstat (limited to 'arch/arm/cpu/arm1136/start.S')
| -rw-r--r-- | arch/arm/cpu/arm1136/start.S | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S index d70ca1d51..9f172b625 100644 --- a/arch/arm/cpu/arm1136/start.S +++ b/arch/arm/cpu/arm1136/start.S @@ -132,14 +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 */ @@ -318,112 +315,6 @@ _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, #GENERATED_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) */ - /* ************************************************************************* * @@ -508,13 +399,7 @@ 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, #(GENERATED_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 @@ -545,13 +430,7 @@ 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, #(GENERATED_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 @@ -567,13 +446,7 @@ 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, #(GENERATED_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 |