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author | Wolfgang Denk <wd@denx.de> | 2010-10-28 20:35:36 +0200 |
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committer | Wolfgang Denk <wd@denx.de> | 2010-10-29 21:39:59 +0200 |
commit | a9aa3926295df759306258e5e24cace414f53b67 (patch) | |
tree | b63739471ef3aaebad27fd610f8394fee35120b5 /arch/arm/cpu/s3c44b0/start.S | |
parent | 2e5167ccad93ca9cfa6a2acfab5e4785418e477e (diff) | |
download | u-boot-imx-a9aa3926295df759306258e5e24cace414f53b67.zip u-boot-imx-a9aa3926295df759306258e5e24cace414f53b67.tar.gz u-boot-imx-a9aa3926295df759306258e5e24cace414f53b67.tar.bz2 |
Drop support for CONFIG_SYS_ARM_WITHOUT_RELOC
When this define was introduced, the idea was to provide a soft
migration path for ARM boards to get adapted to the new relocation
support. However, other recent changes led to a different
implementation (ELF relocation), where this no longer works. By now
CONFIG_SYS_ARM_WITHOUT_RELOC does not only not help any more, but it
actually hurts because it obfuscates the actual code by sprinkling it
with lots of dead and non-working debris.
So let's make a clean cut and drop CONFIG_SYS_ARM_WITHOUT_RELOC.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Tested-by: Heiko Schocher <hs@denx.de>
Tested-by: Reinhard Meyer <u-boot@emk-elektronik.de>
Diffstat (limited to 'arch/arm/cpu/s3c44b0/start.S')
-rw-r--r-- | arch/arm/cpu/s3c44b0/start.S | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/arch/arm/cpu/s3c44b0/start.S b/arch/arm/cpu/s3c44b0/start.S index c58da98..ca95dea 100644 --- a/arch/arm/cpu/s3c44b0/start.S +++ b/arch/arm/cpu/s3c44b0/start.S @@ -66,12 +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. */ @@ -95,7 +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: @@ -265,84 +258,6 @@ 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, #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 */ - 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) */ - /* ************************************************************************* * |