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| author | Andreas Bießmann <andreas.devel@googlemail.com> | 2010-12-01 00:58:34 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-12-09 11:01:15 +0100 |
| commit | a1a47d3c57e3bc3c49bc1eca94c00eba4880d2c3 (patch) | |
| tree | 0f17f75076e1a8c6ee7d868c3924722a7c803f15 /arch/arm/cpu/arm926ejs/start.S | |
| parent | a78fb68f718383ba7eea410340be66e94cd3540d (diff) | |
| download | u-boot-imx-a1a47d3c57e3bc3c49bc1eca94c00eba4880d2c3.zip u-boot-imx-a1a47d3c57e3bc3c49bc1eca94c00eba4880d2c3.tar.gz u-boot-imx-a1a47d3c57e3bc3c49bc1eca94c00eba4880d2c3.tar.bz2 | |
arm: relocate_code(): do not set register useless
In case we are still at relocation target address before relocation we
do not need to load the registers needed for relocation. We should
instead skip the whole relocation part and jump over to clear_bss
immediately.
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'arch/arm/cpu/arm926ejs/start.S')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/start.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S index d3f5630..32001e8 100644 --- a/arch/arm/cpu/arm926ejs/start.S +++ b/arch/arm/cpu/arm926ejs/start.S @@ -198,12 +198,12 @@ stack_setup: mov sp, r4 adr r0, _start + cmp r0, r6 + beq clear_bss /* skip relocation */ mov r1, r6 /* r1 <- scratch for copy loop */ ldr r2, _TEXT_BASE ldr r3, _bss_start_ofs add r2, r0, r3 /* r2 <- source end address */ - cmp r0, r6 - beq clear_bss copy_loop: ldmia r0!, {r9-r10} /* copy from source address [r0] */ |