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Nokia RX-51: Simplify copy kernel code

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Expression (r + (r0 - r1)) produce same result as (r - (r1 - r0)). So it
does not matter which one is called. Always call the first option and
remove second one.

Signed-off-by: Pali Rohár <pali@kernel.org>
This commit is contained in:
Pali Rohár 2022-08-11 22:27:23 +02:00 committed by Tom Rini
parent c5be5f6f54
commit 04bd87c24c
1 changed files with 2 additions and 5 deletions
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7
board/nokia/rx51/lowlevel_init.S
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@ -55,16 +55,13 @@ save_boot_params:
copy_kernel_start: copy_kernel_start:
adr r0, relocaddr /* r0 - address of section relocaddr */ adr r0, relocaddr /* r0 - address of section relocaddr */
ldr r1, relocaddr /* r1 - address of relocaddr after relocation */ ldr r1, relocaddr /* r1 - address of relocaddr after relocation */
cmp r0, r1
/* r4 - calculated offset */ /* r4 - calculated offset */
subhi r4, r0, r1 sub r4, r0, r1
sublo r4, r1, r0
/* r0 - start of kernel before */ /* r0 - start of kernel before */
ldr r0, startaddr ldr r0, startaddr
addhi r0, r0, r4 add r0, r0, r4
sublo r0, r0, r4
ldr r1, kernoffs ldr r1, kernoffs
add r0, r0, r1 add r0, r0, r1