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arm: armv8: Make save_boot_params simpler

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The idiom used in save_boot_params is common for armv7.
In armv8 is much easier to do the same thing with adr/adrp.

So let's simplify the code a bit.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Ilias Apalodimas 2025-10-16 16:27:43 +03:00 committed by Tom Rini
parent cf262e1608
commit 104a0de784
1 changed files with 7 additions and 12 deletions
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19
arch/arm/cpu/armv8/start.S
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@ -387,23 +387,18 @@ ENDPROC(c_runtime_cpu_setup)
WEAK(save_boot_params)
#if (IS_ENABLED(CONFIG_BLOBLIST))
/* Calculate the PC-relative address of saved_args */
adr x9, saved_args_offset
ldr w10, saved_args_offset
add x9, x9, w10, sxtw
stp x0, x1, [x9]
stp x2, x3, [x9, #16]
adrp x9, saved_args
add x9, x9, :lo12:saved_args
stp x0, x1, [x9]
stp x2, x3, [x9, #16]
#endif
b save_boot_params_ret /* back to my caller */
ENDPROC(save_boot_params)
#if (IS_ENABLED(CONFIG_BLOBLIST))
saved_args_offset:
.long saved_args - . /* offset from current code to save_args */
.section .data
.align 2
.global saved_args
.section .data
.align 2
.global saved_args
saved_args:
.rept 4
.dword 0