diff options
| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2020-12-30 11:47:22 +0800 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-01-04 11:16:03 +0100 |
| commit | 2ee1503e546f15ea8dbcdbaabf20c80175db46fe (patch) | |
| tree | 83e3fbf8546d43f20eba327f6f9d4e68caefb09c /arch/mips | |
| parent | cf8194e46c1edd2368d19b71476bb77dc7bcb4c0 (diff) | |
MIPS: zboot: head.S clean up
.cprestore is removed as we don't expect Position Independent
zboot ELF.
.noreorder is also removed and rest instructions are massaged
to improve readability.
t9 register is used for indirect jump as MIPS ABI requirement.
start label is removed as it already defined in LEAF.
Reported-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Huacai Chen <chenhuacai@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/boot/compressed/head.S | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/arch/mips/boot/compressed/head.S b/arch/mips/boot/compressed/head.S index 409cb483a9ff..070b2fbabae4 100644 --- a/arch/mips/boot/compressed/head.S +++ b/arch/mips/boot/compressed/head.S @@ -15,10 +15,7 @@ #include <asm/asm.h> #include <asm/regdef.h> - .set noreorder - .cprestore LEAF(start) -start: /* Save boot rom start args */ move s0, a0 move s1, a1 @@ -35,21 +32,20 @@ start: PTR_LA a0, (.heap) /* heap address */ PTR_LA sp, (.stack + 8192) /* stack address */ - PTR_LA ra, 2f - PTR_LA k0, decompress_kernel - jr k0 - nop + PTR_LA t9, decompress_kernel + jalr t9 + 2: move a0, s0 move a1, s1 move a2, s2 move a3, s3 - PTR_LI k0, KERNEL_ENTRY - jr k0 - nop + PTR_LI t9, KERNEL_ENTRY + jalr t9 + 3: b 3b - nop + END(start) .comm .heap,BOOT_HEAP_SIZE,4 |