LoongArch: Fix entry point in kernel image header

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Currently kernel entry in head.S is in DMW address range, firmware is
instructed to jump to this address after loading the kernel image.

However kernel should not make any assumption on firmware's DMW
setting, thus the entry point should be a physical address falls into
direct translation region.

Fix by converting entry address to physical and amend entry calculation
logic in libstub accordingly.

BTW, use ABSOLUTE() to calculate variables to make Clang/LLVM happy.

Cc: stable@vger.kernel.org
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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This commit is contained in:

Jiaxun Yang 2024-06-03 15:45:53 +08:00 • committed by Huacai Chen

parent 3de9c42d02

commit beb2800074

3 changed files with 8 additions and 6 deletions

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2

arch/loongarch/kernel/head.S

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10

arch/loongarch/kernel/vmlinux.lds.S

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2

drivers/firmware/efi/libstub/loongarch.c

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