LoongArch: Add preparatory infrastructure for kexec_file

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Add some preparatory infrastructure:
- Add command line processing.
- Add support for loading other segments.
- Other minor modifications.

This initrd will be passed to the second kernel via the command line
'initrd=start,size'.

The 'kexec_file' command line parameter indicates that the kernel is
loaded via kexec_file.

Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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This commit is contained in:

Youling Tang 2025-10-02 22:39:07 +08:00 • committed by Huacai Chen

parent 30ade4fef7

commit d162feec6b

5 changed files with 166 additions and 13 deletions

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9

arch/loongarch/Kconfig

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10

arch/loongarch/include/asm/kexec.h

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1

arch/loongarch/kernel/Makefile

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37

arch/loongarch/kernel/machine_kexec.c

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122

arch/loongarch/kernel/machine_kexec_file.c

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