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LoongArch: Add struct loongarch_image_header for kernel

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Define a dedicated image header structure for LoongArch architecture to
standardize kernel loading in bootloaders (primarily for kexec_file).

This header includes critical metadata, such as PE/DOS signature, kernel
entry points, kernel image size and load address offset, etc.

Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Youling Tang 2025-10-02 22:39:07 +08:00 committed by Huacai Chen
parent 5dcddd268a
commit 30ade4fef7
1 changed files with 38 additions and 0 deletions
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38
arch/loongarch/include/asm/image.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* LoongArch binary image header for EFI(PE/COFF) format.
*
* Author: Youling Tang <tangyouling@kylinos.cn>
* Copyright (C) 2025 KylinSoft Corporation.
*/
#ifndef __ASM_IMAGE_H
#define __ASM_IMAGE_H
#ifndef __ASSEMBLER__
/**
* struct loongarch_image_header
*
* @dos_sig: Optional PE format 'MZ' signature.
* @padding_1: Reserved.
* @kernel_entry: Kernel image entry pointer.
* @kernel_asize: An estimated size of the memory image size in LSB byte order.
* @text_offset: The image load offset in LSB byte order.
* @padding_2: Reserved.
* @pe_header: Optional offset to a PE format header.
**/
struct loongarch_image_header {
uint8_t dos_sig[2];
uint16_t padding_1[3];
uint64_t kernel_entry;
uint64_t kernel_asize;
uint64_t text_offset;
uint32_t padding_2[7];
uint32_t pe_header;
};
#endif /* __ASSEMBLER__ */
#endif /* __ASM_IMAGE_H */