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edd4a86673
The final kernel image is created by linking decompressor object files with a startup archive. The startup archive file however does not contain only optional code and data which can be discarded if not referenced. It also contains mandatory object data like head.o which must never be discarded, even if not referenced. Move the decompresser code and linker script to the boot directory and get rid of the startup archive so everything is kept during link time. Acked-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
38 lines
1 KiB
C
38 lines
1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BOOT_COMPRESSED_DECOMPRESSOR_H
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#define BOOT_COMPRESSED_DECOMPRESSOR_H
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#include <linux/stddef.h>
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#ifdef CONFIG_KERNEL_UNCOMPRESSED
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static inline void *decompress_kernel(void) { return NULL; }
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#else
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void *decompress_kernel(void);
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#endif
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unsigned long mem_safe_offset(void);
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void error(char *m);
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struct vmlinux_info {
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unsigned long default_lma;
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void (*entry)(void);
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unsigned long image_size; /* does not include .bss */
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unsigned long bss_size; /* uncompressed image .bss size */
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unsigned long bootdata_off;
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unsigned long bootdata_size;
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unsigned long bootdata_preserved_off;
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unsigned long bootdata_preserved_size;
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unsigned long dynsym_start;
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unsigned long rela_dyn_start;
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unsigned long rela_dyn_end;
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unsigned long amode31_size;
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};
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/* Symbols defined by linker scripts */
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extern char _end[];
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extern unsigned char _compressed_start[];
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extern unsigned char _compressed_end[];
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extern char _vmlinux_info[];
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#define vmlinux (*(struct vmlinux_info *)_vmlinux_info)
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#endif /* BOOT_COMPRESSED_DECOMPRESSOR_H */
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