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// SPDX-License-Identifier: GPL-2.0
/*
* Definitions and wrapper functions for kernel decompressor
*
* Copyright IBM Corp. 2010
*
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <asm/boot_data.h>
#include <asm/page.h>
#include "decompressor.h"
#include "boot.h"
/*
* gzip declarations
*/
#define STATIC static
#undef memset
#undef memcpy
#undef memmove
#define memmove memmove
#define memzero(s, n) memset((s), 0, (n))
#if defined(CONFIG_KERNEL_BZIP2)
#define BOOT_HEAP_SIZE 0x400000
#elif defined(CONFIG_KERNEL_ZSTD)
#define BOOT_HEAP_SIZE 0x30000
#else
#define BOOT_HEAP_SIZE 0x10000
#endif
static unsigned long free_mem_ptr = (unsigned long) _end;
static unsigned long free_mem_end_ptr = (unsigned long) _end + BOOT_HEAP_SIZE;
#ifdef CONFIG_KERNEL_GZIP
#include "../../../../lib/decompress_inflate.c"
#endif
#ifdef CONFIG_KERNEL_BZIP2
#include "../../../../lib/decompress_bunzip2.c"
#endif
#ifdef CONFIG_KERNEL_LZ4
#include "../../../../lib/decompress_unlz4.c"
#endif
#ifdef CONFIG_KERNEL_LZMA
#include "../../../../lib/decompress_unlzma.c"
#endif
#ifdef CONFIG_KERNEL_LZO
#include "../../../../lib/decompress_unlzo.c"
#endif
#ifdef CONFIG_KERNEL_XZ
#include "../../../../lib/decompress_unxz.c"
#endif
#ifdef CONFIG_KERNEL_ZSTD
#include "../../../../lib/decompress_unzstd.c"
#endif
static void decompress_error(char *m)
{
if (bootdebug)
boot_rb_dump();
boot_panic("Decompression error: %s\n", m);
}
unsigned long mem_safe_offset(void)
{
return ALIGN(free_mem_end_ptr, PAGE_SIZE);
}
void deploy_kernel(void *output)
{
__decompress(_compressed_start, _compressed_end - _compressed_start,
NULL, NULL, output, vmlinux.image_size, NULL, decompress_error);
}
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