| 1 | |
| 2 | |
| 3 | * Definitions and wrapper functions for kernel decompressor
|
| 4 | *
|
| 5 | * Copyright IBM Corp. 2010
|
| 6 | *
|
| 7 | * Author(s): Martin Schwidefsky <[email protected]>
|
| 8 |
|
| 9 |
|
| 10 | #include <linux/kernel.h>
|
| 11 | #include <linux/string.h>
|
| 12 | #include <asm/boot_data.h>
|
| 13 | #include <asm/page.h>
|
| 14 | #include "decompressor.h"
|
| 15 | #include "boot.h"
|
| 16 |
|
| 17 | |
| 18 | * gzip declarations
|
| 19 |
|
| 20 | #define STATIC static
|
| 21 |
|
| 22 | #undef memset
|
| 23 | #undef memcpy
|
| 24 | #undef memmove
|
| 25 | #define memmove memmove
|
| 26 | #define memzero(s, n) memset((s), 0, (n))
|
| 27 |
|
| 28 | #if defined(CONFIG_KERNEL_BZIP2)
|
| 29 | #define BOOT_HEAP_SIZE 0x400000
|
| 30 | #elif defined(CONFIG_KERNEL_ZSTD)
|
| 31 | #define BOOT_HEAP_SIZE 0x30000
|
| 32 | #else
|
| 33 | #define BOOT_HEAP_SIZE 0x10000
|
| 34 | #endif
|
| 35 |
|
| 36 | static unsigned long free_mem_ptr = (unsigned long) _end;
|
| 37 | static unsigned long free_mem_end_ptr = (unsigned long) _end + BOOT_HEAP_SIZE;
|
| 38 |
|
| 39 | #ifdef CONFIG_KERNEL_GZIP
|
| 40 | #include "../../../../lib/decompress_inflate.c"
|
| 41 | #endif
|
| 42 |
|
| 43 | #ifdef CONFIG_KERNEL_BZIP2
|
| 44 | #include "../../../../lib/decompress_bunzip2.c"
|
| 45 | #endif
|
| 46 |
|
| 47 | #ifdef CONFIG_KERNEL_LZ4
|
| 48 | #include "../../../../lib/decompress_unlz4.c"
|
| 49 | #endif
|
| 50 |
|
| 51 | #ifdef CONFIG_KERNEL_LZMA
|
| 52 | #include "../../../../lib/decompress_unlzma.c"
|
| 53 | #endif
|
| 54 |
|
| 55 | #ifdef CONFIG_KERNEL_LZO
|
| 56 | #include "../../../../lib/decompress_unlzo.c"
|
| 57 | #endif
|
| 58 |
|
| 59 | #ifdef CONFIG_KERNEL_XZ
|
| 60 | #include "../../../../lib/decompress_unxz.c"
|
| 61 | #endif
|
| 62 |
|
| 63 | #ifdef CONFIG_KERNEL_ZSTD
|
| 64 | #include "../../../../lib/decompress_unzstd.c"
|
| 65 | #endif
|
| 66 |
|
| 67 | static void decompress_error(char *m)
|
| 68 | {
|
| 69 | if (bootdebug)
|
| 70 | boot_rb_dump();
|
| 71 | boot_panic("Decompression error: %s\n", m);
|
| 72 | }
|
| 73 |
|
| 74 | unsigned long mem_safe_offset(void)
|
| 75 | {
|
| 76 | return ALIGN(free_mem_end_ptr, PAGE_SIZE);
|
| 77 | }
|
| 78 |
|
| 79 | void deploy_kernel(void *output)
|
| 80 | {
|
| 81 | __decompress(_compressed_start, _compressed_end - _compressed_start,
|
| 82 | NULL, NULL, output, vmlinux.image_size, NULL, decompress_error);
|
| 83 | }
|