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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | // SPDX-License-Identifier: GPL-2.0 /* * arch/sh/boot/compressed/misc.c * * This is a collection of several routines from gzip-1.0.3 * adapted for Linux. * * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994 * * Adapted for SH by Stuart Menefy, Aug 1999 * * Modified to use standard LinuxSH BIOS by Greg Banks 7Jul2000 */ #include <linux/uaccess.h> #include <asm/addrspace.h> #include <asm/page.h> /* * gzip declarations */ #define STATIC static #undef memset #undef memcpy #define memzero(s, n) memset ((s), 0, (n)) /* cache.c */ #define CACHE_ENABLE 0 #define CACHE_DISABLE 1 int cache_control(unsigned int command); extern char input_data[]; extern int input_len; static unsigned char *output; static void error(char *m); int puts(const char *); extern int _text; /* Defined in vmlinux.lds.S */ extern int _end; static unsigned long free_mem_ptr; static unsigned long free_mem_end_ptr; #ifdef CONFIG_HAVE_KERNEL_BZIP2 #define HEAP_SIZE 0x400000 #else #define HEAP_SIZE 0x10000 #endif #ifdef CONFIG_KERNEL_GZIP #include "../../../../lib/decompress_inflate.c" #endif #ifdef CONFIG_KERNEL_BZIP2 #include "../../../../lib/decompress_bunzip2.c" #endif #ifdef CONFIG_KERNEL_LZMA #include "../../../../lib/decompress_unlzma.c" #endif #ifdef CONFIG_KERNEL_XZ #include "../../../../lib/decompress_unxz.c" #endif #ifdef CONFIG_KERNEL_LZO #include "../../../../lib/decompress_unlzo.c" #endif int puts(const char *s) { /* This should be updated to use the sh-sci routines */ return 0; } void* memset(void* s, int c, size_t n) { int i; char *ss = (char*)s; for (i=0;i<n;i++) ss[i] = c; return s; } void* memcpy(void* __dest, __const void* __src, size_t __n) { int i; char *d = (char *)__dest, *s = (char *)__src; for (i=0;i<__n;i++) d[i] = s[i]; return __dest; } static void error(char *x) { puts("\n\n"); puts(x); puts("\n\n -- System halted"); while(1); /* Halt */ } const unsigned long __stack_chk_guard = 0x000a0dff; void __stack_chk_fail(void) { error("stack-protector: Kernel stack is corrupted\n"); } /* Needed because vmlinux.lds.h references this */ void ftrace_stub(void) { } void arch_ftrace_ops_list_func(void) { } #define stackalign 4 #define STACK_SIZE (4096) long __attribute__ ((aligned(stackalign))) user_stack[STACK_SIZE]; long *stack_start = &user_stack[STACK_SIZE]; void decompress_kernel(void) { unsigned long output_addr; output_addr = __pa((unsigned long)&_text+PAGE_SIZE); #if defined(CONFIG_29BIT) output_addr |= P2SEG; #endif output = (unsigned char *)output_addr; free_mem_ptr = (unsigned long)&_end; free_mem_end_ptr = free_mem_ptr + HEAP_SIZE; puts("Uncompressing Linux... "); cache_control(CACHE_ENABLE); __decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error); cache_control(CACHE_DISABLE); puts("Ok, booting the kernel.\n"); } |