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143 lines
2.8 KiB
143 lines
2.8 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* arch/sh/boot/compressed/misc.c |
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* |
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* This is a collection of several routines from gzip-1.0.3 |
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* adapted for Linux. |
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* |
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* malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994 |
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* |
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* Adapted for SH by Stuart Menefy, Aug 1999 |
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* |
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* Modified to use standard LinuxSH BIOS by Greg Banks 7Jul2000 |
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*/ |
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#include <linux/uaccess.h> |
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#include <asm/addrspace.h> |
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#include <asm/page.h> |
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/* |
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* gzip declarations |
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*/ |
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#define STATIC static |
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#undef memset |
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#undef memcpy |
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#define memzero(s, n) memset ((s), 0, (n)) |
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/* cache.c */ |
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#define CACHE_ENABLE 0 |
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#define CACHE_DISABLE 1 |
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int cache_control(unsigned int command); |
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extern char input_data[]; |
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extern int input_len; |
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static unsigned char *output; |
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static void error(char *m); |
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int puts(const char *); |
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extern int _text; /* Defined in vmlinux.lds.S */ |
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extern int _end; |
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static unsigned long free_mem_ptr; |
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static unsigned long free_mem_end_ptr; |
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#ifdef CONFIG_HAVE_KERNEL_BZIP2 |
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#define HEAP_SIZE 0x400000 |
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#else |
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#define HEAP_SIZE 0x10000 |
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#endif |
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#ifdef CONFIG_KERNEL_GZIP |
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#include "../../../../lib/decompress_inflate.c" |
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#endif |
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#ifdef CONFIG_KERNEL_BZIP2 |
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#include "../../../../lib/decompress_bunzip2.c" |
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#endif |
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#ifdef CONFIG_KERNEL_LZMA |
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#include "../../../../lib/decompress_unlzma.c" |
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#endif |
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#ifdef CONFIG_KERNEL_XZ |
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#include "../../../../lib/decompress_unxz.c" |
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#endif |
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#ifdef CONFIG_KERNEL_LZO |
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#include "../../../../lib/decompress_unlzo.c" |
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#endif |
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int puts(const char *s) |
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{ |
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/* This should be updated to use the sh-sci routines */ |
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return 0; |
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} |
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void* memset(void* s, int c, size_t n) |
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{ |
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int i; |
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char *ss = (char*)s; |
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for (i=0;i<n;i++) ss[i] = c; |
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return s; |
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} |
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void* memcpy(void* __dest, __const void* __src, |
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size_t __n) |
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{ |
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int i; |
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char *d = (char *)__dest, *s = (char *)__src; |
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for (i=0;i<__n;i++) d[i] = s[i]; |
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return __dest; |
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} |
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static void error(char *x) |
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{ |
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puts("\n\n"); |
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puts(x); |
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puts("\n\n -- System halted"); |
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while(1); /* Halt */ |
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} |
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const unsigned long __stack_chk_guard = 0x000a0dff; |
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void __stack_chk_fail(void) |
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{ |
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error("stack-protector: Kernel stack is corrupted\n"); |
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} |
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/* Needed because vmlinux.lds.h references this */ |
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void ftrace_stub(void) |
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{ |
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} |
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#define stackalign 4 |
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#define STACK_SIZE (4096) |
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long __attribute__ ((aligned(stackalign))) user_stack[STACK_SIZE]; |
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long *stack_start = &user_stack[STACK_SIZE]; |
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void decompress_kernel(void) |
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{ |
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unsigned long output_addr; |
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output_addr = __pa((unsigned long)&_text+PAGE_SIZE); |
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#if defined(CONFIG_29BIT) |
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output_addr |= P2SEG; |
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#endif |
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output = (unsigned char *)output_addr; |
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free_mem_ptr = (unsigned long)&_end; |
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free_mem_end_ptr = free_mem_ptr + HEAP_SIZE; |
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puts("Uncompressing Linux... "); |
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cache_control(CACHE_ENABLE); |
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__decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error); |
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cache_control(CACHE_DISABLE); |
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puts("Ok, booting the kernel.\n"); |
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}
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