| /* |
| * 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 */ |
| } |
| |
| #ifdef CONFIG_SUPERH64 |
| #define stackalign 8 |
| #else |
| #define stackalign 4 |
| #endif |
| |
| #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; |
| |
| #ifdef CONFIG_SUPERH64 |
| output_addr = (CONFIG_MEMORY_START + 0x2000); |
| #else |
| output_addr = __pa((unsigned long)&_text+PAGE_SIZE); |
| #if defined(CONFIG_29BIT) |
| output_addr |= P2SEG; |
| #endif |
| #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"); |
| } |