2 * arch/sh/boot/compressed/misc.c
4 * This is a collection of several routines from gzip-1.0.3
7 * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
9 * Adapted for SH by Stuart Menefy, Aug 1999
11 * Modified to use standard LinuxSH BIOS by Greg Banks 7Jul2000
14 #include <asm/uaccess.h>
15 #include <asm/addrspace.h>
26 #define memzero(s, n) memset ((s), 0, (n))
29 #define CACHE_ENABLE 0
30 #define CACHE_DISABLE 1
31 int cache_control(unsigned int command);
33 extern char input_data[];
35 static unsigned char *output;
37 static void error(char *m);
39 int puts(const char *);
41 extern int _text; /* Defined in vmlinux.lds.S */
43 static unsigned long free_mem_ptr;
44 static unsigned long free_mem_end_ptr;
46 #ifdef CONFIG_HAVE_KERNEL_BZIP2
47 #define HEAP_SIZE 0x400000
49 #define HEAP_SIZE 0x10000
52 #ifdef CONFIG_KERNEL_GZIP
53 #include "../../../../lib/decompress_inflate.c"
56 #ifdef CONFIG_KERNEL_BZIP2
57 #include "../../../../lib/decompress_bunzip2.c"
60 #ifdef CONFIG_KERNEL_LZMA
61 #include "../../../../lib/decompress_unlzma.c"
64 #ifdef CONFIG_KERNEL_XZ
65 #include "../../../../lib/decompress_unxz.c"
68 #ifdef CONFIG_KERNEL_LZO
69 #include "../../../../lib/decompress_unlzo.c"
72 int puts(const char *s)
74 /* This should be updated to use the sh-sci routines */
78 void* memset(void* s, int c, size_t n)
83 for (i=0;i<n;i++) ss[i] = c;
87 void* memcpy(void* __dest, __const void* __src,
91 char *d = (char *)__dest, *s = (char *)__src;
93 for (i=0;i<__n;i++) d[i] = s[i];
97 static void error(char *x)
101 puts("\n\n -- System halted");
106 #ifdef CONFIG_SUPERH64
112 #define STACK_SIZE (4096)
113 long __attribute__ ((aligned(stackalign))) user_stack[STACK_SIZE];
114 long *stack_start = &user_stack[STACK_SIZE];
116 void decompress_kernel(void)
118 unsigned long output_addr;
120 #ifdef CONFIG_SUPERH64
121 output_addr = (CONFIG_MEMORY_START + 0x2000);
123 output_addr = __pa((unsigned long)&_text+PAGE_SIZE);
124 #if defined(CONFIG_29BIT)
125 output_addr |= P2SEG;
129 output = (unsigned char *)output_addr;
130 free_mem_ptr = (unsigned long)&_end;
131 free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
133 puts("Uncompressing Linux... ");
134 cache_control(CACHE_ENABLE);
135 __decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error);
136 cache_control(CACHE_DISABLE);
137 puts("Ok, booting the kernel.\n");