92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
/*
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* arch/m32r/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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* 2003-02-12: Support M32R by Takeo Takahashi
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*/
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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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static void error(char *m);
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#include "m32r_sio.c"
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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_KERNEL_BZIP2
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void *memset(void *s, int c, size_t n)
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{
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char *ss = s;
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while (n--)
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*ss++ = c;
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return s;
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}
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#endif
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#ifdef CONFIG_KERNEL_GZIP
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void *memcpy(void *dest, const void *src, size_t n)
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{
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char *d = dest;
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const char *s = src;
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while (n--)
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*d++ = *s++;
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return dest;
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}
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#define BOOT_HEAP_SIZE 0x10000
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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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#define BOOT_HEAP_SIZE 0x400000
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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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#define BOOT_HEAP_SIZE 0x10000
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#include "../../../../lib/decompress_unlzma.c"
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#endif
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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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void
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decompress_kernel(int mmu_on, unsigned char *zimage_data,
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unsigned int zimage_len, unsigned long heap)
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{
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unsigned char *input_data = zimage_data;
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int input_len = zimage_len;
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unsigned char *output_data;
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output_data = (unsigned char *)CONFIG_MEMORY_START + 0x2000
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+ (mmu_on ? 0x80000000 : 0);
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free_mem_ptr = heap;
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free_mem_end_ptr = free_mem_ptr + BOOT_HEAP_SIZE;
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puts("\nDecompressing Linux... ");
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decompress(input_data, input_len, NULL, NULL, output_data, NULL, error);
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puts("done.\nBooting the kernel.\n");
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}
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