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m32r: bzip2/lzma kernel compression support
- Support bzip2 and lzma kernel compression for m32r. - Clean up arch/m32r/boot/compressed/misc.c. Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
This commit is contained in:
Hirokazu Takata
parent
e968b8d404
commit
337214e8c6
3 changed files with 42 additions and 120 deletions
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@ -11,6 +11,9 @@ config M32R
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select HAVE_IDE
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select HAVE_OPROFILE
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select INIT_ALL_POSSIBLE
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select HAVE_KERNEL_GZIP
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select HAVE_KERNEL_BZIP2
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select HAVE_KERNEL_LZMA
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config SBUS
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bool
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@ -4,8 +4,8 @@
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# create a compressed vmlinux image from the original vmlinux
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#
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targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o \
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piggy.o vmlinux.lds
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targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
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vmlinux.bin.lzma head.o misc.o piggy.o vmlinux.lds
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OBJECTS = $(obj)/head.o $(obj)/misc.o
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@ -27,6 +27,12 @@ $(obj)/vmlinux.bin: vmlinux FORCE
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$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
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$(call if_changed,gzip)
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$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
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$(call if_changed,bzip2)
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$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
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$(call if_changed,lzma)
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CFLAGS_misc.o += -fpic
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ifdef CONFIG_MMU
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@ -37,5 +43,9 @@ endif
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OBJCOPYFLAGS += -R .empty_zero_page
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$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
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suffix_$(CONFIG_KERNEL_GZIP) = gz
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suffix_$(CONFIG_KERNEL_BZIP2) = bz2
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suffix_$(CONFIG_KERNEL_LZMA) = lzma
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$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix_y) FORCE
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$(call if_changed,ld)
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@ -9,140 +9,49 @@
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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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* This is based on arch/sh/boot/compressed/misc.c.
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*/
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#include <linux/string.h>
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/*
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* gzip declarations
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*/
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#define OF(args) args
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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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typedef unsigned char uch;
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typedef unsigned short ush;
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typedef unsigned long ulg;
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#define WSIZE 0x8000 /* Window size must be at least 32k, */
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/* and a power of two */
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static uch *inbuf; /* input buffer */
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static uch window[WSIZE]; /* Sliding window buffer */
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static unsigned insize = 0; /* valid bytes in inbuf */
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static unsigned inptr = 0; /* index of next byte to be processed in inbuf */
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static unsigned outcnt = 0; /* bytes in output buffer */
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/* gzip flag byte */
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#define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */
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#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
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#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
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#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
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#define COMMENT 0x10 /* bit 4 set: file comment present */
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#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
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#define RESERVED 0xC0 /* bit 6,7: reserved */
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#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
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/* Diagnostic functions */
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#ifdef DEBUG
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# define Assert(cond,msg) {if(!(cond)) error(msg);}
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# define Trace(x) fprintf x
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# define Tracev(x) {if (verbose) fprintf x ;}
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# define Tracevv(x) {if (verbose>1) fprintf x ;}
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# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
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# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
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#else
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# define Assert(cond,msg)
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# define Trace(x)
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# define Tracev(x)
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# define Tracevv(x)
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# define Tracec(c,x)
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# define Tracecv(c,x)
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#endif
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static int fill_inbuf(void);
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static void flush_window(void);
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static void error(char *m);
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static unsigned char *input_data;
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static int input_len;
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static long bytes_out = 0;
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static uch *output_data;
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static unsigned long output_ptr = 0;
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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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#define HEAP_SIZE 0x10000
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#include "../../../../lib/inflate.c"
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void* memset(void* s, int c, size_t n)
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#ifdef CONFIG_KERNEL_BZIP2
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static 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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char *ss = s;
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for (i=0;i<n;i++) ss[i] = c;
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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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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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#ifdef CONFIG_KERNEL_GZIP
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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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for (i=0;i<__n;i++) d[i] = s[i];
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return __dest;
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}
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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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/* ===========================================================================
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* Fill the input buffer. This is called only when the buffer is empty
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* and at least one byte is really needed.
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*/
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static int fill_inbuf(void)
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{
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if (insize != 0) {
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error("ran out of input data");
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}
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inbuf = input_data;
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insize = input_len;
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inptr = 1;
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return inbuf[0];
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}
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/* ===========================================================================
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* Write the output window window[0..outcnt-1] and update crc and bytes_out.
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* (Used for the decompressed data only.)
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*/
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static void flush_window(void)
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{
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ulg c = crc; /* temporary variable */
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unsigned n;
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uch *in, *out, ch;
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in = window;
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out = &output_data[output_ptr];
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for (n = 0; n < outcnt; n++) {
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ch = *out++ = *in++;
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c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
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}
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crc = c;
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bytes_out += (ulg)outcnt;
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output_ptr += (ulg)outcnt;
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outcnt = 0;
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}
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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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@ -153,20 +62,20 @@ static void error(char *x)
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while(1); /* Halt */
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}
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/* return decompressed size */
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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 + HEAP_SIZE;
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input_data = zimage_data;
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input_len = zimage_len;
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free_mem_end_ptr = free_mem_ptr + BOOT_HEAP_SIZE;
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makecrc();
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puts("Uncompressing Linux... ");
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gunzip();
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puts("Ok, booting the kernel.\n");
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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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