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authorHirokazu Takata <takata@linux-m32r.org>2009-10-15 09:21:56 +0900
committerHirokazu Takata <takata@linux-m32r.org>2009-11-04 08:37:33 +0900
commit337214e8c6b0c777713b2483749f9c03102a416c (patch)
treeee60e2d0be42716812852309e984757c330286da /arch/m32r
parente968b8d404ae8ab4ef218cd145f6dcb71e65154b (diff)
downloadlinux-2.6.34-ux500-337214e8c6b0c777713b2483749f9c03102a416c.tar.gz
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>
Diffstat (limited to 'arch/m32r')
-rw-r--r--arch/m32r/Kconfig3
-rw-r--r--arch/m32r/boot/compressed/Makefile16
-rw-r--r--arch/m32r/boot/compressed/misc.c143
3 files changed, 42 insertions, 120 deletions
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index c41234f1b82..3a9319f93e8 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -11,6 +11,9 @@ config M32R
select HAVE_IDE
select HAVE_OPROFILE
select INIT_ALL_POSSIBLE
+ select HAVE_KERNEL_GZIP
+ select HAVE_KERNEL_BZIP2
+ select HAVE_KERNEL_LZMA
config SBUS
bool
diff --git a/arch/m32r/boot/compressed/Makefile b/arch/m32r/boot/compressed/Makefile
index 560484ae35e..1003880d0df 100644
--- a/arch/m32r/boot/compressed/Makefile
+++ b/arch/m32r/boot/compressed/Makefile
@@ -4,8 +4,8 @@
# create a compressed vmlinux image from the original vmlinux
#
-targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o \
- piggy.o vmlinux.lds
+targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
+ vmlinux.bin.lzma head.o misc.o piggy.o vmlinux.lds
OBJECTS = $(obj)/head.o $(obj)/misc.o
@@ -27,6 +27,12 @@ $(obj)/vmlinux.bin: vmlinux FORCE
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,gzip)
+$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,bzip2)
+
+$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,lzma)
+
CFLAGS_misc.o += -fpic
ifdef CONFIG_MMU
@@ -37,5 +43,9 @@ endif
OBJCOPYFLAGS += -R .empty_zero_page
-$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
+suffix_$(CONFIG_KERNEL_GZIP) = gz
+suffix_$(CONFIG_KERNEL_BZIP2) = bz2
+suffix_$(CONFIG_KERNEL_LZMA) = lzma
+
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix_y) FORCE
$(call if_changed,ld)
diff --git a/arch/m32r/boot/compressed/misc.c b/arch/m32r/boot/compressed/misc.c
index d394292498c..370d6088197 100644
--- a/arch/m32r/boot/compressed/misc.c
+++ b/arch/m32r/boot/compressed/misc.c
@@ -9,140 +9,49 @@
* Adapted for SH by Stuart Menefy, Aug 1999
*
* 2003-02-12: Support M32R by Takeo Takahashi
- * This is based on arch/sh/boot/compressed/misc.c.
*/
-#include <linux/string.h>
-
/*
* gzip declarations
*/
-
-#define OF(args) args
#define STATIC static
#undef memset
#undef memcpy
#define memzero(s, n) memset ((s), 0, (n))
-typedef unsigned char uch;
-typedef unsigned short ush;
-typedef unsigned long ulg;
-
-#define WSIZE 0x8000 /* Window size must be at least 32k, */
- /* and a power of two */
-
-static uch *inbuf; /* input buffer */
-static uch window[WSIZE]; /* Sliding window buffer */
-
-static unsigned insize = 0; /* valid bytes in inbuf */
-static unsigned inptr = 0; /* index of next byte to be processed in inbuf */
-static unsigned outcnt = 0; /* bytes in output buffer */
-
-/* gzip flag byte */
-#define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */
-#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
-#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
-#define COMMENT 0x10 /* bit 4 set: file comment present */
-#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
-#define RESERVED 0xC0 /* bit 6,7: reserved */
-
-#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
-
-/* Diagnostic functions */
-#ifdef DEBUG
-# define Assert(cond,msg) {if(!(cond)) error(msg);}
-# define Trace(x) fprintf x
-# define Tracev(x) {if (verbose) fprintf x ;}
-# define Tracevv(x) {if (verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-# define Assert(cond,msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,x)
-#endif
-
-static int fill_inbuf(void);
-static void flush_window(void);
static void error(char *m);
-static unsigned char *input_data;
-static int input_len;
-
-static long bytes_out = 0;
-static uch *output_data;
-static unsigned long output_ptr = 0;
-
#include "m32r_sio.c"
static unsigned long free_mem_ptr;
static unsigned long free_mem_end_ptr;
-#define HEAP_SIZE 0x10000
-
-#include "../../../../lib/inflate.c"
-
-void* memset(void* s, int c, size_t n)
+#ifdef CONFIG_KERNEL_BZIP2
+static void *memset(void *s, int c, size_t n)
{
- int i;
- char *ss = (char*)s;
+ char *ss = s;
- for (i=0;i<n;i++) ss[i] = c;
+ while (n--)
+ *ss++ = c;
return s;
}
+#endif
-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;
-}
-
-/* ===========================================================================
- * Fill the input buffer. This is called only when the buffer is empty
- * and at least one byte is really needed.
- */
-static int fill_inbuf(void)
-{
- if (insize != 0) {
- error("ran out of input data");
- }
-
- inbuf = input_data;
- insize = input_len;
- inptr = 1;
- return inbuf[0];
-}
+#ifdef CONFIG_KERNEL_GZIP
+#define BOOT_HEAP_SIZE 0x10000
+#include "../../../../lib/decompress_inflate.c"
+#endif
-/* ===========================================================================
- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
- * (Used for the decompressed data only.)
- */
-static void flush_window(void)
-{
- ulg c = crc; /* temporary variable */
- unsigned n;
- uch *in, *out, ch;
+#ifdef CONFIG_KERNEL_BZIP2
+#define BOOT_HEAP_SIZE 0x400000
+#include "../../../../lib/decompress_bunzip2.c"
+#endif
- in = window;
- out = &output_data[output_ptr];
- for (n = 0; n < outcnt; n++) {
- ch = *out++ = *in++;
- c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
- }
- crc = c;
- bytes_out += (ulg)outcnt;
- output_ptr += (ulg)outcnt;
- outcnt = 0;
-}
+#ifdef CONFIG_KERNEL_LZMA
+#define BOOT_HEAP_SIZE 0x10000
+#include "../../../../lib/decompress_unlzma.c"
+#endif
static void error(char *x)
{
@@ -153,20 +62,20 @@ static void error(char *x)
while(1); /* Halt */
}
-/* return decompressed size */
void
decompress_kernel(int mmu_on, unsigned char *zimage_data,
unsigned int zimage_len, unsigned long heap)
{
+ unsigned char *input_data = zimage_data;
+ int input_len = zimage_len;
+ unsigned char *output_data;
+
output_data = (unsigned char *)CONFIG_MEMORY_START + 0x2000
+ (mmu_on ? 0x80000000 : 0);
free_mem_ptr = heap;
- free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
- input_data = zimage_data;
- input_len = zimage_len;
+ free_mem_end_ptr = free_mem_ptr + BOOT_HEAP_SIZE;
- makecrc();
- puts("Uncompressing Linux... ");
- gunzip();
- puts("Ok, booting the kernel.\n");
+ puts("\nDecompressing Linux... ");
+ decompress(input_data, input_len, NULL, NULL, output_data, NULL, error);
+ puts("done.\nBooting the kernel.\n");
}