summaryrefslogtreecommitdiffstats
path: root/target/linux/generic-2.6/image/lzma-loader/src/decompress.c
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/generic-2.6/image/lzma-loader/src/decompress.c')
-rw-r--r--target/linux/generic-2.6/image/lzma-loader/src/decompress.c157
1 files changed, 0 insertions, 157 deletions
diff --git a/target/linux/generic-2.6/image/lzma-loader/src/decompress.c b/target/linux/generic-2.6/image/lzma-loader/src/decompress.c
deleted file mode 100644
index 45ac509cd..000000000
--- a/target/linux/generic-2.6/image/lzma-loader/src/decompress.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * LZMA compressed kernel decompressor for bcm947xx boards
- *
- * Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- *
- * Please note, this was code based on the bunzip2 decompressor code
- * by Manuel Novoa III (mjn3@codepoet.org), although the only thing left
- * is an idea and part of original vendor code
- *
- *
- * 12-Mar-2005 Mineharu Takahara <mtakahar@yahoo.com>
- * pass actual output size to decoder (stream mode
- * compressed input is not a requirement anymore)
- *
- * 24-Apr-2005 Oleg I. Vdovikin
- * reordered functions using lds script, removed forward decl
- *
- * ??-Nov-2005 Mike Baker
- * reorder the script as an lzma wrapper; do not depend on flash access
- */
-
-#include "LzmaDecode.h"
-
-#define KSEG0 0x80000000
-#define KSEG1 0xa0000000
-
-#define KSEG1ADDR(a) ((((unsigned)(a)) & 0x1fffffffU) | KSEG1)
-
-#define Index_Invalidate_I 0x00
-#define Index_Writeback_Inv_D 0x01
-
-#define cache_unroll(base,op) \
- __asm__ __volatile__( \
- ".set noreorder;\n" \
- ".set mips3;\n" \
- "cache %1, (%0);\n" \
- ".set mips0;\n" \
- ".set reorder\n" \
- : \
- : "r" (base), \
- "i" (op));
-
-
-static __inline__ void blast_icache(unsigned long size, unsigned long lsize)
-{
- unsigned long start = KSEG0;
- unsigned long end = (start + size);
-
- while(start < end) {
- cache_unroll(start,Index_Invalidate_I);
- start += lsize;
- }
-}
-
-static __inline__ void blast_dcache(unsigned long size, unsigned long lsize)
-{
- unsigned long start = KSEG0;
- unsigned long end = (start + size);
-
- while(start < end) {
- cache_unroll(start,Index_Writeback_Inv_D);
- start += lsize;
- }
-}
-
-unsigned char *data;
-
-static int read_byte(void *object, unsigned char **buffer, UInt32 *bufferSize)
-{
- *bufferSize = 1;
- *buffer = data;
- ++data;
- return LZMA_RESULT_OK;
-}
-
-static __inline__ unsigned char get_byte(void)
-{
- unsigned char *buffer;
- UInt32 fake;
-
- return read_byte(0, &buffer, &fake), *buffer;
-}
-
-/* This puts lzma workspace 128k below RAM end.
- * That should be enough for both lzma and stack
- */
-static char *buffer = (char *)(RAMSTART + RAMSIZE - 0x00020000);
-extern char lzma_start[];
-extern char lzma_end[];
-
-/* should be the first function */
-void entry(unsigned long icache_size, unsigned long icache_lsize,
- unsigned long dcache_size, unsigned long dcache_lsize)
-{
- unsigned int i; /* temp value */
- unsigned int osize; /* uncompressed size */
- volatile unsigned int arg0, arg1, arg2, arg3;
-
- /* restore argument registers */
- __asm__ __volatile__ ("ori %0, $12, 0":"=r"(arg0));
- __asm__ __volatile__ ("ori %0, $13, 0":"=r"(arg1));
- __asm__ __volatile__ ("ori %0, $14, 0":"=r"(arg2));
- __asm__ __volatile__ ("ori %0, $15, 0":"=r"(arg3));
-
- ILzmaInCallback callback;
- CLzmaDecoderState vs;
- callback.Read = read_byte;
-
- data = lzma_start;
-
- /* lzma args */
- i = get_byte();
- vs.Properties.lc = i % 9, i = i / 9;
- vs.Properties.lp = i % 5, vs.Properties.pb = i / 5;
-
- vs.Probs = (CProb *)buffer;
-
- /* skip rest of the LZMA coder property */
- for (i = 0; i < 4; i++)
- get_byte();
-
- /* read the lower half of uncompressed size in the header */
- osize = ((unsigned int)get_byte()) +
- ((unsigned int)get_byte() << 8) +
- ((unsigned int)get_byte() << 16) +
- ((unsigned int)get_byte() << 24);
-
- /* skip rest of the header (upper half of uncompressed size) */
- for (i = 0; i < 4; i++)
- get_byte();
-
- /* decompress kernel */
- if ((i = LzmaDecode(&vs, &callback,
- (unsigned char*)KERNEL_ENTRY, osize, &osize)) == LZMA_RESULT_OK)
- {
- blast_dcache(dcache_size, dcache_lsize);
- blast_icache(icache_size, icache_lsize);
-
- /* Jump to load address */
- ((void (*)(int a0, int a1, int a2, int a3)) KERNEL_ENTRY)(arg0, arg1, arg2, arg3);
- }
-}