From c6458418e5d8eeaad8f00c1371ead5429329cd4b Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Tue, 21 Jul 2009 02:31:37 +0000
Subject: add a new arm lzma kernel decompressor based on rewritten (and much
more readable) unlzma code. backport to 2.6.28 as well. tested on ixp4xx and
orion
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16939 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
.../patches-2.6.28/960-arm_lzma_loader.patch | 719 ++++++++++
.../patches-2.6.30/960-arm_lzma_loader.patch | 1483 +++++++++-----------
.../patches-2.6.30/998-openwrt_lzma_options.patch | 2 +-
3 files changed, 1361 insertions(+), 843 deletions(-)
create mode 100644 target/linux/generic-2.6/patches-2.6.28/960-arm_lzma_loader.patch
diff --git a/target/linux/generic-2.6/patches-2.6.28/960-arm_lzma_loader.patch b/target/linux/generic-2.6/patches-2.6.28/960-arm_lzma_loader.patch
new file mode 100644
index 0000000000..986c282713
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.28/960-arm_lzma_loader.patch
@@ -0,0 +1,719 @@
+--- a/arch/arm/boot/compressed/Makefile
++++ b/arch/arm/boot/compressed/Makefile
+@@ -67,7 +67,7 @@ endif
+
+ SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
+
+-targets := vmlinux vmlinux.lds piggy.gz piggy.o font.o font.c \
++targets := vmlinux vmlinux.lds piggy.lzma piggy.o font.o font.c \
+ head.o misc.o $(OBJS)
+
+ ifeq ($(CONFIG_FUNCTION_TRACER),y)
+@@ -100,10 +100,10 @@ $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj
+ $(call if_changed,ld)
+ @:
+
+-$(obj)/piggy.gz: $(obj)/../Image FORCE
+- $(call if_changed,gzip)
++$(obj)/piggy.lzma: $(obj)/../Image FORCE
++ $(call if_changed,lzma)
+
+-$(obj)/piggy.o: $(obj)/piggy.gz FORCE
++$(obj)/piggy.o: $(obj)/piggy.lzma FORCE
+
+ CFLAGS_font.o := -Dstatic=
+
+--- a/arch/arm/boot/compressed/misc.c
++++ b/arch/arm/boot/compressed/misc.c
+@@ -166,36 +166,10 @@ static inline __ptr_t memcpy(__ptr_t __d
+ return __dest;
+ }
+
+-/*
+- * gzip delarations
+- */
+-#define OF(args) args
+-#define STATIC static
+-
+-typedef unsigned char uch;
+-typedef unsigned short ush;
+-typedef unsigned long ulg;
+-
+-#define WSIZE 0x8000 /* Window size must be at least 32k, */
++#define WSIZE 0x20000 /* Window size must be at least 128k, */
+ /* and a power of two */
+
+-static uch *inbuf; /* input buffer */
+-static uch window[WSIZE]; /* Sliding window buffer */
+-
+-static unsigned insize; /* valid bytes in inbuf */
+-static unsigned inptr; /* index of next byte to be processed in inbuf */
+-static unsigned outcnt; /* 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())
++static u8 window[WSIZE]; /* Sliding window buffer */
+
+ /* Diagnostic functions */
+ #ifdef DEBUG
+@@ -214,24 +188,21 @@ static unsigned outcnt; /* bytes in out
+ # define Tracecv(c,x)
+ #endif
+
+-static int fill_inbuf(void);
+-static void flush_window(void);
+ static void error(char *m);
+
+ extern char input_data[];
+ extern char input_data_end[];
+
+-static uch *output_data;
+-static ulg output_ptr;
+-static ulg bytes_out;
++static unsigned long output_ptr;
++static unsigned long bytes_out;
+
+ static void error(char *m);
+
+ static void putstr(const char *);
+
+ extern int end;
+-static ulg free_mem_ptr;
+-static ulg free_mem_end_ptr;
++static unsigned long free_mem_ptr;
++static unsigned long free_mem_end_ptr;
+
+ #ifdef STANDALONE_DEBUG
+ #define NO_INFLATE_MALLOC
+@@ -239,50 +210,10 @@ static ulg free_mem_end_ptr;
+
+ #define ARCH_HAS_DECOMP_WDOG
+
+-#include "../../../../lib/inflate.c"
+-
+-/* ===========================================================================
+- * Fill the input buffer. This is called only when the buffer is empty
+- * and at least one byte is really needed.
+- */
+-int fill_inbuf(void)
+-{
+- if (insize != 0)
+- error("ran out of input data");
+-
+- inbuf = input_data;
+- insize = &input_data_end[0] - &input_data[0];
+-
+- inptr = 1;
+- return inbuf[0];
+-}
+-
+-/* ===========================================================================
+- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
+- * (Used for the decompressed data only.)
+- */
+-void flush_window(void)
+-{
+- ulg c = crc;
+- unsigned n;
+- uch *in, *out, ch;
+-
+- 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;
+- putstr(".");
+-}
+-
+ #ifndef arch_error
+ #define arch_error(x)
+ #endif
++#include "unlzma.c"
+
+ static void error(char *x)
+ {
+@@ -297,20 +228,16 @@ static void error(char *x)
+
+ #ifndef STANDALONE_DEBUG
+
+-ulg
+-decompress_kernel(ulg output_start, ulg free_mem_ptr_p, ulg free_mem_ptr_end_p,
++unsigned long
++decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p, unsigned long free_mem_ptr_end_p,
+ int arch_id)
+ {
+- output_data = (uch *)output_start; /* Points to kernel start */
+- free_mem_ptr = free_mem_ptr_p;
+- free_mem_end_ptr = free_mem_ptr_end_p;
+ __machine_arch_type = arch_id;
+
+ arch_decomp_setup();
+
+- makecrc();
+ putstr("Uncompressing Linux...");
+- gunzip();
++ output_ptr += unlzma((u8 *) output_start, input_data, window);
+ putstr(" done, booting the kernel.\n");
+ return output_ptr;
+ }
+@@ -320,11 +247,8 @@ char output_buffer[1500*1024];
+
+ int main()
+ {
+- output_data = output_buffer;
+-
+- makecrc();
+ putstr("Uncompressing Linux...");
+- gunzip();
++ unlzma((u8 *) output_buffer, input_data, window);
+ putstr("done.\n");
+ return 0;
+ }
+--- a/arch/arm/boot/compressed/piggy.S
++++ b/arch/arm/boot/compressed/piggy.S
+@@ -1,6 +1,6 @@
+ .section .piggydata,#alloc
+ .globl input_data
+ input_data:
+- .incbin "arch/arm/boot/compressed/piggy.gz"
++ .incbin "arch/arm/boot/compressed/piggy.lzma"
+ .globl input_data_end
+ input_data_end:
+--- /dev/null
++++ b/arch/arm/boot/compressed/unlzma.c
+@@ -0,0 +1,429 @@
++/*
++ * Copyright (c) 2009 Felix Fietkau <nbd@openwrt.org>
++ *
++ * 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,
++ * 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * uncompress.c
++ */
++
++#include <linux/types.h>
++#include <asm/byteorder.h>
++#include "unlzma.h"
++
++struct unlzma_ctx {
++ const u8 *next_in;
++ u8 *next_out;
++ u8 *outbuf;
++
++ /* reader state */
++ u32 code;
++ u32 range;
++ u32 bound;
++
++ /* writer state */
++ u8 previous_byte;
++ ssize_t pos;
++
++ /* cstate */
++ int state;
++ u32 rep0, rep1, rep2, rep3;
++
++ void *workspace;
++} ctx;
++
++static int inbs = 0;
++static inline u8
++rc_read(void)
++{
++#if 0
++ if (unlikely(++inbs > 16 * 1024)) {
++ putstr(".");
++ inbs = 0;
++ }
++#endif
++ return *(ctx.next_in++);
++}
++
++
++static inline void
++rc_get_code(void)
++{
++ ctx.code = (ctx.code << 8) | rc_read();
++}
++
++static inline void
++rc_normalize(void)
++{
++ if (ctx.range < (1 << RC_TOP_BITS)) {
++ ctx.range <<= 8;
++ rc_get_code();
++ }
++}
++
++static inline int
++rc_is_bit_0(u16 *p)
++{
++ rc_normalize();
++ ctx.bound = *p * (ctx.range >> RC_MODEL_TOTAL_BITS);
++ return ctx.code < ctx.bound;
++}
++
++static inline void
++rc_update_bit_0(u16 *p)
++{
++ ctx.range = ctx.bound;
++ *p += ((1 << RC_MODEL_TOTAL_BITS) - *p) >> RC_MOVE_BITS;
++}
++
++static inline void
++rc_update_bit_1(u16 *p)
++{
++ ctx.range -= ctx.bound;
++ ctx.code -= ctx.bound;
++ *p -= *p >> RC_MOVE_BITS;
++}
++
++static inline bool
++rc_get_bit(u16 *p, int *symbol)
++{
++ if (rc_is_bit_0(p)) {
++ rc_update_bit_0(p);
++ *symbol *= 2;
++ return 0;
++ } else {
++ rc_update_bit_1(p);
++ *symbol = *symbol * 2 + 1;
++ return 1;
++ }
++}
++
++static inline int
++rc_direct_bit(void)
++{
++ rc_normalize();
++ ctx.range >>= 1;
++ if (ctx.code >= ctx.range) {
++ ctx.code -= ctx.range;
++ return 1;
++ }
++ return 0;
++}
++
++static inline void
++rc_bit_tree_decode(u16 *p, int num_levels, int *symbol)
++{
++ int i = num_levels;
++
++ *symbol = 1;
++ while (i--)
++ rc_get_bit(p + *symbol, symbol);
++ *symbol -= 1 << num_levels;
++}
++
++static inline u8
++peek_old_byte(u32 offs)
++{
++ u32 pos = ctx.pos - offs;
++ return ctx.outbuf[pos];
++}
++
++static inline void
++write_byte(u8 byte)
++{
++ ctx.previous_byte = byte;
++ *(ctx.next_out++) = byte;
++ ctx.pos++;
++}
++
++
++static inline void
++copy_byte(u32 offs)
++{
++ write_byte(peek_old_byte(offs));
++}
++
++static inline void
++copy_bytes(u32 rep0, int len)
++{
++ do {
++ copy_byte(rep0);
++ len--;
++ } while (len != 0);
++}
++
++static inline void
++process_bit0(u16 *p, int pos_state, u16 *prob,
++ int lc, u32 literal_pos_mask)
++{
++ int mi = 1;
++ rc_update_bit_0(prob);
++ prob = (p + LZMA_LITERAL +
++ (LZMA_LIT_SIZE
++ * (((ctx.pos & literal_pos_mask) << lc)
++ + (ctx.previous_byte >> (8 - lc))))
++ );
++
++ if (ctx.state >= LZMA_NUM_LIT_STATES) {
++ int match_byte = peek_old_byte(ctx.rep0);
++ do {
++ u16 bit;
++ u16 *prob_lit;
++
++ match_byte <<= 1;
++ bit = match_byte & 0x100;
++ prob_lit = prob + 0x100 + bit + mi;
++ if (rc_get_bit(prob_lit, &mi) != !!bit)
++ break;
++ } while (mi < 0x100);
++ }
++ while (mi < 0x100) {
++ u16 *prob_lit = prob + mi;
++ rc_get_bit(prob_lit, &mi);
++ }
++ write_byte(mi);
++ if (ctx.state < 4)
++ ctx.state = 0;
++ else if (ctx.state < 10)
++ ctx.state -= 3;
++ else
++ ctx.state -= 6;
++}
++
++static inline void
++process_bit1(u16 *p, int pos_state, u16 *prob)
++{
++ int offset;
++ u16 *prob_len;
++ int num_bits;
++ int len;
++
++ rc_update_bit_1(prob);
++ prob = p + LZMA_IS_REP + ctx.state;
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++ ctx.rep3 = ctx.rep2;
++ ctx.rep2 = ctx.rep1;
++ ctx.rep1 = ctx.rep0;
++ ctx.state = ctx.state < LZMA_NUM_LIT_STATES ? 0 : 3;
++ prob = p + LZMA_LEN_CODER;
++ } else {
++ rc_update_bit_1(prob);
++ prob = p + LZMA_IS_REP_G0 + ctx.state;
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++ prob = (p + LZMA_IS_REP_0_LONG
++ + (ctx.state <<
++ LZMA_NUM_POS_BITS_MAX) +
++ pos_state);
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++
++ ctx.state = ctx.state < LZMA_NUM_LIT_STATES ?
++ 9 : 11;
++ copy_byte(ctx.rep0);
++ return;
++ } else {
++ rc_update_bit_1(prob);
++ }
++ } else {
++ u32 distance;
++
++ rc_update_bit_1(prob);
++ prob = p + LZMA_IS_REP_G1 + ctx.state;
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++ distance = ctx.rep1;
++ } else {
++ rc_update_bit_1(prob);
++ prob = p + LZMA_IS_REP_G2 + ctx.state;
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++ distance = ctx.rep2;
++ } else {
++ rc_update_bit_1(prob);
++ distance = ctx.rep3;
++ ctx.rep3 = ctx.rep2;
++ }
++ ctx.rep2 = ctx.rep1;
++ }
++ ctx.rep1 = ctx.rep0;
++ ctx.rep0 = distance;
++ }
++ ctx.state = ctx.state < LZMA_NUM_LIT_STATES ? 8 : 11;
++ prob = p + LZMA_REP_LEN_CODER;
++ }
++
++ prob_len = prob + LZMA_LEN_CHOICE;
++ if (rc_is_bit_0(prob_len)) {
++ rc_update_bit_0(prob_len);
++ prob_len = (prob + LZMA_LEN_LOW
++ + (pos_state <<
++ LZMA_LEN_NUM_LOW_BITS));
++ offset = 0;
++ num_bits = LZMA_LEN_NUM_LOW_BITS;
++ } else {
++ rc_update_bit_1(prob_len);
++ prob_len = prob + LZMA_LEN_CHOICE_2;
++ if (rc_is_bit_0(prob_len)) {
++ rc_update_bit_0(prob_len);
++ prob_len = (prob + LZMA_LEN_MID
++ + (pos_state <<
++ LZMA_LEN_NUM_MID_BITS));
++ offset = 1 << LZMA_LEN_NUM_LOW_BITS;
++ num_bits = LZMA_LEN_NUM_MID_BITS;
++ } else {
++ rc_update_bit_1(prob_len);
++ prob_len = prob + LZMA_LEN_HIGH;
++ offset = ((1 << LZMA_LEN_NUM_LOW_BITS)
++ + (1 << LZMA_LEN_NUM_MID_BITS));
++ num_bits = LZMA_LEN_NUM_HIGH_BITS;
++ }
++ }
++
++ rc_bit_tree_decode(prob_len, num_bits, &len);
++ len += offset;
++
++ if (ctx.state < 4) {
++ int pos_slot;
++
++ ctx.state += LZMA_NUM_LIT_STATES;
++ prob =
++ p + LZMA_POS_SLOT +
++ ((len <
++ LZMA_NUM_LEN_TO_POS_STATES ? len :
++ LZMA_NUM_LEN_TO_POS_STATES - 1)
++ << LZMA_NUM_POS_SLOT_BITS);
++ rc_bit_tree_decode(prob,
++ LZMA_NUM_POS_SLOT_BITS,
++ &pos_slot);
++ if (pos_slot >= LZMA_START_POS_MODEL_INDEX) {
++ int i, mi;
++ num_bits = (pos_slot >> 1) - 1;
++ ctx.rep0 = 2 | (pos_slot & 1);
++ if (pos_slot < LZMA_END_POS_MODEL_INDEX) {
++ ctx.rep0 <<= num_bits;
++ prob = p + LZMA_SPEC_POS +
++ ctx.rep0 - pos_slot - 1;
++ } else {
++ num_bits -= LZMA_NUM_ALIGN_BITS;
++ while (num_bits--)
++ ctx.rep0 = (ctx.rep0 << 1) |
++ rc_direct_bit();
++ prob = p + LZMA_ALIGN;
++ ctx.rep0 <<= LZMA_NUM_ALIGN_BITS;
++ num_bits = LZMA_NUM_ALIGN_BITS;
++ }
++ i = 1;
++ mi = 1;
++ while (num_bits--) {
++ if (rc_get_bit(prob + mi, &mi))
++ ctx.rep0 |= i;
++ i <<= 1;
++ }
++ } else
++ ctx.rep0 = pos_slot;
++ if (++(ctx.rep0) == 0)
++ return;
++ }
++
++ len += LZMA_MATCH_MIN_LEN;
++
++ copy_bytes(ctx.rep0, len);
++}
++
++
++static int
++do_unlzma(void)
++{
++ u8 hdr_buf[sizeof(struct lzma_header)];
++ struct lzma_header *header = (struct lzma_header *)hdr_buf;
++ u32 pos_state_mask;
++ u32 literal_pos_mask;
++ int lc, pb, lp;
++ int num_probs;
++ int i, mi;
++ u16 *p;
++
++ for (i = 0; i < sizeof(struct lzma_header); i++) {
++ hdr_buf[i] = rc_read();
++ }
++
++ ctx.pos = 0;
++ ctx.state = 0;
++ ctx.rep0 = ctx.rep1 = ctx.rep2 = ctx.rep3 = 1;
++
++ ctx.previous_byte = 0;
++ ctx.code = 0;
++ ctx.range = 0xFFFFFFFF;
++
++ if (header->pos >= (9 * 5 * 5))
++ return -1;
++
++ mi = 0;
++ lc = header->pos;
++ while (lc >= 9) {
++ mi++;
++ lc -= 9;
++ }
++ pb = 0;
++ lp = mi;
++ while (lp >= 5) {
++ pb++;
++ lp -= 5;
++ }
++ pos_state_mask = (1 << pb) - 1;
++ literal_pos_mask = (1 << lp) - 1;
++
++ p = (u16 *) ctx.workspace;
++ if (!p)
++ return -1;
++
++ num_probs = LZMA_LITERAL + (LZMA_LIT_SIZE << (lc + lp));
++ for (i = 0; i < num_probs; i++)
++ p[i] = (1 << RC_MODEL_TOTAL_BITS) >> 1;
++
++ for (i = 0; i < 5; i++)
++ rc_get_code();
++
++ while (1) {
++ int pos_state = ctx.pos & pos_state_mask;
++ u16 *prob = p + LZMA_IS_MATCH +
++ (ctx.state << LZMA_NUM_POS_BITS_MAX) + pos_state;
++ if (rc_is_bit_0(prob))
++ process_bit0(p, pos_state, prob,
++ lc, literal_pos_mask);
++ else {
++ process_bit1(p, pos_state, prob);
++ if (ctx.rep0 == 0)
++ break;
++ }
++ }
++
++ return ctx.pos;
++}
++
++
++static int unlzma(unsigned char *dest, const unsigned char *src, unsigned char *workspace)
++{
++ memset(&ctx, 0, sizeof(ctx));
++ ctx.outbuf = dest;
++ ctx.next_in = src;
++ ctx.next_out = dest;
++ ctx.workspace = workspace;
++
++ return do_unlzma();
++}
++
++
+--- /dev/null
++++ b/arch/arm/boot/compressed/unlzma.h
+@@ -0,0 +1,81 @@
++/* LZMA uncompresion module for pcomp
++ * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
++ *
++ * Based on:
++ * Initial Linux kernel adaptation
++ * Copyright (C) 2006 Alain < alain@knaff.lu >
++ *
++ * Based on small lzma deflate implementation/Small range coder
++ * implementation for lzma.
++ * Copyright (C) 2006 Aurelien Jacobs < aurel@gnuage.org >
++ *
++ * Based on LzmaDecode.c from the LZMA SDK 4.22 (http://www.7-zip.org/)
++ * Copyright (C) 1999-2005 Igor Pavlov
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ */
++#ifndef __UNLZMA_H
++#define __UNLZMA_H
++
++struct lzma_header {
++ __u8 pos;
++ __le32 dict_size;
++ __le64 uncompr_size;
++} __attribute__ ((packed));
++
++
++#define RC_TOP_BITS 24
++#define RC_MOVE_BITS 5
++#define RC_MODEL_TOTAL_BITS 11
++
++#define LZMA_BASE_SIZE 1846
++#define LZMA_LIT_SIZE 768
++
++#define LZMA_NUM_POS_BITS_MAX 4
++
++#define LZMA_LEN_NUM_LOW_BITS 3
++#define LZMA_LEN_NUM_MID_BITS 3
++#define LZMA_LEN_NUM_HIGH_BITS 8
++
++#define LZMA_LEN_CHOICE 0
++#define LZMA_LEN_CHOICE_2 (LZMA_LEN_CHOICE + 1)
++#define LZMA_LEN_LOW (LZMA_LEN_CHOICE_2 + 1)
++#define LZMA_LEN_MID (LZMA_LEN_LOW \
++ + (1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_LOW_BITS)))
++#define LZMA_LEN_HIGH (LZMA_LEN_MID \
++ +(1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_MID_BITS)))
++#define LZMA_NUM_LEN_PROBS (LZMA_LEN_HIGH + (1 << LZMA_LEN_NUM_HIGH_BITS))
++
++#define LZMA_NUM_STATES 12
++#define LZMA_NUM_LIT_STATES 7
++
++#define LZMA_START_POS_MODEL_INDEX 4
++#define LZMA_END_POS_MODEL_INDEX 14
++#define LZMA_NUM_FULL_DISTANCES (1 << (LZMA_END_POS_MODEL_INDEX >> 1))
++
++#define LZMA_NUM_POS_SLOT_BITS 6
++#define LZMA_NUM_LEN_TO_POS_STATES 4
++
++#define LZMA_NUM_ALIGN_BITS 4
++
++#define LZMA_MATCH_MIN_LEN 2
++
++#define LZMA_IS_MATCH 0
++#define LZMA_IS_REP (LZMA_IS_MATCH + (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
++#define LZMA_IS_REP_G0 (LZMA_IS_REP + LZMA_NUM_STATES)
++#define LZMA_IS_REP_G1 (LZMA_IS_REP_G0 + LZMA_NUM_STATES)
++#define LZMA_IS_REP_G2 (LZMA_IS_REP_G1 + LZMA_NUM_STATES)
++#define LZMA_IS_REP_0_LONG (LZMA_IS_REP_G2 + LZMA_NUM_STATES)
++#define LZMA_POS_SLOT (LZMA_IS_REP_0_LONG \
++ + (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
++#define LZMA_SPEC_POS (LZMA_POS_SLOT \
++ +(LZMA_NUM_LEN_TO_POS_STATES << LZMA_NUM_POS_SLOT_BITS))
++#define LZMA_ALIGN (LZMA_SPEC_POS \
++ + LZMA_NUM_FULL_DISTANCES - LZMA_END_POS_MODEL_INDEX)
++#define LZMA_LEN_CODER (LZMA_ALIGN + (1 << LZMA_NUM_ALIGN_BITS))
++#define LZMA_REP_LEN_CODER (LZMA_LEN_CODER + LZMA_NUM_LEN_PROBS)
++#define LZMA_LITERAL (LZMA_REP_LEN_CODER + LZMA_NUM_LEN_PROBS)
++
++#endif
+--- a/scripts/Makefile.lib
++++ b/scripts/Makefile.lib
+@@ -182,4 +182,6 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS)
+ quiet_cmd_gzip = GZIP $@
+ cmd_gzip = gzip -f -9 < $< > $@
+
++quiet_cmd_lzma = LZMA $@
++cmd_lzma = lzma e $< $@ -lc1 -lp2 -pb2 -eos
+
diff --git a/target/linux/generic-2.6/patches-2.6.30/960-arm_lzma_loader.patch b/target/linux/generic-2.6/patches-2.6.30/960-arm_lzma_loader.patch
index 7995b5e515..f159898ba8 100644
--- a/target/linux/generic-2.6/patches-2.6.30/960-arm_lzma_loader.patch
+++ b/target/linux/generic-2.6/patches-2.6.30/960-arm_lzma_loader.patch
@@ -1,741 +1,5 @@
---- /dev/null
-+++ b/arch/arm/boot/compressed/LzmaDecode.c
-@@ -0,0 +1,590 @@
-+/*
-+ LzmaDecode.c
-+ LZMA Decoder (optimized for Speed version)
-+
-+ LZMA SDK 4.22 Copyright (c) 1999-2005 Igor Pavlov (2005-06-10)
-+ http://www.7-zip.org/
-+
-+ LZMA SDK is licensed under two licenses:
-+ 1) GNU Lesser General Public License (GNU LGPL)
-+ 2) Common Public License (CPL)
-+ It means that you can select one of these two licenses and
-+ follow rules of that license.
-+
-+ SPECIAL EXCEPTION:
-+ Igor Pavlov, as the author of this Code, expressly permits you to
-+ statically or dynamically link your Code (or bind by name) to the
-+ interfaces of this file without subjecting your linked Code to the
-+ terms of the CPL or GNU LGPL. Any modifications or additions
-+ to this file, however, are subject to the LGPL or CPL terms.
-+*/
-+
-+#include "LzmaDecode.h"
-+
-+#ifndef Byte
-+#define Byte unsigned char
-+#endif
-+
-+#define kNumTopBits 24
-+#define kTopValue ((UInt32)1 << kNumTopBits)
-+
-+#define kNumBitModelTotalBits 11
-+#define kBitModelTotal (1 << kNumBitModelTotalBits)
-+#define kNumMoveBits 5
-+
-+#define RC_READ_BYTE (*Buffer++)
-+
-+#define RC_INIT2 Code = 0; Range = 0xFFFFFFFF; \
-+ { int i; for(i = 0; i < 5; i++) { RC_TEST; Code = (Code << 8) | RC_READ_BYTE; }}
-+
-+#ifdef _LZMA_IN_CB
-+
-+#define RC_TEST { if (Buffer == BufferLim) \
-+ { SizeT size; int result = InCallback->Read(InCallback, &Buffer, &size); if (result != LZMA_RESULT_OK) return result; \
-+ BufferLim = Buffer + size; if (size == 0) return LZMA_RESULT_DATA_ERROR; }}
-+
-+#define RC_INIT Buffer = BufferLim = 0; RC_INIT2
-+
-+#else
-+
-+#define RC_TEST { if (Buffer == BufferLim) return LZMA_RESULT_DATA_ERROR; }
-+
-+#define RC_INIT(buffer, bufferSize) Buffer = buffer; BufferLim = buffer + bufferSize; RC_INIT2
-+
-+#endif
-+
-+#define RC_NORMALIZE if (Range < kTopValue) { RC_TEST; Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; }
-+
-+#define IfBit0(p) RC_NORMALIZE; bound = (Range >> kNumBitModelTotalBits) * *(p); if (Code < bound)
-+#define UpdateBit0(p) Range = bound; *(p) += (kBitModelTotal - *(p)) >> kNumMoveBits;
-+#define UpdateBit1(p) Range -= bound; Code -= bound; *(p) -= (*(p)) >> kNumMoveBits;
-+
-+#define RC_GET_BIT2(p, mi, A0, A1) IfBit0(p) \
-+ { UpdateBit0(p); mi <<= 1; A0; } else \
-+ { UpdateBit1(p); mi = (mi + mi) + 1; A1; }
-+
-+#define RC_GET_BIT(p, mi) RC_GET_BIT2(p, mi, ; , ;)
-+
-+#define RangeDecoderBitTreeDecode(probs, numLevels, res) \
-+ { int i = numLevels; res = 1; \
-+ do { CProb *p = probs + res; RC_GET_BIT(p, res) } while(--i != 0); \
-+ res -= (1 << numLevels); }
-+
-+
-+#define kNumPosBitsMax 4
-+#define kNumPosStatesMax (1 << kNumPosBitsMax)
-+
-+#define kLenNumLowBits 3
-+#define kLenNumLowSymbols (1 << kLenNumLowBits)
-+#define kLenNumMidBits 3
-+#define kLenNumMidSymbols (1 << kLenNumMidBits)
-+#define kLenNumHighBits 8
-+#define kLenNumHighSymbols (1 << kLenNumHighBits)
-+
-+#define LenChoice 0
-+#define LenChoice2 (LenChoice + 1)
-+#define LenLow (LenChoice2 + 1)
-+#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))
-+#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))
-+#define kNumLenProbs (LenHigh + kLenNumHighSymbols)
-+
-+
-+#define kNumStates 12
-+#define kNumLitStates 7
-+
-+#define kStartPosModelIndex 4
-+#define kEndPosModelIndex 14
-+#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
-+
-+#define kNumPosSlotBits 6
-+#define kNumLenToPosStates 4
-+
-+#define kNumAlignBits 4
-+#define kAlignTableSize (1 << kNumAlignBits)
-+
-+#define kMatchMinLen 2
-+
-+#define IsMatch 0
-+#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))
-+#define IsRepG0 (IsRep + kNumStates)
-+#define IsRepG1 (IsRepG0 + kNumStates)
-+#define IsRepG2 (IsRepG1 + kNumStates)
-+#define IsRep0Long (IsRepG2 + kNumStates)
-+#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))
-+#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))
-+#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)
-+#define LenCoder (Align + kAlignTableSize)
-+#define RepLenCoder (LenCoder + kNumLenProbs)
-+#define Literal (RepLenCoder + kNumLenProbs)
-+
-+#if Literal != LZMA_BASE_SIZE
-+StopCompilingDueBUG
-+#endif
-+
-+#if 0
-+int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size)
-+{
-+ unsigned char prop0;
-+ if (size < LZMA_PROPERTIES_SIZE)
-+ return LZMA_RESULT_DATA_ERROR;
-+ prop0 = propsData[0];
-+ if (prop0 >= (9 * 5 * 5))
-+ return LZMA_RESULT_DATA_ERROR;
-+ {
-+ for (propsRes->pb = 0; prop0 >= (9 * 5); propsRes->pb++, prop0 -= (9 * 5));
-+ for (propsRes->lp = 0; prop0 >= 9; propsRes->lp++, prop0 -= 9);
-+ propsRes->lc = prop0;
-+ /*
-+ unsigned char remainder = (unsigned char)(prop0 / 9);
-+ propsRes->lc = prop0 % 9;
-+ propsRes->pb = remainder / 5;
-+ propsRes->lp = remainder % 5;
-+ */
-+ }
-+
-+ #ifdef _LZMA_OUT_READ
-+ {
-+ int i;
-+ propsRes->DictionarySize = 0;
-+ for (i = 0; i < 4; i++)
-+ propsRes->DictionarySize += (UInt32)(propsData[1 + i]) << (i * 8);
-+ if (propsRes->DictionarySize == 0)
-+ propsRes->DictionarySize = 1;
-+ }
-+ #endif
-+ return LZMA_RESULT_OK;
-+}
-+#endif
-+
-+#define kLzmaStreamWasFinishedId (-1)
-+
-+int LzmaDecode(CLzmaDecoderState *vs,
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *InCallback,
-+ #else
-+ const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed,
-+ #endif
-+ unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed)
-+{
-+ CProb *p = vs->Probs;
-+ SizeT nowPos = 0;
-+ Byte previousByte = 0;
-+ UInt32 posStateMask = (1 << (vs->Properties.pb)) - 1;
-+ UInt32 literalPosMask = (1 << (vs->Properties.lp)) - 1;
-+ int lc = vs->Properties.lc;
-+
-+ #ifdef _LZMA_OUT_READ
-+
-+ UInt32 Range = vs->Range;
-+ UInt32 Code = vs->Code;
-+ #ifdef _LZMA_IN_CB
-+ const Byte *Buffer = vs->Buffer;
-+ const Byte *BufferLim = vs->BufferLim;
-+ #else
-+ const Byte *Buffer = inStream;
-+ const Byte *BufferLim = inStream + inSize;
-+ #endif
-+ int state = vs->State;
-+ UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3];
-+ int len = vs->RemainLen;
-+ UInt32 globalPos = vs->GlobalPos;
-+ UInt32 distanceLimit = vs->DistanceLimit;
-+
-+ Byte *dictionary = vs->Dictionary;
-+ UInt32 dictionarySize = vs->Properties.DictionarySize;
-+ UInt32 dictionaryPos = vs->DictionaryPos;
-+
-+ Byte tempDictionary[4];
-+
-+ #ifndef _LZMA_IN_CB
-+ *inSizeProcessed = 0;
-+ #endif
-+ *outSizeProcessed = 0;
-+ if (len == kLzmaStreamWasFinishedId)
-+ return LZMA_RESULT_OK;
-+
-+ if (dictionarySize == 0)
-+ {
-+ dictionary = tempDictionary;
-+ dictionarySize = 1;
-+ tempDictionary[0] = vs->TempDictionary[0];
-+ }
-+
-+ if (len == kLzmaNeedInitId)
-+ {
-+ {
-+ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp));
-+ UInt32 i;
-+ for (i = 0; i < numProbs; i++)
-+ p[i] = kBitModelTotal >> 1;
-+ rep0 = rep1 = rep2 = rep3 = 1;
-+ state = 0;
-+ globalPos = 0;
-+ distanceLimit = 0;
-+ dictionaryPos = 0;
-+ dictionary[dictionarySize - 1] = 0;
-+ #ifdef _LZMA_IN_CB
-+ RC_INIT;
-+ #else
-+ RC_INIT(inStream, inSize);
-+ #endif
-+ }
-+ len = 0;
-+ }
-+ while(len != 0 && nowPos < outSize)
-+ {
-+ UInt32 pos = dictionaryPos - rep0;
-+ if (pos >= dictionarySize)
-+ pos += dictionarySize;
-+ outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos];
-+ if (++dictionaryPos == dictionarySize)
-+ dictionaryPos = 0;
-+ len--;
-+ }
-+ if (dictionaryPos == 0)
-+ previousByte = dictionary[dictionarySize - 1];
-+ else
-+ previousByte = dictionary[dictionaryPos - 1];
-+
-+ #else /* if !_LZMA_OUT_READ */
-+
-+ int state = 0;
-+ UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1;
-+ int len = 0;
-+ const Byte *Buffer;
-+ const Byte *BufferLim;
-+ UInt32 Range;
-+ UInt32 Code;
-+
-+ #ifndef _LZMA_IN_CB
-+ *inSizeProcessed = 0;
-+ #endif
-+ *outSizeProcessed = 0;
-+
-+ {
-+ UInt32 i;
-+ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp));
-+ for (i = 0; i < numProbs; i++)
-+ p[i] = kBitModelTotal >> 1;
-+ }
-+
-+ #ifdef _LZMA_IN_CB
-+ RC_INIT;
-+ #else
-+ RC_INIT(inStream, inSize);
-+ #endif
-+
-+ #endif /* _LZMA_OUT_READ */
-+
-+ while(nowPos < outSize)
-+ {
-+ CProb *prob;
-+ UInt32 bound;
-+ int posState = (int)(
-+ (nowPos
-+ #ifdef _LZMA_OUT_READ
-+ + globalPos
-+ #endif
-+ )
-+ & posStateMask);
-+
-+ prob = p + IsMatch + (state << kNumPosBitsMax) + posState;
-+ IfBit0(prob)
-+ {
-+ int symbol = 1;
-+ UpdateBit0(prob)
-+ prob = p + Literal + (LZMA_LIT_SIZE *
-+ (((
-+ (nowPos
-+ #ifdef _LZMA_OUT_READ
-+ + globalPos
-+ #endif
-+ )
-+ & literalPosMask) << lc) + (previousByte >> (8 - lc))));
-+
-+ if (state >= kNumLitStates)
-+ {
-+ int matchByte;
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 pos = dictionaryPos - rep0;
-+ if (pos >= dictionarySize)
-+ pos += dictionarySize;
-+ matchByte = dictionary[pos];
-+ #else
-+ matchByte = outStream[nowPos - rep0];
-+ #endif
-+ do
-+ {
-+ int bit;
-+ CProb *probLit;
-+ matchByte <<= 1;
-+ bit = (matchByte & 0x100);
-+ probLit = prob + 0x100 + bit + symbol;
-+ RC_GET_BIT2(probLit, symbol, if (bit != 0) break, if (bit == 0) break)
-+ }
-+ while (symbol < 0x100);
-+ }
-+ while (symbol < 0x100)
-+ {
-+ CProb *probLit = prob + symbol;
-+ RC_GET_BIT(probLit, symbol)
-+ }
-+ previousByte = (Byte)symbol;
-+
-+ outStream[nowPos++] = previousByte;
-+ #ifdef _LZMA_OUT_READ
-+ if (distanceLimit < dictionarySize)
-+ distanceLimit++;
-+
-+ dictionary[dictionaryPos] = previousByte;
-+ if (++dictionaryPos == dictionarySize)
-+ dictionaryPos = 0;
-+ #endif
-+ if (state < 4) state = 0;
-+ else if (state < 10) state -= 3;
-+ else state -= 6;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ prob = p + IsRep + state;
-+ IfBit0(prob)
-+ {
-+ UpdateBit0(prob);
-+ rep3 = rep2;
-+ rep2 = rep1;
-+ rep1 = rep0;
-+ state = state < kNumLitStates ? 0 : 3;
-+ prob = p + LenCoder;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ prob = p + IsRepG0 + state;
-+ IfBit0(prob)
-+ {
-+ UpdateBit0(prob);
-+ prob = p + IsRep0Long + (state << kNumPosBitsMax) + posState;
-+ IfBit0(prob)
-+ {
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 pos;
-+ #endif
-+ UpdateBit0(prob);
-+
-+ #ifdef _LZMA_OUT_READ
-+ if (distanceLimit == 0)
-+ #else
-+ if (nowPos == 0)
-+ #endif
-+ return LZMA_RESULT_DATA_ERROR;
-+
-+ state = state < kNumLitStates ? 9 : 11;
-+ #ifdef _LZMA_OUT_READ
-+ pos = dictionaryPos - rep0;
-+ if (pos >= dictionarySize)
-+ pos += dictionarySize;
-+ previousByte = dictionary[pos];
-+ dictionary[dictionaryPos] = previousByte;
-+ if (++dictionaryPos == dictionarySize)
-+ dictionaryPos = 0;
-+ #else
-+ previousByte = outStream[nowPos - rep0];
-+ #endif
-+ outStream[nowPos++] = previousByte;
-+ #ifdef _LZMA_OUT_READ
-+ if (distanceLimit < dictionarySize)
-+ distanceLimit++;
-+ #endif
-+
-+ continue;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ }
-+ }
-+ else
-+ {
-+ UInt32 distance;
-+ UpdateBit1(prob);
-+ prob = p + IsRepG1 + state;
-+ IfBit0(prob)
-+ {
-+ UpdateBit0(prob);
-+ distance = rep1;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ prob = p + IsRepG2 + state;
-+ IfBit0(prob)
-+ {
-+ UpdateBit0(prob);
-+ distance = rep2;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ distance = rep3;
-+ rep3 = rep2;
-+ }
-+ rep2 = rep1;
-+ }
-+ rep1 = rep0;
-+ rep0 = distance;
-+ }
-+ state = state < kNumLitStates ? 8 : 11;
-+ prob = p + RepLenCoder;
-+ }
-+ {
-+ int numBits, offset;
-+ CProb *probLen = prob + LenChoice;
-+ IfBit0(probLen)
-+ {
-+ UpdateBit0(probLen);
-+ probLen = prob + LenLow + (posState << kLenNumLowBits);
-+ offset = 0;
-+ numBits = kLenNumLowBits;
-+ }
-+ else
-+ {
-+ UpdateBit1(probLen);
-+ probLen = prob + LenChoice2;
-+ IfBit0(probLen)
-+ {
-+ UpdateBit0(probLen);
-+ probLen = prob + LenMid + (posState << kLenNumMidBits);
-+ offset = kLenNumLowSymbols;
-+ numBits = kLenNumMidBits;
-+ }
-+ else
-+ {
-+ UpdateBit1(probLen);
-+ probLen = prob + LenHigh;
-+ offset = kLenNumLowSymbols + kLenNumMidSymbols;
-+ numBits = kLenNumHighBits;
-+ }
-+ }
-+ RangeDecoderBitTreeDecode(probLen, numBits, len);
-+ len += offset;
-+ }
-+
-+ if (state < 4)
-+ {
-+ int posSlot;
-+ state += kNumLitStates;
-+ prob = p + PosSlot +
-+ ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) <<
-+ kNumPosSlotBits);
-+ RangeDecoderBitTreeDecode(prob, kNumPosSlotBits, posSlot);
-+ if (posSlot >= kStartPosModelIndex)
-+ {
-+ int numDirectBits = ((posSlot >> 1) - 1);
-+ rep0 = (2 | ((UInt32)posSlot & 1));
-+ if (posSlot < kEndPosModelIndex)
-+ {
-+ rep0 <<= numDirectBits;
-+ prob = p + SpecPos + rep0 - posSlot - 1;
-+ }
-+ else
-+ {
-+ numDirectBits -= kNumAlignBits;
-+ do
-+ {
-+ RC_NORMALIZE
-+ Range >>= 1;
-+ rep0 <<= 1;
-+ if (Code >= Range)
-+ {
-+ Code -= Range;
-+ rep0 |= 1;
-+ }
-+ }
-+ while (--numDirectBits != 0);
-+ prob = p + Align;
-+ rep0 <<= kNumAlignBits;
-+ numDirectBits = kNumAlignBits;
-+ }
-+ {
-+ int i = 1;
-+ int mi = 1;
-+ do
-+ {
-+ CProb *prob3 = prob + mi;
-+ RC_GET_BIT2(prob3, mi, ; , rep0 |= i);
-+ i <<= 1;
-+ }
-+ while(--numDirectBits != 0);
-+ }
-+ }
-+ else
-+ rep0 = posSlot;
-+ if (++rep0 == (UInt32)(0))
-+ {
-+ /* it's for stream version */
-+ len = kLzmaStreamWasFinishedId;
-+ break;
-+ }
-+ }
-+
-+ len += kMatchMinLen;
-+ #ifdef _LZMA_OUT_READ
-+ if (rep0 > distanceLimit)
-+ #else
-+ if (rep0 > nowPos)
-+ #endif
-+ return LZMA_RESULT_DATA_ERROR;
-+
-+ #ifdef _LZMA_OUT_READ
-+ if (dictionarySize - distanceLimit > (UInt32)len)
-+ distanceLimit += len;
-+ else
-+ distanceLimit = dictionarySize;
-+ #endif
-+
-+ do
-+ {
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 pos = dictionaryPos - rep0;
-+ if (pos >= dictionarySize)
-+ pos += dictionarySize;
-+ previousByte = dictionary[pos];
-+ dictionary[dictionaryPos] = previousByte;
-+ if (++dictionaryPos == dictionarySize)
-+ dictionaryPos = 0;
-+ #else
-+ previousByte = outStream[nowPos - rep0];
-+ #endif
-+ len--;
-+ outStream[nowPos++] = previousByte;
-+ }
-+ while(len != 0 && nowPos < outSize);
-+ }
-+ }
-+ RC_NORMALIZE;
-+
-+ #ifdef _LZMA_OUT_READ
-+ vs->Range = Range;
-+ vs->Code = Code;
-+ vs->DictionaryPos = dictionaryPos;
-+ vs->GlobalPos = globalPos + (UInt32)nowPos;
-+ vs->DistanceLimit = distanceLimit;
-+ vs->Reps[0] = rep0;
-+ vs->Reps[1] = rep1;
-+ vs->Reps[2] = rep2;
-+ vs->Reps[3] = rep3;
-+ vs->State = state;
-+ vs->RemainLen = len;
-+ vs->TempDictionary[0] = tempDictionary[0];
-+ #endif
-+
-+ #ifdef _LZMA_IN_CB
-+ vs->Buffer = Buffer;
-+ vs->BufferLim = BufferLim;
-+ #else
-+ *inSizeProcessed = (SizeT)(Buffer - inStream);
-+ #endif
-+ *outSizeProcessed = nowPos;
-+ return LZMA_RESULT_OK;
-+}
---- /dev/null
-+++ b/arch/arm/boot/compressed/LzmaDecode.h
-@@ -0,0 +1,131 @@
-+/*
-+ LzmaDecode.h
-+ LZMA Decoder interface
-+
-+ LZMA SDK 4.21 Copyright (c) 1999-2005 Igor Pavlov (2005-06-08)
-+ http://www.7-zip.org/
-+
-+ LZMA SDK is licensed under two licenses:
-+ 1) GNU Lesser General Public License (GNU LGPL)
-+ 2) Common Public License (CPL)
-+ It means that you can select one of these two licenses and
-+ follow rules of that license.
-+
-+ SPECIAL EXCEPTION:
-+ Igor Pavlov, as the author of this code, expressly permits you to
-+ statically or dynamically link your code (or bind by name) to the
-+ interfaces of this file without subjecting your linked code to the
-+ terms of the CPL or GNU LGPL. Any modifications or additions
-+ to this file, however, are subject to the LGPL or CPL terms.
-+*/
-+
-+#ifndef __LZMADECODE_H
-+#define __LZMADECODE_H
-+
-+/* #define _LZMA_IN_CB */
-+/* Use callback for input data */
-+
-+/* #define _LZMA_OUT_READ */
-+/* Use read function for output data */
-+
-+/* #define _LZMA_PROB32 */
-+/* It can increase speed on some 32-bit CPUs,
-+ but memory usage will be doubled in that case */
-+
-+/* #define _LZMA_LOC_OPT */
-+/* Enable local speed optimizations inside code */
-+
-+/* #define _LZMA_SYSTEM_SIZE_T */
-+/* Use system's size_t. You can use it to enable 64-bit sizes supporting*/
-+
-+#ifndef UInt32
-+#ifdef _LZMA_UINT32_IS_ULONG
-+#define UInt32 unsigned long
-+#else
-+#define UInt32 unsigned int
-+#endif
-+#endif
-+
-+#ifndef SizeT
-+#ifdef _LZMA_SYSTEM_SIZE_T
-+#include <stddef.h>
-+#define SizeT size_t
-+#else
-+#define SizeT UInt32
-+#endif
-+#endif
-+
-+#ifdef _LZMA_PROB32
-+#define CProb UInt32
-+#else
-+#define CProb unsigned short
-+#endif
-+
-+#define LZMA_RESULT_OK 0
-+#define LZMA_RESULT_DATA_ERROR 1
-+
-+#ifdef _LZMA_IN_CB
-+typedef struct _ILzmaInCallback
-+{
-+ int (*Read)(void *object, const unsigned char **buffer, SizeT *bufferSize);
-+} ILzmaInCallback;
-+#endif
-+
-+#define LZMA_BASE_SIZE 1846
-+#define LZMA_LIT_SIZE 768
-+
-+#define LZMA_PROPERTIES_SIZE 5
-+
-+typedef struct _CLzmaProperties
-+{
-+ int lc;
-+ int lp;
-+ int pb;
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 DictionarySize;
-+ #endif
-+}CLzmaProperties;
-+
-+int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size);
-+
-+#define LzmaGetNumProbs(Properties) (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((Properties)->lc + (Properties)->lp)))
-+
-+#define kLzmaNeedInitId (-2)
-+
-+typedef struct _CLzmaDecoderState
-+{
-+ CLzmaProperties Properties;
-+ CProb *Probs;
-+
-+ #ifdef _LZMA_IN_CB
-+ const unsigned char *Buffer;
-+ const unsigned char *BufferLim;
-+ #endif
-+
-+ #ifdef _LZMA_OUT_READ
-+ unsigned char *Dictionary;
-+ UInt32 Range;
-+ UInt32 Code;
-+ UInt32 DictionaryPos;
-+ UInt32 GlobalPos;
-+ UInt32 DistanceLimit;
-+ UInt32 Reps[4];
-+ int State;
-+ int RemainLen;
-+ unsigned char TempDictionary[4];
-+ #endif
-+} CLzmaDecoderState;
-+
-+#ifdef _LZMA_OUT_READ
-+#define LzmaDecoderInit(vs) { (vs)->RemainLen = kLzmaNeedInitId; }
-+#endif
-+
-+int LzmaDecode(CLzmaDecoderState *vs,
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *inCallback,
-+ #else
-+ const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed,
-+ #endif
-+ unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed);
-+
-+#endif
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
-@@ -5,7 +5,7 @@
- #
-
- HEAD = head.o
--OBJS = misc.o
-+OBJS = misc.o ../../lib/lib1funcs.o
- FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c
-
- #
@@ -63,7 +63,7 @@ endif
SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/
@@ -761,141 +25,160 @@
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
-@@ -202,8 +202,8 @@ typedef unsigned long ulg;
- static uch *inbuf; /* input buffer */
- static uch window[WSIZE]; /* Sliding window buffer */
+@@ -186,36 +186,10 @@ static inline __ptr_t memcpy(__ptr_t __d
+ return __dest;
+ }
+
+-/*
+- * gzip delarations
+- */
+-#define OF(args) args
+-#define STATIC static
+-
+-typedef unsigned char uch;
+-typedef unsigned short ush;
+-typedef unsigned long ulg;
+-
+-#define WSIZE 0x8000 /* Window size must be at least 32k, */
++#define WSIZE 0x20000 /* Window size must be at least 128k, */
+ /* and a power of two */
+-static uch *inbuf; /* input buffer */
+-static uch window[WSIZE]; /* Sliding window buffer */
+-
-static unsigned insize; /* valid bytes in inbuf */
-static unsigned inptr; /* index of next byte to be processed in inbuf */
-+static unsigned insize = 0; /* valid bytes in inbuf */
-+static unsigned inptr = 0; /* index of next byte to be processed in inbuf */
- static unsigned outcnt; /* bytes in output buffer */
+-static unsigned outcnt; /* 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())
++static u8 window[WSIZE]; /* Sliding window buffer */
+
+ /* Diagnostic functions */
+ #ifdef DEBUG
+@@ -234,24 +208,21 @@ static unsigned outcnt; /* bytes in out
+ # define Tracecv(c,x)
+ #endif
+
+-static int fill_inbuf(void);
+-static void flush_window(void);
+ static void error(char *m);
- /* gzip flag byte */
-@@ -242,7 +242,7 @@ extern char input_data[];
+ extern char input_data[];
extern char input_data_end[];
- static uch *output_data;
+-static uch *output_data;
-static ulg output_ptr;
-+static ulg output_ptr = 0;
- static ulg bytes_out;
+-static ulg bytes_out;
++static unsigned long output_ptr;
++static unsigned long bytes_out;
static void error(char *m);
-@@ -259,7 +259,7 @@ static ulg free_mem_end_ptr;
- #define ARCH_HAS_DECOMP_WDOG
+ static void putstr(const char *);
--#include "../../../../lib/inflate.c"
-+/* #include "../../../../lib/inflate.c" */
+ extern int end;
+-static ulg free_mem_ptr;
+-static ulg free_mem_end_ptr;
++static unsigned long free_mem_ptr;
++static unsigned long free_mem_end_ptr;
- /* ===========================================================================
- * Fill the input buffer. This is called only when the buffer is empty
-@@ -277,6 +277,76 @@ int fill_inbuf(void)
- return inbuf[0];
- }
+ #ifdef STANDALONE_DEBUG
+ #define NO_INFLATE_MALLOC
+@@ -259,50 +230,10 @@ static ulg free_mem_end_ptr;
-+#define _LZMA_IN_CB
-+#include "LzmaDecode.h"
-+#include "LzmaDecode.c"
-+
-+void __div0(void)
-+{
-+}
-+
-+static int read_byte(void *object, const unsigned char **buffer, SizeT *bufferSize);
-+
-+/*
-+ * Do the lzma decompression
-+ */
-+static int unlzma(void)
-+{
-+
-+ unsigned int i;
-+ CLzmaDecoderState state;
-+ unsigned int uncompressedSize = 0;
-+
-+ ILzmaInCallback callback;
-+ callback.Read = read_byte;
-+
-+ /* lzma args */
-+ i = get_byte();
-+ state.Properties.lc = i % 9, i = i / 9;
-+ state.Properties.lp = i % 5, state.Properties.pb = i / 5;
-+
-+ /* skip dictionary size */
-+ for (i = 0; i < 4; i++)
-+ get_byte();
-+ /* get uncompressed size */
-+ uncompressedSize = (get_byte()) +
-+ (get_byte() << 8) +
-+ (get_byte() << 16) +
-+ (get_byte() << 24);
-+
-+ /* skip high order bytes */
-+ for (i = 0; i < 4; i++)
-+ get_byte();
-+ /* point it beyond uncompresedSize */
-+ state.Probs = (CProb *) (output_data + uncompressedSize);
-+
-+ /* decompress kernel */
-+ if (LzmaDecode(&state, &callback,
-+ (unsigned char *)output_data, uncompressedSize, &i) == LZMA_RESULT_OK) {
-+ if (i != uncompressedSize)
-+ error("kernel corrupted!\n");
-+ /* copy it back to low_buffer */
-+ bytes_out = i;
-+ output_ptr = i;
-+ return 0;
-+ }
-+ return 1;
-+}
-+
-+static unsigned int icnt = 0;
-+
-+static int read_byte(void *object, const unsigned char **buffer, SizeT *bufferSize)
-+{
-+ static unsigned char val;
-+ *bufferSize = 1;
-+ val = get_byte();
-+ *buffer = &val;
-+ if (icnt++ % (1024 * 10) == 0)
-+ putstr(".");
-+ return LZMA_RESULT_OK;
-+}
-+
-+#if 0
- /* ===========================================================================
- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
- * (Used for the decompressed data only.)
-@@ -299,6 +369,7 @@ void flush_window(void)
- outcnt = 0;
- putstr(".");
- }
-+#endif
+ #define ARCH_HAS_DECOMP_WDOG
+-#include "../../../../lib/inflate.c"
+-
+-/* ===========================================================================
+- * Fill the input buffer. This is called only when the buffer is empty
+- * and at least one byte is really needed.
+- */
+-int fill_inbuf(void)
+-{
+- if (insize != 0)
+- error("ran out of input data");
+-
+- inbuf = input_data;
+- insize = &input_data_end[0] - &input_data[0];
+-
+- inptr = 1;
+- return inbuf[0];
+-}
+-
+-/* ===========================================================================
+- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
+- * (Used for the decompressed data only.)
+- */
+-void flush_window(void)
+-{
+- ulg c = crc;
+- unsigned n;
+- uch *in, *out, ch;
+-
+- 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;
+- putstr(".");
+-}
+-
#ifndef arch_error
#define arch_error(x)
-@@ -328,9 +399,9 @@ decompress_kernel(ulg output_start, ulg
+ #endif
++#include "unlzma.c"
+
+ static void error(char *x)
+ {
+@@ -317,20 +248,16 @@ static void error(char *x)
+
+ #ifndef STANDALONE_DEBUG
+
+-ulg
+-decompress_kernel(ulg output_start, ulg free_mem_ptr_p, ulg free_mem_ptr_end_p,
++unsigned long
++decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p, unsigned long free_mem_ptr_end_p,
+ int arch_id)
+ {
+- output_data = (uch *)output_start; /* Points to kernel start */
+- free_mem_ptr = free_mem_ptr_p;
+- free_mem_end_ptr = free_mem_ptr_end_p;
+ __machine_arch_type = arch_id;
arch_decomp_setup();
- makecrc();
-+ /* makecrc(); */
putstr("Uncompressing Linux...");
- gunzip();
-+ unlzma();
++ output_ptr += unlzma((u8 *) output_start, input_data, window);
putstr(" done, booting the kernel.\n");
return output_ptr;
}
-@@ -342,9 +413,9 @@ int main()
- {
- output_data = output_buffer;
+@@ -340,11 +267,8 @@ char output_buffer[1500*1024];
+ int main()
+ {
+- output_data = output_buffer;
+-
- makecrc();
-+ /* makecrc(); */
putstr("Uncompressing Linux...");
- gunzip();
-+ unlzma();
++ unlzma((u8 *) output_buffer, input_data, window);
putstr("done.\n");
return 0;
}
@@ -909,3 +192,519 @@
+ .incbin "arch/arm/boot/compressed/piggy.lzma"
.globl input_data_end
input_data_end:
+--- /dev/null
++++ b/arch/arm/boot/compressed/unlzma.c
+@@ -0,0 +1,429 @@
++/*
++ * Copyright (c) 2009 Felix Fietkau <nbd@openwrt.org>
++ *
++ * 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,
++ * 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * uncompress.c
++ */
++
++#include <linux/types.h>
++#include <asm/byteorder.h>
++#include "unlzma.h"
++
++struct unlzma_ctx {
++ const u8 *next_in;
++ u8 *next_out;
++ u8 *outbuf;
++
++ /* reader state */
++ u32 code;
++ u32 range;
++ u32 bound;
++
++ /* writer state */
++ u8 previous_byte;
++ ssize_t pos;
++
++ /* cstate */
++ int state;
++ u32 rep0, rep1, rep2, rep3;
++
++ void *workspace;
++} ctx;
++
++static int inbs = 0;
++static inline u8
++rc_read(void)
++{
++#if 0
++ if (unlikely(++inbs > 16 * 1024)) {
++ putstr(".");
++ inbs = 0;
++ }
++#endif
++ return *(ctx.next_in++);
++}
++
++
++static inline void
++rc_get_code(void)
++{
++ ctx.code = (ctx.code << 8) | rc_read();
++}
++
++static inline void
++rc_normalize(void)
++{
++ if (ctx.range < (1 << RC_TOP_BITS)) {
++ ctx.range <<= 8;
++ rc_get_code();
++ }
++}
++
++static inline int
++rc_is_bit_0(u16 *p)
++{
++ rc_normalize();
++ ctx.bound = *p * (ctx.range >> RC_MODEL_TOTAL_BITS);
++ return ctx.code < ctx.bound;
++}
++
++static inline void
++rc_update_bit_0(u16 *p)
++{
++ ctx.range = ctx.bound;
++ *p += ((1 << RC_MODEL_TOTAL_BITS) - *p) >> RC_MOVE_BITS;
++}
++
++static inline void
++rc_update_bit_1(u16 *p)
++{
++ ctx.range -= ctx.bound;
++ ctx.code -= ctx.bound;
++ *p -= *p >> RC_MOVE_BITS;
++}
++
++static inline bool
++rc_get_bit(u16 *p, int *symbol)
++{
++ if (rc_is_bit_0(p)) {
++ rc_update_bit_0(p);
++ *symbol *= 2;
++ return 0;
++ } else {
++ rc_update_bit_1(p);
++ *symbol = *symbol * 2 + 1;
++ return 1;
++ }
++}
++
++static inline int
++rc_direct_bit(void)
++{
++ rc_normalize();
++ ctx.range >>= 1;
++ if (ctx.code >= ctx.range) {
++ ctx.code -= ctx.range;
++ return 1;
++ }
++ return 0;
++}
++
++static inline void
++rc_bit_tree_decode(u16 *p, int num_levels, int *symbol)
++{
++ int i = num_levels;
++
++ *symbol = 1;
++ while (i--)
++ rc_get_bit(p + *symbol, symbol);
++ *symbol -= 1 << num_levels;
++}
++
++static inline u8
++peek_old_byte(u32 offs)
++{
++ u32 pos = ctx.pos - offs;
++ return ctx.outbuf[pos];
++}
++
++static inline void
++write_byte(u8 byte)
++{
++ ctx.previous_byte = byte;
++ *(ctx.next_out++) = byte;
++ ctx.pos++;
++}
++
++
++static inline void
++copy_byte(u32 offs)
++{
++ write_byte(peek_old_byte(offs));
++}
++
++static inline void
++copy_bytes(u32 rep0, int len)
++{
++ do {
++ copy_byte(rep0);
++ len--;
++ } while (len != 0);
++}
++
++static inline void
++process_bit0(u16 *p, int pos_state, u16 *prob,
++ int lc, u32 literal_pos_mask)
++{
++ int mi = 1;
++ rc_update_bit_0(prob);
++ prob = (p + LZMA_LITERAL +
++ (LZMA_LIT_SIZE
++ * (((ctx.pos & literal_pos_mask) << lc)
++ + (ctx.previous_byte >> (8 - lc))))
++ );
++
++ if (ctx.state >= LZMA_NUM_LIT_STATES) {
++ int match_byte = peek_old_byte(ctx.rep0);
++ do {
++ u16 bit;
++ u16 *prob_lit;
++
++ match_byte <<= 1;
++ bit = match_byte & 0x100;
++ prob_lit = prob + 0x100 + bit + mi;
++ if (rc_get_bit(prob_lit, &mi) != !!bit)
++ break;
++ } while (mi < 0x100);
++ }
++ while (mi < 0x100) {
++ u16 *prob_lit = prob + mi;
++ rc_get_bit(prob_lit, &mi);
++ }
++ write_byte(mi);
++ if (ctx.state < 4)
++ ctx.state = 0;
++ else if (ctx.state < 10)
++ ctx.state -= 3;
++ else
++ ctx.state -= 6;
++}
++
++static inline void
++process_bit1(u16 *p, int pos_state, u16 *prob)
++{
++ int offset;
++ u16 *prob_len;
++ int num_bits;
++ int len;
++
++ rc_update_bit_1(prob);
++ prob = p + LZMA_IS_REP + ctx.state;
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++ ctx.rep3 = ctx.rep2;
++ ctx.rep2 = ctx.rep1;
++ ctx.rep1 = ctx.rep0;
++ ctx.state = ctx.state < LZMA_NUM_LIT_STATES ? 0 : 3;
++ prob = p + LZMA_LEN_CODER;
++ } else {
++ rc_update_bit_1(prob);
++ prob = p + LZMA_IS_REP_G0 + ctx.state;
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++ prob = (p + LZMA_IS_REP_0_LONG
++ + (ctx.state <<
++ LZMA_NUM_POS_BITS_MAX) +
++ pos_state);
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++
++ ctx.state = ctx.state < LZMA_NUM_LIT_STATES ?
++ 9 : 11;
++ copy_byte(ctx.rep0);
++ return;
++ } else {
++ rc_update_bit_1(prob);
++ }
++ } else {
++ u32 distance;
++
++ rc_update_bit_1(prob);
++ prob = p + LZMA_IS_REP_G1 + ctx.state;
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++ distance = ctx.rep1;
++ } else {
++ rc_update_bit_1(prob);
++ prob = p + LZMA_IS_REP_G2 + ctx.state;
++ if (rc_is_bit_0(prob)) {
++ rc_update_bit_0(prob);
++ distance = ctx.rep2;
++ } else {
++ rc_update_bit_1(prob);
++ distance = ctx.rep3;
++ ctx.rep3 = ctx.rep2;
++ }
++ ctx.rep2 = ctx.rep1;
++ }
++ ctx.rep1 = ctx.rep0;
++ ctx.rep0 = distance;
++ }
++ ctx.state = ctx.state < LZMA_NUM_LIT_STATES ? 8 : 11;
++ prob = p + LZMA_REP_LEN_CODER;
++ }
++
++ prob_len = prob + LZMA_LEN_CHOICE;
++ if (rc_is_bit_0(prob_len)) {
++ rc_update_bit_0(prob_len);
++ prob_len = (prob + LZMA_LEN_LOW
++ + (pos_state <<
++ LZMA_LEN_NUM_LOW_BITS));
++ offset = 0;
++ num_bits = LZMA_LEN_NUM_LOW_BITS;
++ } else {
++ rc_update_bit_1(prob_len);
++ prob_len = prob + LZMA_LEN_CHOICE_2;
++ if (rc_is_bit_0(prob_len)) {
++ rc_update_bit_0(prob_len);
++ prob_len = (prob + LZMA_LEN_MID
++ + (pos_state <<
++ LZMA_LEN_NUM_MID_BITS));
++ offset = 1 << LZMA_LEN_NUM_LOW_BITS;
++ num_bits = LZMA_LEN_NUM_MID_BITS;
++ } else {
++ rc_update_bit_1(prob_len);
++ prob_len = prob + LZMA_LEN_HIGH;
++ offset = ((1 << LZMA_LEN_NUM_LOW_BITS)
++ + (1 << LZMA_LEN_NUM_MID_BITS));
++ num_bits = LZMA_LEN_NUM_HIGH_BITS;
++ }
++ }
++
++ rc_bit_tree_decode(prob_len, num_bits, &len);
++ len += offset;
++
++ if (ctx.state < 4) {
++ int pos_slot;
++
++ ctx.state += LZMA_NUM_LIT_STATES;
++ prob =
++ p + LZMA_POS_SLOT +
++ ((len <
++ LZMA_NUM_LEN_TO_POS_STATES ? len :
++ LZMA_NUM_LEN_TO_POS_STATES - 1)
++ << LZMA_NUM_POS_SLOT_BITS);
++ rc_bit_tree_decode(prob,
++ LZMA_NUM_POS_SLOT_BITS,
++ &pos_slot);
++ if (pos_slot >= LZMA_START_POS_MODEL_INDEX) {
++ int i, mi;
++ num_bits = (pos_slot >> 1) - 1;
++ ctx.rep0 = 2 | (pos_slot & 1);
++ if (pos_slot < LZMA_END_POS_MODEL_INDEX) {
++ ctx.rep0 <<= num_bits;
++ prob = p + LZMA_SPEC_POS +
++ ctx.rep0 - pos_slot - 1;
++ } else {
++ num_bits -= LZMA_NUM_ALIGN_BITS;
++ while (num_bits--)
++ ctx.rep0 = (ctx.rep0 << 1) |
++ rc_direct_bit();
++ prob = p + LZMA_ALIGN;
++ ctx.rep0 <<= LZMA_NUM_ALIGN_BITS;
++ num_bits = LZMA_NUM_ALIGN_BITS;
++ }
++ i = 1;
++ mi = 1;
++ while (num_bits--) {
++ if (rc_get_bit(prob + mi, &mi))
++ ctx.rep0 |= i;
++ i <<= 1;
++ }
++ } else
++ ctx.rep0 = pos_slot;
++ if (++(ctx.rep0) == 0)
++ return;
++ }
++
++ len += LZMA_MATCH_MIN_LEN;
++
++ copy_bytes(ctx.rep0, len);
++}
++
++
++static int
++do_unlzma(void)
++{
++ u8 hdr_buf[sizeof(struct lzma_header)];
++ struct lzma_header *header = (struct lzma_header *)hdr_buf;
++ u32 pos_state_mask;
++ u32 literal_pos_mask;
++ int lc, pb, lp;
++ int num_probs;
++ int i, mi;
++ u16 *p;
++
++ for (i = 0; i < sizeof(struct lzma_header); i++) {
++ hdr_buf[i] = rc_read();
++ }
++
++ ctx.pos = 0;
++ ctx.state = 0;
++ ctx.rep0 = ctx.rep1 = ctx.rep2 = ctx.rep3 = 1;
++
++ ctx.previous_byte = 0;
++ ctx.code = 0;
++ ctx.range = 0xFFFFFFFF;
++
++ if (header->pos >= (9 * 5 * 5))
++ return -1;
++
++ mi = 0;
++ lc = header->pos;
++ while (lc >= 9) {
++ mi++;
++ lc -= 9;
++ }
++ pb = 0;
++ lp = mi;
++ while (lp >= 5) {
++ pb++;
++ lp -= 5;
++ }
++ pos_state_mask = (1 << pb) - 1;
++ literal_pos_mask = (1 << lp) - 1;
++
++ p = (u16 *) ctx.workspace;
++ if (!p)
++ return -1;
++
++ num_probs = LZMA_LITERAL + (LZMA_LIT_SIZE << (lc + lp));
++ for (i = 0; i < num_probs; i++)
++ p[i] = (1 << RC_MODEL_TOTAL_BITS) >> 1;
++
++ for (i = 0; i < 5; i++)
++ rc_get_code();
++
++ while (1) {
++ int pos_state = ctx.pos & pos_state_mask;
++ u16 *prob = p + LZMA_IS_MATCH +
++ (ctx.state << LZMA_NUM_POS_BITS_MAX) + pos_state;
++ if (rc_is_bit_0(prob))
++ process_bit0(p, pos_state, prob,
++ lc, literal_pos_mask);
++ else {
++ process_bit1(p, pos_state, prob);
++ if (ctx.rep0 == 0)
++ break;
++ }
++ }
++
++ return ctx.pos;
++}
++
++
++static int unlzma(unsigned char *dest, const unsigned char *src, unsigned char *workspace)
++{
++ memset(&ctx, 0, sizeof(ctx));
++ ctx.outbuf = dest;
++ ctx.next_in = src;
++ ctx.next_out = dest;
++ ctx.workspace = workspace;
++
++ return do_unlzma();
++}
++
++
+--- /dev/null
++++ b/arch/arm/boot/compressed/unlzma.h
+@@ -0,0 +1,81 @@
++/* LZMA uncompresion module for pcomp
++ * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
++ *
++ * Based on:
++ * Initial Linux kernel adaptation
++ * Copyright (C) 2006 Alain < alain@knaff.lu >
++ *
++ * Based on small lzma deflate implementation/Small range coder
++ * implementation for lzma.
++ * Copyright (C) 2006 Aurelien Jacobs < aurel@gnuage.org >
++ *
++ * Based on LzmaDecode.c from the LZMA SDK 4.22 (http://www.7-zip.org/)
++ * Copyright (C) 1999-2005 Igor Pavlov
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ */
++#ifndef __UNLZMA_H
++#define __UNLZMA_H
++
++struct lzma_header {
++ __u8 pos;
++ __le32 dict_size;
++ __le64 uncompr_size;
++} __attribute__ ((packed));
++
++
++#define RC_TOP_BITS 24
++#define RC_MOVE_BITS 5
++#define RC_MODEL_TOTAL_BITS 11
++
++#define LZMA_BASE_SIZE 1846
++#define LZMA_LIT_SIZE 768
++
++#define LZMA_NUM_POS_BITS_MAX 4
++
++#define LZMA_LEN_NUM_LOW_BITS 3
++#define LZMA_LEN_NUM_MID_BITS 3
++#define LZMA_LEN_NUM_HIGH_BITS 8
++
++#define LZMA_LEN_CHOICE 0
++#define LZMA_LEN_CHOICE_2 (LZMA_LEN_CHOICE + 1)
++#define LZMA_LEN_LOW (LZMA_LEN_CHOICE_2 + 1)
++#define LZMA_LEN_MID (LZMA_LEN_LOW \
++ + (1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_LOW_BITS)))
++#define LZMA_LEN_HIGH (LZMA_LEN_MID \
++ +(1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_MID_BITS)))
++#define LZMA_NUM_LEN_PROBS (LZMA_LEN_HIGH + (1 << LZMA_LEN_NUM_HIGH_BITS))
++
++#define LZMA_NUM_STATES 12
++#define LZMA_NUM_LIT_STATES 7
++
++#define LZMA_START_POS_MODEL_INDEX 4
++#define LZMA_END_POS_MODEL_INDEX 14
++#define LZMA_NUM_FULL_DISTANCES (1 << (LZMA_END_POS_MODEL_INDEX >> 1))
++
++#define LZMA_NUM_POS_SLOT_BITS 6
++#define LZMA_NUM_LEN_TO_POS_STATES 4
++
++#define LZMA_NUM_ALIGN_BITS 4
++
++#define LZMA_MATCH_MIN_LEN 2
++
++#define LZMA_IS_MATCH 0
++#define LZMA_IS_REP (LZMA_IS_MATCH + (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
++#define LZMA_IS_REP_G0 (LZMA_IS_REP + LZMA_NUM_STATES)
++#define LZMA_IS_REP_G1 (LZMA_IS_REP_G0 + LZMA_NUM_STATES)
++#define LZMA_IS_REP_G2 (LZMA_IS_REP_G1 + LZMA_NUM_STATES)
++#define LZMA_IS_REP_0_LONG (LZMA_IS_REP_G2 + LZMA_NUM_STATES)
++#define LZMA_POS_SLOT (LZMA_IS_REP_0_LONG \
++ + (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
++#define LZMA_SPEC_POS (LZMA_POS_SLOT \
++ +(LZMA_NUM_LEN_TO_POS_STATES << LZMA_NUM_POS_SLOT_BITS))
++#define LZMA_ALIGN (LZMA_SPEC_POS \
++ + LZMA_NUM_FULL_DISTANCES - LZMA_END_POS_MODEL_INDEX)
++#define LZMA_LEN_CODER (LZMA_ALIGN + (1 << LZMA_NUM_ALIGN_BITS))
++#define LZMA_REP_LEN_CODER (LZMA_LEN_CODER + LZMA_NUM_LEN_PROBS)
++#define LZMA_LITERAL (LZMA_REP_LEN_CODER + LZMA_NUM_LEN_PROBS)
++
++#endif
diff --git a/target/linux/generic-2.6/patches-2.6.30/998-openwrt_lzma_options.patch b/target/linux/generic-2.6/patches-2.6.30/998-openwrt_lzma_options.patch
index 8e05052ea4..e7b6b3d4c0 100644
--- a/target/linux/generic-2.6/patches-2.6.30/998-openwrt_lzma_options.patch
+++ b/target/linux/generic-2.6/patches-2.6.30/998-openwrt_lzma_options.patch
@@ -5,4 +5,4 @@
quiet_cmd_lzma = LZMA $@
-cmd_lzma = (lzma -9 -c $< && $(size_append) $<) >$@ || (rm -f $@ ; false)
-+cmd_lzma = lzma e $< $@ -lc1 -lp2 -pb2
++cmd_lzma = lzma e $< $@ -lc1 -lp2 -pb2 -eos
--
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