openwrt-xburst/target/linux/generic-2.6/patches-2.6.28/960-arm_lzma_loader.patch

--- 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