diff options
Diffstat (limited to 'meta/packages/mtd/mtd-utils/add_lzo.patch')
-rw-r--r-- | meta/packages/mtd/mtd-utils/add_lzo.patch | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/meta/packages/mtd/mtd-utils/add_lzo.patch b/meta/packages/mtd/mtd-utils/add_lzo.patch deleted file mode 100644 index 3421571372..0000000000 --- a/meta/packages/mtd/mtd-utils/add_lzo.patch +++ /dev/null | |||
@@ -1,222 +0,0 @@ | |||
1 | Subject: [mtd-utils patch 1/2] Add lzo support to mtd-utils | ||
2 | |||
3 | Add LZO support to mtd-utils to generate LZO compressed jffs2 images | ||
4 | |||
5 | Unlike the kernel version, the standard lzo userspace library is used | ||
6 | along with lzo1x_999_compress rather than the lzo1x_1_compress version | ||
7 | since better compression ratios can be obtained (at no significant cost | ||
8 | to decompression time). | ||
9 | |||
10 | Signed-off-by: Richard Purdie <rpurdie@openedhand.com> | ||
11 | |||
12 | --- | ||
13 | Makefile | 3 - | ||
14 | compr.c | 6 ++ | ||
15 | compr.h | 6 ++ | ||
16 | compr_lzo.c | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++ | ||
17 | include/linux/jffs2.h | 1 | ||
18 | 5 files changed, 135 insertions(+), 1 deletion(-) | ||
19 | |||
20 | Index: git/Makefile | ||
21 | =================================================================== | ||
22 | --- git.orig/Makefile 2007-03-01 11:57:58.000000000 +0000 | ||
23 | +++ git/Makefile 2007-03-01 11:58:01.000000000 +0000 | ||
24 | @@ -58,8 +58,9 @@ $(BUILDDIR)/mkfs.jffs2: $(BUILDDIR)/crc3 | ||
25 | $(BUILDDIR)/compr_rtime.o \ | ||
26 | $(BUILDDIR)/mkfs.jffs2.o \ | ||
27 | $(BUILDDIR)/compr_zlib.o \ | ||
28 | + $(BUILDDIR)/compr_lzo.o \ | ||
29 | $(BUILDDIR)/compr.o | ||
30 | - $(CC) $(LDFLAGS) -o $@ $^ -lz | ||
31 | + $(CC) $(LDFLAGS) -o $@ $^ -lz -llzo | ||
32 | |||
33 | $(BUILDDIR)/flash_eraseall: $(BUILDDIR)/crc32.o $(BUILDDIR)/flash_eraseall.o | ||
34 | $(CC) $(LDFLAGS) -o $@ $^ | ||
35 | Index: git/compr.c | ||
36 | =================================================================== | ||
37 | --- git.orig/compr.c 2007-03-01 11:57:58.000000000 +0000 | ||
38 | +++ git/compr.c 2007-03-01 11:58:01.000000000 +0000 | ||
39 | @@ -474,6 +474,9 @@ int jffs2_compressors_init(void) | ||
40 | #ifdef CONFIG_JFFS2_RTIME | ||
41 | jffs2_rtime_init(); | ||
42 | #endif | ||
43 | +#ifdef CONFIG_JFFS2_LZO | ||
44 | + jffs2_lzo_init(); | ||
45 | +#endif | ||
46 | return 0; | ||
47 | } | ||
48 | |||
49 | @@ -485,5 +488,8 @@ int jffs2_compressors_exit(void) | ||
50 | #ifdef CONFIG_JFFS2_ZLIB | ||
51 | jffs2_zlib_exit(); | ||
52 | #endif | ||
53 | +#ifdef CONFIG_JFFS2_LZO | ||
54 | + jffs2_lzo_exit(); | ||
55 | +#endif | ||
56 | return 0; | ||
57 | } | ||
58 | Index: git/compr.h | ||
59 | =================================================================== | ||
60 | --- git.orig/compr.h 2007-03-01 11:57:58.000000000 +0000 | ||
61 | +++ git/compr.h 2007-03-01 11:58:01.000000000 +0000 | ||
62 | @@ -21,11 +21,13 @@ | ||
63 | |||
64 | #define CONFIG_JFFS2_ZLIB | ||
65 | #define CONFIG_JFFS2_RTIME | ||
66 | +#define CONFIG_JFFS2_LZO | ||
67 | |||
68 | #define JFFS2_RUBINMIPS_PRIORITY 10 | ||
69 | #define JFFS2_DYNRUBIN_PRIORITY 20 | ||
70 | #define JFFS2_RTIME_PRIORITY 50 | ||
71 | #define JFFS2_ZLIB_PRIORITY 60 | ||
72 | +#define JFFS2_LZO_PRIORITY 80 | ||
73 | |||
74 | #define JFFS2_COMPR_MODE_NONE 0 | ||
75 | #define JFFS2_COMPR_MODE_PRIORITY 1 | ||
76 | @@ -111,5 +113,9 @@ void jffs2_zlib_exit(void); | ||
77 | int jffs2_rtime_init(void); | ||
78 | void jffs2_rtime_exit(void); | ||
79 | #endif | ||
80 | +#ifdef CONFIG_JFFS2_LZO | ||
81 | +int jffs2_lzo_init(void); | ||
82 | +void jffs2_lzo_exit(void); | ||
83 | +#endif | ||
84 | |||
85 | #endif /* __JFFS2_COMPR_H__ */ | ||
86 | Index: git/compr_lzo.c | ||
87 | =================================================================== | ||
88 | --- /dev/null 1970-01-01 00:00:00.000000000 +0000 | ||
89 | +++ git/compr_lzo.c 2007-03-01 11:58:01.000000000 +0000 | ||
90 | @@ -0,0 +1,120 @@ | ||
91 | +/* | ||
92 | + * JFFS2 LZO Compression Interface. | ||
93 | + * | ||
94 | + * Copyright (C) 2007 Nokia Corporation. All rights reserved. | ||
95 | + * | ||
96 | + * Author: Richard Purdie <rpurdie@openedhand.com> | ||
97 | + * | ||
98 | + * This program is free software; you can redistribute it and/or | ||
99 | + * modify it under the terms of the GNU General Public License | ||
100 | + * version 2 as published by the Free Software Foundation. | ||
101 | + * | ||
102 | + * This program is distributed in the hope that it will be useful, but | ||
103 | + * WITHOUT ANY WARRANTY; without even the implied warranty of | ||
104 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
105 | + * General Public License for more details. | ||
106 | + * | ||
107 | + * You should have received a copy of the GNU General Public License | ||
108 | + * along with this program; if not, write to the Free Software | ||
109 | + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | ||
110 | + * 02110-1301 USA | ||
111 | + * | ||
112 | + */ | ||
113 | + | ||
114 | +#include <stdint.h> | ||
115 | +#include <stdio.h> | ||
116 | +#include <string.h> | ||
117 | +#include <asm/types.h> | ||
118 | +#include <linux/jffs2.h> | ||
119 | +#include <lzo1x.h> | ||
120 | +#include "compr.h" | ||
121 | + | ||
122 | +extern int page_size; | ||
123 | + | ||
124 | +static void *lzo_mem; | ||
125 | +static void *lzo_compress_buf; | ||
126 | + | ||
127 | +/* | ||
128 | + * Note about LZO compression. | ||
129 | + * | ||
130 | + * We want to use the _999_ compression routine which gives better compression | ||
131 | + * rates at the expense of time. Decompression time is unaffected. We might as | ||
132 | + * well use the standard lzo library routines for this but they will overflow | ||
133 | + * the destination buffer since they don't check the destination size. | ||
134 | + * | ||
135 | + * We therefore compress to a temporary buffer and copy if it will fit. | ||
136 | + * | ||
137 | + */ | ||
138 | +static int jffs2_lzo_cmpr(unsigned char *data_in, unsigned char *cpage_out, | ||
139 | + uint32_t *sourcelen, uint32_t *dstlen, void *model) | ||
140 | +{ | ||
141 | + uint32_t compress_size; | ||
142 | + int ret; | ||
143 | + | ||
144 | + ret = lzo1x_999_compress(data_in, *sourcelen, lzo_compress_buf, &compress_size, lzo_mem); | ||
145 | + | ||
146 | + if (ret != LZO_E_OK) | ||
147 | + return -1; | ||
148 | + | ||
149 | + if (compress_size > *dstlen) | ||
150 | + return -1; | ||
151 | + | ||
152 | + memcpy(cpage_out, lzo_compress_buf, compress_size); | ||
153 | + *dstlen = compress_size; | ||
154 | + | ||
155 | + return 0; | ||
156 | +} | ||
157 | + | ||
158 | +static int jffs2_lzo_decompress(unsigned char *data_in, unsigned char *cpage_out, | ||
159 | + uint32_t srclen, uint32_t destlen, void *model) | ||
160 | +{ | ||
161 | + int ret; | ||
162 | + uint32_t dl; | ||
163 | + | ||
164 | + ret = lzo1x_decompress_safe(data_in,srclen,cpage_out,&dl,NULL); | ||
165 | + | ||
166 | + if (ret != LZO_E_OK || dl != destlen) | ||
167 | + return -1; | ||
168 | + | ||
169 | + return 0; | ||
170 | +} | ||
171 | + | ||
172 | +static struct jffs2_compressor jffs2_lzo_comp = { | ||
173 | + .priority = JFFS2_LZO_PRIORITY, | ||
174 | + .name = "lzo", | ||
175 | + .compr = JFFS2_COMPR_LZO, | ||
176 | + .compress = &jffs2_lzo_cmpr, | ||
177 | + .decompress = &jffs2_lzo_decompress, | ||
178 | + .disabled = 0, | ||
179 | +}; | ||
180 | + | ||
181 | +int jffs2_lzo_init(void) | ||
182 | +{ | ||
183 | + int ret; | ||
184 | + | ||
185 | + lzo_mem = malloc(LZO1X_999_MEM_COMPRESS); | ||
186 | + if (!lzo_mem) | ||
187 | + return -1; | ||
188 | + | ||
189 | + /* Worse case LZO compression size from their FAQ */ | ||
190 | + lzo_compress_buf = malloc(page_size + (page_size / 64) + 16 + 3); | ||
191 | + if (!lzo_compress_buf) { | ||
192 | + free(lzo_mem); | ||
193 | + return -1; | ||
194 | + } | ||
195 | + | ||
196 | + ret = jffs2_register_compressor(&jffs2_lzo_comp); | ||
197 | + if (ret < 0) { | ||
198 | + free(lzo_compress_buf); | ||
199 | + free(lzo_mem); | ||
200 | + } | ||
201 | + | ||
202 | + return ret; | ||
203 | +} | ||
204 | + | ||
205 | +void jffs2_lzo_exit(void) | ||
206 | +{ | ||
207 | + jffs2_unregister_compressor(&jffs2_lzo_comp); | ||
208 | + free(lzo_compress_buf); | ||
209 | + free(lzo_mem); | ||
210 | +} | ||
211 | Index: git/include/linux/jffs2.h | ||
212 | =================================================================== | ||
213 | --- git.orig/include/linux/jffs2.h 2007-03-01 11:57:58.000000000 +0000 | ||
214 | +++ git/include/linux/jffs2.h 2007-03-01 11:58:01.000000000 +0000 | ||
215 | @@ -46,6 +46,7 @@ | ||
216 | #define JFFS2_COMPR_COPY 0x04 | ||
217 | #define JFFS2_COMPR_DYNRUBIN 0x05 | ||
218 | #define JFFS2_COMPR_ZLIB 0x06 | ||
219 | +#define JFFS2_COMPR_LZO 0x07 | ||
220 | /* Compatibility flags. */ | ||
221 | #define JFFS2_COMPAT_MASK 0xc000 /* What do to if an unknown nodetype is found */ | ||
222 | #define JFFS2_NODE_ACCURATE 0x2000 | ||