2 * (C) Copyright 2007 Michal Simek
4 * Michal SIMEK <monstr@monstr.eu>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #if defined(CONFIG_CMD_JFFS2)
31 #include <asm/byteorder.h>
32 #include <linux/stat.h>
33 #include <jffs2/jffs2.h>
34 #include <jffs2/load_kernel.h>
38 /* ROMFS superblock */
55 extern flash_info_t flash_info[];
56 #define PART_OFFSET(x) (x->offset + flash_info[x->dev->id->num].start[0])
57 #define ALIGN(x) (((x) & 0xfffffff0))
58 #define HEADERSIZE(name) (0x20 + ALIGN(strlen(name)))
60 static unsigned long romfs_resolve (unsigned long begin, unsigned long offset,
61 unsigned long size, int raw, char *filename)
63 unsigned long inodeoffset = 0, nextoffset;
64 struct romfs_inode *inode;
66 printf ("ROMFS_resolve: begin 0x%x, offset 0x%x, size 0x%x, raw 0x%x, \
67 filename %s\n", begin, offset, size, raw, filename);
70 while (inodeoffset < size) {
71 inode = (struct romfs_inode *)(begin + offset + inodeoffset);
73 nextoffset = ALIGN (inode->next);
75 printf("inode 0x%x, name %s - len 0x%x, next inode 0x%x, \
76 compare names 0x%x\n",
77 inode, inode->name, strlen (inode->name), nextoffset,
78 strncmp (filename, inode->name, strlen (filename)));
80 if (!strncmp (filename, inode->name, strlen (inode->name))) {
81 char *p = strtok (NULL, "/");
82 if (raw && (p == NULL || *p == '\0')) {
83 return offset + inodeoffset;
85 return romfs_resolve (begin,
86 inodeoffset + HEADERSIZE (inode->name),
89 inodeoffset = nextoffset;
92 printf ("can't find corresponding entry\n");
96 int romfs_load (char *loadoffset, struct part_info *info, char *filename)
98 struct romfs_inode *inode;
99 struct romfs_super *sb;
102 sb = (struct romfs_super *) PART_OFFSET (info);
104 unsigned long offset;
106 offset = romfs_resolve (PART_OFFSET (info), HEADERSIZE (sb->name),
107 sb->size, 1, strtok (filename, "/"));
111 inode = (struct romfs_inode *)(PART_OFFSET (info) + offset);
112 data = (char *)((int)inode + HEADERSIZE (inode->name));
115 *loadoffset++ = *data++;
120 static int romfs_list_inode (struct part_info *info, unsigned long offset)
122 struct romfs_inode *inode =
123 (struct romfs_inode *)(PART_OFFSET (info) + offset);
124 struct romfs_inode *hardlink = NULL;
128 * mapping spec.info means
129 * 0 hard link link destination [file header]
130 * 1 directory first file's header
131 * 2 regular file unused, must be zero [MBZ]
132 * 3 symbolic link unused, MBZ (file data is the link content)
133 * 4 block device 16/16 bits major/minor number
134 * 5 char device - " -
135 * 6 socket unused, MBZ
138 char attributes[] = "hdflbcsp";
139 str[0] = attributes[inode->next & 0x7];
140 str[1] = (inode->next & 0x8) ? 'x' : '-';
143 if ((str[0] == 'b') || (str[0] == 'c')) {
145 printf (" %s %3d,%3d %12s 0x%08x 0x%08x", str,
146 (inode->spec & 0xffff0000) >> 16,
147 inode->spec & 0x0000ffff, inode->name, inode,
150 printf (" %s %3d,%3d %12s", str,
151 (inode->spec & 0xffff0000) >> 16,
152 inode->spec & 0x0000ffff);
156 printf (" %s %7d %12s 0x%08x 0x%08x", str, inode->size,
157 inode->name, inode, inode->spec);
159 printf (" %s %7d %12s", str, inode->size, inode->name);
162 data = (char *)((int)inode + HEADERSIZE (inode->name));
167 hardlink = (struct romfs_inode *)(PART_OFFSET (info) +
170 puts (hardlink->name);
174 return ALIGN (inode->next);
177 int romfs_ls (struct part_info *info, char *filename)
179 struct romfs_inode *inode;
180 unsigned long inodeoffset = 0, nextoffset;
181 unsigned long offset, size;
182 struct romfs_super *sb;
183 sb = (struct romfs_super *)PART_OFFSET (info);
185 if (strlen (filename) == 0 || !strcmp (filename, "/")) {
186 offset = HEADERSIZE (sb->name);
189 offset = romfs_resolve (PART_OFFSET (info),
190 HEADERSIZE (sb->name), sb->size, 1,
191 strtok (filename, "/"));
196 inode = (struct romfs_inode *)(PART_OFFSET (info) + offset);
197 if ((inode->next & 0x7) != 1) {
198 return (romfs_list_inode (info, offset) > 0);
202 offset = offset + HEADERSIZE (inode->name);
205 inodeoffset = offset + inodeoffset;
206 while (inodeoffset < size) {
207 nextoffset = romfs_list_inode (info, inodeoffset);
210 inodeoffset = nextoffset;
215 int romfs_info (struct part_info *info)
217 struct romfs_super *sb;
218 sb = (struct romfs_super *)PART_OFFSET (info);
220 printf ("name: \t\t%s, len %d B\n", sb->name, strlen (sb->name));
221 printf ("size of SB:\t%d B\n", HEADERSIZE (sb->name));
222 printf ("full size:\t%d B\n", sb->size);
223 printf ("checksum:\t0x%x\n", sb->checksum);
227 int romfs_check (struct part_info *info)
229 struct romfs_super *sb;
230 if (info->dev->id->type != MTD_DEV_TYPE_NOR)
233 sb = (struct romfs_super *)PART_OFFSET (info);
234 if ((sb->word0 != 0x2D726F6D) || (sb->word1 != 0x3166732D)) {