1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 *
4 * based on: cmd_jffs2.c
5 *
6 * Add support for a CRAMFS located in RAM
7 */
8
9
10 /*
11 * CRAMFS support
12 */
13 #include <common.h>
14 #include <command.h>
15 #include <env.h>
16 #include <image.h>
17 #include <malloc.h>
18 #include <mapmem.h>
19 #include <linux/list.h>
20 #include <linux/ctype.h>
21 #include <jffs2/jffs2.h>
22 #include <jffs2/load_kernel.h>
23 #include <cramfs/cramfs_fs.h>
24 #include <asm/io.h>
25
26 /* enable/disable debugging messages */
27 #define DEBUG_CRAMFS
28 #undef DEBUG_CRAMFS
29
30 #ifdef DEBUG_CRAMFS
31 # define DEBUGF(fmt, args...) printf(fmt ,##args)
32 #else
33 # define DEBUGF(fmt, args...)
34 #endif
35
36 #include <flash.h>
37
38 #ifndef CONFIG_MTD_NOR_FLASH
39 # define OFFSET_ADJUSTMENT 0
40 #else
41 # define OFFSET_ADJUSTMENT (flash_info[id.num].start[0])
42 #endif
43
44 #ifndef CONFIG_FS_JFFS2
45 #include <linux/stat.h>
mkmodestr(unsigned long mode,char * str)46 char *mkmodestr(unsigned long mode, char *str)
47 {
48 static const char *l = "xwr";
49 int mask = 1, i;
50 char c;
51
52 switch (mode & S_IFMT) {
53 case S_IFDIR: str[0] = 'd'; break;
54 case S_IFBLK: str[0] = 'b'; break;
55 case S_IFCHR: str[0] = 'c'; break;
56 case S_IFIFO: str[0] = 'f'; break;
57 case S_IFLNK: str[0] = 'l'; break;
58 case S_IFSOCK: str[0] = 's'; break;
59 case S_IFREG: str[0] = '-'; break;
60 default: str[0] = '?';
61 }
62
63 for(i = 0; i < 9; i++) {
64 c = l[i%3];
65 str[9-i] = (mode & mask)?c:'-';
66 mask = mask<<1;
67 }
68
69 if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S';
70 if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S';
71 if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T';
72 str[10] = '\0';
73 return str;
74 }
75 #endif /* CONFIG_FS_JFFS2 */
76
77 extern int cramfs_check (struct part_info *info);
78 extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
79 extern int cramfs_ls (struct part_info *info, char *filename);
80 extern int cramfs_info (struct part_info *info);
81
82 /***************************************************/
83 /* U-Boot commands */
84 /***************************************************/
85
86 /**
87 * Routine implementing fsload u-boot command. This routine tries to load
88 * a requested file from cramfs filesystem at location 'cramfsaddr'.
89 * cramfsaddr is an evironment variable.
90 *
91 * @param cmdtp command internal data
92 * @param flag command flag
93 * @param argc number of arguments supplied to the command
94 * @param argv arguments list
95 * @return 0 on success, 1 otherwise
96 */
do_cramfs_load(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])97 int do_cramfs_load(struct cmd_tbl *cmdtp, int flag, int argc,
98 char *const argv[])
99 {
100 char *filename;
101 int size;
102 ulong offset = image_load_addr;
103 char *offset_virt;
104
105 struct part_info part;
106 struct mtd_device dev;
107 struct mtdids id;
108
109 ulong addr;
110 addr = simple_strtoul(env_get("cramfsaddr"), NULL, 16);
111
112 /* hack! */
113 /* cramfs_* only supports NOR flash chips */
114 /* fake the device type */
115 id.type = MTD_DEV_TYPE_NOR;
116 id.num = 0;
117 dev.id = &id;
118 part.dev = &dev;
119 /* fake the address offset */
120 part.offset = (u64)(uintptr_t) map_sysmem(addr - OFFSET_ADJUSTMENT, 0);
121
122 /* pre-set Boot file name */
123 filename = env_get("bootfile");
124 if (!filename)
125 filename = "uImage";
126
127 if (argc == 2) {
128 filename = argv[1];
129 }
130 if (argc == 3) {
131 offset = simple_strtoul(argv[1], NULL, 0);
132 image_load_addr = offset;
133 filename = argv[2];
134 }
135
136 offset_virt = map_sysmem(offset, 0);
137 size = 0;
138 if (cramfs_check(&part))
139 size = cramfs_load (offset_virt, &part, filename);
140
141 if (size > 0) {
142 printf("### CRAMFS load complete: %d bytes loaded to 0x%lx\n",
143 size, offset);
144 env_set_hex("filesize", size);
145 } else {
146 printf("### CRAMFS LOAD ERROR<%x> for %s!\n", size, filename);
147 }
148
149 unmap_sysmem(offset_virt);
150 unmap_sysmem((void *)(uintptr_t)part.offset);
151
152 return !(size > 0);
153 }
154
155 /**
156 * Routine implementing u-boot ls command which lists content of a given
157 * directory at location 'cramfsaddr'.
158 * cramfsaddr is an evironment variable.
159 *
160 * @param cmdtp command internal data
161 * @param flag command flag
162 * @param argc number of arguments supplied to the command
163 * @param argv arguments list
164 * @return 0 on success, 1 otherwise
165 */
do_cramfs_ls(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])166 int do_cramfs_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
167 {
168 char *filename = "/";
169 int ret;
170 struct part_info part;
171 struct mtd_device dev;
172 struct mtdids id;
173
174 ulong addr;
175 addr = simple_strtoul(env_get("cramfsaddr"), NULL, 16);
176
177 /* hack! */
178 /* cramfs_* only supports NOR flash chips */
179 /* fake the device type */
180 id.type = MTD_DEV_TYPE_NOR;
181 id.num = 0;
182 dev.id = &id;
183 part.dev = &dev;
184 /* fake the address offset */
185 part.offset = (u64)(uintptr_t) map_sysmem(addr - OFFSET_ADJUSTMENT, 0);
186
187 if (argc == 2)
188 filename = argv[1];
189
190 ret = 0;
191 if (cramfs_check(&part))
192 ret = cramfs_ls (&part, filename);
193 unmap_sysmem((void *)(uintptr_t)part.offset);
194
195 return ret ? 0 : 1;
196 }
197
198 /* command line only */
199
200 /***************************************************/
201 U_BOOT_CMD(
202 cramfsload, 3, 0, do_cramfs_load,
203 "load binary file from a filesystem image",
204 "[ off ] [ filename ]\n"
205 " - load binary file from address 'cramfsaddr'\n"
206 " with offset 'off'\n"
207 );
208 U_BOOT_CMD(
209 cramfsls, 2, 1, do_cramfs_ls,
210 "list files in a directory (default /)",
211 "[ directory ]\n"
212 " - list files in a directory.\n"
213 );
214