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
37#ifndef CONFIG_MTD_NOR_FLASH
38# define OFFSET_ADJUSTMENT	0
39#else
40#include <flash.h>
41# define OFFSET_ADJUSTMENT	(flash_info[id.num].start[0])
42#endif
43
44#ifndef CONFIG_FS_JFFS2
45#include <linux/stat.h>
46char *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
77extern int cramfs_check (struct part_info *info);
78extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
79extern int cramfs_ls (struct part_info *info, char *filename);
80extern 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 */
97int 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 = hextoul(env_get("cramfsaddr"), NULL);
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 */
166int 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 = hextoul(env_get("cramfsaddr"), NULL);
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/***************************************************/
201U_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);
208U_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