diff options
Diffstat (limited to 'cmd/cramfs.c')
| -rw-r--r-- | cmd/cramfs.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/cmd/cramfs.c b/cmd/cramfs.c new file mode 100644 index 0000000..1d31326 --- /dev/null +++ b/cmd/cramfs.c @@ -0,0 +1,207 @@ +/* + * SPDX-License-Identifier: GPL-2.0+ + * + * based on: cmd_jffs2.c + * + * Add support for a CRAMFS located in RAM + */ + + +/* + * CRAMFS support + */ +#include <common.h> +#include <command.h> +#include <malloc.h> +#include <linux/list.h> +#include <linux/ctype.h> +#include <jffs2/jffs2.h> +#include <jffs2/load_kernel.h> +#include <cramfs/cramfs_fs.h> + +/* enable/disable debugging messages */ +#define DEBUG_CRAMFS +#undef DEBUG_CRAMFS + +#ifdef DEBUG_CRAMFS +# define DEBUGF(fmt, args...) printf(fmt ,##args) +#else +# define DEBUGF(fmt, args...) +#endif + +#ifdef CONFIG_CRAMFS_CMDLINE +#include <flash.h> + +#ifdef CONFIG_SYS_NO_FLASH +# define OFFSET_ADJUSTMENT 0 +#else +# define OFFSET_ADJUSTMENT (flash_info[id.num].start[0]) +#endif + +#ifndef CONFIG_CMD_JFFS2 +#include <linux/stat.h> +char *mkmodestr(unsigned long mode, char *str) +{ + static const char *l = "xwr"; + int mask = 1, i; + char c; + + switch (mode & S_IFMT) { + case S_IFDIR: str[0] = 'd'; break; + case S_IFBLK: str[0] = 'b'; break; + case S_IFCHR: str[0] = 'c'; break; + case S_IFIFO: str[0] = 'f'; break; + case S_IFLNK: str[0] = 'l'; break; + case S_IFSOCK: str[0] = 's'; break; + case S_IFREG: str[0] = '-'; break; + default: str[0] = '?'; + } + + for(i = 0; i < 9; i++) { + c = l[i%3]; + str[9-i] = (mode & mask)?c:'-'; + mask = mask<<1; + } + + if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S'; + if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S'; + if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T'; + str[10] = '\0'; + return str; +} +#endif /* CONFIG_CMD_JFFS2 */ + +extern int cramfs_check (struct part_info *info); +extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename); +extern int cramfs_ls (struct part_info *info, char *filename); +extern int cramfs_info (struct part_info *info); + +/***************************************************/ +/* U-boot commands */ +/***************************************************/ + +/** + * Routine implementing fsload u-boot command. This routine tries to load + * a requested file from cramfs filesystem at location 'cramfsaddr'. + * cramfsaddr is an evironment variable. + * + * @param cmdtp command internal data + * @param flag command flag + * @param argc number of arguments supplied to the command + * @param argv arguments list + * @return 0 on success, 1 otherwise + */ +int do_cramfs_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + char *filename; + int size; + ulong offset = load_addr; + + struct part_info part; + struct mtd_device dev; + struct mtdids id; + + ulong addr; + addr = simple_strtoul(getenv("cramfsaddr"), NULL, 16); + + /* hack! */ + /* cramfs_* only supports NOR flash chips */ + /* fake the device type */ + id.type = MTD_DEV_TYPE_NOR; + id.num = 0; + dev.id = &id; + part.dev = &dev; + /* fake the address offset */ + part.offset = addr - OFFSET_ADJUSTMENT; + + /* pre-set Boot file name */ + if ((filename = getenv("bootfile")) == NULL) { + filename = "uImage"; + } + + if (argc == 2) { + filename = argv[1]; + } + if (argc == 3) { + offset = simple_strtoul(argv[1], NULL, 0); + load_addr = offset; + filename = argv[2]; + } + + size = 0; + if (cramfs_check(&part)) + size = cramfs_load ((char *) offset, &part, filename); + + if (size > 0) { + printf("### CRAMFS load complete: %d bytes loaded to 0x%lx\n", + size, offset); + setenv_hex("filesize", size); + } else { + printf("### CRAMFS LOAD ERROR<%x> for %s!\n", size, filename); + } + + return !(size > 0); +} + +/** + * Routine implementing u-boot ls command which lists content of a given + * directory at location 'cramfsaddr'. + * cramfsaddr is an evironment variable. + * + * @param cmdtp command internal data + * @param flag command flag + * @param argc number of arguments supplied to the command + * @param argv arguments list + * @return 0 on success, 1 otherwise + */ +int do_cramfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + char *filename = "/"; + int ret; + struct part_info part; + struct mtd_device dev; + struct mtdids id; + + ulong addr; + addr = simple_strtoul(getenv("cramfsaddr"), NULL, 16); + + /* hack! */ + /* cramfs_* only supports NOR flash chips */ + /* fake the device type */ + id.type = MTD_DEV_TYPE_NOR; + id.num = 0; + dev.id = &id; + part.dev = &dev; + /* fake the address offset */ + part.offset = addr - OFFSET_ADJUSTMENT; + + if (argc == 2) + filename = argv[1]; + + ret = 0; + if (cramfs_check(&part)) + ret = cramfs_ls (&part, filename); + + return ret ? 0 : 1; +} + +/* command line only */ + +/***************************************************/ +U_BOOT_CMD( + cramfsload, 3, 0, do_cramfs_load, + "load binary file from a filesystem image", + "[ off ] [ filename ]\n" + " - load binary file from address 'cramfsaddr'\n" + " with offset 'off'\n" +); +U_BOOT_CMD( + cramfsls, 2, 1, do_cramfs_ls, + "list files in a directory (default /)", + "[ directory ]\n" + " - list files in a directory.\n" +); + +#endif /* #ifdef CONFIG_CRAMFS_CMDLINE */ + +/***************************************************/ |