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// SPDX-License-Identifier: GPL-2.0+
/*
*
* based on: cmd_jffs2.c
*
* Add support for a CRAMFS located in RAM
*/
/*
* CRAMFS support
*/
#include <command.h>
#include <env.h>
#include <image.h>
#include <malloc.h>
#include <mapmem.h>
#include <linux/list.h>
#include <linux/ctype.h>
#include <jffs2/jffs2.h>
#include <jffs2/load_kernel.h>
#include <cramfs/cramfs_fs.h>
#include <asm/io.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
#ifndef CONFIG_MTD_NOR_FLASH
# define OFFSET_ADJUSTMENT 0
#else
#include <flash.h>
# define OFFSET_ADJUSTMENT (flash_info[id.num].start[0])
#endif
#ifndef CONFIG_FS_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_FS_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(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
char *filename;
int size;
ulong offset = image_load_addr;
char *offset_virt;
struct part_info part;
struct mtd_device dev;
struct mtdids id;
ulong addr;
addr = hextoul(env_get("cramfsaddr"), NULL);
/* 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 = (u64)(uintptr_t) map_sysmem(addr - OFFSET_ADJUSTMENT, 0);
/* pre-set Boot file name */
filename = env_get("bootfile");
if (!filename)
filename = "uImage";
if (argc == 2) {
filename = argv[1];
}
if (argc == 3) {
offset = simple_strtoul(argv[1], NULL, 0);
image_load_addr = offset;
filename = argv[2];
}
offset_virt = map_sysmem(offset, 0);
size = 0;
if (cramfs_check(&part))
size = cramfs_load (offset_virt, &part, filename);
if (size > 0) {
printf("### CRAMFS load complete: %d bytes loaded to 0x%lx\n",
size, offset);
env_set_hex("filesize", size);
} else {
printf("### CRAMFS LOAD ERROR<%x> for %s!\n", size, filename);
}
unmap_sysmem(offset_virt);
unmap_sysmem((void *)(uintptr_t)part.offset);
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(struct cmd_tbl *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 = hextoul(env_get("cramfsaddr"), NULL);
/* 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 = (u64)(uintptr_t) map_sysmem(addr - OFFSET_ADJUSTMENT, 0);
if (argc == 2)
filename = argv[1];
ret = 0;
if (cramfs_check(&part))
ret = cramfs_ls (&part, filename);
unmap_sysmem((void *)(uintptr_t)part.offset);
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"
);
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