u-boot/cmd/cramfs.c
Tyler Hall 511c66b1e6 cmd: cramfs: use map_sysmem for sandbox support
As with most other commands, this needs to factor in the sysmem offset
in the sandbox or it will try to dereference the simulated physical
address directly.

Signed-off-by: Tyler Hall <tylerwhall@gmail.com>
2017-04-18 10:27:57 -04:00

210 lines
4.9 KiB
C

/*
* 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 <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
#include <flash.h>
#ifndef CONFIG_MTD_NOR_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;
char *offset_virt;
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 = (u64)(uintptr_t) map_sysmem(addr - OFFSET_ADJUSTMENT, 0);
/* 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];
}
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);
setenv_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(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 = (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"
);