U-Boot. Исходные тексты команд: jffs2.c // SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2002
* Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
*
* (C) Copyright 2003
* Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
*
* (C) Copyright 2005
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* Added support for reading flash partition table from environment.
* Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4
* kernel tree.
*
* $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
* Copyright 2002 SYSGO Real-Time Solutions GmbH
*/
/*
* Three environment variables are used by the parsing routines:
*
* 'partition' - keeps current partition identifier
*
* partition := <part-id>
* <part-id> := <dev-id>,part_num
*
*
* 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
*
* mtdids=<idmap>[,<idmap>,...]
*
* <idmap> := <dev-id>=<mtd-id>
* <dev-id> := 'nand'|'nor'|'onenand'<dev-num>
* <dev-num> := mtd device number, 0...
* <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
*
*
* 'mtdparts' - partition list
*
* mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
*
* <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
* <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
* <part-def> := <size>[@<offset>][<name>][<ro-flag>]
* <size> := standard linux memsize OR '-' to denote all remaining space
* <offset> := partition start offset within the device
* <name> := '(' NAME ')'
* <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
*
* Notes:
* - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
* - if the above variables are not set defaults for a given target are used
*
* Examples:
*
* 1 NOR Flash, with 1 single writable partition:
* mtdids=nor0=edb7312-nor
* mtdparts=mtdparts=edb7312-nor:-
*
* 1 NOR Flash with 2 partitions, 1 NAND with one
* mtdids=nor0=edb7312-nor,nand0=edb7312-nand
* mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
*
*/
/*
* JFFS2/CRAMFS support
*/
#include <common.h>
#include <command.h>
#include <env.h>
#if defined(CONFIG_CMD_FLASH)
#include <flash.h>
#endif
#include <image.h>
#include <malloc.h>
#include <jffs2/jffs2.h>
#include <linux/bug.h>
#include <linux/list.h>
#include <linux/ctype.h>
#include <cramfs/cramfs_fs.h>
#if defined(CONFIG_CMD_NAND)
#include <linux/mtd/rawnand.h>
#include <nand.h>
#endif
#if defined(CONFIG_CMD_ONENAND)
#include <linux/mtd/mtd.h>
#include <linux/mtd/onenand.h>
#include <onenand_uboot.h>
#endif
/* enable/disable debugging messages */
#define DEBUG_JFFS
#undef DEBUG_JFFS
#ifdef DEBUG_JFFS
# define DEBUGF(fmt, args...) printf(fmt ,##args)
#else
# define DEBUGF(fmt, args...)
#endif
/* special size referring to all the remaining space in a partition */
#define SIZE_REMAINING 0xFFFFFFFF
/* special offset value, it is used when not provided by user
*
* this value is used temporarily during parsing, later such offests
* are recalculated */
#define OFFSET_NOT_SPECIFIED 0xFFFFFFFF
/* minimum partition size */
#define MIN_PART_SIZE 4096
/* this flag needs to be set in part_info struct mask_flags
* field for read-only partitions */
#define MTD_WRITEABLE_CMD 1
/* current active device and partition number */
#ifdef CONFIG_CMD_MTDPARTS
/* Use the ones declared in cmd_mtdparts.c */
extern struct mtd_device *current_mtd_dev;
extern u8 current_mtd_partnum;
#else
/* Use local ones */
struct mtd_device *current_mtd_dev = NULL;
u8 current_mtd_partnum = 0;
#endif
#if defined(CONFIG_CMD_CRAMFS)
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);
#else
/* defining empty macros for function names is ugly but avoids ifdef clutter
* all over the code */
#define cramfs_check(x) (0)
#define cramfs_load(x,y,z) (-1)
#define cramfs_ls(x,y) (0)
#define cramfs_info(x) (0)
#endif
#ifndef CONFIG_CMD_MTDPARTS
/**
* Check device number to be within valid range for given device type.
*
* @param dev device to validate
* Return: 0 if device is valid, 1 otherwise
*/
static int mtd_device_validate(u8 type, u8 num, u32 *size)
{
if (type == MTD_DEV_TYPE_NOR) {
#if defined(CONFIG_CMD_FLASH)
if (num < CONFIG_SYS_MAX_FLASH_BANKS) {
*size = flash_info[num].size;
return 0;
}
printf("no such FLASH device: %s%d (valid range 0 ... %d\n",
MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_FLASH_BANKS - 1);
#else
printf("support for FLASH devices not present\n");
#endif
} else if (type == MTD_DEV_TYPE_NAND) {
#if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
struct mtd_info *mtd = get_nand_dev_by_index(num);
if (mtd) {
*size = mtd->size;
return 0;
}
printf("no such NAND device: %s%d (valid range 0 ... %d)\n",
MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_NAND_DEVICE - 1);
#else
printf("support for NAND devices not present\n");
#endif
} else if (type == MTD_DEV_TYPE_ONENAND) {
#if defined(CONFIG_CMD_ONENAND)
*size = onenand_mtd.size;
return 0;
#else
printf("support for OneNAND devices not present\n");
#endif
} else
printf("Unknown defice type %d\n", type);
return 1;
}
/**
* Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
* return device type and number.
*
* @param id string describing device id
* @param ret_id output pointer to next char after parse completes (output)
* @param dev_type parsed device type (output)
* @param dev_num parsed device number (output)
* Return: 0 on success, 1 otherwise
*/
static int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num)
{
const char *p = id;
*dev_type = 0;
if (strncmp(p, "nand", 4) == 0) {
*dev_type = MTD_DEV_TYPE_NAND;
p += 4;
} else if (strncmp(p, "nor", 3) == 0) {
*dev_type = MTD_DEV_TYPE_NOR;
p += 3;
} else if (strncmp(p, "onenand", 7) == 0) {
*dev_type = MTD_DEV_TYPE_ONENAND;
p += 7;
} else {
printf("incorrect device type in %s\n", id);
return 1;
}
if (!isdigit(*p)) {
printf("incorrect device number in %s\n", id);
return 1;
}
*dev_num = simple_strtoul(p, (char **)&p, 0);
if (ret_id)
*ret_id = p;
return 0;
}
/*
* 'Static' version of command line mtdparts_init() routine. Single partition on
* a single device configuration.
*/
/**
* Calculate sector size.
*
* Return: sector size
*/
static inline u32 get_part_sector_size_nand(struct mtdids *id)
{
#if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
struct mtd_info *mtd;
mtd = get_nand_dev_by_index(id->num);
return mtd->erasesize;
#else
BUG();
return 0;
#endif
}
static inline u32 get_part_sector_size_nor(struct mtdids *id, struct part_info *part)
{
#if defined(CONFIG_CMD_FLASH)
u32 end_phys, start_phys, sector_size = 0, size = 0;
int i;
flash_info_t *flash;
flash = &flash_info[id->num];
start_phys = flash->start[0] + part->offset;
end_phys = start_phys + part->size - 1;
for (i = 0; i < flash->sector_count; i++) {
if (flash->start[i] >= end_phys)
break;
if (flash->start[i] >= start_phys) {
if (i == flash->sector_count - 1) {
size = flash->start[0] + flash->size - flash->start[i];
} else {
size = flash->start[i+1] - flash->start[i];
}
if (sector_size < size)
sector_size = size;
}
}
return sector_size;
#else
BUG();
return 0;
#endif
}
static inline u32 get_part_sector_size_onenand(void)
{
#if defined(CONFIG_CMD_ONENAND)
struct mtd_info *mtd;
mtd = &onenand_mtd;
return mtd->erasesize;
#else
BUG();
return 0;
#endif
}
static inline u32 get_part_sector_size(struct mtdids *id, struct part_info *part)
{
if (id->type == MTD_DEV_TYPE_NAND)
return get_part_sector_size_nand(id);
else if (id->type == MTD_DEV_TYPE_NOR)
return get_part_sector_size_nor(id, part);
else if (id->type == MTD_DEV_TYPE_ONENAND)
return get_part_sector_size_onenand();
else
DEBUGF("Error: Unknown device type.\n");
return 0;
}
/**
* Parse and initialize global mtdids mapping and create global
* device/partition list.
*
* 'Static' version of command line mtdparts_init() routine. Single partition on
* a single device configuration.
*
* Return: 0 on success, 1 otherwise
*/
int mtdparts_init(void)
{
static int initialized = 0;
u32 size;
char *dev_name;
DEBUGF("\n---mtdparts_init---\n");
if (!initialized) {
struct mtdids *id;
struct part_info *part;
initialized = 1;
current_mtd_dev = (struct mtd_device *)
malloc(sizeof(struct mtd_device) +
sizeof(struct part_info) +
sizeof(struct mtdids));
if (!current_mtd_dev) {
printf("out of memory\n");
return 1;
}
memset(current_mtd_dev, 0, sizeof(struct mtd_device) +
sizeof(struct part_info) + sizeof(struct mtdids));
id = (struct mtdids *)(current_mtd_dev + 1);
part = (struct part_info *)(id + 1);
/* id */
id->mtd_id = "single part";
dev_name = CONFIG_JFFS2_DEV;
if ((mtd_id_parse(dev_name, NULL, &id->type, &id->num) != 0) ||
(mtd_device_validate(id->type, id->num, &size) != 0)) {
printf("incorrect device: %s%d\n", MTD_DEV_TYPE(id->type), id->num);
free(current_mtd_dev);
return 1;
}
id->size = size;
INIT_LIST_HEAD(&id->link);
DEBUGF("dev id: type = %d, num = %d, size = 0x%08lx, mtd_id = %s\n",
id->type, id->num, id->size, id->mtd_id);
/* partition */
part->name = "static";
part->auto_name = 0;
part->size = CONFIG_JFFS2_PART_SIZE;
part->offset = CONFIG_JFFS2_PART_OFFSET;
part->dev = current_mtd_dev;
INIT_LIST_HEAD(&part->link);
/* recalculate size if needed */
if (part->size == SIZE_REMAINING)
part->size = id->size - part->offset;
part->sector_size = get_part_sector_size(id, part);
DEBUGF("part : name = %s, size = 0x%08lx, offset = 0x%08lx\n",
part->name, part->size, part->offset);
/* device */
current_mtd_dev->id = id;
INIT_LIST_HEAD(¤t_mtd_dev->link);
current_mtd_dev->num_parts = 1;
INIT_LIST_HEAD(¤t_mtd_dev->parts);
list_add(&part->link, ¤t_mtd_dev->parts);
}
return 0;
}
#endif /* #ifndef CONFIG_CMD_MTDPARTS */
/**
* Return pointer to the partition of a requested number from a requested
* device.
*
* @param dev device that is to be searched for a partition
* @param part_num requested partition number
* Return: pointer to the part_info, NULL otherwise
*/
static struct part_info* jffs2_part_info(struct mtd_device *dev, unsigned int part_num)
{
struct list_head *entry;
struct part_info *part;
int num;
if (!dev)
return NULL;
DEBUGF("\n--- jffs2_part_info: partition number %d for device %s%d (%s)\n",
part_num, MTD_DEV_TYPE(dev->id->type),
dev->id->num, dev->id->mtd_id);
if (part_num >= dev->num_parts) {
printf("invalid partition number %d for device %s%d (%s)\n",
part_num, MTD_DEV_TYPE(dev->id->type),
dev->id->num, dev->id->mtd_id);
return NULL;
}
/* locate partition number, return it */
num = 0;
list_for_each(entry, &dev->parts) {
part = list_entry(entry, struct part_info, link);
if (part_num == num++) {
return part;
}
}
return NULL;
}
/***************************************************/
/* U-Boot commands */
/***************************************************/
/**
* Routine implementing fsload u-boot command. This routine tries to load
* a requested file from jffs2/cramfs filesystem on a current partition.
*
* @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_jffs2_fsload(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
char *fsname;
char *filename;
int size;
struct part_info *part;
ulong offset = image_load_addr;
/* pre-set Boot file name */
filename = env_get("bootfile");
if (!filename)
filename = "uImage";
if (argc == 2) {
filename = argv[1];
}
if (argc == 3) {
offset = hextoul(argv[1], NULL);
image_load_addr = offset;
filename = argv[2];
}
/* make sure we are in sync with env variables */
if (mtdparts_init() !=0)
return 1;
if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
/* check partition type for cramfs */
fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
printf("### %s loading '%s' to 0x%lx\n", fsname, filename, offset);
if (cramfs_check(part)) {
size = cramfs_load ((char *) offset, part, filename);
} else {
/* if this is not cramfs assume jffs2 */
size = jffs2_1pass_load((char *)offset, part, filename);
}
if (size > 0) {
printf("### %s load complete: %d bytes loaded to 0x%lx\n",
fsname, size, offset);
env_set_hex("filesize", size);
} else {
printf("### %s LOAD ERROR<%x> for %s!\n", fsname, size, filename);
}
return !(size > 0);
}
return 1;
}
/**
* Routine implementing u-boot ls command which lists content of a given
* directory on a current partition.
*
* @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_jffs2_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
char *filename = "/";
int ret;
struct part_info *part;
if (argc == 2)
filename = argv[1];
/* make sure we are in sync with env variables */
if (mtdparts_init() !=0)
return 1;
if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
/* check partition type for cramfs */
if (cramfs_check(part)) {
ret = cramfs_ls (part, filename);
} else {
/* if this is not cramfs assume jffs2 */
ret = jffs2_1pass_ls(part, filename);
}
return ret ? 0 : 1;
}
return 1;
}
/**
* Routine implementing u-boot fsinfo command. This routine prints out
* miscellaneous filesystem informations/statistics.
*
* @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_jffs2_fsinfo(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct part_info *part;
char *fsname;
int ret;
/* make sure we are in sync with env variables */
if (mtdparts_init() !=0)
return 1;
if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
/* check partition type for cramfs */
fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
printf("### filesystem type is %s\n", fsname);
if (cramfs_check(part)) {
ret = cramfs_info (part);
} else {
/* if this is not cramfs assume jffs2 */
ret = jffs2_1pass_info(part);
}
return ret ? 0 : 1;
}
return 1;
}
/***************************************************/
U_BOOT_CMD(
fsload, 3, 0, do_jffs2_fsload,
"load binary file from a filesystem image",
"[ off ] [ filename ]\n"
" - load binary file from flash bank\n"
" with offset 'off'"
);
U_BOOT_CMD(
fsls, 2, 1, do_jffs2_ls,
"list files in a directory (default /)",
"[ directory ]"
);
U_BOOT_CMD(
fsinfo, 1, 1, do_jffs2_fsinfo,
"print information about filesystems",
""
);
/***************************************************/
|
 |