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/*
* U-Boot command for OneNAND support
*
* Copyright (C) 2005-2008 Samsung Electronics
* Kyungmin Park <kyungmin.park@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <common.h>
#include <command.h>
#include <malloc.h>
#include <linux/compat.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/onenand.h>
#include <asm/io.h>
static struct mtd_info *mtd;
static loff_t next_ofs;
static loff_t skip_ofs;
static inline int str2long(char *p, ulong *num)
{
char *endptr;
*num = simple_strtoul(p, &endptr, 16);
return (*p != '\0' && *endptr == '\0') ? 1 : 0;
}
static int arg_off_size(int argc, char * const argv[], ulong *off, size_t *size)
{
if (argc >= 1) {
if (!(str2long(argv[0], off))) {
printf("'%s' is not a number\n", argv[0]);
return -1;
}
} else {
*off = 0;
}
if (argc >= 2) {
if (!(str2long(argv[1], (ulong *)size))) {
printf("'%s' is not a number\n", argv[1]);
return -1;
}
} else {
*size = mtd->size - *off;
}
if ((*off + *size) > mtd->size) {
printf("total chip size (0x%llx) exceeded!\n", mtd->size);
return -1;
}
if (*size == mtd->size)
puts("whole chip\n");
else
printf("offset 0x%lx, size 0x%x\n", *off, *size);
return 0;
}
static int onenand_block_read(loff_t from, size_t len,
size_t *retlen, u_char *buf, int oob)
{
struct onenand_chip *this = mtd->priv;
int blocks = (int) len >> this->erase_shift;
int blocksize = (1 << this->erase_shift);
loff_t ofs = from;
struct mtd_oob_ops ops = {
.retlen = 0,
};
int ret;
if (oob)
ops.ooblen = blocksize;
else
ops.len = blocksize;
while (blocks) {
ret = mtd_block_isbad(mtd, ofs);
if (ret) {
printk("Bad blocks %d at 0x%x\n",
(u32)(ofs >> this->erase_shift), (u32)ofs);
ofs += blocksize;
continue;
}
if (oob)
ops.oobbuf = buf;
else
ops.datbuf = buf;
ops.retlen = 0;
ret = mtd_read_oob(mtd, ofs, &ops);
if (ret) {
printk("Read failed 0x%x, %d\n", (u32)ofs, ret);
ofs += blocksize;
continue;
}
ofs += blocksize;
buf += blocksize;
blocks--;
*retlen += ops.retlen;
}
return 0;
}
static int onenand_write_oneblock_withoob(loff_t to, const u_char * buf,
size_t *retlen)
{
struct mtd_oob_ops ops = {
.len = mtd->writesize,
.ooblen = mtd->oobsize,
.mode = MTD_OPS_AUTO_OOB,
};
int page, ret = 0;
for (page = 0; page < (mtd->erasesize / mtd->writesize); page ++) {
ops.datbuf = (u_char *)buf;
buf += mtd->writesize;
ops.oobbuf = (u_char *)buf;
buf += mtd->oobsize;
ret = mtd_write_oob(mtd, to, &ops);
if (ret)
break;
to += mtd->writesize;
}
*retlen = (ret) ? 0 : mtd->erasesize;
return ret;
}
static int onenand_block_write(loff_t to, size_t len,
size_t *retlen, const u_char * buf, int withoob)
{
struct onenand_chip *this = mtd->priv;
int blocks = len >> this->erase_shift;
int blocksize = (1 << this->erase_shift);
loff_t ofs;
size_t _retlen = 0;
int ret;
if (to == next_ofs) {
next_ofs = to + len;
to += skip_ofs;
} else {
next_ofs = to + len;
skip_ofs = 0;
}
ofs = to;
while (blocks) {
ret = mtd_block_isbad(mtd, ofs);
if (ret) {
printk("Bad blocks %d at 0x%x\n",
(u32)(ofs >> this->erase_shift), (u32)ofs);
skip_ofs += blocksize;
goto next;
}
if (!withoob)
ret = mtd_write(mtd, ofs, blocksize, &_retlen, buf);
else
ret = onenand_write_oneblock_withoob(ofs, buf, &_retlen);
if (ret) {
printk("Write failed 0x%x, %d", (u32)ofs, ret);
skip_ofs += blocksize;
goto next;
}
buf += blocksize;
blocks--;
*retlen += _retlen;
next:
ofs += blocksize;
}
return 0;
}
static int onenand_block_erase(u32 start, u32 size, int force)
{
struct onenand_chip *this = mtd->priv;
struct erase_info instr = {
.callback = NULL,
};
loff_t ofs;
int ret;
int blocksize = 1 << this->erase_shift;
for (ofs = start; ofs < (start + size); ofs += blocksize) {
ret = mtd_block_isbad(mtd, ofs);
if (ret && !force) {
printf("Skip erase bad block %d at 0x%x\n",
(u32)(ofs >> this->erase_shift), (u32)ofs);
continue;
}
instr.addr = ofs;
instr.len = blocksize;
instr.priv = force;
instr.mtd = mtd;
ret = mtd_erase(mtd, &instr);
if (ret) {
printf("erase failed block %d at 0x%x\n",
(u32)(ofs >> this->erase_shift), (u32)ofs);
continue;
}
}
return 0;
}
static int onenand_block_test(u32 start, u32 size)
{
struct onenand_chip *this = mtd->priv;
struct erase_info instr = {
.callback = NULL,
.priv = 0,
};
int blocks;
loff_t ofs;
int blocksize = 1 << this->erase_shift;
int start_block, end_block;
size_t retlen;
u_char *buf;
u_char *verify_buf;
int ret;
buf = malloc(blocksize);
if (!buf) {
printf("Not enough malloc space available!\n");
return -1;
}
verify_buf = malloc(blocksize);
if (!verify_buf) {
printf("Not enough malloc space available!\n");
return -1;
}
start_block = start >> this->erase_shift;
end_block = (start + size) >> this->erase_shift;
/* Protect boot-loader from badblock testing */
if (start_block < 2)
start_block = 2;
if (end_block > (mtd->size >> this->erase_shift))
end_block = mtd->size >> this->erase_shift;
blocks = start_block;
ofs = start;
while (blocks < end_block) {
printf("\rTesting block %d at 0x%x", (u32)(ofs >> this->erase_shift), (u32)ofs);
ret = mtd_block_isbad(mtd, ofs);
if (ret) {
printf("Skip erase bad block %d at 0x%x\n",
(u32)(ofs >> this->erase_shift), (u32)ofs);
goto next;
}
instr.addr = ofs;
instr.len = blocksize;
ret = mtd_erase(mtd, &instr);
if (ret) {
printk("Erase failed 0x%x, %d\n", (u32)ofs, ret);
goto next;
}
ret = mtd_write(mtd, ofs, blocksize, &retlen, buf);
if (ret) {
printk("Write failed 0x%x, %d\n", (u32)ofs, ret);
goto next;
}
ret = mtd_read(mtd, ofs, blocksize, &retlen, verify_buf);
if (ret) {
printk("Read failed 0x%x, %d\n", (u32)ofs, ret);
goto next;
}
if (memcmp(buf, verify_buf, blocksize))
printk("\nRead/Write test failed at 0x%x\n", (u32)ofs);
next:
ofs += blocksize;
blocks++;
}
printf("...Done\n");
free(buf);
free(verify_buf);
return 0;
}
static int onenand_dump(struct mtd_info *mtd, ulong off, int only_oob)
{
int i;
u_char *datbuf, *oobbuf, *p;
struct mtd_oob_ops ops;
loff_t addr;
datbuf = malloc(mtd->writesize + mtd->oobsize);
oobbuf = malloc(mtd->oobsize);
if (!datbuf || !oobbuf) {
puts("No memory for page buffer\n");
return 1;
}
off &= ~(mtd->writesize - 1);
addr = (loff_t) off;
memset(&ops, 0, sizeof(ops));
ops.datbuf = datbuf;
ops.oobbuf = oobbuf;
ops.len = mtd->writesize;
ops.ooblen = mtd->oobsize;
ops.retlen = 0;
i = mtd_read_oob(mtd, addr, &ops);
if (i < 0) {
printf("Error (%d) reading page %08lx\n", i, off);
free(datbuf);
free(oobbuf);
return 1;
}
printf("Page %08lx dump:\n", off);
i = mtd->writesize >> 4;
p = datbuf;
while (i--) {
if (!only_oob)
printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
" %02x %02x %02x %02x %02x %02x %02x %02x\n",
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
p[8], p[9], p[10], p[11], p[12], p[13], p[14],
p[15]);
p += 16;
}
puts("OOB:\n");
i = mtd->oobsize >> 3;
p = oobbuf;
while (i--) {
printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
p += 8;
}
free(datbuf);
free(oobbuf);
return 0;
}
static int do_onenand_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
printf("%s\n", mtd->name);
return 0;
}
static int do_onenand_bad(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
ulong ofs;
mtd = &onenand_mtd;
/* Currently only one OneNAND device is supported */
printf("\nDevice %d bad blocks:\n", 0);
for (ofs = 0; ofs < mtd->size; ofs += mtd->erasesize) {
if (mtd_block_isbad(mtd, ofs))
printf(" %08x\n", (u32)ofs);
}
return 0;
}
static int do_onenand_read(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
char *s;
int oob = 0;
ulong addr, ofs;
size_t len;
int ret = 0;
size_t retlen = 0;
if (argc < 3)
return CMD_RET_USAGE;
s = strchr(argv[0], '.');
if ((s != NULL) && (!strcmp(s, ".oob")))
oob = 1;
addr = (ulong)simple_strtoul(argv[1], NULL, 16);
printf("\nOneNAND read: ");
if (arg_off_size(argc - 2, argv + 2, &ofs, &len) != 0)
return 1;
ret = onenand_block_read(ofs, len, &retlen, (u8 *)addr, oob);
printf(" %d bytes read: %s\n", retlen, ret ? "ERROR" : "OK");
return ret == 0 ? 0 : 1;
}
static int do_onenand_write(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
ulong addr, ofs;
size_t len;
int ret = 0, withoob = 0;
size_t retlen = 0;
if (argc < 3)
return CMD_RET_USAGE;
if (strncmp(argv[0] + 6, "yaffs", 5) == 0)
withoob = 1;
addr = (ulong)simple_strtoul(argv[1], NULL, 16);
printf("\nOneNAND write: ");
if (arg_off_size(argc - 2, argv + 2, &ofs, &len) != 0)
return 1;
ret = onenand_block_write(ofs, len, &retlen, (u8 *)addr, withoob);
printf(" %d bytes written: %s\n", retlen, ret ? "ERROR" : "OK");
return ret == 0 ? 0 : 1;
}
static int do_onenand_erase(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
ulong ofs;
int ret = 0;
size_t len;
int force;
/*
* Syntax is:
* 0 1 2 3 4
* onenand erase [force] [off size]
*/
argc--;
argv++;
if (argc)
{
if (!strcmp("force", argv[0]))
{
force = 1;
argc--;
argv++;
}
}
printf("\nOneNAND erase: ");
/* skip first two or three arguments, look for offset and size */
if (arg_off_size(argc, argv, &ofs, &len) != 0)
return 1;
ret = onenand_block_erase(ofs, len, force);
printf("%s\n", ret ? "ERROR" : "OK");
return ret == 0 ? 0 : 1;
}
static int do_onenand_test(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
ulong ofs;
int ret = 0;
size_t len;
/*
* Syntax is:
* 0 1 2 3 4
* onenand test [force] [off size]
*/
printf("\nOneNAND test: ");
/* skip first two or three arguments, look for offset and size */
if (arg_off_size(argc - 1, argv + 1, &ofs, &len) != 0)
return 1;
ret = onenand_block_test(ofs, len);
printf("%s\n", ret ? "ERROR" : "OK");
return ret == 0 ? 0 : 1;
}
static int do_onenand_dump(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
ulong ofs;
int ret = 0;
char *s;
if (argc < 2)
return CMD_RET_USAGE;
s = strchr(argv[0], '.');
ofs = (int)simple_strtoul(argv[1], NULL, 16);
if (s != NULL && strcmp(s, ".oob") == 0)
ret = onenand_dump(mtd, ofs, 1);
else
ret = onenand_dump(mtd, ofs, 0);
return ret == 0 ? 1 : 0;
}
static int do_onenand_markbad(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
int ret = 0;
ulong addr;
argc -= 2;
argv += 2;
if (argc <= 0)
return CMD_RET_USAGE;
while (argc > 0) {
addr = simple_strtoul(*argv, NULL, 16);
if (mtd_block_markbad(mtd, addr)) {
printf("block 0x%08lx NOT marked "
"as bad! ERROR %d\n",
addr, ret);
ret = 1;
} else {
printf("block 0x%08lx successfully "
"marked as bad\n",
addr);
}
--argc;
++argv;
}
return ret;
}
static cmd_tbl_t cmd_onenand_sub[] = {
U_BOOT_CMD_MKENT(info, 1, 0, do_onenand_info, "", ""),
U_BOOT_CMD_MKENT(bad, 1, 0, do_onenand_bad, "", ""),
U_BOOT_CMD_MKENT(read, 4, 0, do_onenand_read, "", ""),
U_BOOT_CMD_MKENT(write, 4, 0, do_onenand_write, "", ""),
U_BOOT_CMD_MKENT(write.yaffs, 4, 0, do_onenand_write, "", ""),
U_BOOT_CMD_MKENT(erase, 3, 0, do_onenand_erase, "", ""),
U_BOOT_CMD_MKENT(test, 3, 0, do_onenand_test, "", ""),
U_BOOT_CMD_MKENT(dump, 2, 0, do_onenand_dump, "", ""),
U_BOOT_CMD_MKENT(markbad, CONFIG_SYS_MAXARGS, 0, do_onenand_markbad, "", ""),
};
#ifdef CONFIG_NEEDS_MANUAL_RELOC
void onenand_reloc(void) {
fixup_cmdtable(cmd_onenand_sub, ARRAY_SIZE(cmd_onenand_sub));
}
#endif
static int do_onenand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
cmd_tbl_t *c;
if (argc < 2)
return CMD_RET_USAGE;
mtd = &onenand_mtd;
/* Strip off leading 'onenand' command argument */
argc--;
argv++;
c = find_cmd_tbl(argv[0], &cmd_onenand_sub[0], ARRAY_SIZE(cmd_onenand_sub));
if (c)
return c->cmd(cmdtp, flag, argc, argv);
else
return CMD_RET_USAGE;
}
U_BOOT_CMD(
onenand, CONFIG_SYS_MAXARGS, 1, do_onenand,
"OneNAND sub-system",
"info - show available OneNAND devices\n"
"onenand bad - show bad blocks\n"
"onenand read[.oob] addr off size\n"
"onenand write[.yaffs] addr off size\n"
" read/write 'size' bytes starting at offset 'off'\n"
" to/from memory address 'addr', skipping bad blocks.\n"
"onenand erase [force] [off size] - erase 'size' bytes from\n"
"onenand test [off size] - test 'size' bytes from\n"
" offset 'off' (entire device if not specified)\n"
"onenand dump[.oob] off - dump page\n"
"onenand markbad off [...] - mark bad block(s) at offset (UNSAFE)"
);