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![Scott Wood](/assets/img/avatar_default.png)
Legacy NAND had been scheduled for removal. Any boards that use this were already not building in the previous release due to an #error. The disk on chip code in common/cmd_doc.c relies on legacy NAND, and it has also been removed. There is newer disk on chip code in drivers/mtd/nand; someone with access to hardware and sufficient time and motivation can try to get that working, but for now disk on chip is not supported. Signed-off-by: Scott Wood <scottwood@freescale.com>
690 lines
16 KiB
C
690 lines
16 KiB
C
/*
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* Driver for NAND support, Rick Bronson
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* borrowed heavily from:
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* (c) 1999 Machine Vision Holdings, Inc.
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* (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
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*
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* Added 16-bit nand support
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* (C) 2004 Texas Instruments
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*/
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#include <common.h>
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/*
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*
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* New NAND support
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*
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*/
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#include <common.h>
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#include <linux/mtd/mtd.h>
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#if defined(CONFIG_CMD_NAND)
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#include <command.h>
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#include <watchdog.h>
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#include <malloc.h>
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#include <asm/byteorder.h>
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#include <jffs2/jffs2.h>
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#include <nand.h>
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#if defined(CONFIG_CMD_MTDPARTS)
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/* parition handling routines */
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int mtdparts_init(void);
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int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
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int find_dev_and_part(const char *id, struct mtd_device **dev,
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u8 *part_num, struct part_info **part);
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#endif
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static int nand_dump(nand_info_t *nand, ulong off, int only_oob)
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{
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int i;
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u_char *datbuf, *oobbuf, *p;
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datbuf = malloc(nand->writesize + nand->oobsize);
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oobbuf = malloc(nand->oobsize);
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if (!datbuf || !oobbuf) {
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puts("No memory for page buffer\n");
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return 1;
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}
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off &= ~(nand->writesize - 1);
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loff_t addr = (loff_t) off;
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struct mtd_oob_ops ops;
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memset(&ops, 0, sizeof(ops));
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ops.datbuf = datbuf;
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ops.oobbuf = oobbuf; /* must exist, but oob data will be appended to ops.datbuf */
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ops.len = nand->writesize;
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ops.ooblen = nand->oobsize;
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ops.mode = MTD_OOB_RAW;
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i = nand->read_oob(nand, addr, &ops);
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if (i < 0) {
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printf("Error (%d) reading page %08lx\n", i, off);
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free(datbuf);
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free(oobbuf);
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return 1;
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}
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printf("Page %08lx dump:\n", off);
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i = nand->writesize >> 4;
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p = datbuf;
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while (i--) {
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if (!only_oob)
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printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
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" %02x %02x %02x %02x %02x %02x %02x %02x\n",
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p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
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p[8], p[9], p[10], p[11], p[12], p[13], p[14],
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p[15]);
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p += 16;
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}
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puts("OOB:\n");
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i = nand->oobsize >> 3;
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while (i--) {
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printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
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p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
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p += 8;
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}
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free(datbuf);
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free(oobbuf);
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return 0;
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}
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/* ------------------------------------------------------------------------- */
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static inline int str2long(char *p, ulong *num)
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{
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char *endptr;
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*num = simple_strtoul(p, &endptr, 16);
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return (*p != '\0' && *endptr == '\0') ? 1 : 0;
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}
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static int
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arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, size_t *size)
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{
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int idx = nand_curr_device;
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#if defined(CONFIG_CMD_MTDPARTS)
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struct mtd_device *dev;
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struct part_info *part;
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u8 pnum;
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if (argc >= 1 && !(str2long(argv[0], off))) {
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if ((mtdparts_init() == 0) &&
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(find_dev_and_part(argv[0], &dev, &pnum, &part) == 0)) {
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if (dev->id->type != MTD_DEV_TYPE_NAND) {
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puts("not a NAND device\n");
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return -1;
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}
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*off = part->offset;
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if (argc >= 2) {
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if (!(str2long(argv[1], (ulong *)size))) {
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printf("'%s' is not a number\n", argv[1]);
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return -1;
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}
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if (*size > part->size)
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*size = part->size;
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} else {
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*size = part->size;
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}
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idx = dev->id->num;
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*nand = nand_info[idx];
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goto out;
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}
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}
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#endif
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if (argc >= 1) {
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if (!(str2long(argv[0], off))) {
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printf("'%s' is not a number\n", argv[0]);
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return -1;
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}
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} else {
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*off = 0;
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}
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if (argc >= 2) {
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if (!(str2long(argv[1], (ulong *)size))) {
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printf("'%s' is not a number\n", argv[1]);
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return -1;
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}
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} else {
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*size = nand->size - *off;
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}
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#if defined(CONFIG_CMD_MTDPARTS)
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out:
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#endif
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printf("device %d ", idx);
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if (*size == nand->size)
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puts("whole chip\n");
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else
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printf("offset 0x%lx, size 0x%zx\n", *off, *size);
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return 0;
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}
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#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
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static void print_status(ulong start, ulong end, ulong erasesize, int status)
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{
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printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
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start,
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end - 1,
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(end - start) / erasesize,
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((status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
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((status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
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((status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
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}
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static void do_nand_status(nand_info_t *nand)
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{
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ulong block_start = 0;
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ulong off;
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int last_status = -1;
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struct nand_chip *nand_chip = nand->priv;
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/* check the WP bit */
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nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1);
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printf("device is %swrite protected\n",
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(nand_chip->read_byte(nand) & 0x80 ?
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"NOT " : ""));
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for (off = 0; off < nand->size; off += nand->erasesize) {
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int s = nand_get_lock_status(nand, off);
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/* print message only if status has changed */
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if (s != last_status && off != 0) {
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print_status(block_start, off, nand->erasesize,
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last_status);
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block_start = off;
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}
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last_status = s;
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}
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/* Print the last block info */
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print_status(block_start, off, nand->erasesize, last_status);
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}
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#endif
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static void nand_print_info(int idx)
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{
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nand_info_t *nand = &nand_info[idx];
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struct nand_chip *chip = nand->priv;
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printf("Device %d: ", idx);
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if (chip->numchips > 1)
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printf("%dx ", chip->numchips);
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printf("%s, sector size %u KiB\n",
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nand->name, nand->erasesize >> 10);
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}
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int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
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{
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int i, dev, ret = 0;
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ulong addr, off;
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size_t size;
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char *cmd, *s;
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nand_info_t *nand;
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#ifdef CONFIG_SYS_NAND_QUIET
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int quiet = CONFIG_SYS_NAND_QUIET;
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#else
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int quiet = 0;
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#endif
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const char *quiet_str = getenv("quiet");
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/* at least two arguments please */
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if (argc < 2)
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goto usage;
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if (quiet_str)
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quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
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cmd = argv[1];
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if (strcmp(cmd, "info") == 0) {
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putc('\n');
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for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
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if (nand_info[i].name)
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nand_print_info(i);
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}
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return 0;
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}
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if (strcmp(cmd, "device") == 0) {
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if (argc < 3) {
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putc('\n');
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if ((nand_curr_device < 0) ||
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(nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE))
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puts("no devices available\n");
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else
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nand_print_info(nand_curr_device);
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return 0;
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}
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dev = (int)simple_strtoul(argv[2], NULL, 10);
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if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[dev].name) {
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puts("No such device\n");
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return 1;
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}
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printf("Device %d: %s", dev, nand_info[dev].name);
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puts("... is now current device\n");
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nand_curr_device = dev;
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#ifdef CONFIG_SYS_NAND_SELECT_DEVICE
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/*
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* Select the chip in the board/cpu specific driver
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*/
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board_nand_select_device(nand_info[dev].priv, dev);
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#endif
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return 0;
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}
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if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
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strncmp(cmd, "dump", 4) != 0 &&
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strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
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strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
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strcmp(cmd, "biterr") != 0 &&
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strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 )
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goto usage;
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/* the following commands operate on the current device */
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if (nand_curr_device < 0 || nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE ||
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!nand_info[nand_curr_device].name) {
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puts("\nno devices available\n");
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return 1;
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}
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nand = &nand_info[nand_curr_device];
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if (strcmp(cmd, "bad") == 0) {
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printf("\nDevice %d bad blocks:\n", nand_curr_device);
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for (off = 0; off < nand->size; off += nand->erasesize)
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if (nand_block_isbad(nand, off))
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printf(" %08lx\n", off);
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return 0;
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}
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/*
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* Syntax is:
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* 0 1 2 3 4
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* nand erase [clean] [off size]
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*/
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if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
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nand_erase_options_t opts;
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/* "clean" at index 2 means request to write cleanmarker */
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int clean = argc > 2 && !strcmp("clean", argv[2]);
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int o = clean ? 3 : 2;
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int scrub = !strcmp(cmd, "scrub");
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printf("\nNAND %s: ", scrub ? "scrub" : "erase");
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/* skip first two or three arguments, look for offset and size */
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if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
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return 1;
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memset(&opts, 0, sizeof(opts));
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opts.offset = off;
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opts.length = size;
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opts.jffs2 = clean;
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opts.quiet = quiet;
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if (scrub) {
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puts("Warning: "
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"scrub option will erase all factory set "
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"bad blocks!\n"
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" "
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"There is no reliable way to recover them.\n"
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" "
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"Use this command only for testing purposes "
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"if you\n"
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" "
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"are sure of what you are doing!\n"
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"\nReally scrub this NAND flash? <y/N>\n");
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if (getc() == 'y' && getc() == '\r') {
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opts.scrub = 1;
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} else {
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puts("scrub aborted\n");
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return -1;
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}
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}
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ret = nand_erase_opts(nand, &opts);
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printf("%s\n", ret ? "ERROR" : "OK");
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return ret == 0 ? 0 : 1;
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}
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if (strncmp(cmd, "dump", 4) == 0) {
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if (argc < 3)
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goto usage;
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s = strchr(cmd, '.');
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off = (int)simple_strtoul(argv[2], NULL, 16);
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if (s != NULL && strcmp(s, ".oob") == 0)
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ret = nand_dump(nand, off, 1);
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else
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ret = nand_dump(nand, off, 0);
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return ret == 0 ? 1 : 0;
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}
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if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
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int read;
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if (argc < 4)
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goto usage;
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addr = (ulong)simple_strtoul(argv[2], NULL, 16);
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read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
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printf("\nNAND %s: ", read ? "read" : "write");
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if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
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return 1;
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s = strchr(cmd, '.');
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if (!s || !strcmp(s, ".jffs2") ||
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!strcmp(s, ".e") || !strcmp(s, ".i")) {
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if (read)
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ret = nand_read_skip_bad(nand, off, &size,
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(u_char *)addr);
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else
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ret = nand_write_skip_bad(nand, off, &size,
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(u_char *)addr);
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} else if (!strcmp(s, ".oob")) {
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/* out-of-band data */
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mtd_oob_ops_t ops = {
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.oobbuf = (u8 *)addr,
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.ooblen = size,
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.mode = MTD_OOB_RAW
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};
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if (read)
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ret = nand->read_oob(nand, off, &ops);
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else
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ret = nand->write_oob(nand, off, &ops);
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} else {
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printf("Unknown nand command suffix '%s'.\n", s);
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return 1;
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}
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printf(" %zu bytes %s: %s\n", size,
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read ? "read" : "written", ret ? "ERROR" : "OK");
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return ret == 0 ? 0 : 1;
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}
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if (strcmp(cmd, "markbad") == 0) {
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argc -= 2;
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argv += 2;
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if (argc <= 0)
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goto usage;
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while (argc > 0) {
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addr = simple_strtoul(*argv, NULL, 16);
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if (nand->block_markbad(nand, addr)) {
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printf("block 0x%08lx NOT marked "
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"as bad! ERROR %d\n",
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addr, ret);
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ret = 1;
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} else {
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printf("block 0x%08lx successfully "
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"marked as bad\n",
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addr);
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}
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--argc;
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++argv;
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}
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return ret;
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}
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if (strcmp(cmd, "biterr") == 0) {
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/* todo */
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return 1;
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}
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#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
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if (strcmp(cmd, "lock") == 0) {
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int tight = 0;
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int status = 0;
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if (argc == 3) {
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if (!strcmp("tight", argv[2]))
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tight = 1;
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if (!strcmp("status", argv[2]))
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status = 1;
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}
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if (status) {
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do_nand_status(nand);
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} else {
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if (!nand_lock(nand, tight)) {
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puts("NAND flash successfully locked\n");
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} else {
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puts("Error locking NAND flash\n");
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return 1;
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}
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}
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return 0;
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}
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if (strcmp(cmd, "unlock") == 0) {
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if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
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return 1;
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if (!nand_unlock(nand, off, size)) {
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puts("NAND flash successfully unlocked\n");
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} else {
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puts("Error unlocking NAND flash, "
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"write and erase will probably fail\n");
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return 1;
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}
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return 0;
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}
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#endif
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usage:
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cmd_usage(cmdtp);
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return 1;
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}
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U_BOOT_CMD(nand, CONFIG_SYS_MAXARGS, 1, do_nand,
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"NAND sub-system",
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"info - show available NAND devices\n"
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"nand device [dev] - show or set current device\n"
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"nand read - addr off|partition size\n"
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"nand write - addr off|partition size\n"
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" read/write 'size' bytes starting at offset 'off'\n"
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" to/from memory address 'addr', skipping bad blocks.\n"
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"nand erase [clean] [off size] - erase 'size' bytes from\n"
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" offset 'off' (entire device if not specified)\n"
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"nand bad - show bad blocks\n"
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"nand dump[.oob] off - dump page\n"
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"nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
|
|
"nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
|
|
"nand biterr off - make a bit error at offset (UNSAFE)"
|
|
#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
|
|
"\n"
|
|
"nand lock [tight] [status]\n"
|
|
" bring nand to lock state or display locked pages\n"
|
|
"nand unlock [offset] [size] - unlock section"
|
|
#endif
|
|
);
|
|
|
|
static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
|
|
ulong offset, ulong addr, char *cmd)
|
|
{
|
|
int r;
|
|
char *ep, *s;
|
|
size_t cnt;
|
|
image_header_t *hdr;
|
|
#if defined(CONFIG_FIT)
|
|
const void *fit_hdr = NULL;
|
|
#endif
|
|
|
|
s = strchr(cmd, '.');
|
|
if (s != NULL &&
|
|
(strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
|
|
printf("Unknown nand load suffix '%s'\n", s);
|
|
show_boot_progress(-53);
|
|
return 1;
|
|
}
|
|
|
|
printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
|
|
|
|
cnt = nand->writesize;
|
|
r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
|
|
if (r) {
|
|
puts("** Read error\n");
|
|
show_boot_progress (-56);
|
|
return 1;
|
|
}
|
|
show_boot_progress (56);
|
|
|
|
switch (genimg_get_format ((void *)addr)) {
|
|
case IMAGE_FORMAT_LEGACY:
|
|
hdr = (image_header_t *)addr;
|
|
|
|
show_boot_progress (57);
|
|
image_print_contents (hdr);
|
|
|
|
cnt = image_get_image_size (hdr);
|
|
break;
|
|
#if defined(CONFIG_FIT)
|
|
case IMAGE_FORMAT_FIT:
|
|
fit_hdr = (const void *)addr;
|
|
puts ("Fit image detected...\n");
|
|
|
|
cnt = fit_get_size (fit_hdr);
|
|
break;
|
|
#endif
|
|
default:
|
|
show_boot_progress (-57);
|
|
puts ("** Unknown image type\n");
|
|
return 1;
|
|
}
|
|
show_boot_progress (57);
|
|
|
|
r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
|
|
if (r) {
|
|
puts("** Read error\n");
|
|
show_boot_progress (-58);
|
|
return 1;
|
|
}
|
|
show_boot_progress (58);
|
|
|
|
#if defined(CONFIG_FIT)
|
|
/* This cannot be done earlier, we need complete FIT image in RAM first */
|
|
if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
|
|
if (!fit_check_format (fit_hdr)) {
|
|
show_boot_progress (-150);
|
|
puts ("** Bad FIT image format\n");
|
|
return 1;
|
|
}
|
|
show_boot_progress (151);
|
|
fit_print_contents (fit_hdr);
|
|
}
|
|
#endif
|
|
|
|
/* Loading ok, update default load address */
|
|
|
|
load_addr = addr;
|
|
|
|
/* Check if we should attempt an auto-start */
|
|
if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
|
|
char *local_args[2];
|
|
extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
|
|
|
|
local_args[0] = cmd;
|
|
local_args[1] = NULL;
|
|
|
|
printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
|
|
|
|
do_bootm(cmdtp, 0, 1, local_args);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
|
|
{
|
|
char *boot_device = NULL;
|
|
int idx;
|
|
ulong addr, offset = 0;
|
|
#if defined(CONFIG_CMD_MTDPARTS)
|
|
struct mtd_device *dev;
|
|
struct part_info *part;
|
|
u8 pnum;
|
|
|
|
if (argc >= 2) {
|
|
char *p = (argc == 2) ? argv[1] : argv[2];
|
|
if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
|
|
(find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
|
|
if (dev->id->type != MTD_DEV_TYPE_NAND) {
|
|
puts("Not a NAND device\n");
|
|
return 1;
|
|
}
|
|
if (argc > 3)
|
|
goto usage;
|
|
if (argc == 3)
|
|
addr = simple_strtoul(argv[1], NULL, 16);
|
|
else
|
|
addr = CONFIG_SYS_LOAD_ADDR;
|
|
return nand_load_image(cmdtp, &nand_info[dev->id->num],
|
|
part->offset, addr, argv[0]);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
show_boot_progress(52);
|
|
switch (argc) {
|
|
case 1:
|
|
addr = CONFIG_SYS_LOAD_ADDR;
|
|
boot_device = getenv("bootdevice");
|
|
break;
|
|
case 2:
|
|
addr = simple_strtoul(argv[1], NULL, 16);
|
|
boot_device = getenv("bootdevice");
|
|
break;
|
|
case 3:
|
|
addr = simple_strtoul(argv[1], NULL, 16);
|
|
boot_device = argv[2];
|
|
break;
|
|
case 4:
|
|
addr = simple_strtoul(argv[1], NULL, 16);
|
|
boot_device = argv[2];
|
|
offset = simple_strtoul(argv[3], NULL, 16);
|
|
break;
|
|
default:
|
|
#if defined(CONFIG_CMD_MTDPARTS)
|
|
usage:
|
|
#endif
|
|
cmd_usage(cmdtp);
|
|
show_boot_progress(-53);
|
|
return 1;
|
|
}
|
|
|
|
show_boot_progress(53);
|
|
if (!boot_device) {
|
|
puts("\n** No boot device **\n");
|
|
show_boot_progress(-54);
|
|
return 1;
|
|
}
|
|
show_boot_progress(54);
|
|
|
|
idx = simple_strtoul(boot_device, NULL, 16);
|
|
|
|
if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx].name) {
|
|
printf("\n** Device %d not available\n", idx);
|
|
show_boot_progress(-55);
|
|
return 1;
|
|
}
|
|
show_boot_progress(55);
|
|
|
|
return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
|
|
}
|
|
|
|
U_BOOT_CMD(nboot, 4, 1, do_nandboot,
|
|
"boot from NAND device",
|
|
"[partition] | [[[loadAddr] dev] offset]"
|
|
);
|
|
#endif
|