Hi,
Checking all nand chip is necessary and some of NAND host implement
cmd_ctrl() from cmdfunc( ).
The select_chip() is required.
===============================================================================
diff --git a/cmd/nand.c b/cmd/nand.c
index 5b9d4b3..a7c781a 100644
--- a/cmd/nand.c
+++ b/cmd/nand.c
@@ -156,13 +156,18 @@ static void do_nand_status(nand_info_t *nand)
ulong block_start = 0;
ulong off;
int last_status = -1;
+ int chipnr;
struct nand_chip *nand_chip = nand->priv;
/* check the WP bit */
- nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1);
- printf("device is %swrite protected\n",
- (nand_chip->read_byte(nand) & 0x80 ?
- "NOT " : ""));
+ for (chipnr = 0; chipnr < nand_chip->numchips; chipnr++) {
+ nand_chip->select_chip(nand, chipnr);
+ nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1);
+ printf("device %d is %swrite protected\n", chipnr,
+ (nand_chip->read_byte(nand) & 0x80 ?
+ "NOT " : ""));
+ nand_chip->select_chip(nand, -1);
+ }
for (off = 0; off < nand->size; off += nand->erasesize) {
int s = nand_get_lock_status(nand, off);
======================================================================
Thanks & Best Regards,
Mason Yang
Macronix International Co., Ltd
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=====================================================================
============================================================================
CONFIDENTIALITY NOTE:
This e-mail and any attachments may contain confidential information and/or
personal data, which is protected by applicable laws. Please be reminded that
duplication, disclosure, distribution, or use of this e-mail (and/or its
attachments) or any part thereof is prohibited. If you receive this e-mail in
error, please notify us immediately and delete this mail as well as its
attachment(s) from your system. In addition, please be informed that
collection, processing, and/or use of personal data is prohibited unless
expressly permitted by personal data protection laws. Thank you for your
attention and cooperation.
Macronix International Co., Ltd.
=====================================================================
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