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nand: Add support for unlock.invert

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NAND unlock command allows an invert bit to be set to unlock all but
the selected page range.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
[scottwood@freescale.com: updated docs and added comment about invert bit]
Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Joe Hershberger
2012-08-22 16:49:42 -05:00
committed by Scott Wood
parent d62e9caaaf
commit eee623a504
4 changed files with 28 additions and 8 deletions
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13
common/cmd_nand.c
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@ -749,11 +749,18 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
return 0;
}
if (strcmp(cmd, "unlock") == 0) {
if (strncmp(cmd, "unlock", 5) == 0) {
int allexcept = 0;
s = strchr(cmd, '.');
if (s && !strcmp(s, ".allexcept"))
allexcept = 1;
if (arg_off_size(argc - 2, argv + 2, &dev, &off, &size) < 0)
return 1;
if (!nand_unlock(&nand_info[dev], off, size)) {
if (!nand_unlock(&nand_info[dev], off, size, allexcept)) {
puts("NAND flash successfully unlocked\n");
} else {
puts("Error unlocking NAND flash, "
@ -807,7 +814,7 @@ U_BOOT_CMD(
"\n"
"nand lock [tight] [status]\n"
" bring nand to lock state or display locked pages\n"
"nand unlock [offset] [size] - unlock section"
"nand unlock[.allexcept] [offset] [size] - unlock section"
#endif
#ifdef CONFIG_ENV_OFFSET_OOB
"\n"