From fb3659ac422801ea18f36ef62926df70beeada4c Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Fri, 23 Sep 2011 15:43:10 +0200 Subject: NAND: Add nand read.raw and write.raw commands These commands should work around various "hardware" ECC and BCH methods. Signed-off-by: Marek Vasut Cc: Scott Wood Cc: Stefano Babic Cc: Wolfgang Denk Cc: Detlev Zundel [scottwood@freescale.com: s/write the page/access the page/] Signed-off-by: Scott Wood --- common/cmd_nand.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'common') diff --git a/common/cmd_nand.c b/common/cmd_nand.c index 6edca7607f..1a67e4d81f 100644 --- a/common/cmd_nand.c +++ b/common/cmd_nand.c @@ -598,6 +598,22 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) .mode = MTD_OOB_RAW }; + if (read) + ret = nand->read_oob(nand, off, &ops); + else + ret = nand->write_oob(nand, off, &ops); + } else if (!strcmp(s, ".raw")) { + /* Raw access */ + mtd_oob_ops_t ops = { + .datbuf = (u8 *)addr, + .oobbuf = ((u8 *)addr) + nand->writesize, + .len = nand->writesize, + .ooblen = nand->oobsize, + .mode = MTD_OOB_RAW + }; + + rwsize = nand->writesize + nand->oobsize; + if (read) ret = nand->read_oob(nand, off, &ops); else @@ -695,6 +711,9 @@ U_BOOT_CMD( "nand write - addr off|partition size\n" " read/write 'size' bytes starting at offset 'off'\n" " to/from memory address 'addr', skipping bad blocks.\n" + "nand read.raw - addr off|partition\n" + "nand write.raw - addr off|partition\n" + " Use read.raw/write.raw to avoid ECC and access the page as-is.\n" #ifdef CONFIG_CMD_NAND_TRIMFFS "nand write.trimffs - addr off|partition size\n" " write 'size' bytes starting at offset 'off' from memory address\n" -- cgit v1.2.1