From 1866be7d28ce807397e4aedd93f70564ac8bebc0 Mon Sep 17 00:00:00 2001 From: Max Krummenacher Date: Mon, 13 Jun 2016 10:15:48 +0200 Subject: nand: extend nand torture MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit nand torture currently works on exactly one nand block which is specified by giving the byteoffset to the beginning of the block. Extend this by allowing for a second parameter specifying the byte size to be tested. e.g. ==> nand torture 1000000 NAND torture: device 0 offset 0x1000000 size 0x20000 (block size 0x20000) Passed: 1, failed: 0 ==> nand torture 1000000 40000 NAND torture: device 0 offset 0x1000000 size 0x40000 (block size 0x20000) Passed: 2, failed: 0 Signed-off-by: Max Krummenacher Reviewed-by: Benoît Thébaudeau [scottwood: fix usage to show size as optional, and add misssing braces] Signed-off-by: Scott Wood --- cmd/nand.c | 41 +++++++++++++++++++++++++++++++++++------ doc/README.nand | 6 +++++- 2 files changed, 40 insertions(+), 7 deletions(-) diff --git a/cmd/nand.c b/cmd/nand.c index 583a18f341..ffdeea41a5 100644 --- a/cmd/nand.c +++ b/cmd/nand.c @@ -647,6 +647,9 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) #ifdef CONFIG_CMD_NAND_TORTURE if (strcmp(cmd, "torture") == 0) { + loff_t endoff; + unsigned int failed = 0, passed = 0; + if (argc < 3) goto usage; @@ -655,12 +658,37 @@ static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) return 1; } - printf("\nNAND torture: device %d offset 0x%llx size 0x%x\n", - dev, off, mtd->erasesize); - ret = nand_torture(mtd, off); - printf(" %s\n", ret ? "Failed" : "Passed"); + size = mtd->erasesize; + if (argc > 3) { + if (!str2off(argv[3], &size)) { + puts("Size is not a valid number\n"); + return 1; + } + } - return ret == 0 ? 0 : 1; + endoff = off + size; + if (endoff > mtd->size) { + puts("Arguments beyond end of NAND\n"); + return 1; + } + + off = round_down(off, mtd->erasesize); + endoff = round_up(endoff, mtd->erasesize); + size = endoff - off; + printf("\nNAND torture: device %d offset 0x%llx size 0x%llx (block size 0x%x)\n", + dev, off, size, mtd->erasesize); + while (off < endoff) { + ret = nand_torture(mtd, off); + if (ret) { + failed++; + printf(" block at 0x%llx failed\n", off); + } else { + passed++; + } + off += mtd->erasesize; + } + printf(" Passed: %u, failed: %u\n", passed, failed); + return failed != 0; } #endif @@ -775,7 +803,8 @@ static char nand_help_text[] = "nand bad - show bad blocks\n" "nand dump[.oob] off - dump page\n" #ifdef CONFIG_CMD_NAND_TORTURE - "nand torture off - torture block at offset\n" + "nand torture off - torture one block at offset\n" + "nand torture off [size] - torture blocks from off to off+size\n" #endif "nand scrub [-y] off size | scrub.part partition | scrub.chip\n" " really clean NAND erasing bad blocks (UNSAFE)\n" diff --git a/doc/README.nand b/doc/README.nand index 96ffc48940..4ecf9dee65 100644 --- a/doc/README.nand +++ b/doc/README.nand @@ -307,7 +307,7 @@ Miscellaneous and testing commands: DANGEROUS!!! Factory set bad blocks will be lost. Use only to remove artificial bad blocks created with the "markbad" command. - "torture offset" + "torture offset [size]" Torture block to determine if it is still reliable. Enabled by the CONFIG_CMD_NAND_TORTURE configuration option. This command returns 0 if the block is still reliable, else 1. @@ -324,6 +324,10 @@ Miscellaneous and testing commands: automate actions following a nand->write() error. This would e.g. be required in order to program or update safely firmware to NAND, especially for the UBI part of such firmware. + Optionally, a second parameter size can be given to test multiple blocks with + one call. If size is not a multiple of the NAND's erase size, then the block + that contains offset + size will be tested in full. If used with size, this + command returns 0 if all tested blocks have been found reliable, else 1. NAND locking command (for chips with active LOCKPRE pin) -- cgit v1.2.1