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authorMax Krummenacher <max.oss.09@gmail.com>2016-06-13 10:15:48 +0200
committerScott Wood <oss@buserror.net>2016-06-19 19:25:12 -0500
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nand: extend nand torture
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 <max.krummenacher@toradex.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com> [scottwood: fix usage to show size as optional, and add misssing braces] Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'doc')
-rw-r--r--doc/README.nand6
1 files changed, 5 insertions, 1 deletions
diff --git a/doc/README.nand b/doc/README.nand
index 96ffc48..4ecf9de 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)