diff options
Diffstat (limited to 'doc')
-rw-r--r-- | doc/README.mpc85xx | 2 | ||||
-rw-r--r-- | doc/README.nand | 21 |
2 files changed, 22 insertions, 1 deletions
diff --git a/doc/README.mpc85xx b/doc/README.mpc85xx index 5a4b591a89a..f9b023f2841 100644 --- a/doc/README.mpc85xx +++ b/doc/README.mpc85xx @@ -26,7 +26,7 @@ Major Config Switches during various boot Modes ---------------------------------------------- NOR boot - !defined(CONFIG_SYS_RAMBOOT) + !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SPL) NOR boot Secure !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT) RAMBOOT(SD, SPI & NAND boot) diff --git a/doc/README.nand b/doc/README.nand index c130189587b..a1a511c5339 100644 --- a/doc/README.nand +++ b/doc/README.nand @@ -108,6 +108,9 @@ Configuration Options: CONFIG_CMD_NAND Enables NAND support and commmands. + CONFIG_CMD_NAND_TORTURE + Enables the torture command (see description of this command below). + CONFIG_MTD_NAND_ECC_JFFS2 Define this if you want the Error Correction Code information in the out-of-band data to be formatted to match the JFFS2 file system. @@ -213,6 +216,24 @@ 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 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. + If the block is detected as unreliable, it is up to the user to decide to + mark this block as bad. + The analyzed block is put through 3 erase / write cycles (or less if the block + is detected as unreliable earlier). + This command can be used in scripts, e.g. together with the markbad command to + automate retries and handling of possibly newly detected bad blocks if the + nand write command fails. + It can also be used manually by users having seen some NAND errors in logs to + search the root cause of these errors. + The underlying nand_torture() function is also useful for code willing to + 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. + NAND locking command (for chips with active LOCKPRE pin) |