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Diffstat (limited to 'README')
| -rw-r--r-- | README | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -3666,6 +3666,14 @@ but it can not erase, write this NOR flash by SRIO or PCIE interface. These two #defines specify the offset and size of the environment area within the specified MMC device. + If offset is positive (the usual case), it is treated as relative to + the start of the MMC partition. If offset is negative, it is treated + as relative to the end of the MMC partition. This can be useful if + your board may be fitted with different MMC devices, which have + different sizes for the MMC partitions, and you always want the + environment placed at the very end of the partition, to leave the + maximum possible space before it, to store other data. + These two values are in units of bytes, but must be aligned to an MMC sector boundary. @@ -3676,6 +3684,9 @@ but it can not erase, write this NOR flash by SRIO or PCIE interface. valid backup copy in case the other copy is corrupted, e.g. due to a power failure during a "saveenv" operation. + This value may also be positive or negative; this is handled in the + same way as CONFIG_ENV_OFFSET. + This value is also in units of bytes, but must also be aligned to an MMC sector boundary. |
