MTD with non-power-of-2 page size
dave.kitchen at insync.tv
Wed Aug 12 04:21:00 PDT 2015
I have just started to work with barebox on an Atmel at91sam9g45 processor.
The board has an Atmel AT45DB161 dataflash configured as 528-byte page size.
I find that eg saveenv command does not run as the page erase fails with
EINVAL. On tracing this is fired from the page size and offset
correction code [mtd/core,c mtd_erase_align()] which uses bit masking to
align the size and offset. Unfortunately bit-masking does not work with
non-power-of-2 pages. Has anyone else addressed this problem?
The 'trivial' exercise of replacing the bit masks by modulo [%] operator
does not succeed as the compiler I am using (gcc!) does not support
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