Hi Chris,
On 10.06.2015 02:02, Chris Packham wrote:
There is a bit of confusion at $dayjob about when CONFIG_SYS_NO_FLASH is used. Initially we thought that this meant I have no parallel NOR flash. So a board with only SPI flash would have CONFIG_SYS_NO_FLASH=1 and CONFIG_SPI_FLASH=1.
Is this understanding correct?
Yes. CONFIG_SYS_NO_FLASH dates back to a time when only parallel NOR flash (like CFI NOR) was available. And it definitely is now confusing at least. Perhaps it would be good to rename it to CONFIG_SYS_NO_PARALLEL_FLASH now.
I'd like to be able to add a blurb to README about how CONFIG_SYS_NO_FLASH should be used.
Thanks, that would be helpful.
Based on what I can tell from the code there seems to be a requirement that if !defined(CONFIG_SYS_NO_FLASH) something must implement flash_init(), flash_write(), etc as defined in include/flash.h. This could be a driver like cfi_flash.c or a board specific implementation.
Yes, this seems to be a correct assumption.
Thanks, Stefan