Hi,
I am looking to add U-Boot support for the LaCie Network Space v2 board.
The SoC is a Kirkwood 88F6281_A0 and the boot device is a Macronix SPI flash (MX25L4005A). My problem is that the embedded stock U-Boot (1.1.4 version patched by Marvell and LaCie) enable write protection for the SPI flash. Then, after an U-Boot update, turn off this protection is needed to allow saving U-Boot environment.
It is not clear for me how to proceed. Disable the write protection from the board setup code could be an idea but a problem is that the SPI flash API don't export any helpful method... Maybe I should add one ?
An another idea is disabling the write protection anyway while initializing the flash (from the low level macronix driver). It is quite straightforward but I don't know if a flash driver is allowed to do that. After all, a flash could be protected for some good reasons.
My last idea is doing nothing and let an another piece of software handle the problem...
Thanks in advance for advices.
Simon
PS: some pointers about this project:
git : http://git.lacie-nas.org/u-boot-lacie.git (branch netspace_v2) wiki: http://www.lacie-nas.org/doku.php?id=network_space_v2#u-boot