Booting to an alternate bank on an ADS512101?
Hi,
I just got an ADS512101, so I have a few beginner questions on it.
Is it possible to boot to an "alternate" flash bank on this board, like the "pixis_reset altbank" command does? I know that jumper P4 is supposed to do a flash recovery, but that doesn't seem to work for me (I'll email the manufacturer about that later). And even if it did, that's not exactly what I want, since it requires me to physically move the jumpers.
Instead, I'd like to be able to write a new u-boot.bin into some address in NOR flash, and then reset the board and boot that U-Boot instead. If for some reason this U-boot fails, then a hard reset will bring me back to the original U-Boot.
Signature · 2 lines
Timur Tabi Linux kernel developer at Freescale
Dear Timur Tabi,
Quoted 2 lines · In message <[email protected]> you wrote:
I just got an ADS512101, so I have a few beginner questions on it.
Which exact board revision is this?
Quoted 2 lines
Is it possible to boot to an "alternate" flash bank on this board, like the "
pixis_resetaltbank" command does? I know that jumper P4 is supposed to do a
I don't know what "pixis_reset altbank" does, but there is a separate bank of NOR flash on the mpc5121ads board, which you can select with a jumper.
Quoted 3 lines
flash recovery, but that doesn't seem to work for me (I'll email the manufacturer about that later). And even if it did, that's not exactly what I want, since it requires me to physically move the jumpers.
To switch between the "main" and the "alternate" flash banks you always have to set/remove the jumper. On this hardware there is no software way to perform this switching.
Quoted 4 lines
Instead, I'd like to be able to write a new u-boot.bin into some address in NOR flash, and then reset the board and boot that U-Boot instead. If for some reason this U-boot fails, then a hard reset will bring me back to the original U-Boot.
THis does not work on this hardware. You have to move the jumper.
Alternatively, attach a JTAG debugger...
Best regards,
Wolfgang Denk
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