On 01/12/2011 01:49 PM, Fabio Estevam wrote:
Hi,
Hi Fabio,
I am trying to make the new relocation scheme to work on the mx31pdk board.
With this patch applied the mx31pdk build works, but not able to get a U-boot prompt yet.
I have tried to imagine some issues, but I cannot find a clear reason. Building with your patch I checked that nand_spl is still less than 2KB code, and that matches the NAND page, as required by i.MX31 - so it is not a problem.
Have you tried to disable the relocation, just to check if the relocation is an issue with CONFIG_SKIP_RELOCATE_UBOOT ? This is not a solution, but only to check what happens.
I copied the nand_spl/board/karo/tx25/u-boot.lds to the mx31pdk one.
I am not certain whether the CONFIG_SYS_TEXT_BASE should be changed or not:
ifdef CONFIG_NAND_SPL CONFIG_SYS_TEXT_BASE = 0x87ec0000 else CONFIG_SYS_TEXT_BASE = 0x87f00000 endif
I think they are ok - both addresses are valid RAM addresses. The relocation will move then the code at the end of the RAM. And as I understood from i.MX31 manual, the NFC controller does not use the IRAM at all, so the area pointed by your starting stack pointer should not be overwritten.
If anyone has any comments/suggestions I will appreciate it.
No great idea, really. Probably you need to attach a JTAG debugger and see what happens.
Best regards, Stefano Babic