AM3352: U-boot load from different NAND locations

Moses Christopher Bollavarapu

Part Number: AM3352

HI,

I am trying to have two u-boot's (minimal u-boot and advanced u-boot) on my RAW Nand, in a custom board based on AM3352.
I would like to boot to U-boot1 or U-boot2 based on a gpio value in SPL stage. Can someone kindly let me know, if this is possible to do and if it is right to do something like this ?

SPL -- GPIO23 (GPIO INPUT) =1 -> Boot U-boot1
SPL -- GPIO23 (GPIO INPUT) =0 -> Boot U-boot2

I think for this to happen, I've to set the u-boot address location as a runtime value in the SPL stage, right ?

Thanks in advance.

over 6 years ago

0 Andreas Dannenberg over 6 years ago

TI__Guru 70662 points

Hi Moses,

Moses Christopher said:
I think for this to happen, I've to set the u-boot address location as a runtime value in the SPL stage, right ?

Yes, you would want to look inside common/spl/spl_nand.c, specifically how CONFIG_SYS_NAND_U_BOOT_OFFS is used. You would need to substitute this with a variable of sorts that you populate based on your GPIO value.

Regards, Andreas

0 Moses Christopher Bollavarapu over 6 years ago in reply to Andreas Dannenberg

Intellectual 980 points

Hi Andreas,

Thanks for the prompt reply, I'd check that out. :-)

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AM3352: U-boot load from different NAND locations