u-boot has no support for nand programming?

ChickenDuck

I am trying to program a kernel image and filesystem image into nand flash on an OMAP L138 EVM (the logic board). These instructions make good sense:

http://processors.wiki.ti.com/index.php/Booting_Linux_kernel_using_U-Boot#Booting_from_NAND_Flash

However, the version of u-boot I'm using doesn't know the nand command:

U-Boot > nand erase 0x200000 0x200000
Unknown command 'nand' - try 'help'

I am using the u-boot.bin that came with DaVinci-PSP-SDK-03.20.00.12. The version is reported as "U-Boot 2009.11 (May 03 2010 - 15:38:40)" by the version command,

Is there another version of uboot somewhere that can program NAND flash?

over 15 years ago

0 jc-ti over 15 years ago

TI__Mastermind 27585 points

Check the last paragraph the "Setting Up" section in the GSG:

"Default U-Boot comes with SPI flash support. To enable support for other flash types (NAND, NOR), you need to re-build U-Boot. Once you have a new U-Boot image, please flash the new U-Boot images. Here is the procedure for OMAP-L137 (or DA830, AM17xx) and OMAP-L138 (or DA850, AM18xx) EVMs."

Jeff

0 ChickenDuck over 15 years ago in reply to jc-ti

Intellectual 780 points

Thanks, I missed that line.

Just curious - is there any good reason to have this feature disabled as the default u-boot, or could this become included in future psp's? It would help us noobs get running faster.

0 jc-ti over 15 years ago in reply to ChickenDuck

TI__Mastermind 27585 points

Im not entirely sure, but I suspect it is to keep the size of u-boot small.

Jeff

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u-boot has no support for nand programming?