Jetson TK1 SPI Boot Query

[faizmajeed07]

HI!
we are trying to boot Jetson TK1 from SPI. We have done some research related to it and get to a point that you don’t have software support to flash the SPI using your NVFlash tool.
But if we find the way to flash it externally then what can be the procedure? Can we get any information that at what addresses of SPI Flash we have to write our BCT and Uboot?
One more question that we have is, when we turn on the Jetson TK 1, it’s BOOT ROM code copies the uboot from eMMC to RAM when bootstrap settings are for eMMC. if we do the bootstraps settings for SPI Boot then do BOOT ROM code have drivers to communicate with SPI flash and copy uboot from it to RAM?

[DaneLLL]

Hi,
There are several topics for your reference:

Jetson TK1-Boot Loader Clarification

This doc might help: http://developer.nvidia.com/embedded/dlc/tegra-k1-platform-adaptation-bringup-guide As you can see in design guide, there are strapping for boot device option, default setting (1011) is for eMMC, 1000 is fro SPI.

SPI nor-flash boot part number

Hi alejuventino, could someone confirm that the BootRom SPI controller needs a JEDEC read ID compliance ? ie the SPI flash has to be one of those : http://lxr.free-electrons.com/source/Documentation/devicetree/bindings/mtd/jedec,spi-nor.txt TK1 BootROM should be able to support SPI ROM boot using standard JEDEC READ 0x03 and RDSR 0x05 commands. BootROM does not require JEDEC READ_ID 0x90/0xAB command. Thanks

Is the SPI Boot Flash on Jetson in use?

I’m trying to figure out if a design with eMMC as the only flash memory is ok. Seems that is all a stock Jetson uses, but I wanted to ask just in case. Is the SPI Boot Flash used for anything? If not, what could/should it be used for?