Keystone 2 NOR Flash Boot Image

Rams

Hi,

In our custom board based on keystone 2, we have a EMIF-16 NOR flash.

We are able to detect EMIF -16 NOR flash in u-boot. The next step is to program appropriate boot image so that we will be able to boot from EMIF-16 NOR flash.

In the eval kit EVMK2H, we have a NAND flash in EMIF-16 interface. We use gph NAND image u-boot-nand.gph to program the EMIF-16 NAND flash and boot in EMIF-16 NAND boot.

My question is whether we can use u-boot-nand.gph for EMIF-16 NOR flash?

I do not see NAND specific stuff for creating the gph image and CONFIG_SYS_TEXT_BASE is common for NOR and NAND flash. As we do not have real NOR XIP and the EMIF NOR flash contents are read by RBL based on EMIF NOR BOOTMODE configuration, u-boot-nand.gph can be used for EMIF-16 NOR flash.

Hope my understanding is correct. Please correct me if I am wrong on usage of gph image. Is there any requirement to generate a special gph image for EMIF-16 NORF flash boot.

Thanks

Rams

over 11 years ago

0 Raja over 11 years ago

TI__Guru* 81335 points

Hi Rams,

Could you please mention the MCSDK version that you are using?

I could not find u-boot-nand.gph in my directories. I could find only u-boot-spi-keystone-evm.gph that is used for NOR flash.

PATH: ..ti\mcsdk_linux_3_00_03_15\images

http://processors.wiki.ti.com/index.php/MCSDK_UG_Chapter_Tools#Programming_SPI_NOR_flash_with_U-Boot_GPH_image

Thanks.

0 Rams over 11 years ago in reply to Raja

Expert 1800 points

Hi,

u-boot-nand.gph is not part of MCSDK. But in order to boot the EVM in EMIF-16 NAND boot mode, we need to create u-boot-nand.gph.

Here are instructions to create u-boot-nand.gph and burning the u-boot image to EMIF-16 NAND.

http://processors.wiki.ti.com/index.php/MCSDK_UG_Chapter_Exploring#Burning_U-Boot_to_NAND_Flash

I built the u-boot-nand.gph from the git repository.https://git.ti.com/keystone-linux/u-boot/trees/master.

Thanks

Rams

0 Raja over 11 years ago in reply to Rams

TI__Guru* 81335 points

Hi Rams,

Yes. Your understanding is correct. You shall use the same gph file for NOR boot. Please keep us updated.

Thanks.

0 Rams over 11 years ago in reply to Raja

Expert 1800 points

Hi Rajasekaran,

Thanks for confirming. I will keep you posted.

Regards

Rams

0 Rams over 11 years ago in reply to Rams

Expert 1800 points

Hi Rajasekaran,

This is to inform you that we used the same image u-boot-nand.gph for EMIF-16 NOR boot for our custom board. It works fine and we are able to successfully boot from NOR flash.

Regards

Rams

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Keystone 2 NOR Flash Boot Image