boot from SPI Flash on imx7d

[hyoungkikim]

hi experts  

i want to boot from spi nor flash,  on imx7d  sabre board, 

so  using MikroBus  i  attached a spi-nor flash, i modified u-boot ( 2022.04 version) to support that flash,  and i successfully read, update a spi-nor in u-boot,

from  a user guide , i know  imx7d can boot by spi,  but i know  not what part to change to boot from a spi flash  in u-boot

basically u-boot has SD-boot and qpsi configuration, i tried to use these configuration with fail

any  information will be of great help , 

thank you sincerely

[JosephAtNXP]

Hi,

Thank you for your interest in NXP Semiconductor products,

Your boot device is not supported on 7D-SDB, the boot device you are trying to use is:

6.6.5.4 Serial ROM through SPI. i.MX 7Dual Applications Processor Reference Manual, Rev. 1, 01/2018.

There should be another board with the BOOT_CFG available for Serial SPI and make sure that the boot image complies with Figure 6-38. CSPI flow chart.

Regards