On Wed, Jan 18, 2017 at 11:01 AM, Fabio Estevam festevam@gmail.com wrote:
Hi Tim,
On Wed, Jan 18, 2017 at 4:49 PM, Tim Harvey tharvey@gateworks.com wrote:
Did you document the 'IMX6 SPL to U-Boot over serial' setup anywhere, or can you talk me through what you did?
It is available at doc/README.imx6 (2. Using imx_usb_loader for first install with SPL).
Fabio,
Thanks for pointing me in the right direction. I did manage to get IMX6 SPL Ymodem working although I had to hack the return value of spl_boot_device(). In my current situation with a board that has no BOOT MODE pin strapping, and no fuses blown imx_usb_loader spl_boot_device() returns BOOT_DEVICE_NOR which is wrong.
The SRC_SBMR register reflects the BOOT MODE pins of the chip (strapping) but the reference manual defines SRC_GPR9 and SRC_GPR10[28] as reserved and I don't recall the reasoning for using these for the boot mode. Can you provide some documentation that we can put in the code? I'm thinking there is something else missing from this function that should be able to determine that the serial downloader was used in my case and return BOOT_DEVICE_UART appropriately.
Regards,
Tim