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Original question:
Hello,
we want to use the eMMC boot mode on the am642. We managed to load
tiboot3.bin, sysfw, and tispl.bin from the eMMC bootpart.
The eMMC bootpart look like this:
| 0x0 | tiboot3.bin (512 KB) |
| 0x400 | tispl.bin (2 MB) |
| 0x1400 | u-boot.img (4 MB) |
| 0x3400 | environment (128 KB) |
| 0x3500 | backup environment (128 KB) |
| 0x3600 | sysfw |
In the first step, we tried the layout from the am64x sdk
| 0x0 | tiboot3.bin |
| 0x800 | tispl.bin |
| 0x1800 | u-boot.img |
This partition layout is missing the sysfw address.
Can you confirm the complete layout for am64x, including syswf and environment?
Booting with the first layout fails with "Booting from device 9 not supported!"
This Error message is printed from https://git.ti.com/cgit/ti-u-boot/ti-u-boot/tree/arch/arm/mach-k3/common.c
It seems the code didn't support eMMC booting because only BOOT_DEVICE_MMC2 and BOOT_DEVICE_SPI are defined.
In our case the function "__get_primary_bootmedia" https://git.ti.com/cgit/ti-u-boot/ti-u-boot/tree/arch/arm/mach-k3/am642_init.c return BOOT_DEVICE_MMC1 (BOOT_DEVICE_EMMC)
Is there some u-boot/SPL implementation or configuration missing?
Best regards
Stefan
