I'm trying to build and bring up U-boot for imx8mm_evk board. It looks like imx8 requires bunch of files to build the bootloader. The file that will eventually be put onto SD card is called 'imx-boot' genereated by imx_mkimage tool in combination of following four files: SPL, U-boot, ARM Trusted Firmware, DDR firmware.
My question is where do I get DDR firmware from. One of the README files say following but I can't access the repository:
1. DDR PHY firmware images (Mandatory, used for all targets)
Files: lpddr4_pmu_train_imem.bin and lpddr4_pmu_train_dmem.bin
Any help is appreciated.