| U-Boot for the Toradex Verdin iMX8M Mini Module |
| |
| Quick Start |
| =========== |
| |
| - Build the ARM trusted firmware binary |
| - Get the DDR firmware |
| - Build U-Boot |
| - Flash to eMMC |
| - Boot |
| |
| Get and Build the ARM Trusted Firmware (Trusted Firmware A) |
| =========================================================== |
| |
| $ echo "Downloading and building TF-A..." |
| $ git clone -b imx_4.14.98_2.3.0 https://source.codeaurora.org/external/imx/imx-atf |
| $ cd imx-atf |
| |
| Please edit `plat/imx/imx8mm/include/platform_def.h` so it contains proper |
| values for UART configuration and BL31 base address (correct values listed |
| below): |
| #define BL31_BASE 0x910000 |
| #define IMX_BOOT_UART_BASE 0x30860000 |
| #define DEBUG_CONSOLE 1 |
| |
| Then build ATF (TF-A): |
| $ make PLAT=imx8mm bl31 |
| |
| Get the DDR Firmware |
| ==================== |
| |
| $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.4.1.bin |
| $ chmod +x firmware-imx-8.4.1.bin |
| $ ./firmware-imx-8.4.1.bin |
| $ cp firmware-imx-8.4.1/firmware/ddr/synopsys/lpddr4*.bin ./ |
| |
| Build U-Boot |
| ============ |
| |
| $ export CROSS_COMPILE=aarch64-linux-gnu- |
| $ make verdin-imx8mm_defconfig |
| $ make flash.bin |
| |
| Flash to eMMC |
| ============= |
| |
| > tftpboot ${loadaddr} flash.bin |
| > setexpr blkcnt ${filesize} + 0x1ff && setexpr blkcnt ${blkcnt} / 0x200 |
| > mmc dev 0 1 && mmc write ${loadaddr} 0x2 ${blkcnt} |
| |
| As a convenience, instead of the last two commands one may also use the update |
| U-Boot wrapper: |
| > run update_uboot |
| |
| Boot |
| ==== |
| |
| ATF, U-boot proper and u-boot.dtb images are packed into FIT image, |
| which is loaded and parsed by SPL. |
| |
| Boot sequence is: |
| SPL ---> ATF (TF-A) ---> U-boot proper |
| |
| Output: |
| U-Boot SPL 2020.01-00187-gd411d164e5 (Jan 26 2020 - 04:47:26 +0100) |
| Normal Boot |
| Trying to boot from MMC1 |
| NOTICE: Configuring TZASC380 |
| NOTICE: RDC off |
| NOTICE: BL31: v2.0(release):rel_imx_4.14.98_2.3.0-0-g09c5cc994-dirty |
| NOTICE: BL31: Built : 01:11:41, Jan 25 2020 |
| NOTICE: sip svc init |
| |
| |
| U-Boot 2020.01-00187-gd411d164e5 (Jan 26 2020 - 04:47:26 +0100) |
| |
| CPU: Freescale i.MX8MMQ rev1.0 at 0 MHz |
| Reset cause: POR |
| DRAM: 2 GiB |
| MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 |
| Loading Environment from MMC... OK |
| In: serial |
| Out: serial |
| Err: serial |
| Model: Toradex Verdin iMX8M Mini Quad 2GB Wi-Fi / BT IT V1.0A, Serial# 06535149 |
| Net: eth0: ethernet@30be0000 |
| Hit any key to stop autoboot: 0 |
| Verdin iMX8MM # |
