| This document describes the instruction to build and flash ATF/OPTEE/U-Boot on |
| pico-imx7d board. U-Boot is loaded as part of FIP image by ATF in this setup. |
| The boot sequence is ATF -> OPTEE -> U-Boot -> Linux. U-Boot is in non-secure |
| world in this case. |
| |
| - Build u-boot |
| Set environment variable of CROSS_COMPILE for your toolchain and ARCH=arm |
| $ make pico-imx7d_bl33_defconfig |
| $ make all |
| |
| - Download and build OPTEE |
| $ git clone git@github.com:OP-TEE/optee_os.git |
| $ make PLATFORM=imx PLATFORM_FLAVOR=mx7dpico_mbl CFG_BOOT_SECONDARY_REQUEST=y ARCH=arm |
| |
| - Download and build ATF |
| $ git clone https://git.linaro.org/landing-teams/working/mbl/arm-trusted-firmware.git -b linaro-imx7 |
| $ make DEBUG=1 PLAT=picopi ARCH=aarch32 ARM_ARCH_MAJOR=7 \ |
| CROSS_COMPILE=arm-linux-gnueabihf- LOG_LEVEL=50 V=1 \ |
| CRASH_REPORTING=1 AARCH32_SP=optee all |
| Save file content in this link to file pico-imx7d.cfg: |
| http://git.linaro.org/landing-teams/working/mbl/u-boot.git/tree/board/technexion/pico-imx7d/pico-imx7d.cfg?h=linaro-imx |
| $ u-boot/tools/mkimage -n pico-imx7d.cfg -T imximage -e 0x9df00000 -d \ |
| build/picopi/debug/bl2.bin bl2.imx |
| |
| - Create FIP image |
| Create a fiptool_images/ folder in ATF folder, copy u-boot.bin in u-boot |
| folder and tee*.bin in optee out/arm-plat-imx/core/tee/ folder to |
| fiptool_images. Run below command in ATF folder to generate FIP image. |
| $ make -C tools/fiptool/ |
| $ tools/fiptool/fiptool create --tos-fw fiptool_images/tee-header_v2.bin \ |
| --tos-fw-extra1 fiptool_images/tee-pager_v2.bin \ |
| --tos-fw-extra2 fiptool_images/tee-pageable_v2.bin \ |
| --nt-fw fiptool_images/u-boot.bin \ |
| fip.bin |
| |
| - Burn the images to eMMC for test. |
| Run below command in atf folder: |
| $ dd if=build/picopi/debug/bl2.bin.imx of=/dev/disk/by-id/usb-<your device> bs=1024 seek=1;sync |
| $ dd if=fip.bin of=/dev/disk/by-id/usb-<your device> bs=1024 seek=1;sync |
| |
| - Test |
| Just boot up your board and wait for u-boot start up after ATF's log. |
| For booting Linux in FIT image, please reference the FIT files in |
| u-boot doc/uImage.FIT/ folder. |
