Add Documentation of BL33 usage case. U-boot is in non-secure world in this case.
Signed-off-by: Jun Nie <jun....@linaro.org> --- board/technexion/pico-imx7d/README.pico-imx7d_BL33 | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 board/technexion/pico-imx7d/README.pico-imx7d_BL33 diff --git a/board/technexion/pico-imx7d/README.pico-imx7d_BL33 b/board/technexion/pico-imx7d/README.pico-imx7d_BL33 new file mode 100644 index 0000000..40324ff --- /dev/null +++ b/board/technexion/pico-imx7d/README.pico-imx7d_BL33 @@ -0,0 +1,44 @@ +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 g...@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. -- 2.7.4 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
