Yocto Build U-Boot TI: Difference between revisions
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<!-- Set release according to "release" parameter in URL and use am62-yocto-dunfell-5.10.168_08.06.00.42-v1.0 as default | <!-- Set release according to "release" parameter in URL and use am62-yocto-dunfell-5.10.168_08.06.00.42-v1.0 as default | ||
--> {{INIT_RELEASE_PARAM|am62-yocto- | --> {{INIT_RELEASE_PARAM|am62-yocto-kirkstone-6.1.46_09.01.00.08-v1.0}}<!-- | ||
--> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!-- | --> {{#lst:Yocto_Platform_Customization|{{#var:RELEASE_PARAM}}}} <!-- | ||
--> {{#vardefine:WORKDIR|~/{{#var:MACHINE_NAME}}-u-boot}} <!-- | --> {{#vardefine:WORKDIR|~/{{#var:MACHINE_NAME}}-u-boot}} <!-- | ||
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This guide walks through the process for manually building and installing the U-Boot images from source. It is derived from TI's [https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/{{#var:TI_RELEASE_}}/exports/docs/linux/Foundational_Components/U-Boot/UG-General-Info.html?highlight=build%20uboot Build U-Boot] guide | This guide walks through the process for manually building and installing the U-Boot images from source. It is derived from TI's [https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/{{#var:TI_RELEASE_}}/exports/docs/linux/Foundational_Components/U-Boot/UG-General-Info.html?highlight=build%20uboot Build U-Boot] guide | ||
= Installing required packages = | |||
Install the required packages documented in the {{Varlink|Yocto_Build_Release|{{#var:RELEASE_LINK}}|'''Build Yocto from source code'''}} guide. | |||
{{#ifexpr: {{#var:YOCTO_VERSION}} >= 4.1 | | |||
Building U-boot requires Python 3.10 or newer, which is shipped with Ubuntu 22.04. | |||
In addition to Python 3.10, the following python3 modules are required for binman: | |||
$ pip3 install jsonschema pyelftools | |||
}} | |||
= Fetch source code and install dependencies = | = Fetch source code and install dependencies = | ||
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-->{{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | | -->{{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | | ||
Fetch the core-secdev-k3 Security Dev Tool: | |||
{{GIT_FETCH|NAME=CORE_SECDEV_K3|WORKDIR={{#var:WORKDIR_ENV}}|USE_COMMIT=y}} | |||
Fetch ti-k3-image-gen: | |||
{{GIT_FETCH|NAME=K3_IMAGE_GEN|WORKDIR={{#var:WORKDIR_ENV}}|USE_COMMIT=y}} | |||
}} | }} | ||
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Export variables for building U-Boot | Export variables for building U-Boot | ||
$ export PATH=$HOME/{{#var:armv7_toolchain}}/bin:$PATH && | $ export PATH=$HOME/{{#var:armv7_toolchain}}/bin:$PATH && | ||
export PATH=$HOME/{{#var:armv8_toolchain}}/bin:$PATH && | export PATH=$HOME/{{#var:armv8_toolchain}}/bin:$PATH && {{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | | ||
export TI_SECURE_DEV_PKG={{#var:WORKDIR_ENV}}/{{#var:CORE_SECDEV_K3_REPO}} && | export TI_SECURE_DEV_PKG={{#var:WORKDIR_ENV}}/{{#var:CORE_SECDEV_K3_REPO}} && | ||
export | export K3IG_DIR={{#var:WORKDIR_ENV}}/{{#var:K3_IMAGE_GEN_REPO}} && | ||
export | export SYSFW_DIR={{#var:WORKDIR_ENV}}/{{#var:TI_LINUX_FIRMWARE_REPO}}/ti-sysfw && | ||
export | export DMFW_DIR={{#var:WORKDIR_ENV}}/{{#var:TI_LINUX_FIRMWARE_REPO}}/ti-dm/am62xx && | ||
export | | | ||
export TFA_DIR={{#var:WORKDIR_ENV}}/{{#var:ATF_REPO}} && | export TI_LINUX_FW_DIR={{#var:WORKDIR_ENV}}/{{#var:TI_LINUX_FIRMWARE_REPO}} && | ||
}} | |||
export UBOOT_DIR={{#var:WORKDIR_ENV}}/{{#var:U-BOOT_REPO}} && | |||
export TFA_DIR={{#var:WORKDIR_ENV}}/{{#var:ATF_REPO}} && | |||
export OPTEE_DIR={{#var:WORKDIR_ENV}}/{{#var:OPTEE_REPO}} | export OPTEE_DIR={{#var:WORKDIR_ENV}}/{{#var:OPTEE_REPO}} | ||
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$ cd {{#var:WORKDIR_ENV}}/{{#var:U-BOOT_REPO}} | $ cd {{#var:WORKDIR_ENV}}/{{#var:U-BOOT_REPO}} | ||
$ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- {{#var:U-BOOT_R5_DEFCONFIG}} O=$UBOOT_DIR/out/r5 | $ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- {{#var:U-BOOT_R5_DEFCONFIG}} O=$UBOOT_DIR/out/r5 | ||
$ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- O=$UBOOT_DIR/out/r5 | $ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- O=$UBOOT_DIR/out/r5 {{#ifexpr: {{#var:YOCTO_VERSION}} >= 4.1 | BINMAN_INDIRS=$TI_LINUX_FW_DIR}}{{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | | ||
Build tiboot3-am62x-hs-fs-evm.bin. Saved in $K3IG_DIR. Requires u-boot-spl.bin and ti-fs-firmware-am62x-hs-fs.bin. | Build tiboot3-am62x-hs-fs-evm.bin. Saved in $K3IG_DIR. Requires u-boot-spl.bin and ti-fs-firmware-am62x-hs-fs.bin. | ||
$ cd $K3IG_DIR | $ cd $K3IG_DIR | ||
$ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- SOC=am62x SOC_TYPE=hs-fs SBL=$UBOOT_DIR/out/r5/spl/u-boot-spl.bin SYSFW_DIR=$SYSFW_DIR | $ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- SOC=am62x SOC_TYPE=hs-fs SBL=$UBOOT_DIR/out/r5/spl/u-boot-spl.bin SYSFW_DIR=$SYSFW_DIR<!-- | ||
-->}} | |||
{{Note|Note: | {{Note|Note: | ||
The AM62 SOC has multiple variants (GP, HS-FS, HS-SE). For more information, see: [https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/08_06_00_42/exports/docs/linux/Foundational_Components_Migration_Guide.html#device-types Device types] | The AM62 SOC has multiple variants (GP, HS-FS, HS-SE). For more information, see: [https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/08_06_00_42/exports/docs/linux/Foundational_Components_Migration_Guide.html#device-types Device types] | ||
Early Variscite VAR-SOM-AM62 samples were shipped with the GP variant. | Early Variscite VAR-SOM-AM62 samples were shipped with the GP variant. | ||
To build U-Boot for the GP variant, replaces 'hs-fs' with 'gp' above.}} | {{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | To build U-Boot for the GP variant, replaces 'hs-fs' with 'gp' above.}}}} | ||
'''U-Boot A53 Images''' | '''U-Boot A53 Images''' | ||
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$ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- {{#var:U-BOOT_A53_DEFCONFIG}} O=$UBOOT_DIR/out/a53 | $ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- {{#var:U-BOOT_A53_DEFCONFIG}} O=$UBOOT_DIR/out/a53 | ||
$ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- \ | $ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- \ | ||
ATF=$TFA_DIR/build/k3/lite/release/bl31.bin \ | {{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | ATF= | BL31=}}$TFA_DIR/build/k3/lite/release/bl31.bin \ | ||
TEE=$OPTEE_DIR/out/arm-plat-k3/core/tee-pager_v2.bin \ | TEE=$OPTEE_DIR/out/arm-plat-k3/core/tee-pager_v2.bin \{{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | | ||
DM=$DMFW_DIR/ipc_echo_testb_mcu1_0_release_strip.xer5f \ | DM=$DMFW_DIR/ipc_echo_testb_mcu1_0_release_strip.xer5f \}} | ||
O=$UBOOT_DIR/out/a53 | O=$UBOOT_DIR/out/a53 {{#ifexpr: {{#var:YOCTO_VERSION}} >= 4.1 | BINMAN_INDIRS=$TI_LINUX_FW_DIR}}{{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1}} | ||
= Update U-Boot on running system = | = Update U-Boot on running system = | ||
To update U-Boot on an existing system, the following SPL and U-Boot images need to be installed to the boot partition of the boot media (eMMC or SD): | To update U-Boot on an existing system, the following SPL and U-Boot images need to be installed to the boot partition of the boot media (eMMC or SD): | ||
$K3IG_DIR/tiboot3.bin | {{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | $K3IG_DIR/tiboot3.bin | $UBOOT_DIR/out/r5/tiboot3.bin }} | ||
$UBOOT_DIR/out/a53/tispl.bin | $UBOOT_DIR/out/a53/tispl.bin | ||
$UBOOT_DIR/out/a53/u-boot.img | $UBOOT_DIR/out/a53/u-boot.img | ||
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$ cd $UBOOT_DIR && git rev-parse HEAD | $ cd $UBOOT_DIR && git rev-parse HEAD | ||
{{#var:U-BOOT_COMMIT}} | |||
Verify this matches the versions printed by U-Boot: | Verify this matches the versions printed by U-Boot: | ||
U-Boot SPL | U-Boot SPL {{#var:U-BOOT_TI_VER}}-g{{#var:U-BOOT_COMMIT_SHORT}} (Mar 23 2023 - 22:04:15 +0000) <--- R5 | ||
U-Boot SPL | U-Boot SPL {{#var:U-BOOT_TI_VER}}-g{{#var:U-BOOT_COMMIT_SHORT}} (Mar 23 2023 - 22:04:15 +0000) <--- A53 | ||
U-Boot | U-Boot {{#var:U-BOOT_TI_VER}}-g{{#var:U-BOOT_COMMIT_SHORT}} (Mar 24 2023 - 16:25:35 -0500) <--- A53 | ||
=== Update U-Boot on an SD Card === | === Update U-Boot on an SD Card === | ||
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* Copy the new files and umount the SD card: | * Copy the new files and umount the SD card: | ||
$ sudo cp $K3IG_DIR/tiboot3.bin $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img ~/.sdcard | $ sudo cp {{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | $K3IG_DIR/tiboot3.bin | $UBOOT_DIR/out/r5/tiboot3.bin}} $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img ~/.sdcard | ||
$ sudo umount ~/.sdcard && sync | $ sudo umount ~/.sdcard && sync | ||
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* Copy the new files and umount the SD card: | * Copy the new files and umount the SD card: | ||
$ sudo cp $K3IG_DIR/tiboot3.bin $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img ~/.sdcard | $ sudo cp {{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | $K3IG_DIR/tiboot3.bin | $UBOOT_DIR/out/r5/tiboot3.bin}} $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img ~/.sdcard | ||
$ sudo umount ~/.sdcard && sync | $ sudo umount ~/.sdcard && sync | ||
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* Transfer the new files: | * Transfer the new files: | ||
$ scp $K3IG_DIR/tiboot3.bin $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img root@<ip address>:/mnt/ | $ scp {{#ifexpr: {{#var:YOCTO_VERSION}} < 4.1 | $K3IG_DIR/tiboot3.bin | $UBOOT_DIR/out/r5/tiboot3.bin}} $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img root@<ip address>:/mnt/ | ||
* Reboot the {{#var:HARDWARE_NAME}} and verify the R5 SPL, A53 SPL, and A53 U-Boot match the output of '''git rev-parse HEAD''' | * Reboot the {{#var:HARDWARE_NAME}} and verify the R5 SPL, A53 SPL, and A53 U-Boot match the output of '''git rev-parse HEAD''' | ||
Latest revision as of 13:32, 1 October 2024
Warning: This page is designed to be used with a 'release' URL parameter.
This page is using the default release am62-yocto-kirkstone-6.1.46_09.01.00.08-v1.0.
To view this page for a specific Variscite SoM and software release, please follow these steps:
- Visit variwiki.com
- Select your SoM
- Select the software release
Yocto Build U-Boot from source code
Introduction
This guide walks through the process for manually building and installing the U-Boot images from source. It is derived from TI's Build U-Boot guide
Installing required packages
Install the required packages documented in the Build Yocto from source code guide.
Building U-boot requires Python 3.10 or newer, which is shipped with Ubuntu 22.04.
In addition to Python 3.10, the following python3 modules are required for binman:
$ pip3 install jsonschema pyelftools
Fetch source code and install dependencies
This section describes the one time process to install the toolchains and fetch the necessary source code for building U-Boot.
Install Toolchains to home directory
$ cd ~ $ wget https://developer.arm.com/-/media/Files/downloads/gnu/11.3.rel1/binrel/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf.tar.xz && \ tar -Jxvf arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf.tar.xz -C $HOME && \ wget https://developer.arm.com/-/media/Files/downloads/gnu/11.3.rel1/binrel/arm-gnu-toolchain-11.3.rel1-x86_64-aarch64-none-linux-gnu.tar.xz && \ tar -Jxvf arm-gnu-toolchain-11.3.rel1-x86_64-aarch64-none-linux-gnu.tar.xz -C $HOME
Fetch Source Code
Setup a working directory
$ export WORKDIR=~/am62x-var-som-u-boot $ mkdir $WORKDIR
Fetch the U-Boot source:
$ cd $WORKDIR $ git clone https://github.com/varigit/ti-u-boot -b ti-u-boot-2023.04_var01 ti-u-boot
Fetch ti-linux-firmware:
$ cd $WORKDIR $ git clone https://git.ti.com/git/processor-firmware/ti-linux-firmware -b ti-linux-firmware ti-linux-firmware $ cd ti-linux-firmware && \ git checkout 9ee2fedb1fb4815f54310dd872d34faf9948c7c1 && \ cd ../
Fetch arm-trusted-firmware:
$ cd $WORKDIR $ git clone https://git.trustedfirmware.org/TF-A/trusted-firmware-a -b master trusted-firmware-a $ cd trusted-firmware-a && \ git checkout d7a7135d32a8c7da004c0c19b75bd4e2813f9759 && \ cd ../
Fetch optee-os:
$ cd $WORKDIR $ git clone https://github.com/OP-TEE/optee_os -b master optee_os $ cd optee_os && \ git checkout 2a5b1d1232f582056184367fb58a425ac7478ec6 && \ cd ../
Build U-Boot out of Yocto tree
After fetching the source code and installing dependencies, you may return to $WORKDIR anytime and follow these steps to build U-Boot:
Setup the environment
Export the working directory
$ export WORKDIR=~/am62x-var-som-u-boot
Export variables for building U-Boot
$ export PATH=$HOME/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin:$PATH && export PATH=$HOME/arm-gnu-toolchain-11.3.rel1-x86_64-aarch64-none-linux-gnu/bin:$PATH && export TI_LINUX_FW_DIR=$WORKDIR/ti-linux-firmware && export UBOOT_DIR=$WORKDIR/ti-u-boot && export TFA_DIR=$WORKDIR/trusted-firmware-a && export OPTEE_DIR=$WORKDIR/optee_os
Build Images
ATF
$ cd $TFA_DIR $ make -j$(nproc) ARCH=aarch64 CROSS_COMPILE=aarch64-none-linux-gnu- PLAT=k3 TARGET_BOARD=lite SPD=opteed
OP-TEE
$ cd $OPTEE_DIR $ make -j$(nproc) CROSS_COMPILE64=aarch64-none-linux-gnu- CROSS_COMPILE32=arm-none-linux-gnueabihf- PLATFORM=k3-am62x CFG_ARM64_core=y
U-Boot R5 Images
Optional - Modify am62x_var_som_r5_defconfig:
$ cd $WORKDIR/ti-u-boot $ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- am62x_var_som_r5_defconfig O=$UBOOT_DIR/out/r5 $ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- O=$UBOOT_DIR/out/r5 menuconfig ... make and save some changes ... $ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- O=$UBOOT_DIR/out/r5 savedefconfig $ cp out/r5/defconfig configs/am62x_var_som_r5_defconfig
Build u-boot-spl.bin for tiboot3.bin. Saved in $UBOOT_DIR/out/r5:
$ cd $WORKDIR/ti-u-boot $ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- am62x_var_som_r5_defconfig O=$UBOOT_DIR/out/r5 $ make -j$(nproc) ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- O=$UBOOT_DIR/out/r5 BINMAN_INDIRS=$TI_LINUX_FW_DIR
Note:
The AM62 SOC has multiple variants (GP, HS-FS, HS-SE). For more information, see: Device types Early Variscite VAR-SOM-AM62 samples were shipped with the GP variant.
U-Boot A53 Images
Optional - Modify am62x_var_som_a53_defconfig:
$ cd $WORKDIR/ti-u-boot $ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- am62x_var_som_a53_defconfig O=$UBOOT_DIR/out/a53 $ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- O=$UBOOT_DIR/out/a53 menuconfig ... make and save some changes ... $ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- O=$UBOOT_DIR/out/a53 savedefconfig $ cp out/a53/defconfig configs/am62x_var_som_a53_defconfig
Build tispl.bin and u-boot.img. Saved in $UBOOT_DIR/out/a53. Requires bl31.bin, tee-pager_v2.bin, and ipc_echo_testb_mcu1_0_release_strip.xer5f.
$ cd $WORKDIR/ti-u-boot
$ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- am62x_var_som_a53_defconfig O=$UBOOT_DIR/out/a53
$ make -j$(nproc) ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- \
BL31=$TFA_DIR/build/k3/lite/release/bl31.bin \
TEE=$OPTEE_DIR/out/arm-plat-k3/core/tee-pager_v2.bin \
O=$UBOOT_DIR/out/a53 BINMAN_INDIRS=$TI_LINUX_FW_DIR
Update U-Boot on running system
To update U-Boot on an existing system, the following SPL and U-Boot images need to be installed to the boot partition of the boot media (eMMC or SD):
$UBOOT_DIR/out/r5/tiboot3.bin $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img
After updating the boot media, boot U-Boot and verify the commit ids of the R5 SPL, A53 SPL, and A53 U-Boot match the output of git rev-parse HEAD. For example:
$ cd $UBOOT_DIR && git rev-parse HEAD a526abbae21127ac1e79cfc74adb21db97759fdf
Verify this matches the versions printed by U-Boot:
U-Boot SPL 2023.04-ga526abbae2 (Mar 23 2023 - 22:04:15 +0000) <--- R5 U-Boot SPL 2023.04-ga526abbae2 (Mar 23 2023 - 22:04:15 +0000) <--- A53 U-Boot 2023.04-ga526abbae2 (Mar 24 2023 - 16:25:35 -0500) <--- A53
Update U-Boot on an SD Card
To update U-Boot on an SD Card, copy the files to the sd card.
- Mount the SD card boot partition on your host computer and verify the previous U-Boot files are installed:
$ mkdir ~/.sdcard $ sudo mount /dev/sdX ~/.sdcard $ ls ~/.sdcard tiboot3.bin tispl.bin u-boot.img uEnv.txt
- Copy the new files and umount the SD card:
$ sudo cp $UBOOT_DIR/out/r5/tiboot3.bin $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img ~/.sdcard $ sudo umount ~/.sdcard && sync
- Boot the SD card and verify the R5 SPL, A53 SPL, and A53 U-Boot match the output of git rev-parse HEAD
Update U-Boot using UMS
U-Boot can be updated by using the USB Mass Storage gadget to mount the eMMC or SD card on your host computer.
- Connect the USB OTG port to host computer.
- Start the VAR-SOM-AM62 and interrupt U-Boot
- Start UMS on eMMC:
u-boot> ums 0 mmc 1
- Or...start UMS on SD card:
u-boot> ums 0 mmc 2
- Or...start UMS on the current boot device:
u-boot> ums 0 mmc $mmcdev
- Mount the SD card boot partition and verify the previous U-Boot files are installed:
$ mkdir ~/.sdcard $ sudo mount /dev/sdX ~/.sdcard $ ls ~/.sdcard tiboot3.bin tispl.bin u-boot.img uEnv.txt
- Copy the new files and umount the SD card:
$ sudo cp $UBOOT_DIR/out/r5/tiboot3.bin $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img ~/.sdcard $ sudo umount ~/.sdcard && sync
- Boot the SD card and verify the R5 SPL, A53 SPL, and A53 U-Boot match the output of git rev-parse HEAD
Update U-Boot using Ethernet
U-Boot can be updated on a running system by using scp to transfer the files:
- Mount the eMMC boot partition and verify the previous U-Boot files are installed:
# mount /dev/mmcblk0p1 /mnt/ # ls /mnt tiboot3.bin tispl.bin u-boot.img uEnv.txt
- Transfer the new files:
$ scp $UBOOT_DIR/out/r5/tiboot3.bin $UBOOT_DIR/out/a53/tispl.bin $UBOOT_DIR/out/a53/u-boot.img root@<ip address>:/mnt/
- Reboot the VAR-SOM-AM62 and verify the R5 SPL, A53 SPL, and A53 U-Boot match the output of git rev-parse HEAD