184 lines
7.8 KiB
Plaintext
184 lines
7.8 KiB
Plaintext
Compilation of U-Boot:
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1. Pre-requisite
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2. Initialise cross-compilation via SDK
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3. Prepare U-Boot source code
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4. Management of U-Boot source code
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5. Compile U-Boot source code
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6. Update software on board
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1. Pre-requisite:
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-----------------
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OpenSTLinux SDK must be installed.
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For U-Boot build you need to install:
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* libncurses and libncursesw dev package
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- Ubuntu: sudo apt-get install libncurses5-dev libncursesw5-dev
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- Fedora: sudo yum install ncurses-devel
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* git:
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- Ubuntu: sudo apt-get install git-core gitk
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- Fedora: sudo yum install git
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If you have never configured you git configuration:
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$> git config --global user.name "your_name"
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$> git config --global user.email "your_email@example.com"
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2. Initialise cross-compilation via SDK:
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---------------------------------------
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* Source SDK environment:
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$> source <path to SDK>/environment-setup-cortexa9hf-neon-openstlinux_weston-linux-gnueabi
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* To verify if you cross-compilation environment are put in place:
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$> set | grep CROSS
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CROSS_COMPILE=arm-openstlinux_weston-linux-gnueabi-
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Warning: the environment are valid only on the shell session where you have
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sourced the sdk environment.
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3. Prepare U-Boot source:
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------------------------
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If you have the tarball and the list of patch then you must extract the
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tarball and apply the patch.
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$> tar xfz <U-Boot source>.tar.gz
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or
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$> tar xfj <U-Boot source>.tar.bz2
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or
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$> tar xfJ <U-Boot source>.tar.xz
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$> cd <directory to U-Boot source code>
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NB: if there is no git management on source code and you would like to have a
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git management on the code see section 4 [Management of U-Boot source code]
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if there is some patch, please apply it on source code
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$> for p in `ls -1 <path to patch>/*.patch`; do patch -p1 < $p; done
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4. Management of U-Boot source code:
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-----------------------------------
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If you like to have a better management of change made on U-Boot source, you
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can use git:
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$> tar xfz <U-Boot source>.tar.gz
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$> cd <directory of U-Boot source code>
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$> test -d .git || git init . && git add . && git commit -m "U-Boot source code" && git gc
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$> git checkout -b WORKING
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$> for p in `ls -1 <path to patch>/*.patch`; do git am $p; done
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NB: you can use directly the source from the community:
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URL: git://git.denx.de/u-boot.git
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Branch: ##GIT_BRANCH##
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Revision: ##GIT_SRCREV##
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$> git clone git://git.denx.de/u-boot.git
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$> cd <directory of U-Boot source code>
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$> git checkout -b WORKING ##GIT_SRCREV##
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$> for p in `ls -1 <path to patch>/*.patch`; do git am $p; done
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5. Compilation U-Boot source code:
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--------------------------------
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To compile U-Boot source code, first move to U-Boot source:
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$> cd <directory to U-Boot source code>
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You can call the specific 'Makefile.sdk' provided to compile U-Boot:
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- Display 'Makefile.sdk' file default configuration and targets:
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$> make -f $PWD/../Makefile.sdk help
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- Compile default U-Boot configuration:
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$> make -f $PWD/../Makefile.sdk all
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Default U-Boot configuration is done in 'Makefile.sdk' file through two specific
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variables 'DEVICE_TREE' and 'UBOOT_CONFIGS':
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- 'DEVICE_TREE' is a list of device tree to build, using 'space' as separator.
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ex: DEVICE_TREE="<devicetree1> <devicetree2>"
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- 'UBOOT_CONFIGS' is a list of '<defconfig>,<type>,<binary>' configurations,
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<defconfig> is the u-boot defconfig to use to build
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<type> is the name append to u-boot binaries (ex: 'trusted', 'basic', etc)
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<binary> is the u-boot binary to export (ex: 'u-boot.bin', 'u-boot.stm32', etc)
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ex: UBOOT_CONFIGS="<defconfig1>,basic,u-boot.bin <defconfig1>,trusted,u-boot.stm32"
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You can override the default U-Boot configuration if you specify these variables:
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- Compile default U-Boot configuration but applying specific devicetree(s):
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$> make -f $PWD/../Makefile.sdk all DEVICE_TREE="<devicetree1> <devicetree2>"
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- Compile for a specific U-Boot configuration:
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$> make -f $PWD/../Makefile.sdk all UBOOT_CONFIGS=<u-boot defconfig>,<u-boot type>,<u-boot binary>
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- Compile for a specific U-Boot configuration and applying specific devicetree(s):
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$> make -f $PWD/../Makefile.sdk all UBOOT_CONFIGS=<u-boot defconfig>,<u-boot type>,<u-boot binary> DEVICE_TREE="<devicetree1> <devicetree2>"
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6. Update software on board:
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----------------------------
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6.1. partitioning of binaries:
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-----------------------------
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There are two possible configurations available:
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- Basic configuration
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- Trusted configuration
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U-Boot build provides binaries for each configuration:
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- Basic configuration: U-Boot SPL and U-Boot imgage (for FSBL and SSBL)
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- Trusted configuration: U-Boot binary with ".stm32" extension (for SSBL)
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Basic configuration:
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On this configuration, we use U-Boot SPL as First Stage Boot Loader (FSBL) and
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U-Boot as Second Stage Boot Loader (SSBL).
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U-Boot SPL (u-boot-spl*.stm32) MUST be copied on a dedicated partition named "fsbl1"
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U-Boot image (u-boot*.img) MUST be copied on a dedicated partition named "ssbl"
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Trusted configuration:
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On this configuration, U-Boot is associated to Trusted Firmware (TF-A) and only
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U-Boot image is used as Second Stage Boot Loader (SSBL).
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TF-A binary (tf-a-*.stm32) MUST be copied on a dedicated partition named "fsbl1"
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U-boot binary (u-boot*.stm32) MUST be copied on a dedicated partition named "ssbl"
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6.2. Update via SDCARD:
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-----------------------
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Basic configuration
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* u-boot-spl*.stm32
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Copy the binary on the dedicated partition, on SDCARD/USB disk the partition
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"fsbl1" is the partition 1:
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- SDCARD: /dev/mmcblkXp1 (where X is the instance number)
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- SDCARD via USB reader: /dev/sdX1 (where X is the instance number)
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dd if=<U-Boot SPL file> of=/dev/<device partition> bs=1M conv=fdatasync
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* u-boot*.img
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Copy the binary on the dedicated partition, on SDCARD/USB disk the partition
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"ssbl" is the partition 4:
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- SDCARD: /dev/mmcblkXp3 (where X is the instance number)
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- SDCARD via USB reader: /dev/sdX3 (where X is the instance number)
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dd if=<U-Boot image file> of=/dev/<device partition> bs=1M conv=fdatasync
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Trusted configuration
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* tf-a-*.stm32
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Copy the binary on the dedicated partition, on SDCARD/USB disk the partition
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"fsbl1" is the partition 1:
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- SDCARD: /dev/mmcblkXp1 (where X is the instance number)
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- SDCARD via USB reader: /dev/sdX1 (where X is the instance number)
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dd if=<TF-A binary file> of=/dev/<device partition> bs=1M conv=fdatasync
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* u-boot*.stm32
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Copy the binary on the dedicated partition, on SDCARD/USB disk the partition
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"ssbl" is the partition 4:
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- SDCARD: /dev/mmcblkXp3 (where X is the instance number)
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- SDCARD via USB reader: /dev/sdX3 (where X is the instance number)
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dd if=<U-Boot stm32 binary file> of=/dev/<device partition> bs=1M conv=fdatasync
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FAQ: to found the partition associated to a specific label, just plug the
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SDCARD/USB disk on your PC and call the following command:
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$> ls -l /dev/disk/by-partlabel/
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total 0
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lrwxrwxrwx 1 root root 10 Jan 17 17:38 bootfs -> ../../mmcblk0p4
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lrwxrwxrwx 1 root root 10 Jan 17 17:38 fsbl1 -> ../../mmcblk0p1 ➔ FSBL (TF-A)
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lrwxrwxrwx 1 root root 10 Jan 17 17:38 fsbl2 -> ../../mmcblk0p2 ➔ FSBL backup (TF-A backup – same content as FSBL)
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lrwxrwxrwx 1 root root 10 Jan 17 17:38 rootfs -> ../../mmcblk0p5
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lrwxrwxrwx 1 root root 10 Jan 17 17:38 ssbl -> ../../mmcblk0p3 ➔ SSBL (U-Boot)
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lrwxrwxrwx 1 root root 10 Jan 17 17:38 userfs -> ../../mmcblk0p6
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6.3. Update via USB mass storage on U-Boot:
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-------------------------------------------
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* Plug the SDCARD on Board.
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* Start the board and stop on U-Boot shell:
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Hit any key to stop autoboot: 0
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STM32MP>
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* plug an USB cable between the PC and the board via USB OTG port.
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* On U-Boot shell, call the usb mass storage functionality:
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STM32MP> ums 0 mmc 0
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ums <USB controller> <dev type: mmc|usb> <dev[:part]>
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ex.:
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ums 0 mmc 0
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ums 0 usb 0
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* Follow section 6.2 to put U-Boot SPL binary and U-Boot binary (*.img or *.stm32)
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on SDCARD/USB disk.
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