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64430efe69
Include information about permanent ethernet MAC address and add link how to build ATF as U-Boot on Espressobin cannot be flashed without ATF. Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Stefan Roese <sr@denx.de>
88 lines
3.1 KiB
Plaintext
88 lines
3.1 KiB
Plaintext
Marvell U-Boot Build Instructions
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=================================
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This document describes how to compile the U-Boot and how to change U-Boot configuration
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Build Procedure
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----------------
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1. Install required packages:
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# sudo apt-get install libssl-dev
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# sudo apt-get install device-tree-compiler
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# sudo apt-get install swig libpython-dev
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2. Set the cross compiler:
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# sudo apt-get install gcc-aarch64-linux-gnu
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# export CROSS_COMPILE=aarch64-linux-gnu-
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3. Clean-up old residuals:
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# make mrproper
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4. Configure the U-Boot:
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# make <defconfig_file>
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- For the Armada-70x0/80x0 DB board use "mvebu_db_armada8k_defconfig"
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- For the Armada-80x0 MacchiatoBin use "make mvebu_mcbin-88f8040_defconfig"
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- For the Armada-3700 DB board use "make mvebu_db-88f3720_defconfig"
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- For the Armada-3700 EsspressoBin use "make mvebu_espressobin-88f3720_defconfig"
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5. Configure the device-tree and build the U-Boot image:
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For the Armada-70x0/80x0 DB board compile u-boot and set the required device-tree using:
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# make DEVICE_TREE=<name>
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NOTE:
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Compilation with "mvebu_db_armada8k_defconfig" requires explicitly exporting DEVICE_TREE
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for the requested board.
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By default, u-boot is compiled with armada-8040-db device-tree.
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Using A80x0 device-tree on A70x0 might break the device.
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In order to prevent this, the required device-tree MUST be set during compilation.
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All device-tree files are located in ./arch/arm/dts/ folder.
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For other DB boards (MacchiatoBin, EspressoBin and 3700 DB board) compile u-boot with
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just default device-tree from defconfig using:
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# make
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NOTE:
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The u-boot.bin should not be used as a stand-alone image.
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The ARM Trusted Firmware (ATF) build process uses this image to generate the
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flash image. See TF-A Build Instructions for Marvell Platforms for more details at:
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https://trustedfirmware-a.readthedocs.io/en/latest/plat/marvell/armada/build.html
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Configuration update
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---------------------
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To update the U-Boot configuration, please refer to doc/README.kconfig
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Permanent ethernet MAC address
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-------------------------------
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Prior flashing new U-Boot version (as part of ATF image) it is suggested to backup
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permanent ethernet MAC address as it is stored only in U-Boot env storage (SPI or eMMC).
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Some boards like EspressoBin have MAC address printed on sticker. To print current MAC
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address run:
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# echo $ethaddr
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MAC addresses 00:51:82:11:22:00, 00:51:82:11:22:01, 00:51:82:11:22:02, 00:51:82:11:22:03
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and F0:AD:4E:03:64:7F are default hardcoded values found in Marvell's and Armbian U-Boot
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forks and therefore *not* unique. Usage of static hardcoded MAC addresses should be avoided.
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When original address is lost (e.g. erased by Armbian boot scripts for EspressoBin) it is
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suggested to generate new random one.
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After flashing new U-Boot version it is suggested to reset U-Boot env variables to default
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and then set correct permanent ethernet MAC address.
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# env default -a
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# setenv ethaddr XX:XX:XX:XX:XX:XX
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# saveenv
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Where XX:XX:XX:XX:XX:XX is permanent ethernet MAC address.
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Recent Linux kernel versions use correct permanent ethernet MAC address from U-Boot env as
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U-Boot will inject it into kernel's device-tree.
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