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Enables U-Boot and required OpenSBI builds for the VisionFive2. Changes the sdcard.img to use GPT and adds the SPL and U-Boot to partitions specified in U-Boot's documentation for the board: https://docs.u-boot.org/en/v2024.01/board/starfive/visionfive2.html U-Boot config uses BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME with value "u-boot.itb". Using BR2_TARGET_UBOOT_FORMAT_ITB fails, because the build does not support u-boot.itb make target. Signed-off-by: Lukasz Tekieli <tekieli.lukasz@gmail.com> [Peter: document boot mode setting, add U-Boot documentation link] Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches