U-Boot SPL configures pinmuxes, clocks and other low-level devices. On the Xilinx ZynqMP SoCs the code to do this resides in a file called psu_init_gpl.c which is initially generated by the Xilinx development tools. Add an option to pass these files from the outside (e.g. in the board files). For this to work properly, a patch to U-Boot is needed. However this patch must be applied by each defconfig using BR2_TARGET_UBOOT_ZYNQMP_PSU_INIT_DIR. If it were in boot/uboot/ to be applied unconditionally, it would break the build for configs using a U-Boot version where the patch is already applied. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Cc: Joel Carlson <joelsoncarl@gmail.com> Reviewed-by: Joel Carlson <JoelsonCarl@gmail.com> Tested-by: Joel Carlson <JoelsonCarl@gmail.com> [Thomas: add comment about U-Boot version requirements to use this option.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> |
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arch | ||
board | ||
boot | ||
configs | ||
docs | ||
fs | ||
linux | ||
package | ||
support | ||
system | ||
toolchain | ||
utils | ||
.defconfig | ||
.flake8 | ||
.gitignore | ||
.gitlab-ci.yml | ||
.gitlab-ci.yml.in | ||
CHANGES | ||
Config.in | ||
Config.in.legacy | ||
COPYING | ||
DEVELOPERS | ||
Makefile | ||
Makefile.legacy | ||
README |
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 Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches