[Buildroot] [PATCH v2 1/4] boot/uboot: introduce BR2_TARGET_UBOOT_FORMAT_DTB
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Sun Jul 18 20:13:41 UTC 2021
On Tue, 15 Jun 2021 22:03:39 -0700
Drew Fustini <drew at beagleboard.org> wrote:
> If U-Boot CONFIG_OF_SEPARATE is defined [1], then the device tree will
> be built and placed in a u-boot.dtb file alongside u-boot.bin.
>
> When BR2_TARGET_UBOOT_FORMAT_DTB is enabled, buildroot will copy
> u-boot.dtb to $(BINARIES_DIR).
>
> This is useful for RISC-V platforms that want to build OpenSBI with an
> external DTB by using FW_FDT_PATH [2].
>
> [1] https://github.com/u-boot/u-boot/blob/master/doc/README.fdt-control
> [2] https://github.com/riscv/opensbi/blob/master/docs/firmware/fw.md
>
> Reviewed-by: Alistair Francis <alistair.francis at wdc.com>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
> Signed-off-by: Drew Fustini <drew at beagleboard.org>
> ---
> boot/uboot/Config.in | 3 +++
> boot/uboot/uboot.mk | 4 ++++
> 2 files changed, 7 insertions(+)
This new option is not exactly another U-Boot format, u-boot.dtb does
not include the U-Boot code itself. But oh well, your solution is very
simple, and fits well with what already exists, so I've applied.
Thanks!
Thomas
--
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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