From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alistair Francis Date: Tue, 15 Jun 2021 17:56:00 +1000 Subject: [Buildroot] [PATCH 2/4] boot/opensbi: introduce BR2_TARGET_OPENSBI_FW_FDT_PATH In-Reply-To: <20210615001750.421889-3-drew@beagleboard.org> References: <20210615001750.421889-1-drew@beagleboard.org> <20210615001750.421889-3-drew@beagleboard.org> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net On Tue, Jun 15, 2021 at 10:18 AM Drew Fustini 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/lentinj/u-boot/blob/master/doc/README.fdt-control > [2] https://github.com/riscv/opensbi/blob/master/docs/firmware/fw.md > > Signed-off-by: Drew Fustini Reviewed-by: Alistair Francis Alistair > --- > boot/opensbi/Config.in | 10 ++++++++++ > boot/opensbi/opensbi.mk | 3 +++ > 2 files changed, 13 insertions(+) > > diff --git a/boot/opensbi/Config.in b/boot/opensbi/Config.in > index 632eeec88d77..bd4bd5ee6175 100644 > --- a/boot/opensbi/Config.in > +++ b/boot/opensbi/Config.in > @@ -109,4 +109,14 @@ config BR2_TARGET_OPENSBI_UBOOT_PAYLOAD > help > Build OpenSBI with the U-Boot as a Payload. > > +config BR2_TARGET_OPENSBI_FW_FDT_PATH > + bool "Include U-Boot DTB in OpenSBI Payload" > + depends on BR2_TARGET_OPENSBI_PLAT != "" > + depends on BR2_TARGET_UBOOT > + depends on BR2_TARGET_OPENSBI_UBOOT_PAYLOAD > + select BR2_TARGET_OPENSBI_INSTALL_PAYLOAD_IMG > + help > + Build OpenSBI with FW_FDT_PATH set to $(BINARIES_DIR)/u-boot.dtb > + Note that CONFIG_OF_SEPARATE must be set in the u-boot kconfig. > + > endif > diff --git a/boot/opensbi/opensbi.mk b/boot/opensbi/opensbi.mk > index a525b8aea348..8e055633a82d 100644 > --- a/boot/opensbi/opensbi.mk > +++ b/boot/opensbi/opensbi.mk > @@ -46,6 +46,9 @@ endif > ifeq ($(BR2_TARGET_OPENSBI_UBOOT_PAYLOAD),y) > OPENSBI_DEPENDENCIES += uboot > OPENSBI_MAKE_ENV += FW_PAYLOAD_PATH="$(BINARIES_DIR)/u-boot.bin" > +ifeq ($(BR2_TARGET_OPENSBI_FW_FDT_PATH),y) > +OPENSBI_MAKE_ENV += FW_FDT_PATH="$(BINARIES_DIR)/u-boot.dtb" > +endif > endif > > define OPENSBI_BUILD_CMDS > -- > 2.27.0 > > _______________________________________________ > buildroot mailing list > buildroot at busybox.net > http://lists.busybox.net/mailman/listinfo/buildroot