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@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Drew Fustini <drew@beagleboard.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Until now, whenever a BR2_TARGET_OPENSBI_PLAT value was specified,
opensbi.mk was assuming that both fw_jump and fw_dynamic would be
produced. However, this is not the case: the OpenSBI per-platform
config.mk can decide which image to build.
As an example, the config.mk for VIC7100-based BeagleV only enables
producing the fw_payload image.
This commit adds three options to enable the installation of images:
one for fw_jump, one for fw_dynamic, one for fw_payload.
The options for fw_jump and fw_dynamic are "default y" when
BR2_TARGET_OPENSBI_PLAT is not empty, to preserve existing behavior.
The option for fw_payload is forcefully selected when either Linux or
U-Boot are selected as payloads.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
The opensbi package already allows to use Linux as a payload for
OpenSBI, but in some cases, U-Boot as payload is useful. This commit
adds a BR2_TARGET_OPENSBI_UBOOT_PAYLOAD option, modeled after the
existing BR2_TARGET_OPENSBI_LINUX_PAYLOAD.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
OpenSBI contains platform-specific code, so very much like Linux,
U-Boot or other bootloaders, using the upstream version of OpenSBI
will very often not be sufficient.
This commit therefore adds the possibility of specifying a custom
version of OpenSBI, either custom from upstream, custom tarball, or
custom from Git. Support for other version control systems has not
been implemented for now, but could be added later if needed.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
[Thomas:
- Config.in: move the BR2_TARGET_OPENSBI_PLAT dependency to a
"depends on", there's no need to have an if...endif block just for
that.
- Config.in: drop the BR2_TARGET_OPENSBI_LIBRARY_ONLY dependency,
since this option doesn't exist
- opensbi.mk: don't use qstrip on BR2_TARGET_OPENSBI_LINUX_PAYLOAD,
since it's a boolean option
- opensbi.mk: use += when adding linux to DEPENDENCIES
- opensbki.mk: refactor the firmware file installation with a loop]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
OpenSBI is a much improved alternative to BBL (riscv-pk). Add OpenSBI
support to buildroot.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
[Thomas:
- disable target installation, as we install nothing
- enable staging installation
- enable images installation only when needed
- improve the comment about the staging installation]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
