[Buildroot] [PATCH v2 0/6] Add RISC-V 64-bit architecture support
Mark Corbin
mark.corbin at embecosm.com
Wed Sep 12 10:22:50 UTC 2018
This patch set adds support for the RISC-V 64-bit architecture.
Full RISC-V support is not expected in the upstream kernel until
the 4.19 release. As a result the ability to select custom toolchain
headers has been added. This allows a RISC-V toolchain to be built
against kernel headers from a git repository without having to build
a kernel.
A new method for overriding the BR2_GCC_TARGET_* settings has been
added. These variables are copied to corresponding GCC_TARGET_*
variables which may then be modified using architecture specific
makefiles (arch/arch.mk.<arch>). This allows a custom architecture
string to be built for the RISC-V from the various optional ISA
extensions. All package makefiles that were using the BR2_GCC_TARGET_*
variables have been updated to use the GCC_TARGET_* versions. Any new
makefiles must use the new variables.
The default glibc library paths for RISC-V are /lib64/<abi> and
/usr/lib64/<abi>. An architecture specific patch has been applied
to glibc.mk to override these settings and allow shared libraries to
be located by packages at runtime.
The riscv-pk (Proxy Kernel) package has been added to provide the
Berkeley Boot Loader (BBL) for booting RISC-V kernels.
A new defconfig has been added which can build a qemu-bootable
RISC-V 64-bit system.
Mark Corbin (6):
linux: add hash file
package/linux-headers: add support for custom headers
arch: allow GCC target options to be optionally overwritten
arch: add support for RISC-V 64-bit (riscv64) architecture
boot/riscv-pk: add bootloader for RISC-V architecture
configs/qemu: add qemu_riscv64_virt_defconfig
DEVELOPERS | 7 ++
Makefile | 5 +-
arch/Config.in | 15 +++
arch/Config.in.riscv | 104 ++++++++++++++++++
arch/arch.mk | 17 +++
arch/arch.mk.riscv | 30 +++++
board/qemu/riscv64-virt/linux.config | 23 ++++
board/qemu/riscv64-virt/readme.txt | 7 ++
boot/Config.in | 1 +
boot/riscv-pk/Config.in | 13 +++
boot/riscv-pk/riscv-pk.mk | 33 ++++++
configs/qemu_riscv64_virt_defconfig | 24 ++++
linux/linux.hash | 9 ++
package/binutils/Config.in.host | 2 +
package/ffmpeg/ffmpeg.mk | 8 +-
package/freerdp/freerdp.mk | 2 +-
package/gcc/gcc.mk | 27 ++---
package/glibc/glibc.mk | 30 +++--
package/kodi/kodi.mk | 2 +-
package/kvm-unit-tests/kvm-unit-tests.mk | 2 +-
package/linux-headers/Config.in.host | 45 +++++++-
package/linux-headers/linux-headers.hash | 1 +
package/linux-headers/linux-headers.mk | 94 +++++++++-------
package/meson/meson.mk | 2 +-
package/nodejs/nodejs.mk | 2 +-
package/tvheadend/tvheadend.mk | 2 +-
package/valgrind/valgrind.mk | 2 +-
toolchain/toolchain-buildroot/Config.in | 6 +-
.../pkg-toolchain-external.mk | 22 ++--
29 files changed, 447 insertions(+), 90 deletions(-)
create mode 100644 arch/Config.in.riscv
create mode 100644 arch/arch.mk
create mode 100644 arch/arch.mk.riscv
create mode 100644 board/qemu/riscv64-virt/linux.config
create mode 100644 board/qemu/riscv64-virt/readme.txt
create mode 100644 boot/riscv-pk/Config.in
create mode 100644 boot/riscv-pk/riscv-pk.mk
create mode 100644 configs/qemu_riscv64_virt_defconfig
create mode 100644 linux/linux.hash
create mode 120000 package/linux-headers/linux-headers.hash
--
2.17.1
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