b7fe5fd97b
Update the Freedom U540 defconfig to work with:
- AMD GPUs attached with PCIe MicroSemi Expansion board
- Including Wayland and X11 display via HDMI
- USB input attached with PCIe MicroSemi Expansion board
At the same time we are also swapping to use the config output of
savedefconfig instead of copying the entire .config file. This
simplifies the defconfig management.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
meta-riscv
RISC-V Architecture Layer for OpenEmbedded/Yocto
Description
This is the general hardware specific BSP overlay for the RISC-V based devices.
More information can be found at: https://riscv.org/ (Official Site)
The core BSP part of meta-riscv should work with different OpenEmbedded/Yocto distributions and layer stacks, such as:
- Distro-less (only with OE-Core).
- Angstrom.
- Yocto/Poky (main focus of testing).
Dependencies
This layer depends on:
- URI: git://github.com/openembedded/openembedded-core
- branch: master
- revision: HEAD
- URI: git://github.com/openembedded/bitbake
- branch: master
- revision: HEAD
Quick Start
Note: You only need this if you do not have an existing Yocto Project build environment.
Make sure to install the repo command by Google first.
Create workspace
mkdir riscv-yocto && cd riscv-yocto
repo init -u git://github.com/riscv/meta-riscv -b master -m tools/manifests/riscv-yocto.xml
repo sync
repo start work --all
Update existing workspace
In order to bring all layers uptodate with upstream
cd riscv-yocto
repo sync
repo rebase
Setup Build Environment
. ./meta-riscv/setup.sh
Build Image
A console-only image
bitbake core-image-full-cmdline
Basic image without X support suitable for Linux Standard Base (LSB) implementations. It includes the full meta-toolchain, plus development headers and libraries to form a standalone (on device) SDK
bitbake core-image-lsb-sdk
Run in QEMU
runqemu nographic
Running wic.gz image on hardware
The output of the build will be a <image>.wic.gz file. You can write this file to an sd card using:
$ zcat <image>-<machine>.wic.gz | sudo dd of=/dev/sdX bs=4M iflag=fullblock oflag=direct conv=fsync status=progress
Sparse Image Creation
The output of the build can also be written to an SD card using bmaptool, the steps to do this are below:
$ MACHINE=freedom-u540 wic create freedom-u540-bbl -e core-image-minimal
$ bmaptool create ./freedom-u540-bbl-201812181337-mmcblk.direct > image.bmap
$ sudo bmaptool copy --bmap image.bmap ./freedom-u540-bbl-201812181337-mmcblk.direct /dev/sdd
Maintainer(s)
- Khem Raj
<raj dot khem at gmail.com>