58d8b69fcb
Change the partition order so that the /boot partition is the first partition. This allows u-boots auto boot to work as expected. FSBL will still load OpenSBI as it uses GPT UUIDs to match the boot partition. 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-opensbi -e core-image-minimal
$ bmaptool create ./freedom-u540-opensbi-201812181337-mmcblk.direct > image.bmap
$ sudo bmaptool copy --bmap image.bmap ./freedom-u540-opensbi-201812181337-mmcblk.direct /dev/sdd
Maintainer(s)
- Khem Raj
<raj dot khem at gmail.com>