https://github.com/xuantie-rv/buildroot
Buildroot customized for Xuantie™ RISC-V CPU
https://github.com/xuantie-rv/buildroot
Last synced: 11 months ago
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Buildroot customized for Xuantie™ RISC-V CPU
- Host: GitHub
- URL: https://github.com/xuantie-rv/buildroot
- Owner: XUANTIE-RV
- License: apache-2.0
- Created: 2021-10-18T01:33:24.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2022-01-17T06:20:10.000Z (over 4 years ago)
- Last Synced: 2025-05-08T00:49:02.550Z (about 1 year ago)
- Language: Roff
- Homepage:
- Size: 62.7 MB
- Stars: 44
- Watchers: 6
- Forks: 6
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Buildroot
For Xuantie CPU Series Kernel build
# Introduction
Buildroot is a tool that simplifies and automates the process of building a complete Linux system for an embedded system, using cross-compilation. In order to achieve this, Buildroot is able to generate a cross-compilation toolchain, a root filesystem, a Linux kernel image and a bootloader for your target. Buildroot can be used for any combination of these options, independently (you can for example use an existing cross-compilation toolchain, and build only your root filesystem with Buildroot).
This repositery is based on buildroot official repo and project-specific customization is made for Xuantie CPU Series' opensource ecosystem.
# Quick Start
## Chip & Board
ICE is a Xuantie C910 based high-performance SoC board developed by T-Head. The ICE SoC has integrated 3 Xuantie C910 cores (RISC-V 64) and 1 GPU core, featuring speed and intelligence with a high cost-effective ratio. The chip can provide 4K@60 HEVC/AVC/JPEG decoding ability and varieties of high-speed interfaces and peripherals for controlling and data exchange; suits for 3D graphics, visual AI, and multimedia processing.
Graph 2. ICE chip
For more information about Xuantie 910 CPU core IP, please check: [**Xuantie C910 introduction**](https://occ.t-head.cn/vendor/cpu/index?spm=a2cl5.14294226.0.0.6700df2098XZyN&id=3806788968558108672)
More detials ref to: [**RVB-ICE**](https://occ.t-head.cn/community/risc_v_en/detail?id=RVB-ICE)
## Build boot.ext4 (kernel + opensbi + dtb) & rootfs
(Tested enviornment - ubuntu 16.04 amd64)
```bash
git clone https://gitlab.com/c-sky/buildroot.git
cd buildroot
make CONF=thead_9xxf_enhanced_5.10_glibc_br_defconfig
export PATH=$PATH:`pwd`/host/opt/ext-toolchain/bin
```
Then you will get:
```bash
ls -l thead_9xxf_enhanced_5.10_glibc_br_defconfig/images/boot.ext4
ls -l thead_9xxf_enhanced_5.10_glibc_br_defconfig/images/rootfs.ext2
```
## Build u-boot
```bash
git clone "https://gitee.com/thead-linux/u-boot.git" -b master
make ice_rvb_c910_defconfig
make -j ARCH=riscv CROSS_COMPILE=riscv64-unknown-linux-gnu-
```
Then you will get:
```bash
u-boot-with-spl.bin
```
## Prepare flash tools in host
Using pip command install thead-tools into your system. (Please using python2)
```bash
sudo apt install python-pip
sudo apt install fastboot
sudo pip install thead-tools
sudo pip install -i https://pypi.tuna.tsinghua.edu.cn/simple thead-tools
```
## Flash the u-boot
Connect RVB-ICE UART with USB-Type-C to your host PC, ref:
[RVB-ICE Type-C UART](https://occ.t-head.cn/community/risc_v_en/detail?id=RVB-ICE)
```bash
root@linux > thead cct uart
uart device list:
/dev/ttyUSB0 - USB-Serial Controller
/dev/ttyUSB1 - USB-Serial Controller
root@linux > thead cct -u /dev/ttyUSB0 list
Wait .....................
CCT Version: 2
memory device list:
dev = ram0 , size = 256.0KB
dev = emmc0 , size = 2.0MB
dev = emmc1 , size = 2.0MB
dev = emmc2 , size = 3.7GB
```
We will put uboot into the emmc0:
```bash
thead cct -u /dev/ttyUSB0 download -f u-boot-with-spl.bin -d emmc0
CCT Version: 2
Send file 'u-boot-with-spl.bin' to 21:0 ...
Writing at 0x00009800... (3%)
Reset the board, and you will see:
U-Boot 2020.01-g6cc5d59b0d (Dec 20 2020 - 08:37:37 +0000)
CPU: rv64imafdcvsu
Model: T-HEAD c910 ice
DRAM: 4 GiB
GPU ChipDate is:0x20151217
GPU Frequency is:500000KHz
NPU ChipDate is:0x20190514
DPU ChipDate is:0x20161213
MMC: mmc0@3fffb0000: 0
Loading Environment from MMC... OK
In: serial@3fff73000
Out: serial@3fff73000
Err: serial@3fff73000
Net:
Warning: ethernet@3fffc0000 (eth0) using random MAC address - e6:e2:ea:7a:30:ce
eth0: ethernet@3fffc0000
Hit any key to stop autoboot: 1
```
## Prepare u-boot env setting
In u-boot UART console to setup fastboot UDP server.
```bash
env default -a
setenv uuid_rootfs "80a5a8e9-c744-491a-93c1-4f4194fd690b"
setenv partitions "name=table,size=2031KB"
setenv partitions "$partitions;name=boot,size=60MiB,type=boot"
setenv partitions "$partitions;name=root,size=-,type=linux,uuid=$uuid_rootfs"
gpt write mmc 0 $partitions
setenv ethaddr 00:a0:a0:a0:a0:a1
setenv ipaddr 192.168.1.100 (Your IP)
setenv netmask 255.255.255.0
saveenv
fastboot udp
```
## Using fastboot install boot.ext4 & rootfs
```bash
fastboot -s udp:192.168.1.100 flash boot boot.ext4
fastboot -s udp:192.168.1.100 flash root rootfs.ext2
```
## Reset the board
Power on the board, you will get:
```bash
[ 1.635084] VFS: Mounted root (ext4 filesystem) readonly on device 254:0.
[ 1.638991] devtmpfs: mounted
[ 1.671150] Freeing unused kernel memory: 252K
[ 1.729521] Run /sbin/init as init process
[ 1.861620] EXT4-fs (vda): warning: mounting unchecked fs, running e2fsck is recommended
[ 1.866438] EXT4-fs (vda): re-mounted. Opts: (null)
Starting syslogd: OK
Starting klogd: OK
Running sysctl: OK
Starting mdev... OK
Initializing random number generator: OK
Saving random seed: [ 5.720512] random: dd: uninitialized urandom read (512 bytes read)
OK
Starting network: OK
Starting telnetd: OK
processor : 0
hart : 0
isa : rv64imafdcsu
mmu : sv39
model name : T-HEAD C910
freq : 1.2GHz
icache : 64kB
dcache : 64kB
l2cache : 2MB
tlb : 1024 4-ways
cache line : 64Bytes
address sizes : 40 bits physical, 39 bits virtual
vector version : 0.7.1
processor : 1
hart : 1
isa : rv64imafdcsu
mmu : sv39
model name : T-HEAD C910
freq : 1.2GHz
icache : 64kB
dcache : 64kB
l2cache : 2MB
tlb : 1024 4-ways
cache line : 64Bytes
address sizes : 40 bits physical, 39 bits virtual
vector version : 0.7.1
Skip the ci test
Welcome to Buildroot
buildroot login:
```
# Resources
- [https://occ.t-head.cn/community/risc_v_en/detail?id=RVB-ICE](https://occ.t-head.cn/community/risc_v_en/detail?id=RVB-ICE)
- [https://occ.t-head.cn/community/risc_v](https://occ.t-head.cn/community/risc_v)
- [https://occ.t-head.cn/vendor/cpu/cpuList](https://occ.t-head.cn/vendor/cpu/cpuList)
- [https://github.com/T-head-Semi/u-boot](https://github.com/T-head-Semi/u-boot)
- [https://github.com/T-head-Semi/opensbi](https://github.com/T-head-Semi/opensbi)
- [https://github.com/T-head-Semi/linux](https://github.com/T-head-Semi/linux)