PYNQ-Z2启动NutShell(果壳处理器)——整理补充原官方文档
原文档链接:https://github.com/OSCPU/NutShell
这篇文章暂时先用原文档的英文版,之后会编写一个中文版文档
Compile chisel code
-
before start,
git checkout release-21228
-
Install
mill
. Refer to the Manual section in this guide. -
Run
make verilog BOARD=pynq
to generate verilog code. The output file isbuild/TopMain.v
.
Run programs by simulation
You can either use our ready-to-run image for simulation or build image yourself.
To use ready-to run image (recommended) :
- Run
make emu
to launch simulation. Default image is linux kernel.
Run on FPGA
Sub-directories Overview
fpga
├── board # supported FPGA boards and files to build a Vivado project
├── boot # PS boot flow of zynq and zynqmp
├── lib # HDL sources shared by different boards
├── Makefile
├── Makefile.check
└── NutShell.tcl # wrapper of NutShell core in the Vivado project
Build a Vivado project
- Install Vivado 2019.1, and source the setting of Vivado and SDK
- Run the following command to build a Vivado project
cd fpga
make PRJ=myproject BOARD=pynq STANDALONE=true
Change pynq
to the target board you want. Supported boards are listed under board/
. The project will be created under board/pynq/build/myproject-pynq
. Please note that STANDALONE mode is only used in pynq
board.
-
Open the project with Vivado and generate bitstream.
-
To generate bitstream with vivado 2022.2, please add
(* ram_style = "registers" *)
before arraytlbmd_0
tlbmd_2
tlbmd_3
inEmbeddedTLBMD
module.See here for more details.(* ram_style = "registers" *) reg [120:0] tlbmd_0 [0:0];
prepare SD card
Stand-Alone Mode
In stand-alone mode, control is directly transferred to PL (Program Logic) through FSBL (First Stage BootLoader) after the board is powered on, so that PL has access to on-board peripherals such as SD card, Ethernet, etc., which is necessary to boot Debian and other OS.
We use PYNQ-Z2 board as example to demonstrate how to prepare SD card in stand-alone mode.
Build BOOT.BIN
BOOT.bin is the default filename of packaged hardware-related binary files. Here is a pre-built and currently-used BOOT.BIN.
You can also build it yourself. Please refer to the following process.
-
create a project in Vivado and generate bitstream
cd $(NUTSHELL_HOME)/fpga make PRJ=myprj BOARD=pynq STANDALONE=true vivado
-
generate hardware description file in Vivado
Vivado -> File -> Export -> Export Hardware
-
do bootgen initially
cd $(NUTSHELL_HOME)/fpga make bootgen PRJ=myprj BOARD=pynq STANDALONE=true # this will report some error messages
If you want to do bootgen with Vivado 22.2 please install Vitis first.
-
create project-related links
cd $(NUTSHELL_HOME)/fpga/boot/build/zynq ln -sf $(NUTSHELL_HOME)/fpga/board/pynq/build/myprj-pynq/myprj-pynq.sdk/system_top_wrapper.hdf ps.hdf ln -sf $(NUTSHELL_HOME)/fpga/board/pynq/build/myprj-pynq/myprj-pynq.runs/impl_1/system_top_wrapper.bit fpga.bit # modify FSBL_LOC in $(NUTSHELL_HOME)/fpga/resource/fsbl-loader/Makefile like this: # FSBL_LOC = ../../boot/build/myprj-pynq/fsbl
-
generate BOOT.BIN
cd $(NUTSHELL_HOME)/fpga make bootgen PRJ=myprj BOARD=pynq STANDALONE=true
Build RV_BOOT.bin
RV_BOOT.bin is the default filename of linux-kernel image. Here is a pre-built and currently-used image. You can also build it yourself by riscv-pk and riscv-linux (currently not avaliable to the public).
Build rootfs in SD card
Save the contents before the SD card in case of loss
mount -t vfat /dev/mmcblk0p1 /mnt mkdir sd_card_save cp /mnt/* sd_card_save umount /mnt
- Prepare
//umount the SD card
umount /dev/sdb*
- Partition
# creat two partitions in SD card
sudo fdisk /dev/sdb
- Delete the partition before execute the steps
- New partitions
- Or use
sudo cfdisk /dev/sdb
to create partition
- Format
mkfs.vfat /dev/sdb1
mkfs -t ext4 /dev/sdb2
if you see the following error report after executing mkfs -t ext4 /dev/sdb2
, you can change partition type by using sudo cfdisk /dev/sdb
, see here for more details.
mkfs.ext4: inode_size (128) * inodes_count (0) too big for a
filesystem with 0 blocks, specify higher inode_ratio (-i)
or lower inode count (-N).
- mount
mount -t ext4 /dev/sdb2 /mnt
mkdir /mnt/boot
mount -t vfat /dev/sdb1 /mnt/boot
- copy
copy the files which has been generated before into /dev/sdb1
- BOOT.BIN
- RV_BOOT.BIN
- download the debian base system to
sdb2
withqemu-debootstrap
, and enter the command below.
sudo su
qemu-debootstrap --arch riscv64 unstable /mnt http://deb.debian.org/debian-ports
chroot /mnt /bin/bash
passwd
apt-get update
apt-get install net-tools openssh-server vim build-essential minicom tmux libreadline-dev
exit
-
Add a line of
ttyPS0
in/mnt/etc/securetty
to allow login debian viattyPS0
. See here for more details. -
Add a line of
PermitRootLogin yes
in/mnt/etc/ssh/sshd_config
to enable root login via ssh. See here for more details. -
Add the following lines to
/mnt/etc/fstab
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/mmcblk0p1 /boot vfat defaults 0 2
/dev/mmcblk0p2 / ext4 errors=remount-ro 0 1