uCore-SMP

A Symmetric Multiprocessing OS Kernel over RISC-V

Supported Devices

• HiFive Unmatched (fu740)
• QEMU

Documentation

click here

Usage

Running on HiFive Unmatched (fu740)

This version is only available on xiji gitlab.

There are some versions that can pass the test, they are tagged as fu740-test-vXXX.

git clone https://gitlab.eduxiji.net/hlw2014/ucore-smp.git
cd uCore-SMP

# the fu740-test branch exists only on xiji gitlab, not on github
git checkout fu740-test
(or fu740-test-v0.5, fu740-test-v0.4 ...)

# this command will generate a kernel image called 'os.bin' in the root directory of the project, which can be loaded into memory via u-boot.
make all

Running on QEMU

git clone https://github.com/NKU-EmbeddedSystem/uCore-SMP.git
(or https://gitlab.eduxiji.net/hlw2014/ucore-smp.git)

cd uCore-SMP

# QEMU version is on fu740 branch
git checkout fu740

# make user programs (e.g. shell)
make user

# make kernel
make

# run with QEMU
make run

Run python3 on uCore-SMP

python3 package from https://pkgs.alpinelinux.org/package/edge/main/riscv64/python3

we can run python3 scripts on uCore-SMP, here is a demo:

you can follow these steps to run python3 on uCore-SMP

1. checkout the fu740-python branch.
2. download the python rootfs image from the release file list.
3. unzip the rootfs image and move it to ./user/riscv64-rootfs.img or write it to your sdcard.
4. run uCore-SMP on fu740 or QEMU according to the Usage section.

The test code is as follows.

#!/usr/bin/python3

logo = '''
              _   _                 
  _ __  _   _| |_| |__   ___  _ __  
 | '_ \| | | | __| '_ \ / _ \| '_ \ 
 | |_) | |_| | |_| | | | (_) | | | |
 | .__/ \__, |\__|_| |_|\___/|_| |_|
 |_|    |___/                       
                          _                    
   ___  _ __         _ __(_)___  ___    __   __
  / _ \| '_ \       | '__| / __|/ __|____ \ / /
 | (_) | | | |      | |  | \__ \ (_______\ V / 
  \___/|_| |_|      |_|  |_|___/\___|     \_/  
                                               
'''

import json
import re


def print_bar(name):
	print('========', name, '========')


def json_decode_encode():
	data = {'a': 1, 'b': 2}
	s = json.dumps(data)
	restore_data = json.loads(s)
	print('dumps:', s)
	print('loads:', restore_data)


def hanoi(n, x, y, z):
	if n == 1:
		print(x, "->", z)
	else:
		hanoi(n - 1, x, z, y)
		print(x, "->", z)
		hanoi(n - 1, y, x, z)


def sort_random_list():
	l = [3, 10, 5, 3, 3, 4, 10, 10, 8, 0]
	print('before:', l)
	l.sort()
	print('after: ', l)


def re_test():
	line = "Cats are smarter than dogs"
	matchObj = re.match(r'(.*) are (.*?) .*', line, re.M | re.I)
	if matchObj:
		print("matchObj.group() : ", matchObj.group())
		print("matchObj.group(1) : ", matchObj.group(1))
		print("matchObj.group(2) : ", matchObj.group(2))
	else:
		print("No match!!")


if __name__ == '__main__':
	print(logo)
	print_bar('import test (json)')
	json_decode_encode()
	print_bar('recursion test (hanoi)')
	hanoi(3, 'x', 'y', 'z')
	print_bar('algorithm test (sort)')
	sort_random_list()
	print_bar('algorithm test (regular expression)')
	re_test()