Lab 01

NCTU OSDI Lab 1: Hello World

Documentation: Lab 1

Lab 1 Demo Release

Required

• Implement the 3 basic steps.
  • Let only one core proceed, and let others enter a busy loop.
  • Initialize the BSS segment.
  • Set the stack pointer to an appropriate position.
• Following UART to set up mini UART.
• Implement a simple shell, it should support the following commands.

  command	Description
  help	print all available commands
  hello	print Hello World!

Elective

• Write a program or script on your host computer which can read a text file and write the content to rpi3.
• Add <timestamp> command, it print current timestamp.
• Add <reboot> command.

Questions

• Is it reasonable to accelerate booting speed by parallel programming during the initialization stage?
• Point out the difference between bare-metal programming and programming on top of operating system.