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rust-raspberrypi-OS-tutorials/0E_global_println/README.md

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Tutorial 0E - Global println!

Coming soon!

This lesson will teach about:

  • Restructuring the current codebase.
  • Realizing global println! and print! macros by reusing macros from the Rust standard library.
  • The NullLock, a wrapper that allows using global static variables without explicit need for unsafe {} code. It is a teaching concept that is only valid in single-threaded IRQ-disabled environments. However, it already lays the groundwork for the introduction of proper locking mechanisms, e.g. real Spinlocks.
ferris@box:~$ make raspboot

[0] UART is live!
[1] Press a key to continue booting... Greetings fellow Rustacean!
[2] Switching MMU on now... MMU online.
[i] Memory layout:
      0x00000000 - 0x0007FFFF |  512 KiB | Kernel stack
      0x00080000 - 0x00082FFF |   12 KiB | Kernel code and RO data
      0x00083000 - 0x00085007 |    8 KiB | Kernel data and BSS
      0x3F000000 - 0x3FFFFFFF |   16 MiB | Device MMIO

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