Threw stuff from the microkernel. Start of moving core parts there.

This commit is contained in:
Erin 2022-11-07 20:29:42 +01:00 committed by ondra05
parent d31f17f07e
commit 4812e59c09
21 changed files with 10 additions and 244 deletions

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@ -1,4 +1,4 @@
use kernel::device_interface::CharacterDevice;
use crate::device_interface::CharacterDevice;
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct DevNull;

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@ -1,4 +1,4 @@
use kernel::device_interface::CharacterDevice;
use crate::device_interface::CharacterDevice;
#[derive(Debug)]
pub struct DevUnicode {

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@ -1,4 +1,4 @@
use kernel::device_interface::CharacterDevice;
use crate::device_interface::CharacterDevice;
#[derive(Debug)]
pub struct DevZero;

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@ -2,4 +2,4 @@ pub mod dev_null;
pub mod dev_unicode;
pub mod dev_zero;
pub use kernel::device_interface::CharacterDevice;
pub use crate::device_interface::CharacterDevice;

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@ -1,9 +1,9 @@
// ! A virtual terminal device.
use crate::device_interface::CharacterDevice;
use core::ops::Not;
use core::sync::atomic::AtomicU32;
use core::sync::atomic::Ordering;
use kernel::device_interface::CharacterDevice;
use crate::pixel_format::Rgba64;

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@ -6,10 +6,10 @@ pub mod pci;
pub use self::Device::*;
use crate::device_interface::{BlockDevice, CharacterDevice};
use crate::devices::dev_vterm::VTerm;
use character_devs::{dev_null::DevNull, dev_unicode::DevUnicode, dev_zero::DevZero};
use hashbrown::HashMap;
use kernel::device_interface::{BlockDevice, CharacterDevice};
use spin::Lazy;
pub static DEVICE_TABLE: Lazy<spin::Mutex<DeviceTable>> =

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@ -1,4 +1,4 @@
use kernel::device_interface::CharacterDevice;
use crate::device_interface::CharacterDevice;
pub struct Serial {
pub base: usize,

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@ -57,6 +57,7 @@ pub mod print;
pub mod serial_print;
pub mod boot_conf;
pub mod device_interface;
pub mod devices;
pub mod driver_traits;
pub mod experiments;

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@ -1,7 +1,7 @@
use {
crate::device_interface::CharacterDevice,
crate::devices::Device::{Block, Character, Vterm},
core::fmt::{Arguments, Error, Write},
kernel::device_interface::CharacterDevice,
};
#[derive(Debug, Clone)]

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@ -1,122 +0,0 @@
//! The allocator to be implemented by ableOS
//!
//! NOTE: All memory regions are taken from https://wiki.osdev.org/Memory_Map_(x86)
#![allow(missing_docs)]
use alloc::alloc::{GlobalAlloc, Layout};
use core::{fmt::Display, ptr::null_mut};
use log::{debug, info};
// const HEAP_START: usize = 600_000_000;
const HEAP_START: usize = 0x00100000;
const BLOCK_SIZE: usize = 1024;
const BLOCK_COUNT: usize = 512;
#[derive(Debug, Clone, Copy)]
pub struct MemoryRegion {
start: usize,
end: usize,
}
impl Display for MemoryRegion {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
writeln!(
f,
"MemoryRegion {{ start: {}, end: {}, size: {} bytes}}",
self.start,
self.end,
self.end - self.start
)
}
}
impl MemoryRegion {
pub fn new(start: usize, end: usize) -> MemoryRegion {
MemoryRegion { start, end }
}
pub fn test_region(&self) -> bool {
unsafe {
let mutptr = self.start as *mut u8;
core::ptr::write(mutptr, 0xFF);
// trace!("{}", core::ptr::read(mutptr));
}
true
}
}
#[derive(Debug, Clone, Copy)]
pub struct AAlloc {
current_region: usize,
memory_regions: [Option<MemoryRegion>; 512],
}
impl AAlloc {
fn test_regions(&self) {
for x in 0..self.current_region {
if let Some(region) = self.memory_regions[x] {
debug!("Region {}: {:?}", x, region);
}
}
}
pub fn add_region(&mut self, mem: MemoryRegion) {
self.memory_regions[self.current_region] = Some(mem);
self.current_region += 1;
}
pub fn intialize() {
info!("Heap Start: {}", HEAP_START);
info!("Heap Size: {}", BLOCK_SIZE * BLOCK_COUNT);
info!("Heap End: {}", HEAP_START + BLOCK_SIZE * BLOCK_COUNT);
let mut aalloc = AAlloc {
current_region: 0,
memory_regions: [None; 512],
};
// BS MEMORY REGION
aalloc.add_region(MemoryRegion::new(HEAP_START, HEAP_START + 10));
aalloc.add_region(MemoryRegion::new(0x00007E00, 0x0007FFFF));
aalloc.add_region(MemoryRegion::new(0x00100000, 0x00EFFFFF));
// ISA Memory Hole
aalloc.add_region(MemoryRegion::new(0x00F00000, 0x00FFFFFF));
aalloc.add_region(MemoryRegion::new(0x0000000100000000, 0x0000000100000000));
aalloc.memory_regions[0].unwrap().test_region();
debug!("{}", aalloc);
}
}
impl Display for AAlloc {
fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
write!(f, "AAlloc {{\n\tcurrent_region: {},\n", self.current_region)?;
for x in 0..self.current_region {
if let Some(region) = self.memory_regions[x] {
write!(f, "\tRegion {}: {}", x, region)?;
}
}
write!(f, "}}")?;
Ok(())
}
}
unsafe impl GlobalAlloc for AAlloc {
unsafe fn alloc(&self, _layout: Layout) -> *mut u8 {
info!("Allocating memory");
info!("{}", _layout.size());
info!("{}", _layout.align());
null_mut()
}
unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout) {
panic!("dealloc should be never called")
}
}

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@ -1,12 +0,0 @@
#![allow(missing_docs)]
pub mod aalloc;
pub use aalloc::*;
/*
#[alloc_error_handler]
fn alloc_error_handler(layout: alloc::alloc::Layout) -> ! {
panic!("allocation error: {:?}", layout)
}
*/

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@ -1,6 +0,0 @@
//! Architecture-specific code.
/// X86 specific code
#[cfg(target_arch = "x86_64")]
#[path = "x86_64/mod.rs"]
pub mod arch;

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@ -1,9 +0,0 @@
///
pub fn sloop() {
loop {
unsafe {
core::arch::asm!("hlt");
}
}
}

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@ -1,44 +1,19 @@
//! The ableOS kernel.
#![feature(alloc_error_handler, arbitrary_enum_discriminant, prelude_import)]
#![feature(alloc_error_handler, prelude_import)]
#![no_std]
#![deny(missing_docs)]
extern crate alloc;
pub mod aalloc;
pub mod allocator;
pub mod arch;
pub mod device_interface;
// pub mod panic;
pub mod proccess;
pub mod syscalls;
pub mod task;
pub mod time;
use core::arch::asm;
use versioning::Version;
/// The number of ticks since the first CPU was started
// pub static TICK: AtomicU64 = AtomicU64::new(0);
/// Kernel's version
pub const KERNEL_VERSION: Version = Version {
major: 0,
minor: 1,
patch: 2,
};
/*
/// called by arch specific timers to tick up all kernel related functions
pub fn tick() {
let mut data = TICK.load(Relaxed);
data = data.wrapping_add(1);
TICK.store(data, Relaxed)
}
*/
/// Cause a software interrupt
pub fn software_int() {
unsafe { asm!("int 54") }
}

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@ -1,11 +0,0 @@
//! Panic-related stuff
use core::panic::PanicInfo;
use log::error;
#[panic_handler]
fn panic_handler(info: &PanicInfo) -> ! {
error!("{}", info);
loop {}
}

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@ -1,14 +0,0 @@
//! Platform agnostic process
/// A process ID
pub type PID = u64;
/// Signals that can be sent to a process
#[repr(C)]
pub enum Signals {
/// Terminate the process
Terminate,
/// Shutdown the process and allow it to shutdown cleanly
Quit,
}

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@ -1,26 +0,0 @@
//!
use crate::proccess::{Signals, PID};
/// All possible system calls
pub enum Syscall {
/// Create a new process and return its PID
CreateProcess,
/// Send a signal to a process
SendSignal(PID, Signals),
/// Get the current process ID
GetPID,
/// Get the current time
GetTime,
/// Set the time
SetTime,
// ListInodes,
// CreateInode,
// RemoveInode,
// OpenInode,
// CloseInode,
}

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@ -1,10 +0,0 @@
//! Time
/// An internal structure that is used to keep track of the time
pub struct Time {
/// The number of seconds since the kernel was started
pub seconds: u64,
/// The number of nanoseconds since the kernel was started
pub nanoseconds: u32,
}