AbleOS/ableos
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Merge branch 'master' into master

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This commit is contained in:
IntoTheNight 2023-07-13 14:25:20 +00:00
parent 6a404b8227 a9350952b7
commit bea92d996c
12 changed files with 1800 additions and 221 deletions
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1704
Cargo.lock generated
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0
a.out
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2
kernel/Cargo.toml
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@ -7,7 +7,7 @@ version = "0.2.0"
[dependencies]
hbvm = { git = "https://git.ablecorp.us/ableos/holey-bytes" }
hbasm = { git = "https://git.ablecorp.us/ableos/holey-bytes" }
# hbasm = { git = "https://git.ablecorp.us/ableos/holey-bytes" }
embedded-graphics = "0.7.1"

2
kernel/lds/x86_64.ld
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@ -48,7 +48,7 @@ SECTIONS
. = ALIGN(4K);
PROVIDE(_initial_kernel_heap_start = .);
/* PROVIDE(_initial_kernel_heap_size = 1024 * 1024); */
PROVIDE(_initial_kernel_heap_size = 1024 * 4096);
PROVIDE(_initial_kernel_heap_size = 1024 * 4096 * 100);
. += _initial_kernel_heap_size;
} :data
}

45
kernel/src/host.rs
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@ -63,49 +63,26 @@ pub enum HostError {
// // pub fn rpc_register(_engine: &mut Engine) {}
// // pub fn rpc_call(_engine: &mut Engine) {}
use log::error;
use hbvm::vm::{
mem::{Memory, MemoryAccessReason, PageSize},
trap::HandleTrap,
value::Value,
};
use {hbvm::vm::mem::HandlePageFault, log::error};
/// AbleOS HBVM traphandler
pub struct TrapHandler;
impl HandleTrap for TrapHandler {
impl HandlePageFault for TrapHandler {
fn page_fault(
&mut self,
mar: MemoryAccessReason,
memory: &mut Memory,
reason: hbvm::vm::mem::MemoryAccessReason,
memory: &mut hbvm::vm::mem::Memory,
vaddr: u64,
size: PageSize,
size: hbvm::vm::mem::PageSize,
dataptr: *mut u8,
) -> bool {
error!(
"MemoryAccessReason: {}
Memory: {:?}
VAddr: {}
Size: {:?}
DataPTR: {:?}",
mar, memory, vaddr, size, dataptr
"REASON: {}
memory: {:?}
vaddr: {}
size: {:?}
Dataptr {:?}",
reason, memory, vaddr, size, dataptr
);
false
}
fn invalid_op(&mut self, _: &mut [Value; 256], _: &mut usize, _: &mut Memory, _: u8) -> bool
where
Self: Sized,
{
log::trace!("Invalid opcode");
false
}
fn ecall(&mut self, _: &mut [Value; 256], _: &mut usize, _: &mut Memory)
where
Self: Sized,
{
log::trace!("ableOS system call made");
}
}

72
kernel/src/kmain.rs
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@ -1,15 +1,12 @@
//! AbleOS Kernel Entrypoint
use crate::capabilities;
// use crate::arch::sloop;
use {
crate::{
arch::logging::SERIAL_CONSOLE,
bootmodules::{build_cmd, BootModules},
capabilities,
device_tree::DeviceTree,
scheduler::Scheduler,
},
alloc::format,
log::{debug, info, trace},
@ -43,69 +40,12 @@ pub fn kmain(cmdline: &str, boot_modules: BootModules) -> ! {
capabilities::example();
// TODO: change this to a driver
{
let mut prog = alloc::vec![];
let mut code = alloc::string::String::new();
let mut sc = SERIAL_CONSOLE.lock();
loop {
match sc.receive() {
b'\r' => {
code.push('\n');
sc.send(b'\r');
sc.send(b'\n');
match hbasm::assembly(&code, &mut prog) {
Ok(_) => {
use hbvm::validate::validate;
match validate(&prog) {
Err(_e) => {
// log::error!("Program validation error: {e:?}");
}
Ok(_) => {
// log::info!("valid program");
// use {crate::host::TrapHandler, hbvm::vm::Vm};
let mut sched = Scheduler::new();
sched.new_process(prog.clone());
sched.scheduler_run();
// let mut vm;
// unsafe {
// vm = Vm::new_unchecked(&prog, TrapHandler);
// vm.memory.insert_test_page();
// }
// log::info!("Program interrupt: {:?}", vm.run());
// log::debug!("{:?}", vm.registers);
}
}
sc.send(b'>');
}
Err(_e) => {
// log::error!(
// "Error {:?} at {:?} (`{}`)",
// e.kind,
// e.span.clone(),
// &code[e.span],
// );
for x in "err".as_bytes() {
sc.send(*x);
}
}
}
code = alloc::string::String::new();
}
byte => {
code.push(byte as char);
sc.send(byte);
}
}
}
}
let mut sched = Scheduler::new();
// AHEM that isn't a valid HBVM program
sched.new_process(boot_modules[0].bytes.clone());
sched.new_process(boot_modules[1].bytes.clone());
sched.run();
// sloop();
}

19
kernel/src/logger.rs
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@ -16,16 +16,17 @@ impl log::Log for Logger {
fn log(&self, record: &log::Record) {
let lvl = record.level();
let lvl_color = match lvl {
Level::Error => "160",
Level::Warn => "172",
Level::Info => "47",
Level::Debug => "25",
Level::Trace => "103",
};
let module = record.module_path().unwrap_or_default();
let line = record.line().unwrap_or_default();
crate::arch::log(format_args!(
"\x1b[38;5;{}m{lvl}\x1b[0m [{}]: {}\r\n",
match lvl {
Level::Error => "160",
Level::Warn => "172",
Level::Info => "47",
Level::Debug => "25",
Level::Trace => "103",
},
record.module_path().unwrap_or_default(),
"\x1b[38;5;{lvl_color}m{lvl}\x1b[0m [{module}:{line}]: {}\r\n",
record.args(),
))
.expect("write to serial console");

17
kernel/src/scheduler.rs
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@ -4,21 +4,19 @@ use {
};
use {crate::host::TrapHandler, hbvm::vm::Vm};
const TIMER_QUOTIENT: usize = 100;
pub struct Scheduler<'a> {
data: VecDeque<Vm<'a, TrapHandler>>,
data: VecDeque<Vm<'a, TrapHandler, TIMER_QUOTIENT>>,
}
// NOTE: This is a very simple schduler and it sucks and should be replaced with a better one
// Written By Yours Truly: Munir
impl Scheduler<'_> {
pub fn new() -> Self {
Self {
data: VecDeque::new(),
}
}
pub fn new_process(&mut self, program: Vec<u8>) {
@ -41,10 +39,19 @@ impl Scheduler<'_> {
}
}
pub fn scheduler_run(&mut self) -> Option<u32> {
pub fn run(&mut self) -> ! {
loop {
// If there are no programs to run then sleep.
if self.data.is_empty() {
use crate::arch::sloop;
sloop();
}
let mut prog = self.data.pop_front().unwrap();
prog.run().unwrap();
// log::info!("VM registers {:?}", prog.registers);
log::info!("Scheduled program");
self.data.push_back(prog);
}
}

15
repbuild/Cargo.toml
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@ -4,7 +4,16 @@ version = "0.2.0"
edition = "2021"
[dependencies]
env_logger = "0.10"
cpio_reader = "0.1"
derive_more = "0.99"
env_logger = "0.10"
error-stack = "0.2"
fatfs = "0.3"
log = "0.4"
fatfs = "0.3"
log = "0.4"
rpm = "0.11"
zstd = "0.12"
[dependencies.reqwest]
version = "0.11"
default-features = false
features = ["rustls-tls", "blocking"]

BIN
repbuild/inf_loop.hb Normal file
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4
repbuild/limine.cfg
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@ -18,8 +18,8 @@ TERM_BACKDROP=008080
# Setting a default resolution for the framebuffer
RESOLUTION=1024x768x24
MODULE_PATH=boot:///background.bmp
MODULE_PATH=boot:///inf_loop.hb
MODULE_CMDLINE="diskid=123456789"
MODULE_PATH=boot:///background.bmp
MODULE_PATH=boot:///inf_loop.hb
MODULE_CMDLINE=""

141
repbuild/src/main.rs
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@ -1,9 +1,14 @@
use std::fs;
use {
error_stack::{bail, report, Context, IntoReport, Result, ResultExt},
derive_more::{Deref, DerefMut, Display},
error_stack::{bail, ensure, report, Context, IntoReport, Result, ResultExt},
fatfs::{FileSystem, FormatVolumeOptions, FsOptions, ReadWriteSeek},
std::{fmt::Display, fs::File, io, path::Path, process::Command},
std::{
fmt::Display,
fs::File,
io::{self, Write},
path::Path,
process::Command,
},
};
fn main() -> Result<(), Error> {
@ -110,12 +115,18 @@ fn get_fs() -> Result<FileSystem<impl ReadWriteSeek>, io::Error> {
&mut File::open("repbuild/background.bmp")?,
&mut fs.root_dir().create_file("background.bmp")?,
)?;
io::copy(
&mut File::open("repbuild/inf_loop.hb")?,
&mut fs.root_dir().create_file("inf_loop.hb")?,
)?;
drop(bootdir);
Ok(fs)
}
fn build(release: bool, target: Target) -> Result<(), Error> {
fetch_ovmf().change_context(Error::OvmfFetch)?;
let fs = get_fs().change_context(Error::Io)?;
let mut com = Command::new("cargo");
com.current_dir("kernel");
@ -124,11 +135,8 @@ fn build(release: bool, target: Target) -> Result<(), Error> {
com.arg("-r");
}
match target {
Target::Riscv64Virt => {
com.args(["--target", "targets/riscv64-virt-ableos.json"]);
}
_ => {}
if target == Target::Riscv64Virt {
com.args(["--target", "targets/riscv64-virt-ableos.json"]);
}
match com.status() {
@ -165,10 +173,7 @@ fn run(release: bool, target: Target) -> Result<(), Error> {
if target == Target::X86_64 {
#[rustfmt::skip]
com.args([
"-bios",
std::env::var("REPBUILD_QEMU_FIRMWARE_PATH")
.as_deref()
.unwrap_or("/usr/share/ovmf/x64/OVMF_CODE.fd"),
"-bios", "target/OVMF_CODE.fd",
"-drive", "file=target/disk.img,format=raw",
"-m", "4G",
// "-serial", "stdio",
@ -217,33 +222,121 @@ fn run(release: bool, target: Target) -> Result<(), Error> {
}
}
fn fetch_ovmf() -> Result<(), OvmfFetchError> {
const OVMF_RPM_URL: &str = "https://kojipkgs.fedoraproject.org/packages/edk2/20230524/3.fc38/noarch/edk2-ovmf-20230524-3.fc38.noarch.rpm";
let mut file = match std::fs::metadata("target/OVMF_CODE.fd") {
Err(e) if e.kind() == std::io::ErrorKind::NotFound => std::fs::OpenOptions::new()
.create(true)
.write(true)
.read(true)
.open("target/OVMF_CODE.fd")
.into_report()
.change_context(OvmfFetchError::Io)?,
Ok(_) => return Ok(()),
Err(e) => return Err(report!(e).change_context(OvmfFetchError::Io)),
};
log::info!("No OVMF found, downloading…");
let rpm = rpm::RPMPackage::parse(
&mut std::convert::identity::<reqwest::Result<_>>((|| {
reqwest::blocking::get(OVMF_RPM_URL)?.bytes()
})())
.into_report()
.change_context(OvmfFetchError::Fetch)?
.as_ref(),
)
.map_err(RpmError)
.into_report()
.change_context(OvmfFetchError::RpmParse)?;
ensure!(
rpm.metadata
.get_payload_compressor()
.map_err(RpmError)
.into_report()
.change_context(OvmfFetchError::RpmParse)?
== rpm::CompressionType::Zstd,
OvmfFetchError::UnsupportedCompression,
);
file.write_all(
cpio_reader::iter_files(
&zstd::decode_all(std::io::Cursor::new(rpm.content))
.into_report()
.change_context(OvmfFetchError::Zstd)?,
)
.find(|file| file.name() == "./usr/share/edk2/ovmf/OVMF_CODE.fd")
.ok_or_else(|| report!(OvmfFetchError::NoFileFound))?
.file(),
)
.into_report()
.change_context(OvmfFetchError::Io)?;
Ok(())
}
#[derive(Debug, Display, Deref, DerefMut)]
struct RpmError(rpm::RPMError);
impl Context for RpmError {}
// Ehhh?? I am pretty sure they just forgot :ferrisClueless:
unsafe impl Sync for RpmError {}
unsafe impl Send for RpmError {}
#[derive(Debug, Display)]
enum OvmfFetchError {
#[display(fmt = "Failed to fetch OVMF package")]
Fetch,
#[display(fmt = "RPM parse error")]
RpmParse,
#[display(fmt = "Unsupported compression (ZSTD is the only supported one)")]
UnsupportedCompression,
#[display(fmt = "Decompression error")]
Zstd,
#[display(fmt = "Requested file not found in package")]
NoFileFound,
#[display(fmt = "IO Error")]
Io,
}
impl Context for OvmfFetchError {}
#[derive(Clone, Copy, PartialEq, Eq)]
enum Target {
X86_64,
Riscv64Virt,
}
#[derive(Debug)]
#[derive(Debug, Display)]
enum Error {
#[display(fmt = "Failed to build the kernel")]
Build,
#[display(fmt = "Missing or invalid subcommand (available: build, run)")]
InvalidSubCom,
#[display(fmt = "IO Error")]
Io,
#[display(fmt = "Failed to spawn a process")]
ProcessSpawn,
#[display(fmt = "Failed to fetch UEFI firmware")]
OvmfFetch,
#[display(fmt = "QEMU Error: {}", "fmt_qemu_err(*_0)")]
Qemu(Option<i32>),
}
impl Context for Error {}
impl Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::Build => f.write_str("failed to build the kernel"),
Self::InvalidSubCom => {
f.write_str("missing or invalid subcommand (available: build, run)")
fn fmt_qemu_err(e: Option<i32>) -> impl Display {
struct W(Option<i32>);
impl Display for W {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
if let Some(c) = self.0 {
c.fmt(f)
} else {
f.write_str("Interrupted by signal")
}
Self::Io => f.write_str("IO error"),
Self::ProcessSpawn => f.write_str("failed to spawn a process"),
Self::Qemu(Some(c)) => write!(f, "QEMU Error: {c}"),
Self::Qemu(None) => write!(f, "QEMU Error: interrupted by signal"),
}
}
W(e)
}