forked from AbleOS/ableos
progress on porting to limine
This commit is contained in:
parent
fe69e31b91
commit
23c355762c
14
Cargo.lock
generated
14
Cargo.lock
generated
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@ -30,7 +30,6 @@ dependencies = [
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"acpi",
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"axel",
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"bitflags",
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"bootloader",
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"clparse",
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"cpuio",
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"ext2",
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@ -41,6 +40,7 @@ dependencies = [
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"kernel",
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"lazy_static",
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"libwasm",
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"limine",
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"linked_list_allocator",
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"lliw",
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"log",
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@ -150,12 +150,6 @@ version = "1.3.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
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[[package]]
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name = "bootloader"
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version = "0.9.22"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "de78decc37247c7cfac5dbf3495c7298c6ac97cb355161caa7e15969c6648e6c"
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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@ -348,6 +342,12 @@ name = "libwasm"
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version = "0.1.0"
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source = "git+https://git.ablecorp.us/able/libwasm.git#4ffcd290f8bc918ca4adf5e23ce2097968e4a8b2"
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[[package]]
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name = "limine"
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version = "0.1.8"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "eac64618e505bab2387986e5b1014f5d344130d609685bbd8b71a10af3ee599d"
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[[package]]
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name = "linked_list_allocator"
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version = "0.9.1"
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@ -108,7 +108,7 @@ git = "https://git.ablecorp.us:443/able/externc-libm.git"
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riscv = "*"
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[target.'cfg(target_arch = "x86_64")'.dependencies]
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bootloader = { version = "0.9.8", features = ["map_physical_memory"] }
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limine = "0.1"
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cpuio = { git = "https://git.ablecorp.us/ondra05/cpuio.git" }
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pic8259 = "0.10.1"
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uart_16550 = "0.2.0"
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@ -11,5 +11,12 @@
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"linker": "rust-lld",
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"panic-strategy": "abort",
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"disable-redzone": true,
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"features": "-mmx,-sse,+soft-float"
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"features": "-mmx,-sse,+soft-float",
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"code-model": "kernel",
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"pre-link-args": {
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"ld.lld": [
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"--gc-sections",
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"--script=ableos/src/arch/x86_64/kernel.ld"
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]
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}
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}
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@ -17,15 +17,21 @@ pub fn init() {
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Err(err) => serial_println!("{}", err),
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}
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let mut term = TERM.lock();
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trace!("gdt");
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gdt::init();
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trace!("idt");
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interrupts::init_idt();
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unsafe { interrupts::PICS.lock().initialize() };
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trace!("term");
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let term = &*TERM;
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trace!("term.lock()");
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let mut term = term.lock();
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// term.initialize();
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term.set_dirty(true);
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term.draw_term();
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drop(term);
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gdt::init();
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interrupts::init_idt();
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unsafe { interrupts::PICS.lock().initialize() };
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x86_64::instructions::interrupts::enable();
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}
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48
ableos/src/arch/x86_64/kernel.ld
Normal file
48
ableos/src/arch/x86_64/kernel.ld
Normal file
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@ -0,0 +1,48 @@
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/* Tell the linker that we want an x86_64 ELF64 output file */
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OUTPUT_FORMAT(elf64-x86-64)
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OUTPUT_ARCH(i386:x86-64)
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/* We want the symbol `x86_64_start` to be our entry point */
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ENTRY(x86_64_start)
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/* Define the program headers we want so the bootloader gives us the right */
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/* MMU permissions */
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PHDRS
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{
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null PT_NULL FLAGS(0) ; /* Null segment */
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text PT_LOAD FLAGS((1 << 0) | (1 << 2)) ; /* Execute + Read */
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rodata PT_LOAD FLAGS((1 << 2)) ; /* Read only */
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data PT_LOAD FLAGS((1 << 1) | (1 << 2)) ; /* Write + Read */
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}
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SECTIONS
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{
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/* We wanna be placed in the topmost 2GiB of the address space, for optimisations */
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/* and because that is what the Limine spec mandates. */
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/* Any address in this region will do, but often 0xffffffff80000000 is chosen as */
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/* that is the beginning of the region. */
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. = 0xffffffff80000000;
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.text : {
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*(.text .text.*)
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} :text
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/* Move to the next memory page for .rodata */
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. += CONSTANT(MAXPAGESIZE);
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.rodata : {
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*(.rodata .rodata.*)
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} :rodata
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/* Move to the next memory page for .data */
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. += CONSTANT(MAXPAGESIZE);
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.data : {
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*(.data .data.*)
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} :data
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.bss : {
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*(COMMON)
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*(.bss .bss.*)
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} :data
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}
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@ -1,7 +1,7 @@
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use bootloader::bootinfo::{MemoryMap, MemoryRegionType};
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use limine::{LimineMemmapResponse, LimineMemoryMapEntryType};
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use x86_64::{
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structures::paging::{
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FrameAllocator, FrameDeallocator, Mapper, OffsetPageTable, Page, PageTable, PhysFrame,
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FrameAllocator, FrameDeallocator, OffsetPageTable, PageTable, PhysFrame,
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Size4KiB,
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},
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PhysAddr, VirtAddr,
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@ -25,69 +25,13 @@ unsafe fn active_level_4_table(physical_memory_offset: VirtAddr) -> &'static mut
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&mut *page_table_ptr
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}
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fn translate_addr_inner(addr: VirtAddr, physical_memory_offset: VirtAddr) -> Option<PhysAddr> {
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use x86_64::registers::control::Cr3;
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use x86_64::structures::paging::page_table::FrameError;
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let (level_4_table_frame, _) = Cr3::read();
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let table_indexes = [
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addr.p4_index(),
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addr.p3_index(),
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addr.p2_index(),
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addr.p1_index(),
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];
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let mut frame = level_4_table_frame;
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for &index in &table_indexes {
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// convert the frame into a page table reference
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let virt = physical_memory_offset + frame.start_address().as_u64();
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let table_ptr: *const PageTable = virt.as_ptr();
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let table = unsafe { &*table_ptr };
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let entry = &table[index];
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frame = match entry.frame() {
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Ok(frame) => frame,
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Err(FrameError::FrameNotPresent) => return None,
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Err(FrameError::HugeFrame) => panic!["huge pages not supported"],
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};
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}
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Some(frame.start_address() + u64::from(addr.page_offset()))
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}
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pub unsafe fn translate_addr(addr: VirtAddr, physical_memory_offset: VirtAddr) -> Option<PhysAddr> {
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translate_addr_inner(addr, physical_memory_offset)
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}
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pub fn create_example_mapping(
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page: Page,
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mapper: &mut OffsetPageTable,
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frame_allocator: &mut impl FrameAllocator<Size4KiB>,
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) {
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use x86_64::structures::paging::PageTableFlags as Flags;
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let frame = PhysFrame::containing_address(PhysAddr::new(0xb8000));
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let flags = Flags::PRESENT | Flags::WRITABLE;
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let map_to_result = unsafe { mapper.map_to(page, frame, flags, frame_allocator) };
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map_to_result.expect("map_to failed").flush();
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}
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pub struct EmptyFrameAllocator;
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unsafe impl FrameAllocator<Size4KiB> for EmptyFrameAllocator {
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fn allocate_frame(&mut self) -> Option<PhysFrame<Size4KiB>> {
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None
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}
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}
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pub struct BootInfoFrameAllocator {
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memory_map: &'static MemoryMap,
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memory_map: &'static LimineMemmapResponse,
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next: usize,
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}
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impl BootInfoFrameAllocator {
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pub unsafe fn init(memory_map: &'static MemoryMap) -> Self {
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pub unsafe fn init(memory_map: &'static LimineMemmapResponse) -> Self {
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Self {
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memory_map,
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next: 0,
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@ -95,11 +39,11 @@ impl BootInfoFrameAllocator {
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}
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fn usable_frames(&self) -> impl Iterator<Item = PhysFrame> {
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let regions = self.memory_map.iter();
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let usable_regions = regions.filter(|r| r.region_type == MemoryRegionType::Usable);
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let addr_range = usable_regions.map(|r| r.range.start_addr()..r.range.end_addr());
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let frame_address = addr_range.flat_map(|r| r.step_by(4096));
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frame_address.map(|addr| PhysFrame::containing_address(PhysAddr::new(addr)))
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self.memory_map.mmap().unwrap().iter()
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.filter(|r| r.typ == LimineMemoryMapEntryType::Usable)
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.map(|r| r.base..r.base + r.len)
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.flat_map(|r| r.step_by(4096))
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.map(|addr| PhysFrame::containing_address(PhysAddr::new(addr)))
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}
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}
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@ -10,27 +10,24 @@ pub mod init;
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pub mod interrupts;
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pub mod memory;
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use crate::arch::drivers::allocator;
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use bootloader::{entry_point, BootInfo};
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use limine::*;
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use x86_64::{instructions::hlt, VirtAddr};
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#[cfg(not(test))]
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entry_point![start];
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use crate::serial_println;
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use self::drivers::allocator;
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static HHDM: LimineHhdmRequest = LimineHhdmRequest::new(0);
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static MMAP: LimineMmapRequest = LimineMmapRequest::new(0);
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#[cfg(not(test))]
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#[no_mangle]
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pub fn start(boot_info: &'static BootInfo) -> ! {
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let phys_mem_offset = VirtAddr::new(boot_info.physical_memory_offset);
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pub fn x86_64_start() -> ! {
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let hhdm = HHDM.get_response().get().unwrap();
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let mmap = MMAP.get_response().get().unwrap();
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let phys_mem_offset = VirtAddr::new(hhdm.offset);
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let mut mapper = unsafe { memory::init(phys_mem_offset) };
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let mut frame_allocator =
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unsafe { memory::BootInfoFrameAllocator::init(&boot_info.memory_map) };
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// let page = Page::containing_address(VirtAddr::new(0xdeadbeaf000));
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// memory::create_example_mapping(page, &mut mapper, &mut frame_allocator);
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//
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// let page_ptr: *mut u64 = page.start_address().as_mut_ptr();
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// unsafe { page_ptr.offset(400).write_volatile(0xf021_f077_f065_804e) };
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let mut frame_allocator = unsafe { memory::BootInfoFrameAllocator::init(mmap) };
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allocator::init_heap(&mut mapper, &mut frame_allocator).expect("heap initialization failed");
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@ -43,7 +43,17 @@ impl acpi::AcpiHandler for AcpiStruct {
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}
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}
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pub static TERM: Lazy<spin::Mutex<VTerm>> = Lazy::new(|| spin::Mutex::new(VTerm::new()));
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pub static TERM: Lazy<spin::Mutex<VTerm>> = Lazy::new(|| {
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trace!("mutex");
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let mutex = spin::Mutex::new({
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trace!("vterm");
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let vterm = VTerm::new();
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trace!("vterm-done");
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vterm
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});
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trace!("mutex-done");
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mutex
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});
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#[derive(Debug)]
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pub struct Path {
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@ -1,6 +1,7 @@
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//! Memory allocator
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use linked_list_allocator::LockedHeap;
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use log::trace;
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///
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pub const HEAP_START: usize = 0x_4444_4444_0000;
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#[alloc_error_handler]
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fn alloc_error_handler(layout: alloc::alloc::Layout) -> ! {
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panic!("allocation error: {:?}", layout)
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trace!("allocation error: {:?}", layout);
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loop {}
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// panic!("allocation error: {:?}", layout)
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}
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