vinzenz/redox
0
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Map kernel in AP, WIP

Browse source
This commit is contained in:
Jeremy Soller 2016-08-17 15:47:54 -06:00
parent 27d5996abf
commit ebf9766ef5
10 changed files with 89 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

70
arch/x86_64/src/start.rs
View file

@ -8,7 +8,7 @@ use allocator::{HEAP_START, HEAP_SIZE};
use externs::memset;
use gdt;
use idt;
use memory;
use memory::{self, FrameAllocator};
use paging::{self, entry, Page, VirtualAddress};
/// Test of zero values in BSS.
@ -53,35 +53,65 @@ pub unsafe extern fn kstart() -> ! {
idt::init();
// Initialize memory management
let mut allocator = memory::init(0, &__bss_end as *const u8 as usize);
*::ALLOCATOR.lock() = Some(memory::init(0, &__bss_end as *const u8 as usize));
// Initialize paging
let mut active_table = paging::init(&mut allocator);
if let Some(ref mut allocator) = *::ALLOCATOR.lock() {
// TODO: allocate a stack
let stack_start = 0x00080000;
let stack_end = 0x0009F000;
// Initialize heap
let heap_start_page = Page::containing_address(VirtualAddress::new(HEAP_START));
let heap_end_page = Page::containing_address(VirtualAddress::new(HEAP_START + HEAP_SIZE-1));
// Initialize paging
let mut active_table = paging::init(stack_start, stack_end, allocator);
for page in Page::range_inclusive(heap_start_page, heap_end_page) {
active_table.map(page, entry::WRITABLE | entry::NO_EXECUTE, &mut allocator);
// Read ACPI tables
acpi::init(allocator, &mut active_table);
// Map heap
let heap_start_page = Page::containing_address(VirtualAddress::new(HEAP_START));
let heap_end_page = Page::containing_address(VirtualAddress::new(HEAP_START + HEAP_SIZE-1));
for page in Page::range_inclusive(heap_start_page, heap_end_page) {
active_table.map(page, entry::WRITABLE | entry::NO_EXECUTE, allocator);
}
}
}
for i in 0..10 {
if let Some(ref mut allocator) = *::ALLOCATOR.lock() {
println!("BP: {:?}", allocator.allocate_frame());
}
// Read ACPI tables
acpi::init(&mut allocator, &mut active_table);
// Set global allocator
*::ALLOCATOR.lock() = Some(allocator);
// Set global page table
*::PAGE_TABLE.lock() = Some(active_table);
}
asm!("xchg bx, bx" : : : : "intel", "volatile");
kmain();
}
/// Entry to rust for an AP
pub unsafe extern fn kstart_ap() -> ! {
pub unsafe extern fn kstart_ap(stack_start: usize, stack_end: usize) -> ! {
// Set up GDT for AP
gdt::init_ap();
// Set up IDT for aP
idt::init_ap();
if let Some(ref mut allocator) = *::ALLOCATOR.lock() {
// Initialize paging
let mut active_table = paging::init(stack_start, stack_end, allocator);
// Map heap
let heap_start_page = Page::containing_address(VirtualAddress::new(HEAP_START));
let heap_end_page = Page::containing_address(VirtualAddress::new(HEAP_START + HEAP_SIZE-1));
for page in Page::range_inclusive(heap_start_page, heap_end_page) {
active_table.map(page, entry::WRITABLE | entry::NO_EXECUTE, allocator);
}
}
for i in 0..10 {
if let Some(ref mut allocator) = *::ALLOCATOR.lock() {
println!("AP: {:?}", allocator.allocate_frame());
}
}
loop {
asm!("hlt");
}