mirror of
https://github.com/DragonOS-Community/DragonOS.git
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9284987850
* riscv: 完成UEFI初始化,能正确设置memblock的信息 * sbi增加reset功能 * 把虚拟CPU修改为sifive-u54，使qemu能更正确地模拟硬件行为 * 修复内存页面映射未设置“DIRTY”、”ACCESSED“、”GLOBAL“位，导致真机page fault的问题
88 lines
2.3 KiB
Rust
88 lines
2.3 KiB
Rust
use core::intrinsics::unreachable;
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use fdt::node::FdtNode;
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use crate::{
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arch::mm::init::mm_early_init,
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driver::{firmware::efi::init::efi_init, open_firmware::fdt::open_firmware_fdt_driver},
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init::{boot_params, init_before_mem_init},
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kdebug, kinfo,
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mm::{PhysAddr, VirtAddr},
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print, println,
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};
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#[derive(Debug)]
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pub struct ArchBootParams {
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/// 启动时的fdt物理地址
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pub fdt_paddr: PhysAddr,
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pub fdt_vaddr: Option<VirtAddr>,
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}
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impl ArchBootParams {
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pub const DEFAULT: Self = ArchBootParams {
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fdt_paddr: PhysAddr::new(0),
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fdt_vaddr: None,
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};
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pub fn arch_fdt(&self) -> VirtAddr {
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// 如果fdt_vaddr为None，则说明还没有进行内核虚拟地址空间的映射，此时返回物理地址
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if self.fdt_vaddr.is_none() {
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return VirtAddr::new(self.fdt_paddr.data());
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}
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self.fdt_vaddr.unwrap()
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}
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}
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#[no_mangle]
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unsafe extern "C" fn kernel_main(hartid: usize, fdt_paddr: usize) -> ! {
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let fdt_paddr = PhysAddr::new(fdt_paddr);
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// system_reset(sbi::reset::ResetType::Shutdown, sbi::reset::ResetReason::NoReason);
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init_before_mem_init();
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boot_params().write().arch.fdt_paddr = fdt_paddr;
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kinfo!(
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"DragonOS kernel is running on hart {}, fdt address:{:?}",
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hartid,
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fdt_paddr
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);
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mm_early_init();
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let fdt = fdt::Fdt::from_ptr(fdt_paddr.data() as *const u8).expect("Failed to parse fdt!");
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// print_node(fdt.find_node("/").unwrap(), 0);
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parse_dtb();
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efi_init();
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loop {}
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unreachable()
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}
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#[inline(never)]
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fn print_node(node: FdtNode<'_, '_>, n_spaces: usize) {
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(0..n_spaces).for_each(|_| print!(" "));
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println!("{}/", node.name);
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node.properties().for_each(|p| {
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(0..n_spaces + 4).for_each(|_| print!(" "));
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println!("{}: {:?}", p.name, p.value);
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});
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for child in node.children() {
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print_node(child, n_spaces + 4);
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}
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}
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/// 解析fdt，获取内核启动参数
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#[inline(never)]
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unsafe fn parse_dtb() {
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let fdt_paddr = boot_params().read().arch.fdt_paddr;
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if fdt_paddr.is_null() {
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panic!("Failed to get fdt address!");
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}
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open_firmware_fdt_driver()
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.early_scan_device_tree()
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.expect("Failed to scan device tree at boottime.");
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}
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