mirror of
https://github.com/asterinas/asterinas.git
synced 2025-06-24 18:03:25 +00:00
Add EFI stub
This commit is contained in:
Zhang Junyang
committed by
Tate, Hongliang Tian
Tate, Hongliang Tian
parent
acf4a057d9
commit
32e62080ce
@ -10,6 +10,7 @@ align_ext = { path = "../libs/align_ext" }
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bit_field = "0.10.1"
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bitflags = "1.3"
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bitvec = { version = "1.0", default-features = false, features = ["alloc"] }
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linux_boot_params = { path = "../libs/boot-trojan/linux-boot-params" }
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buddy_system_allocator = "0.9.0"
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cfg-if = "1.0"
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gimli = { version = "0.28", default-features = false, features = ["read-core"] }
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@ -1,291 +0,0 @@
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//! The Linux Boot Protocol boot_params module.
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//!
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//! The bootloader will deliver the address of the `BootParams` struct
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//! as the argument of the kernel entrypoint. So we must define a Linux
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//! ABI compatible struct in Rust, despite that most of the fields are
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//! currently not needed by Asterinas.
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//!
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct ScreenInfo {
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pub(super) orig_x: u8, /* 0x00 */
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pub(super) orig_y: u8, /* 0x01 */
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pub(super) ext_mem_k: u16, /* 0x02 */
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pub(super) orig_video_page: u16, /* 0x04 */
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pub(super) orig_video_mode: u8, /* 0x06 */
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pub(super) orig_video_cols: u8, /* 0x07 */
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pub(super) flags: u8, /* 0x08 */
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pub(super) unused2: u8, /* 0x09 */
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pub(super) orig_video_ega_bx: u16, /* 0x0a */
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pub(super) unused3: u16, /* 0x0c */
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pub(super) orig_video_lines: u8, /* 0x0e */
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pub(super) orig_video_is_vga: u8, /* 0x0f */
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pub(super) orig_video_points: u16, /* 0x10 */
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/* VESA graphic mode -- linear frame buffer */
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pub(super) lfb_width: u16, /* 0x12 */
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pub(super) lfb_height: u16, /* 0x14 */
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pub(super) lfb_depth: u16, /* 0x16 */
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pub(super) lfb_base: u32, /* 0x18 */
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pub(super) lfb_size: u32, /* 0x1c */
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pub(super) cl_magic: u16,
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pub(super) cl_offset: u16, /* 0x20 */
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pub(super) lfb_linelength: u16, /* 0x24 */
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pub(super) red_size: u8, /* 0x26 */
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pub(super) red_pos: u8, /* 0x27 */
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pub(super) green_size: u8, /* 0x28 */
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pub(super) green_pos: u8, /* 0x29 */
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pub(super) blue_size: u8, /* 0x2a */
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pub(super) blue_pos: u8, /* 0x2b */
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pub(super) rsvd_size: u8, /* 0x2c */
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pub(super) rsvd_pos: u8, /* 0x2d */
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pub(super) vesapm_seg: u16, /* 0x2e */
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pub(super) vesapm_off: u16, /* 0x30 */
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pub(super) pages: u16, /* 0x32 */
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pub(super) vesa_attributes: u16, /* 0x34 */
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pub(super) capabilities: u32, /* 0x36 */
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pub(super) ext_lfb_base: u32, /* 0x3a */
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pub(super) _reserved: [u8; 2], /* 0x3e */
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}
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct ApmBiosInfo {
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pub(super) version: u16,
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pub(super) cseg: u16,
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pub(super) offset: u32,
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pub(super) cseg_16: u16,
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pub(super) dseg: u16,
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pub(super) flags: u16,
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pub(super) cseg_len: u16,
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pub(super) cseg_16_len: u16,
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pub(super) dseg_len: u16,
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}
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct IstInfo {
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pub(super) signature: u32,
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pub(super) command: u32,
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pub(super) event: u32,
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pub(super) perf_level: u32,
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}
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct SysDescTable {
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pub(super) length: u16,
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pub(super) table: [u8; 14],
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}
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct OlpcOfwHeader {
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pub(super) ofw_magic: u32, /* OFW signature */
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pub(super) ofw_version: u32,
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pub(super) cif_handler: u32, /* callback into OFW */
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pub(super) irq_desc_table: u32,
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}
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#[derive(Copy, Clone, Debug)]
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#[repr(C)]
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pub(super) struct EdidInfo {
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pub(super) dummy: [u8; 128],
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}
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#[derive(Copy, Clone, Debug)]
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#[repr(C)]
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pub(super) struct EfiInfo {
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pub(super) efi_loader_signature: u32,
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pub(super) efi_systab: u32,
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pub(super) efi_memdesc_size: u32,
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pub(super) efi_memdesc_version: u32,
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pub(super) efi_memmap: u32,
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pub(super) efi_memmap_size: u32,
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pub(super) efi_systab_hi: u32,
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pub(super) efi_memmap_hi: u32,
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}
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/// Magic stored in SetupHeader.header.
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pub(super) const LINUX_BOOT_HEADER_MAGIC: u32 = 0x53726448;
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/// Linux Boot Protocol Header.
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///
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/// Originally defined in the linux source tree:
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/// `linux/arch/x86/include/uapi/asm/bootparam.h`
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct SetupHeader {
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pub(super) setup_sects: u8,
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pub(super) root_flags: u16,
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pub(super) syssize: u32,
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pub(super) ram_size: u16,
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pub(super) vid_mode: u16,
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pub(super) root_dev: u16,
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pub(super) boot_flag: u16,
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pub(super) jump: u16,
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pub(super) header: u32,
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pub(super) version: u16,
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pub(super) realmode_swtch: u32,
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pub(super) start_sys_seg: u16,
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pub(super) kernel_version: u16,
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pub(super) type_of_loader: u8,
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pub(super) loadflags: u8,
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pub(super) setup_move_size: u16,
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pub(super) code32_start: u32,
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pub(super) ramdisk_image: u32,
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pub(super) ramdisk_size: u32,
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pub(super) bootsect_kludge: u32,
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pub(super) heap_end_ptr: u16,
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pub(super) ext_loader_ver: u8,
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pub(super) ext_loader_type: u8,
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pub(super) cmd_line_ptr: u32,
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pub(super) initrd_addr_max: u32,
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pub(super) kernel_alignment: u32,
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pub(super) relocatable_kernel: u8,
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pub(super) min_alignment: u8,
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pub(super) xloadflags: u16,
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pub(super) cmdline_size: u32,
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pub(super) hardware_subarch: u32,
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pub(super) hardware_subarch_data: u64,
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pub(super) payload_offset: u32,
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pub(super) payload_length: u32,
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pub(super) setup_data: u64,
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pub(super) pref_address: u64,
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pub(super) init_size: u32,
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pub(super) handover_offset: u32,
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pub(super) kernel_info_offset: u32,
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}
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/// The E820 types known to the kernel.
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///
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/// Originally defined in the linux source tree:
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/// `linux/arch/x86/include/asm/e820/types.h`
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#[derive(Copy, Clone, Debug)]
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#[repr(u32)]
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pub(super) enum E820Type {
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Ram = 1,
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Reserved = 2,
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Acpi = 3,
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Nvs = 4,
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Unusable = 5,
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Pmem = 7,
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/*
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* This is a non-standardized way to represent ADR or
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* NVDIMM regions that persist over a reboot.
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*
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* The kernel will ignore their special capabilities
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* unless the CONFIG_X86_PMEM_LEGACY=y option is set.
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*
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* ( Note that older platforms also used 6 for the same
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* type of memory, but newer versions switched to 12 as
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* 6 was assigned differently. Some time they will learn... )
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*/
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Pram = 12,
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/*
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* Special-purpose memory is indicated to the system via the
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* EFI_MEMORY_SP attribute. Define an e820 translation of this
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* memory type for the purpose of reserving this range and
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* marking it with the IORES_DESC_SOFT_RESERVED designation.
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*/
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SoftReserved = 0xefffffff,
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/*
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* Reserved RAM used by the kernel itself if
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* CONFIG_INTEL_TXT=y is enabled, memory of this type
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* will be included in the S3 integrity calculation
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* and so should not include any memory that the BIOS
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* might alter over the S3 transition:
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*/
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ReservedKern = 128,
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}
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct BootE820Entry {
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pub(super) addr: u64,
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pub(super) size: u64,
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pub(super) typ: E820Type,
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}
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const E820_MAX_ENTRIES_ZEROPAGE: usize = 128;
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct EddDeviceParams {
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// TODO: We currently have no plans to support the edd device,
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// and we need unnamed fields (Rust RFC 2102) to implement this
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// FFI neatly. So we put a dummy implementation here conforming
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// to the BootParams struct ABI.
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pub(super) _dummy: [u8; (0xeec - 0xd00) / 6 - 8],
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}
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct EddInfo {
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pub(super) device: u8,
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pub(super) version: u8,
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pub(super) interface_support: u16,
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pub(super) legacy_max_cylinder: u16,
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pub(super) legacy_max_head: u8,
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pub(super) legacy_sectors_per_track: u8,
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pub(super) params: EddDeviceParams,
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}
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const EDD_MBR_SIG_MAX: usize = 16;
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const EDDMAXNR: usize = 6;
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/// Linux 32/64-bit Boot Protocol parameter struct.
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///
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/// Originally defined in the linux source tree:
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/// `linux/arch/x86/include/uapi/asm/bootparam.h`
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#[derive(Copy, Clone, Debug)]
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#[repr(C, packed)]
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pub(super) struct BootParams {
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pub(super) screen_info: ScreenInfo, /* 0x000 */
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pub(super) apm_bios_info: ApmBiosInfo, /* 0x040 */
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pub(super) _pad2: [u8; 4], /* 0x054 */
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pub(super) tboot_addr: u64, /* 0x058 */
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pub(super) ist_info: IstInfo, /* 0x060 */
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pub(super) acpi_rsdp_addr: u64, /* 0x070 */
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pub(super) _pad3: [u8; 8], /* 0x078 */
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pub(super) hd0_info: [u8; 16], /* obsolete! 0x080 */
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pub(super) hd1_info: [u8; 16], /* obsolete! 0x090 */
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pub(super) sys_desc_table: SysDescTable, /* obsolete! 0x0a0 */
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pub(super) olpc_ofw_header: OlpcOfwHeader, /* 0x0b0 */
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pub(super) ext_ramdisk_image: u32, /* 0x0c0 */
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pub(super) ext_ramdisk_size: u32, /* 0x0c4 */
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pub(super) ext_cmd_line_ptr: u32, /* 0x0c8 */
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pub(super) _pad4: [u8; 112], /* 0x0cc */
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pub(super) cc_blob_address: u32, /* 0x13c */
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pub(super) edid_info: EdidInfo, /* 0x140 */
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pub(super) efi_info: EfiInfo, /* 0x1c0 */
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pub(super) alt_mem_k: u32, /* 0x1e0 */
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pub(super) scratch: u32, /* Scratch field! 0x1e4 */
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pub(super) e820_entries: u8, /* 0x1e8 */
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pub(super) eddbuf_entries: u8, /* 0x1e9 */
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pub(super) edd_mbr_sig_buf_entries: u8, /* 0x1ea */
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pub(super) kbd_status: u8, /* 0x1eb */
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pub(super) secure_boot: u8, /* 0x1ec */
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pub(super) _pad5: [u8; 2], /* 0x1ed */
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/*
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* The sentinel is set to a nonzero value (0xff) in header.S.
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*
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* A bootloader is supposed to only take setup_header and put
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* it into a clean boot_params buffer. If it turns out that
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* it is clumsy or too generous with the buffer, it most
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* probably will pick up the sentinel variable too. The fact
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* that this variable then is still 0xff will let kernel
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* know that some variables in boot_params are invalid and
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* kernel should zero out certain portions of boot_params.
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*/
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pub(super) sentinel: u8, /* 0x1ef */
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pub(super) _pad6: [u8; 1], /* 0x1f0 */
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pub(super) hdr: SetupHeader, /* setup header 0x1f1 */
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pub(super) _pad7: [u8; 0x290 - 0x1f1 - core::mem::size_of::<SetupHeader>()],
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pub(super) edd_mbr_sig_buffer: [u32; EDD_MBR_SIG_MAX], /* 0x290 */
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pub(super) e820_table: [BootE820Entry; E820_MAX_ENTRIES_ZEROPAGE], /* 0x2d0 */
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pub(super) _pad8: [u8; 48], /* 0xcd0 */
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pub(super) eddbuf: [EddInfo; EDDMAXNR], /* 0xd00 */
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pub(super) _pad9: [u8; 276], /* 0xeec */
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}
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@ -1,8 +1,8 @@
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//! The Linux 64-bit Boot Protocol supporting module.
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//!
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mod boot_params;
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use boot_params::E820Type;
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extern crate linux_boot_params;
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use linux_boot_params::{BootParams, E820Type, LINUX_BOOT_HEADER_MAGIC};
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use crate::boot::{
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kcmdline::KCmdlineArg,
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@ -16,7 +16,7 @@ use core::ffi::CStr;
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use spin::Once;
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static BOOT_PARAMS: Once<boot_params::BootParams> = Once::new();
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static BOOT_PARAMS: Once<BootParams> = Once::new();
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fn init_bootloader_name(bootloader_name: &'static Once<String>) {
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let hdr = &BOOT_PARAMS.get().unwrap().hdr;
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@ -140,9 +140,9 @@ fn init_memory_regions(memory_regions: &'static Once<Vec<MemoryRegion>>) {
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/// The entry point of Rust code called by the Linux 64-bit boot compatible bootloader.
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#[no_mangle]
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unsafe extern "sysv64" fn __linux64_boot(params_ptr: *const boot_params::BootParams) -> ! {
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unsafe extern "sysv64" fn __linux64_boot(params_ptr: *const BootParams) -> ! {
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let params = *params_ptr;
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assert_eq!({ params.hdr.header }, boot_params::LINUX_BOOT_HEADER_MAGIC);
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assert_eq!({ params.hdr.header }, LINUX_BOOT_HEADER_MAGIC);
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BOOT_PARAMS.call_once(|| params);
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crate::boot::register_boot_init_callbacks(
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init_bootloader_name,
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Reference in New Issue
Block a user