mirror of
https://github.com/limine-bootloader/limine
synced 2024-12-13 10:07:11 +03:00
116 lines
2.4 KiB
C
116 lines
2.4 KiB
C
#include <lib/term.h>
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#include <lib/real.h>
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#include <lib/blib.h>
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#include <lib/libc.h>
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#include <lib/part.h>
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#include <lib/config.h>
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#include <lib/trace.h>
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#include <sys/e820.h>
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#include <sys/a20.h>
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#include <lib/print.h>
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#include <fs/file.h>
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#include <lib/elf.h>
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#include <mm/pmm.h>
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#include <protos/stivale.h>
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#include <protos/stivale2.h>
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#include <protos/linux.h>
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#include <protos/chainload.h>
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#include <menu.h>
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#include <pxe/pxe.h>
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#include <pxe/tftp.h>
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#include <drivers/disk.h>
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#include <sys/idt.h>
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extern uint64_t stage3_build_id;
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struct volume *boot_volume;
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#if defined (bios)
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bool stage3_loaded = false;
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static bool stage3_found = false;
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extern symbol stage3_addr;
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extern symbol limine_sys_size;
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static bool stage3_init(struct volume *part) {
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struct file_handle stage3;
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if (fopen(&stage3, part, "/limine.sys")
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&& fopen(&stage3, part, "/boot/limine.sys")) {
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return false;
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}
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stage3_found = true;
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if (stage3.size != (size_t)limine_sys_size) {
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print("limine.sys size incorrect.\n");
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return false;
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}
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fread(&stage3, stage3_addr,
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(uintptr_t)stage3_addr - 0x8000,
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stage3.size - ((uintptr_t)stage3_addr - 0x8000));
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if (BUILD_ID != stage3_build_id) {
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print("limine.sys build ID mismatch.\n");
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return false;
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}
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stage3_loaded = true;
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return true;
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}
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enum {
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BOOTED_FROM_HDD,
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BOOTED_FROM_PXE,
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BOOTED_FROM_CD
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};
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__attribute__((noreturn))
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void entry(uint8_t boot_drive, int boot_from) {
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init_e820();
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init_memmap();
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term_textmode();
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print("Limine " LIMINE_VERSION "\n\n");
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if (!a20_enable())
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panic("Could not enable A20 line");
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init_idt();
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disk_create_index();
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if (boot_from == BOOTED_FROM_HDD || boot_from == BOOTED_FROM_CD) {
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boot_volume = volume_get_by_bios_drive(boot_drive);
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} else if (boot_from == BOOTED_FROM_PXE) {
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pxe_init();
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boot_volume = pxe_bind_volume();
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}
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volume_iterate_parts(boot_volume,
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if (stage3_init(_PART)) {
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break;
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}
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);
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if (!stage3_found)
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print("\n"
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"!! Stage 3 file not found!\n"
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"!! Have you copied limine.sys to the root or /boot directories of\n"
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"!! one of the partitions on the boot device?\n\n");
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if (!stage3_loaded)
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panic("Failed to load stage 3.");
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__attribute__((noreturn))
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void (*stage3)(int boot_from) = (void *)stage3_addr;
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stage3(boot_from);
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}
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#endif
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