108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
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#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 <mm/mtrr.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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extern uint64_t stage3_build_id;
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uint8_t boot_drive;
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int boot_partition = -1;
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bool booted_from_pxe = false;
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bool booted_from_cd = false;
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bool stage3_loaded = 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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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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__attribute__((noreturn))
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void entry(uint8_t _boot_drive, int boot_from) {
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boot_drive = _boot_drive;
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booted_from_pxe = (boot_from == BOOT_FROM_PXE);
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booted_from_cd = (boot_from == BOOT_FROM_CD);
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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_e820();
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init_memmap();
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volume_create_index();
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switch (boot_from) {
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case BOOT_FROM_HDD:
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case BOOT_FROM_CD: {
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struct volume boot_volume;
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volume_get_by_coord(&boot_volume, boot_drive, -1);
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struct volume part = boot_volume;
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for (int i = 0; ; i++) {
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if (stage3_init(&part)) {
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print("Stage 3 found and loaded.\n");
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break;
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}
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int ret = part_get(&part, &boot_volume, i);
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switch (ret) {
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case INVALID_TABLE:
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case END_OF_TABLE:
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panic("Stage 3 not found.");
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}
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}
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break;
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}
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}
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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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