mirror of
https://github.com/limine-bootloader/limine
synced 2024-12-10 00:34:21 +03:00
129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <stdnoreturn.h>
|
|
#include <lib/term.h>
|
|
#include <lib/real.h>
|
|
#include <lib/blib.h>
|
|
#include <lib/libc.h>
|
|
#include <lib/part.h>
|
|
#include <lib/config.h>
|
|
#include <lib/trace.h>
|
|
#include <sys/e820.h>
|
|
#include <sys/a20.h>
|
|
#include <sys/idt.h>
|
|
#include <sys/gdt.h>
|
|
#include <lib/print.h>
|
|
#include <fs/file.h>
|
|
#include <lib/elf.h>
|
|
#include <mm/pmm.h>
|
|
#include <menu.h>
|
|
#include <pxe/pxe.h>
|
|
#include <pxe/tftp.h>
|
|
#include <drivers/disk.h>
|
|
#include <sys/lapic.h>
|
|
#include <lib/readline.h>
|
|
|
|
void stage3_common(void);
|
|
|
|
#if uefi == 1
|
|
extern symbol __image_base;
|
|
|
|
noreturn void uefi_entry(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) {
|
|
gST = SystemTable;
|
|
gBS = SystemTable->BootServices;
|
|
gRT = SystemTable->RuntimeServices;
|
|
efi_image_handle = ImageHandle;
|
|
|
|
EFI_STATUS status;
|
|
|
|
status = gBS->SetWatchdogTimer(0, 0x10000, 0, NULL);
|
|
if (status) {
|
|
term_vbe(NULL, 0, 0);
|
|
early_term = true;
|
|
print("WARNING: Failed to disable watchdog timer!\n");
|
|
}
|
|
|
|
term_notready();
|
|
|
|
init_memmap();
|
|
|
|
#if defined (__x86_64__) || defined (__i386__)
|
|
init_gdt();
|
|
#endif
|
|
|
|
#if defined (__x86_64__)
|
|
if ((uintptr_t)__image_base > 0x100000000) {
|
|
panic(false, "Limine does not support being loaded above 4GiB");
|
|
}
|
|
#endif
|
|
|
|
disk_create_index();
|
|
|
|
boot_volume = NULL;
|
|
|
|
EFI_HANDLE current_handle = ImageHandle;
|
|
for (;;) {
|
|
if (current_handle == NULL) {
|
|
term_vbe(NULL, 0, 0);
|
|
early_term = true;
|
|
|
|
print("WARNING: Could not meaningfully match the boot device handle with a volume.\n");
|
|
print(" Using the first volume containing a Limine configuration!\n");
|
|
|
|
for (size_t i = 0; i < volume_index_i; i++) {
|
|
struct file_handle *f;
|
|
|
|
if ((f = fopen(volume_index[i], "/limine.cfg")) == NULL
|
|
&& (f = fopen(volume_index[i], "/boot/limine.cfg")) == NULL
|
|
&& (f = fopen(volume_index[i], "/EFI/BOOT/limine.cfg")) == NULL) {
|
|
continue;
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
if (volume_index[i]->backing_dev != NULL) {
|
|
boot_volume = volume_index[i]->backing_dev;
|
|
} else {
|
|
boot_volume = volume_index[i];
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (boot_volume != NULL)
|
|
stage3_common();
|
|
|
|
panic(false, "No volume contained a Limine configuration file");
|
|
}
|
|
|
|
EFI_GUID loaded_img_prot_guid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
|
|
EFI_LOADED_IMAGE_PROTOCOL *loaded_image = NULL;
|
|
|
|
status = gBS->HandleProtocol(current_handle, &loaded_img_prot_guid,
|
|
(void **)&loaded_image);
|
|
|
|
if (status) {
|
|
panic(false, "HandleProtocol failure (%x)", status);
|
|
}
|
|
|
|
boot_volume = disk_volume_from_efi_handle(loaded_image->DeviceHandle);
|
|
|
|
if (boot_volume != NULL)
|
|
stage3_common();
|
|
|
|
current_handle = loaded_image->ParentHandle;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
noreturn void stage3_common(void) {
|
|
term_notready();
|
|
|
|
#if defined (__x86_64__) || defined (__i386__)
|
|
init_flush_irqs();
|
|
init_io_apics();
|
|
#endif
|
|
|
|
menu(true);
|
|
}
|