limine/stage23/entry.s3.c

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#include <lib/term.h>
#include <lib/real.h>
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#include <lib/blib.h>
#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>
#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>
#include <protos/stivale.h>
#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>
#include <pxe/tftp.h>
#include <drivers/disk.h>
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void stage3_common(void);
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#if defined (uefi)
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EFI_STATUS EFIAPI efi_main(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE *SystemTable) {
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gST = SystemTable;
gBS = SystemTable->BootServices;
gRT = SystemTable->RuntimeServices;
efi_image_handle = ImageHandle;
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init_memmap();
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term_vbe(0, 0);
early_term = true;
print("Limine " LIMINE_VERSION "\n\n");
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disk_create_index();
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EFI_GUID loaded_img_prot_guid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
EFI_LOADED_IMAGE_PROTOCOL *loaded_image = NULL;
uefi_call_wrapper(gBS->HandleProtocol, 3, ImageHandle, &loaded_img_prot_guid,
&loaded_image);
boot_volume = disk_volume_from_efi_handle(loaded_image->DeviceHandle);
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if (boot_volume == NULL) {
panic("Can't determine boot disk");
}
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// Invalid return address of 0 to end stacktraces here
asm volatile (
"push 0\n\t"
"jmp stage3_common\n\t"
);
__builtin_unreachable();
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}
#endif
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#if defined (bios)
__attribute__((section(".stage3_build_id")))
uint64_t stage3_build_id = BUILD_ID;
__attribute__((section(".stage3_entry")))
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#endif
__attribute__((noreturn))
void stage3_common(void) {
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volume_iterate_parts(boot_volume,
if (!init_config_disk(_PART)) {
print("Config file found and loaded.\n");
boot_volume = _PART;
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break;
}
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);
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print("Boot drive: %x\n", boot_volume->drive);
print("Boot partition: %d\n", boot_volume->partition);
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char *cmdline;
char *config = menu(&cmdline);
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char *proto = config_get_value(config, 0, "PROTOCOL");
if (proto == NULL) {
panic("PROTOCOL not specified");
}
if (!strcmp(proto, "stivale")) {
stivale_load(config, cmdline);
} else if (!strcmp(proto, "stivale2")) {
#if defined (bios)
void *efi_system_table = NULL;
#elif defined (uefi)
void *efi_system_table = gST;
#endif
stivale2_load(config, cmdline, boot_volume->pxe, efi_system_table);
} else if (!strcmp(proto, "linux")) {
linux_load(config, cmdline);
} else if (!strcmp(proto, "chainload")) {
#if defined (bios)
chainload(config);
#elif defined (uefi)
panic("UEFI Limine does not support the chainload boot protocol");
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#endif
}
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panic("Invalid protocol specified");
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}