rulimine/stage23/entry.s3.c
2021-06-29 15:16:25 +02:00

132 lines
3.3 KiB
C

#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 <lib/print.h>
#include <fs/file.h>
#include <lib/elf.h>
#include <mm/pmm.h>
#include <protos/stivale.h>
#include <protos/stivale2.h>
#include <protos/linux.h>
#include <protos/chainload.h>
#include <protos/multiboot1.h>
#include <menu.h>
#include <pxe/pxe.h>
#include <pxe/tftp.h>
#include <drivers/disk.h>
void stage3_common(void);
#if defined (uefi)
__attribute__((naked))
EFI_STATUS efi_main(
__attribute__((unused)) EFI_HANDLE ImageHandle,
__attribute__((unused)) EFI_SYSTEM_TABLE *SystemTable) {
// Invalid return address of 0 to end stacktraces here
asm (
"pushq $0\n\t"
"pushq $0\n\t"
"xorl %eax, %eax\n\t"
"jmp uefi_entry\n\t"
);
}
__attribute__((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;
init_memmap();
term_vbe(0, 0);
early_term = true;
print("Limine " LIMINE_VERSION "\n\n");
disk_create_index();
EFI_HANDLE current_handle = ImageHandle;
for (;;) {
EFI_GUID loaded_img_prot_guid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
EFI_LOADED_IMAGE_PROTOCOL *loaded_image = NULL;
status = uefi_call_wrapper(gBS->HandleProtocol, 3,
current_handle, &loaded_img_prot_guid,
&loaded_image);
if (status) {
panic("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
#if defined (bios)
__attribute__((section(".stage3_build_id")))
uint64_t stage3_build_id = BUILD_ID;
__attribute__((section(".stage3_entry")))
#endif
__attribute__((noreturn))
void stage3_common(void) {
volume_iterate_parts(boot_volume,
if (!init_config_disk(_PART)) {
boot_volume = _PART;
break;
}
);
char *verbose_str = config_get_value(NULL, 0, "VERBOSE");
verbose = verbose_str != NULL && strcmp(verbose_str, "yes") == 0;
if (verbose) {
print("Boot drive: %x\n", boot_volume->index);
print("Boot partition: %d\n", boot_volume->partition);
}
char *cmdline;
char *config = menu(&cmdline);
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")) {
chainload(config);
} else if (!strcmp(proto, "multiboot1")) {
multiboot1_load(config, cmdline);
}
panic("Invalid protocol specified");
}