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Hard-code a fallback boot loader path

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If the config is invalid, try to load the default boot loader backup.
This commit is contained in:
Lauri Kenttä
2017-08-28 23:45:02 +03:00
parent 054f8cc751
commit f255b13027
1 changed files with 23 additions and 9 deletions
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32
src/main.c
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@@ -355,17 +355,30 @@ EFI_STATUS EFIAPI EfiMain(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *ST_) {
SetResolution(config.resolution_x, config.resolution_y);
HackBgrt(root_dir);
EFI_HANDLE next_image_handle = 0;
if (!config.boot_path) {
Print(L"HackBGRT: Boot path not specified.\n");
goto fail;
} else {
Debug(L"HackBGRT: Loading application %s.\n", config.boot_path);
EFI_DEVICE_PATH* boot_dp = FileDevicePath(image->DeviceHandle, (CHAR16*) config.boot_path);
if (EFI_ERROR(BS->LoadImage(0, image_handle, boot_dp, 0, 0, &next_image_handle))) {
Print(L"HackBGRT: Failed to load application %s.\n", config.boot_path);
}
}
Debug(L"HackBGRT: Loading %s.\n", config.boot_path);
EFI_DEVICE_PATH* boot_dp = FileDevicePath(image->DeviceHandle, (CHAR16*) config.boot_path);
EFI_HANDLE next_image_handle;
if (EFI_ERROR(BS->LoadImage(0, image_handle, boot_dp, 0, 0, &next_image_handle))) {
Print(L"HackBGRT: LoadImage for new image (%s) failed.\n", config.boot_path);
goto fail;
if (!next_image_handle) {
static CHAR16 default_boot_path[] = L"\\EFI\\HackBGRT\\bootmgfw-original.efi";
Debug(L"HackBGRT: Loading application %s.\n", default_boot_path);
EFI_DEVICE_PATH* boot_dp = FileDevicePath(image->DeviceHandle, default_boot_path);
if (EFI_ERROR(BS->LoadImage(0, image_handle, boot_dp, 0, 0, &next_image_handle))) {
Print(L"HackBGRT: Also failed to load application %s.\n", default_boot_path);
goto fail;
}
Print(L"HackBGRT: Reverting to %s.\n", default_boot_path);
Print(L"Press escape to cancel, any other key to boot.\n");
if (ReadKey().ScanCode == SCAN_ESC) {
goto fail;
}
config.boot_path = default_boot_path;
}
if (config.debug) {
Print(L"HackBGRT: Ready to boot.\nPress escape to cancel, any other key to boot.\n");
@@ -374,7 +387,7 @@ EFI_STATUS EFIAPI EfiMain(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *ST_) {
}
}
if (EFI_ERROR(BS->StartImage(next_image_handle, 0, 0))) {
Print(L"HackBGRT: StartImage for %s failed.\n", config.boot_path);
Print(L"HackBGRT: Failed to start %s.\n", config.boot_path);
goto fail;
}
Print(L"HackBGRT: Started %s. Why are we still here?!\n", config.boot_path);
@@ -382,6 +395,7 @@ EFI_STATUS EFIAPI EfiMain(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *ST_) {
fail: {
Print(L"HackBGRT has failed. Use parameter debug=1 for details.\n");
Print(L"Get a Windows install disk or a recovery disk to fix your boot.\n");
#ifdef GIT_DESCRIBE
Print(L"HackBGRT version: " GIT_DESCRIBE L"\n");
#else