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[fallback] Try to execute the first new boot option.

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I'm told rebooting is sometimes unreliable when called here, and we'll
get bootx64.efi loaded anyway.  I'll just assume that's true and try to
load the first option, since it's clearly what we'd prefer happens next.

Signed-off-by: Peter Jones <pjones@redhat.com>
This commit is contained in:
Peter Jones 2013-05-02 14:58:44 -04:00
parent 4f80140b53
commit 8807e36aae
1 changed files with 41 additions and 1 deletions
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42
fallback.c
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@ -114,6 +114,10 @@ make_full_path(CHAR16 *dirname, CHAR16 *filename, CHAR16 **out, UINT64 *outlen)
CHAR16 *bootorder = NULL;
int nbootorder = 0;
EFI_DEVICE_PATH *first_new_option = NULL;
VOID *first_new_option_args = NULL;
UINTN first_new_option_size = 0;
EFI_STATUS
add_boot_option(EFI_DEVICE_PATH *dp, CHAR16 *filename, CHAR16 *label, CHAR16 *arguments)
{
@ -284,6 +288,13 @@ add_to_boot_list(EFI_FILE_HANDLE fh, CHAR16 *dirname, CHAR16 *filename, CHAR16 *
CHAR16 *dps = DevicePathToStr(dp);
Print(L"device path: \"%s\"\n", dps);
#endif
if (!first_new_option) {
CHAR16 *dps = DevicePathToStr(dp);
Print(L"device path: \"%s\"\n", dps);
first_new_option = DuplicateDevicePath(dp);
first_new_option_args = arguments;
first_new_option_size = StrLen(arguments) * sizeof (CHAR16);
}
add_boot_option(dp, fullpath, label, arguments);
@ -596,6 +607,33 @@ find_boot_options(EFI_HANDLE device)
uefi_call_wrapper(fh->Close, 1, fh);
return rc;
}
static EFI_STATUS
try_start_first_option(EFI_HANDLE parent_image_handle)
{
EFI_STATUS rc;
EFI_HANDLE image_handle;
if (!first_new_option) {
return EFI_SUCCESS;
}
rc = uefi_call_wrapper(BS->LoadImage, 6, 0, parent_image_handle,
first_new_option, NULL, 0,
&image_handle);
if (EFI_ERROR(rc)) {
Print(L"LoadImage failed: %d\n", rc);
uefi_call_wrapper(BS->Stall, 1, 2000000);
return rc;
}
rc = uefi_call_wrapper(BS->StartImage, 3, image_handle, NULL, NULL);
if (EFI_ERROR(rc)) {
Print(L"StartImage failed: %d\n", rc);
uefi_call_wrapper(BS->Stall, 1, 2000000);
}
return rc;
}
EFI_STATUS
efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *systab)
{
@ -617,8 +655,10 @@ efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *systab)
return rc;
}
try_start_first_option(image);
Print(L"Reset System\n");
uefi_call_wrapper(RT->ResetSystem, 4, EfiResetWarm,
uefi_call_wrapper(RT->ResetSystem, 4, EfiResetCold,
EFI_SUCCESS, 0, NULL);
return EFI_SUCCESS;