Sync/gnu-efi/apps/modelist.c
Curle d588e232c4 Major overhaul of this branch.
This branch has been dedicated to purely the UEFI bootloader.
As such, all other code has been removed.

This code can be compiled with Visual Studio, gcc or llvm.
2019-07-17 21:10:29 +01:00

109 lines
2.5 KiB
C

#include <efi.h>
#include <efilib.h>
extern EFI_GUID GraphicsOutputProtocol;
static void
print_modes(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop)
{
int i, imax;
EFI_STATUS rc;
if (gop->Mode) {
imax = gop->Mode->MaxMode;
Print(L"GOP reports MaxMode %d\n", imax);
} else {
Print(L"gop->Mode is NULL\n");
imax = 1;
}
for (i = 0; i < imax; i++) {
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info;
UINTN SizeOfInfo;
rc = uefi_call_wrapper(gop->QueryMode, 4, gop, i, &SizeOfInfo,
&info);
if (EFI_ERROR(rc) && rc == EFI_NOT_STARTED) {
Print(L"gop->QueryMode() returned %r\n", rc);
Print(L"Trying to start GOP with SetMode().\n");
rc = uefi_call_wrapper(gop->SetMode, 2, gop,
gop->Mode ? gop->Mode->Mode : 0);
rc = uefi_call_wrapper(gop->QueryMode, 4, gop, i,
&SizeOfInfo, &info);
}
if (EFI_ERROR(rc)) {
Print(L"%d: Bad response from QueryMode: %r (%d)\n",
i, rc, rc);
continue;
}
Print(L"%c%d: %dx%d ",
(gop->Mode &&
CompareMem(info,gop->Mode->Info,sizeof(*info)) == 0
) ? '*' : ' ',
i, info->HorizontalResolution, info->VerticalResolution);
switch(info->PixelFormat) {
case PixelRedGreenBlueReserved8BitPerColor:
Print(L"RGBR");
break;
case PixelBlueGreenRedReserved8BitPerColor:
Print(L"BGRR");
break;
case PixelBitMask:
Print(L"R:%08x G:%08x B:%08x X:%08x",
info->PixelInformation.RedMask,
info->PixelInformation.GreenMask,
info->PixelInformation.BlueMask,
info->PixelInformation.ReservedMask);
break;
case PixelBltOnly:
Print(L"(blt only)");
break;
default:
Print(L"(Invalid pixel format)");
break;
}
Print(L" pitch %d\n", info->PixelsPerScanLine);
}
}
static EFI_STATUS
SetWatchdog(UINTN seconds)
{
EFI_STATUS rc;
rc = uefi_call_wrapper(BS->SetWatchdogTimer, 4, seconds, 0x1ffff,
0, NULL);
if (EFI_ERROR(rc)) {
CHAR16 Buffer[64];
StatusToString(Buffer, rc);
Print(L"Bad response from QueryMode: %s (%d)\n", Buffer, rc);
}
return rc;
}
EFI_STATUS
efi_main (EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *systab)
{
EFI_STATUS rc;
EFI_GRAPHICS_OUTPUT_PROTOCOL *gop;
InitializeLib(image_handle, systab);
SetWatchdog(10);
rc = LibLocateProtocol(&GraphicsOutputProtocol, (void **)&gop);
if (EFI_ERROR(rc)) {
Print(L"Could not locate GOP: %r\n", rc);
return rc;
}
if (!gop) {
Print(L"LocateProtocol(GOP, &gop) returned %r but GOP is NULL\n", rc);
return EFI_UNSUPPORTED;
}
print_modes(gop);
SetWatchdog(0);
return EFI_SUCCESS;
}