i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

EFI: add support for graphics mode output

Browse Source 
* We can now switch between graphics and text modes, and display
  the splash screen
This commit is contained in:
Jessica Hamilton
2016-09-02 19:02:35 +12:00
parent dbf1363b41
commit 325b1e3787
2 changed files with 69 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/system/boot/platform/efi/console.cpp
+1
View File
@@ -243,4 +243,5 @@ platform_switch_to_text_mode(void)
{
kSystemTable->ConOut->Reset(kSystemTable->ConOut, false);
kSystemTable->ConOut->SetMode(kSystemTable->ConOut, sScreenMode);
gKernelArgs.frame_buffer.enabled = false;
}
src/system/boot/platform/efi/video.cpp
+68 -1
View File
@@ -4,22 +4,89 @@
*/
#include <boot/kernel_args.h>
#include <boot/platform.h>
#include <boot/platform/generic/video.h>
#include <boot/stage2.h>
#include "efi_platform.h"
static EFI_GUID sGraphicsOutputGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
static EFI_GRAPHICS_OUTPUT_PROTOCOL *sGraphicsOutput;
static UINTN sGraphicsMode;
extern "C" status_t
platform_init_video(void)
{
return B_ERROR;
EFI_STATUS status = kBootServices->LocateProtocol(&sGraphicsOutputGuid,
NULL, (void **)&sGraphicsOutput);
if (sGraphicsOutput == NULL || status != EFI_SUCCESS) {
gKernelArgs.frame_buffer.enabled = false;
sGraphicsOutput = NULL;
return B_ERROR;
}
UINTN bestArea = 0;
UINTN bestDepth = 0;
for (UINTN mode = 0; mode < sGraphicsOutput->Mode->MaxMode; ++mode) {
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info;
UINTN size, depth;
sGraphicsOutput->QueryMode(sGraphicsOutput, mode, &size, &info);
UINTN area = info->HorizontalResolution * info->VerticalResolution;
if (info->PixelFormat == PixelRedGreenBlueReserved8BitPerColor)
depth = 32;
else if (info->PixelFormat == PixelBitMask
&& info->PixelInformation.RedMask == 0xFF0000
&& info->PixelInformation.GreenMask == 0x00FF00
&& info->PixelInformation.BlueMask == 0x0000FF
&& info->PixelInformation.ReservedMask == 0)
depth = 24;
else
continue;
area *= depth;
if (area >= bestArea) {
bestArea = area;
bestDepth = depth;
sGraphicsMode = mode;
}
}
if (bestArea == 0 || bestDepth == 0) {
sGraphicsOutput = NULL;
return B_ERROR;
}
return B_OK;
}
extern "C" void
platform_switch_to_logo(void)
{
if (sGraphicsOutput == NULL || gKernelArgs.frame_buffer.enabled)
return;
sGraphicsOutput->SetMode(sGraphicsOutput, sGraphicsMode);
gKernelArgs.frame_buffer.enabled = true;
gKernelArgs.frame_buffer.physical_buffer.start =
sGraphicsOutput->Mode->FrameBufferBase;
gKernelArgs.frame_buffer.physical_buffer.size =
sGraphicsOutput->Mode->FrameBufferSize;
gKernelArgs.frame_buffer.width =
sGraphicsOutput->Mode->Info->HorizontalResolution;
gKernelArgs.frame_buffer.height =
sGraphicsOutput->Mode->Info->VerticalResolution;
gKernelArgs.frame_buffer.depth =
sGraphicsOutput->Mode->Info->PixelFormat == PixelBitMask ? 24 : 32;
gKernelArgs.frame_buffer.bytes_per_row =
sGraphicsOutput->Mode->Info->PixelsPerScanLine
* gKernelArgs.frame_buffer.depth / 8;
video_display_splash(gKernelArgs.frame_buffer.physical_buffer.start);
}