Revision: 15366
http://sourceforge.net/p/edk2/code/15366
Author: jljusten
Date: 2014-03-22 07:13:09 +0000 (Sat, 22 Mar 2014)
Log Message:
-----------
OvmfPkg: PlatformDxe: set preferred video resolution from platform config
The GraphicsConsoleDxe driver (in MdeModulePkg/Universal/Console)
determines the preferred video resolution from the dynamic PCDs
- gEfiMdeModulePkgTokenSpaceGuid.PcdVideoHorizontalResolution
- gEfiMdeModulePkgTokenSpaceGuid.PcdVideoVerticalResolution
Setting the graphics resolution during boot is useful when the guest OS
(for lack of a dedicated display driver) continues to work with the
original GOP resolution and framebuffer.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <[email protected]>
Reviewed-by: Jordan Justen <[email protected]>
Modified Paths:
--------------
trunk/edk2/OvmfPkg/PlatformDxe/Platform.c
trunk/edk2/OvmfPkg/PlatformDxe/Platform.inf
Modified: trunk/edk2/OvmfPkg/PlatformDxe/Platform.c
===================================================================
--- trunk/edk2/OvmfPkg/PlatformDxe/Platform.c 2014-03-22 07:13:02 UTC (rev
15365)
+++ trunk/edk2/OvmfPkg/PlatformDxe/Platform.c 2014-03-22 07:13:09 UTC (rev
15366)
@@ -17,7 +17,47 @@
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
+#include "PlatformConfig.h"
+
/**
+ Load and execute the platform configuration.
+
+ @retval EFI_SUCCESS Configuration loaded and executed.
+ @return Status codes from PlatformConfigLoad().
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+ExecutePlatformConfig (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ PLATFORM_CONFIG PlatformConfig;
+ UINT64 OptionalElements;
+
+ Status = PlatformConfigLoad (&PlatformConfig, &OptionalElements);
+ if (EFI_ERROR (Status)) {
+ DEBUG (((Status == EFI_NOT_FOUND) ? EFI_D_VERBOSE : EFI_D_ERROR,
+ "%a: failed to load platform config: %r\n", __FUNCTION__, Status));
+ return Status;
+ }
+
+ if (OptionalElements & PLATFORM_CONFIG_F_GRAPHICS_RESOLUTION) {
+ //
+ // Pass the preferred resolution to GraphicsConsoleDxe via dynamic PCDs.
+ //
+ PcdSet32 (PcdVideoHorizontalResolution,
+ PlatformConfig.HorizontalResolution);
+ PcdSet32 (PcdVideoVerticalResolution,
+ PlatformConfig.VerticalResolution);
+ }
+
+ return EFI_SUCCESS;
+}
+
+
+/**
Entry point for this driver.
@param[in] ImageHandle Image handle of this driver.
@@ -33,6 +73,7 @@
IN EFI_SYSTEM_TABLE *SystemTable
)
{
+ ExecutePlatformConfig ();
return EFI_SUCCESS;
}
Modified: trunk/edk2/OvmfPkg/PlatformDxe/Platform.inf
===================================================================
--- trunk/edk2/OvmfPkg/PlatformDxe/Platform.inf 2014-03-22 07:13:02 UTC (rev
15365)
+++ trunk/edk2/OvmfPkg/PlatformDxe/Platform.inf 2014-03-22 07:13:09 UTC (rev
15366)
@@ -42,6 +42,10 @@
UefiRuntimeServicesTableLib
UefiDriverEntryPoint
+[Pcd]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdVideoHorizontalResolution
+ gEfiMdeModulePkgTokenSpaceGuid.PcdVideoVerticalResolution
+
[Guids]
gOvmfPlatformConfigGuid
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