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| author | Laszlo Ersek <lersek@redhat.com> | 2014-03-22 07:13:09 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2014-03-22 07:13:09 +0000 |
| commit | bdaf30e4e6eb0172c4adecad6276e7bc26714b6a (patch) | |
| tree | 46f0723b5d80b62f22cc451ff56f9a8c28b1458b | |
| parent | 5267c89b4d114e16d5573f09c6f37af0b078abee (diff) | |
| download | edk2-platforms-bdaf30e4e6eb0172c4adecad6276e7bc26714b6a.tar.xz | |
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 <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15366 6f19259b-4bc3-4df7-8a09-765794883524
| -rw-r--r-- | OvmfPkg/PlatformDxe/Platform.c | 41 | ||||
| -rw-r--r-- | OvmfPkg/PlatformDxe/Platform.inf | 4 |
2 files changed, 45 insertions, 0 deletions
diff --git a/OvmfPkg/PlatformDxe/Platform.c b/OvmfPkg/PlatformDxe/Platform.c index 7e2353035c..a6172a8018 100644 --- a/OvmfPkg/PlatformDxe/Platform.c +++ b/OvmfPkg/PlatformDxe/Platform.c @@ -17,6 +17,46 @@ #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.
@@ -33,6 +73,7 @@ PlatformInit ( IN EFI_SYSTEM_TABLE *SystemTable
)
{
+ ExecutePlatformConfig ();
return EFI_SUCCESS;
}
diff --git a/OvmfPkg/PlatformDxe/Platform.inf b/OvmfPkg/PlatformDxe/Platform.inf index 47ed25b5c7..315f55949d 100644 --- a/OvmfPkg/PlatformDxe/Platform.inf +++ b/OvmfPkg/PlatformDxe/Platform.inf @@ -42,6 +42,10 @@ UefiRuntimeServicesTableLib
UefiDriverEntryPoint
+[Pcd]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdVideoHorizontalResolution
+ gEfiMdeModulePkgTokenSpaceGuid.PcdVideoVerticalResolution
+
[Guids]
gOvmfPlatformConfigGuid
|