Changeset 100704 in vbox

Timestamp:

Jul 26, 2023 12:09:51 PM (16 months ago)

Author:

vboxsync

Message:

Devices/EFI/Firmware/VmwSvga3: Need to enable framebuffer dirty tracking to get screen output when a guest uses the framebuffer without sending the approproiate update commands (everything using GOP, like Linux efifb or FreeBSD), bugref:10490

Location:

trunk/src/VBox/Devices/EFI/Firmware/VBoxPkg/VmwSvga3Dxe

Files:

• Gop.c (modified) (1 diff)
• VmwSvga3.h (modified) (1 diff)

trunk/src/VBox/Devices/EFI/Firmware/VBoxPkg/VmwSvga3Dxe/Gop.c

@@ -224 +224 @@
   VmwSvga3WriteReg(Private, VMWSVGA3_REG_ENABLE,      1);
   VmwSvga3WriteReg(Private, VMWSVGA3_REG_CONFIG_DONE, 1);
+  //
+  // Need to update the screen on refresh intervals or we don't get screen output
+  // when the operating system accesses the framebuffer.
+  //
+  VmwSvga3WriteReg(Private, VMWSVGA3_REG_TRACES,      1);
 
   //

trunk/src/VBox/Devices/EFI/Firmware/VBoxPkg/VmwSvga3Dxe/VmwSvga3.h

@@ -162 +162 @@
 #define VMWSVGA3_REG_CONFIG_DONE     80
 #define VMWSVGA3_REG_IRQMASK         132
+#define VMWSVGA3_REG_TRACES          180
 #define VMWSVGA3_REG_COMMAND_LOW     192
 #define VMWSVGA3_REG_COMMAND_HIGH    196