Changeset 100456 in vbox for trunk/include

Timestamp:

Jul 10, 2023 1:46:21 PM (17 months ago)

Author:

vboxsync

Message:

BIOS: Added a way for the APM BIOS to halt the virtual CPU through port I/O instead of HLT to solve problems with obstinate guests (see bugref:6549).

Location:

trunk/include/VBox

Files:

trunk/include/VBox/bios.h

-              r98103
+              r100456
 #endif
+/** The BIOS shutdown port.
+ * You write "Shutdown" byte by byte to shutdown the VM.
+/** The BIOS control port.
+ * Write "Shutdown" byte by byte to shutdown the VM.
+ * Write "Bootfail" to indicate no bootable device.
+ * Write "Prochalt" to execute alternative CPU halt.
  * @sa VBOX_BIOS_OLD_SHUTDOWN_PORT  */
 #define VBOX_BIOS_SHUTDOWN_PORT                 0x040f
+/** Write this value to shut down VM. */
+#define VBOX_BIOS_CTL_SHUTDOWN                  0x8001
+/** Write this value to report boot failure. */
+#define VBOX_BIOS_CTL_BOOTFAIL                  0x8002
+/** Write this value to halt CPU. */
+#define VBOX_BIOS_CTL_PROCHALT                  0x8003
 /** The old shutdown port number.
  * Older versions of VirtualBox uses this as does Bochs.
  * @sa VBOX_BIOS_SHUTDOWN_PORT  */
+ * @sa VBOX_BIOS_CONTROL_PORT  */
 #define VBOX_BIOS_OLD_SHUTDOWN_PORT             0x8900

-              r98103
+              r100456
 %endif
 %define VBOX_BIOS_SHUTDOWN_PORT                 0x040f
+%define VBOX_BIOS_CTL_SHUTDOWN                  0x8001
+%define VBOX_BIOS_CTL_BOOTFAIL                  0x8002
+%define VBOX_BIOS_CTL_PROCHALT                  0x8003
 %define VBOX_BIOS_OLD_SHUTDOWN_PORT             0x8900
 %endif

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