diff options
Diffstat (limited to 'OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c')
| -rw-r--r-- | OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c b/OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c index 31c3378856..daab658a1f 100644 --- a/OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c +++ b/OvmfPkg/Library/PlatformBdsLib/QemuBootOrder.c @@ -1013,6 +1013,105 @@ Exit: /**
+ Append some of the unselected active boot options to the boot order.
+
+ This function should accommodate any further policy changes in "boot option
+ survival". Currently we're adding back everything that starts with neither
+ PciRoot() nor HD().
+
+ @param[in,out] BootOrder The structure holding the boot order to
+ complete. The caller is responsible for
+ initializing (and potentially populating) it
+ before calling this function.
+
+ @param[in,out] ActiveOption The array of active boot options to scan.
+ Entries marked as Appended will be skipped.
+ Those of the rest that satisfy the survival
+ policy will be added to BootOrder with
+ BootOrderAppend().
+
+ @param[in] ActiveCount Number of elements in ActiveOption.
+
+
+ @retval RETURN_SUCCESS BootOrder has been extended with any eligible boot
+ options.
+
+ @return Error codes returned by BootOrderAppend().
+**/
+STATIC
+RETURN_STATUS
+BootOrderComplete (
+ IN OUT BOOT_ORDER *BootOrder,
+ IN OUT ACTIVE_OPTION *ActiveOption,
+ IN UINTN ActiveCount
+ )
+{
+ RETURN_STATUS Status;
+ UINTN Idx;
+
+ Status = RETURN_SUCCESS;
+ Idx = 0;
+ while (!RETURN_ERROR (Status) && Idx < ActiveCount) {
+ if (!ActiveOption[Idx].Appended) {
+ CONST BDS_COMMON_OPTION *Current;
+ CONST EFI_DEVICE_PATH_PROTOCOL *FirstNode;
+
+ Current = ActiveOption[Idx].BootOption;
+ FirstNode = Current->DevicePath;
+ if (FirstNode != NULL) {
+ CHAR16 *Converted;
+ STATIC CHAR16 ConvFallBack[] = L"<unable to convert>";
+ BOOLEAN Keep;
+
+ Converted = ConvertDevicePathToText (FirstNode, FALSE, FALSE);
+ if (Converted == NULL) {
+ Converted = ConvFallBack;
+ }
+
+ Keep = TRUE;
+ if (DevicePathType(FirstNode) == MEDIA_DEVICE_PATH &&
+ DevicePathSubType(FirstNode) == MEDIA_HARDDRIVE_DP) {
+ //
+ // drop HD()
+ //
+ Keep = FALSE;
+ } else if (DevicePathType(FirstNode) == ACPI_DEVICE_PATH &&
+ DevicePathSubType(FirstNode) == ACPI_DP) {
+ ACPI_HID_DEVICE_PATH *Acpi;
+
+ Acpi = (ACPI_HID_DEVICE_PATH *) FirstNode;
+ if ((Acpi->HID & PNP_EISA_ID_MASK) == PNP_EISA_ID_CONST &&
+ EISA_ID_TO_NUM (Acpi->HID) == 0x0a03) {
+ //
+ // drop PciRoot()
+ //
+ Keep = FALSE;
+ }
+ }
+
+ if (Keep) {
+ Status = BootOrderAppend (BootOrder, &ActiveOption[Idx]);
+ if (!RETURN_ERROR (Status)) {
+ DEBUG ((DEBUG_VERBOSE, "%a: keeping \"%s\"\n", __FUNCTION__,
+ Converted));
+ }
+ } else {
+ DEBUG ((DEBUG_VERBOSE, "%a: dropping \"%s\"\n", __FUNCTION__,
+ Converted));
+ }
+
+ if (Converted != ConvFallBack) {
+ FreePool (Converted);
+ }
+ }
+ }
+ ++Idx;
+ }
+ return Status;
+}
+
+
+/**
Set the boot order based on configuration retrieved from QEMU.
@@ -1140,6 +1239,15 @@ SetBootOrderFromQemu ( if (Status == RETURN_NOT_FOUND && BootOrder.Produced > 0) {
//
// No more OpenFirmware paths, some matches found: rewrite BootOrder NvVar.
+ // Some of the active boot options that have not been selected over fw_cfg
+ // should be preserved at the end of the boot order.
+ //
+ Status = BootOrderComplete (&BootOrder, ActiveOption, ActiveCount);
+ if (RETURN_ERROR (Status)) {
+ goto ErrorFreeActiveOption;
+ }
+
+ //
// See Table 10 in the UEFI Spec 2.3.1 with Errata C for the required
// attributes.
//
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