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OvmfPkg: Handle Cloud Hypervisor host bridge

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Handle things differently when the detected host bridge matches the
Cloud Hypervisor PCI host bridge identifier.

Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf
2021-12-10 22:41:54 +08:00
committed by mergify[bot]
parent e81a81e584
commit 9afcd48a94
10 changed files with 78 additions and 3 deletions
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13
OvmfPkg/Library/ResetSystemLib/DxeResetShutdown.c
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@@ -16,6 +16,7 @@
#include <OvmfPlatforms.h> // PIIX4_PMBA_VALUE
STATIC UINT16 mAcpiPmBaseAddress;
STATIC UINT16 mAcpiHwReducedSleepCtl;
EFI_STATUS
EFIAPI
@@ -34,6 +35,9 @@ DxeResetInit (
case INTEL_Q35_MCH_DEVICE_ID:
mAcpiPmBaseAddress = ICH9_PMBASE_VALUE;
break;
case CLOUDHV_DEVICE_ID:
mAcpiHwReducedSleepCtl = CLOUDHV_ACPI_SHUTDOWN_IO_ADDRESS;
break;
default:
ASSERT (FALSE);
CpuDeadLoop ();
@@ -56,7 +60,12 @@ ResetShutdown (
VOID
)
{
IoBitFieldWrite16 (mAcpiPmBaseAddress + 4, 10, 13, 0);
IoOr16 (mAcpiPmBaseAddress + 4, BIT13);
if (mAcpiHwReducedSleepCtl) {
IoWrite8 (mAcpiHwReducedSleepCtl, 5 << 2 | 1 << 5);
} else {
IoBitFieldWrite16 (mAcpiPmBaseAddress + 4, 10, 13, 0);
IoOr16 (mAcpiPmBaseAddress + 4, BIT13);
}
CpuDeadLoop ();
}