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| author | Anthony PERARD <anthony.perard@citrix.com> | 2019-08-13 12:30:56 +0100 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2019-08-21 18:03:49 +0200 |
| commit | 60d265451a84804cbbb47620fd5450f41faa1bc5 (patch) | |
| tree | 2cf3a8d68ecee88c116ee0fead1bf26fb734b146 /OvmfPkg/XenPlatformPei | |
| parent | 594b5002a63113ff867782378e20df343f77ebc0 (diff) | |
| download | edk2-60d265451a84804cbbb47620fd5450f41faa1bc5.tar.gz edk2-60d265451a84804cbbb47620fd5450f41faa1bc5.tar.bz2 edk2-60d265451a84804cbbb47620fd5450f41faa1bc5.zip | |
OvmfPkg/XenPlatformPei: Grab RSDP from PVH guest start of day struct
Check if there's a start of the day struct provided to PVH guest, save
the ACPI RSDP address for later.
This patch import import arch-x86/hvm/start_info.h from xen.git.
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1689
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20190813113119.14804-13-anthony.perard@citrix.com>
Diffstat (limited to 'OvmfPkg/XenPlatformPei')
| -rw-r--r-- | OvmfPkg/XenPlatformPei/Xen.c | 25 | ||||
| -rw-r--r-- | OvmfPkg/XenPlatformPei/XenPlatformPei.inf | 3 |
2 files changed, 28 insertions, 0 deletions
diff --git a/OvmfPkg/XenPlatformPei/Xen.c b/OvmfPkg/XenPlatformPei/Xen.c index 5c7d7ddc1c..b366139a0a 100644 --- a/OvmfPkg/XenPlatformPei/Xen.c +++ b/OvmfPkg/XenPlatformPei/Xen.c @@ -25,6 +25,7 @@ #include <IndustryStandard/E820.h>
#include <Library/ResourcePublicationLib.h>
#include <Library/MtrrLib.h>
+#include <IndustryStandard/Xen/arch-x86/hvm/start_info.h>
#include "Platform.h"
#include "Xen.h"
@@ -86,6 +87,7 @@ XenConnect ( UINT32 XenVersion;
EFI_XEN_OVMF_INFO *Info;
CHAR8 Sig[sizeof (Info->Signature) + 1];
+ UINT32 *PVHResetVectorData;
AsmCpuid (XenLeaf + 2, &TransferPages, &TransferReg, NULL, NULL);
mXenInfo.HyperPages = AllocatePages (TransferPages);
@@ -121,6 +123,29 @@ XenConnect ( mXenHvmloaderInfo = NULL;
}
+ mXenInfo.RsdpPvh = NULL;
+
+ //
+ // Locate and use information from the start of day structure if we have
+ // booted via the PVH entry point.
+ //
+
+ PVHResetVectorData = (VOID *)(UINTN) PcdGet32 (PcdXenPvhStartOfDayStructPtr);
+ //
+ // That magic value is written in XenResetVector/Ia32/XenPVHMain.asm
+ //
+ if (PVHResetVectorData[1] == SIGNATURE_32 ('X', 'P', 'V', 'H')) {
+ struct hvm_start_info *HVMStartInfo;
+
+ HVMStartInfo = (VOID *)(UINTN) PVHResetVectorData[0];
+ if (HVMStartInfo->magic == XEN_HVM_START_MAGIC_VALUE) {
+ ASSERT (HVMStartInfo->rsdp_paddr != 0);
+ if (HVMStartInfo->rsdp_paddr != 0) {
+ mXenInfo.RsdpPvh = (VOID *)(UINTN)HVMStartInfo->rsdp_paddr;
+ }
+ }
+ }
+
BuildGuidDataHob (
&gEfiXenInfoGuid,
&mXenInfo,
diff --git a/OvmfPkg/XenPlatformPei/XenPlatformPei.inf b/OvmfPkg/XenPlatformPei/XenPlatformPei.inf index d1265c365a..4d00206d09 100644 --- a/OvmfPkg/XenPlatformPei/XenPlatformPei.inf +++ b/OvmfPkg/XenPlatformPei/XenPlatformPei.inf @@ -84,6 +84,9 @@ gEfiSecurityPkgTokenSpaceGuid.PcdOptionRomImageVerificationPolicy
gUefiCpuPkgTokenSpaceGuid.PcdCpuLocalApicBaseAddress
+ gUefiOvmfPkgTokenSpaceGuid.PcdXenPvhStartOfDayStructPtr
+ gUefiOvmfPkgTokenSpaceGuid.PcdXenPvhStartOfDayStructPtrSize
+
[FixedPcd]
gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress
|