From: "Anthony PERARD" <anthony.perard@citrix.com>
To: <devel@edk2.groups.io>
Cc: Laszlo Ersek <lersek@redhat.com>,
Jordan Justen <jordan.l.justen@intel.com>,
Julien Grall <julien.grall@arm.com>,
<xen-devel@lists.xenproject.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Anthony PERARD <anthony.perard@citrix.com>
Subject: [PATCH v5 10/35] OvmfPkg/XenPlatformPei: Detect OVMF_INFO from hvmloader
Date: Tue, 13 Aug 2019 12:30:54 +0100 [thread overview]
Message-ID: <20190813113119.14804-11-anthony.perard@citrix.com> (raw)
In-Reply-To: <20190813113119.14804-1-anthony.perard@citrix.com>
EFI_XEN_OVMF_INFO is only useful to retrieve the E820 table. The
mXenHvmloaderInfo isn't used yet, but will be use in a further patch to
retrieve the E820 table.
Also remove the unused pointer from the XenInfo HOB as that information
is only useful in the XenPlatformPei.
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>
---
Notes:
v3:
- fix coding style
- fix commit message
OvmfPkg/Include/Guid/XenInfo.h | 4 ----
OvmfPkg/PlatformPei/Xen.c | 3 ---
OvmfPkg/XenPlatformPei/Xen.c | 25 +++++++++++++++++++++++--
3 files changed, 23 insertions(+), 9 deletions(-)
diff --git a/OvmfPkg/Include/Guid/XenInfo.h b/OvmfPkg/Include/Guid/XenInfo.h
index 25d76a7828..b052d618fd 100644
--- a/OvmfPkg/Include/Guid/XenInfo.h
+++ b/OvmfPkg/Include/Guid/XenInfo.h
@@ -18,10 +18,6 @@ typedef struct {
///
VOID *HyperPages;
///
- /// Location of the hvm_info page.
- ///
- VOID *HvmInfo;
- ///
/// Hypervisor major version.
///
UINT16 VersionMajor;
diff --git a/OvmfPkg/PlatformPei/Xen.c b/OvmfPkg/PlatformPei/Xen.c
index 89dc4143b2..3e15b32a73 100644
--- a/OvmfPkg/PlatformPei/Xen.c
+++ b/OvmfPkg/PlatformPei/Xen.c
@@ -98,9 +98,6 @@ XenConnect (
mXenInfo.VersionMajor = (UINT16)(XenVersion >> 16);
mXenInfo.VersionMinor = (UINT16)(XenVersion & 0xFFFF);
- /* TBD: Locate hvm_info and reserve it away. */
- mXenInfo.HvmInfo = NULL;
-
BuildGuidDataHob (
&gEfiXenInfoGuid,
&mXenInfo,
diff --git a/OvmfPkg/XenPlatformPei/Xen.c b/OvmfPkg/XenPlatformPei/Xen.c
index f4d0d1c73b..9962fe9fc7 100644
--- a/OvmfPkg/XenPlatformPei/Xen.c
+++ b/OvmfPkg/XenPlatformPei/Xen.c
@@ -33,6 +33,12 @@ STATIC UINT32 mXenLeaf = 0;
EFI_XEN_INFO mXenInfo;
+//
+// Location of the firmware info struct setup by hvmloader.
+// Only the E820 table is used by OVMF.
+//
+EFI_XEN_OVMF_INFO *mXenHvmloaderInfo;
+
/**
Returns E820 map provided by Xen
@@ -78,6 +84,8 @@ XenConnect (
UINT32 TransferReg;
UINT32 TransferPages;
UINT32 XenVersion;
+ EFI_XEN_OVMF_INFO *Info;
+ CHAR8 Sig[sizeof (Info->Signature) + 1];
AsmCpuid (XenLeaf + 2, &TransferPages, &TransferReg, NULL, NULL);
mXenInfo.HyperPages = AllocatePages (TransferPages);
@@ -97,8 +105,21 @@ XenConnect (
mXenInfo.VersionMajor = (UINT16)(XenVersion >> 16);
mXenInfo.VersionMinor = (UINT16)(XenVersion & 0xFFFF);
- /* TBD: Locate hvm_info and reserve it away. */
- mXenInfo.HvmInfo = NULL;
+ //
+ // Check if there are information left by hvmloader
+ //
+
+ Info = (EFI_XEN_OVMF_INFO *)(UINTN) OVMF_INFO_PHYSICAL_ADDRESS;
+ //
+ // Copy the signature, and make it null-terminated.
+ //
+ AsciiStrnCpyS (Sig, sizeof (Sig), (CHAR8 *) &Info->Signature,
+ sizeof (Info->Signature));
+ if (AsciiStrCmp (Sig, "XenHVMOVMF") == 0) {
+ mXenHvmloaderInfo = Info;
+ } else {
+ mXenHvmloaderInfo = NULL;
+ }
BuildGuidDataHob (
&gEfiXenInfoGuid,
--
Anthony PERARD
next prev parent reply other threads:[~2019-08-13 11:57 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-13 11:30 [PATCH v5 00/35] Specific platform to run OVMF in Xen PVH and HVM guests Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 01/35] OvmfPkg/ResetSystemLib: Add missing dependency on PciLib Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 02/35] OvmfPkg: Create platform OvmfXen Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 03/35] OvmfPkg: Introduce XenResetVector Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 04/35] OvmfPkg: Introduce XenPlatformPei Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 05/35] OvmfPkg/OvmfXen: Creating an ELF header Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 06/35] OvmfPkg/XenResetVector: Add new entry point for Xen PVH Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 07/35] OvmfPkg/XenResetVector: Saving start of day pointer for PVH guests Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 08/35] OvmfPkg/XenResetVector: Allow jumpstart from either hvmloader or PVH Anthony PERARD
2019-08-21 16:31 ` [edk2-devel] " Laszlo Ersek
2019-08-13 11:30 ` [PATCH v5 09/35] OvmfPkg/OvmfXen: use a TimerLib instance that depends only on the CPU Anthony PERARD
2019-08-13 11:30 ` Anthony PERARD [this message]
2019-08-13 11:30 ` [PATCH v5 11/35] OvmfPkg/XenPlatformPei: Use mXenHvmloaderInfo to get E820 Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 12/35] OvmfPkg/XenPlatformPei: Grab RSDP from PVH guest start of day struct Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 13/35] OvmfPkg/Library/XenPlatformLib: New library Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 14/35] OvmfPkg/AcpiPlatformDxe: Use XenPlatformLib Anthony PERARD
2019-08-13 11:30 ` [PATCH v5 15/35] OvmfPkg/AcpiPlatformDxe: Use Xen PVH RSDP if it exist Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 16/35] OvmfPkg/XenHypercallLib: Enable it in PEIM Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 17/35] OvmfPkg/XenPlatformPei: Reinit XenHypercallLib Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 18/35] OvmfPkg/XenPlatformPei: Introduce XenHvmloaderDetected Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 19/35] OvmfPkg/XenPlatformPei: Setup HyperPages earlier Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 20/35] OvmfPkg/XenPlatformPei: Introduce XenPvhDetected Anthony PERARD
2019-08-15 8:54 ` [edk2-devel] " Laszlo Ersek
2019-08-13 11:31 ` [PATCH v5 21/35] OvmfPkg: Import XENMEM_memory_map hypercall to Xen/memory.h Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 22/35] OvmfPkg/XenPlatformPei: no hvmloader: get the E820 table via hypercall Anthony PERARD
2019-08-15 8:59 ` [edk2-devel] " Laszlo Ersek
2019-08-13 11:31 ` [PATCH v5 23/35] OvmfPkg/XenPlatformPei: Rework memory detection Anthony PERARD
2019-08-15 9:26 ` [edk2-devel] " Laszlo Ersek
2019-08-13 11:31 ` [PATCH v5 24/35] OvmfPkg/XenPlatformPei: Reserve VGA memory region, to boot Linux Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 25/35] OvmfPkg/XenPlatformPei: Ignore missing PCI Host Bridge on Xen PVH Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 26/35] OvmfPkg/XenPlatformLib: Cache result for XenDetected Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 27/35] OvmfPkg/PlatformBootManagerLib: Use XenDetected from XenPlatformLib Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 28/35] OvmfPkg/PlatformBootManagerLib: Handle the absence of PCI bus on Xen PVH Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 29/35] OvmfPkg/OvmfXen: Override PcdFSBClock to Xen vLAPIC timer frequency Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 30/35] OvmfPkg/OvmfXen: Introduce XenTimerDxe Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 31/35] OvmfPkg/PlatformBootManagerLib: Use a Xen console for ConOut/ConIn Anthony PERARD
2019-08-15 9:35 ` [edk2-devel] " Laszlo Ersek
2019-08-13 11:31 ` [PATCH v5 32/35] OvmfPkg: Introduce PcdXenGrantFrames Anthony PERARD
2019-08-15 9:40 ` [edk2-devel] " Laszlo Ersek
2019-08-15 9:45 ` Laszlo Ersek
2019-08-13 11:31 ` [PATCH v5 33/35] OvmfPkg: Introduce XenIoPvhDxe to initialize Grant Tables Anthony PERARD
2019-08-15 9:42 ` [edk2-devel] " Laszlo Ersek
2019-08-13 11:31 ` [PATCH v5 34/35] OvmfPkg: Move XenRealTimeClockLib from ArmVirtPkg Anthony PERARD
2019-08-13 11:31 ` [PATCH v5 35/35] OvmfPkg/OvmfXen: use RealTimeClockRuntimeDxe from EmbeddedPkg Anthony PERARD
2019-08-15 11:03 ` [edk2-devel] [PATCH v5 00/35] Specific platform to run OVMF in Xen PVH and HVM guests Laszlo Ersek
2019-08-21 16:16 ` Laszlo Ersek
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