3b96221f77
Introduce XenPlatformPei, a copy of OvmfPkg/PlatformPei without some
of QEMU specific initialization, Xen does not support QemuFwCfg.
This new module will be adjusted to accommodate Xen PVH.
fw_cfg dependents that have been removed, which are dynamically skipped
when running PlatformPei on Xen:
- GetFirstNonAddress(): controlling the 64-bit PCI MMIO aperture via the
(experimental) "opt/ovmf/X-PciMmio64Mb" file
- GetFirstNonAddress(): honoring the hotplug DIMM area
("etc/reserved-memory-end") in the placement of the 64-bit PCI MMIO
aperture
- NoexecDxeInitialization() is removed, so PcdPropertiesTableEnable and
PcdSetNxForStack are left constant FALSE (not set dynamically from
fw_cfg "opt/ovmf/PcdXxxx")
- MaxCpuCountInitialization(), PublishPeiMemory(): the max CPU count is
not taken from the QemuFwCfgItemSmpCpuCount fw_cfg key;
PcdCpuMaxLogicalProcessorNumber is used intact and
PcdCpuApInitTimeOutInMicroSeconds is never changed or used.
- InitializeXenPlatform(), S3Verification(): S3 is assumed disabled (not
consulting "etc/system-states" via QemuFwCfgS3Enabled()).
- InstallFeatureControlCallback(): the feature control MSR is not set
from "etc/msr_feature_control"
(also removed FeatureControl.c as there is nothing been executed)
Also removed:
- SMRAM/TSEG-related low mem size adjusting (PcdSmmSmramRequire is
assumed FALSE) in PublishPeiMemory(),
- QemuInitializeRam() entirely,
Xen related changes:
- Have removed the module variable mXen, as it should be always true.
- Have the platform PEI initialization fails if Xen has not been
detected.
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1689
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20190813113119.14804-5-anthony.perard@citrix.com>
40 lines
969 B
C
40 lines
969 B
C
/** @file
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Ovmf info structure passed by Xen
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Copyright (c) 2013, Citrix Systems UK Ltd.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __XEN_H__
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#define __XEN_H__
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#include <PiPei.h>
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// Physical address of OVMF info
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#define OVMF_INFO_PHYSICAL_ADDRESS 0x00001000
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// This structure must match the definition on Xen side
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#pragma pack(1)
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typedef struct {
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CHAR8 Signature[14]; // XenHVMOVMF\0
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UINT8 Length; // Length of this structure
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UINT8 Checksum; // Set such that the sum over bytes 0..length == 0
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//
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// Physical address of an array of TablesCount elements.
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//
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// Each element contains the physical address of a BIOS table.
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//
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EFI_PHYSICAL_ADDRESS Tables;
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UINT32 TablesCount;
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//
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// Physical address of the E820 table, contains E820EntriesCount entries.
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//
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EFI_PHYSICAL_ADDRESS E820;
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UINT32 E820EntriesCount;
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} EFI_XEN_OVMF_INFO;
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#pragma pack()
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#endif /* __XEN_H__ */
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