.../LoongArchQemuPkg/PlatformPei/MemDetect.c | 13 +++++++++++++ .../LoongArchQemuPkg/PlatformPei/PlatformPei.inf | 1 + 2 files changed, 14 insertions(+)
When 0 address protection is enabled,
0-4k memory needs to be preallocated to
prevent UEFI applications from allocating use,
such as grub.
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Chao Li <lichao@loongson.cn>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: xianglai li <lixianglai@loongson.cn>
---
.../LoongArchQemuPkg/PlatformPei/MemDetect.c | 13 +++++++++++++
.../LoongArchQemuPkg/PlatformPei/PlatformPei.inf | 1 +
2 files changed, 14 insertions(+)
diff --git a/Platform/Loongson/LoongArchQemuPkg/PlatformPei/MemDetect.c b/Platform/Loongson/LoongArchQemuPkg/PlatformPei/MemDetect.c
index fad4cff8d8..7e6a4a3aa9 100644
--- a/Platform/Loongson/LoongArchQemuPkg/PlatformPei/MemDetect.c
+++ b/Platform/Loongson/LoongArchQemuPkg/PlatformPei/MemDetect.c
@@ -101,4 +101,17 @@ InitializeRamRegions (
AddMemoryRangeHob ( pEntry->BaseAddr, pEntry->BaseAddr + pEntry->Length);
}
+
+ //
+ //When 0 address protection is enabled,
+ //0-4k memory needs to be preallocated to prevent UEFI applications from allocating use,
+ //such as grub
+ //
+ if (PcdGet8 (PcdNullPointerDetectionPropertyMask) & BIT0) {
+ BuildMemoryAllocationHob (
+ 0,
+ EFI_PAGE_SIZE,
+ EfiBootServicesData
+ );
+ }
}
diff --git a/Platform/Loongson/LoongArchQemuPkg/PlatformPei/PlatformPei.inf b/Platform/Loongson/LoongArchQemuPkg/PlatformPei/PlatformPei.inf
index 268efac585..6cc3513b63 100644
--- a/Platform/Loongson/LoongArchQemuPkg/PlatformPei/PlatformPei.inf
+++ b/Platform/Loongson/LoongArchQemuPkg/PlatformPei/PlatformPei.inf
@@ -59,6 +59,7 @@
gLoongArchQemuPkgTokenSpaceGuid.PcdDeviceTreeBase
gLoongArchQemuPkgTokenSpaceGuid.PcdDeviceTreePadding
gLoongArchQemuPkgTokenSpaceGuid.PcdRtcBaseAddress
+ gEfiMdeModulePkgTokenSpaceGuid.PcdNullPointerDetectionPropertyMask
[FixedPcd]
gLoongArchQemuPkgTokenSpaceGuid.PcdFlashDxeFvBase
--
2.39.1
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Reviewed-by: Chao Li <lichao@loongson.cn> Thanks, Chao 在 2023/6/1 19:19, xianglai 写道: > When 0 address protection is enabled, > 0-4k memory needs to be preallocated to > prevent UEFI applications from allocating use, > such as grub. > > Cc: Ard Biesheuvel<ardb+tianocore@kernel.org> > Cc: Bibo Mao<maobibo@loongson.cn> > Cc: Chao Li<lichao@loongson.cn> > Cc: Leif Lindholm<quic_llindhol@quicinc.com> > Cc: Liming Gao<gaoliming@byosoft.com.cn> > Cc: Michael D Kinney<michael.d.kinney@intel.com> > Signed-off-by: xianglai li<lixianglai@loongson.cn> > --- > .../LoongArchQemuPkg/PlatformPei/MemDetect.c | 13 +++++++++++++ > .../LoongArchQemuPkg/PlatformPei/PlatformPei.inf | 1 + > 2 files changed, 14 insertions(+) > > diff --git a/Platform/Loongson/LoongArchQemuPkg/PlatformPei/MemDetect.c b/Platform/Loongson/LoongArchQemuPkg/PlatformPei/MemDetect.c > index fad4cff8d8..7e6a4a3aa9 100644 > --- a/Platform/Loongson/LoongArchQemuPkg/PlatformPei/MemDetect.c > +++ b/Platform/Loongson/LoongArchQemuPkg/PlatformPei/MemDetect.c > @@ -101,4 +101,17 @@ InitializeRamRegions ( > > AddMemoryRangeHob ( pEntry->BaseAddr, pEntry->BaseAddr + pEntry->Length); > } > + > + // > + //When 0 address protection is enabled, > + //0-4k memory needs to be preallocated to prevent UEFI applications from allocating use, > + //such as grub > + // > + if (PcdGet8 (PcdNullPointerDetectionPropertyMask) & BIT0) { > + BuildMemoryAllocationHob ( > + 0, > + EFI_PAGE_SIZE, > + EfiBootServicesData > + ); > + } > } > diff --git a/Platform/Loongson/LoongArchQemuPkg/PlatformPei/PlatformPei.inf b/Platform/Loongson/LoongArchQemuPkg/PlatformPei/PlatformPei.inf > index 268efac585..6cc3513b63 100644 > --- a/Platform/Loongson/LoongArchQemuPkg/PlatformPei/PlatformPei.inf > +++ b/Platform/Loongson/LoongArchQemuPkg/PlatformPei/PlatformPei.inf > @@ -59,6 +59,7 @@ > gLoongArchQemuPkgTokenSpaceGuid.PcdDeviceTreeBase > gLoongArchQemuPkgTokenSpaceGuid.PcdDeviceTreePadding > gLoongArchQemuPkgTokenSpaceGuid.PcdRtcBaseAddress > + gEfiMdeModulePkgTokenSpaceGuid.PcdNullPointerDetectionPropertyMask > > [FixedPcd] > gLoongArchQemuPkgTokenSpaceGuid.PcdFlashDxeFvBase -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#105748): https://edk2.groups.io/g/devel/message/105748 Mute This Topic: https://groups.io/mt/99261444/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
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