From: "Bret Barkelew" <bret@corthon.com>
To: devel@edk2.groups.io
Cc: Leif Lindholm <leif@nuviainc.com>,
Ard Biesheuvel <ardb+tianocore@kernel.org>,
Sean Brogan <sean.brogan@microsoft.com>
Subject: [PATCH v1 11/16] ArmPkg: Add Basic MMU Lib for Arm silicon
Date: Mon, 1 Nov 2021 12:56:43 -0700 [thread overview]
Message-ID: <20211101195648.6420-12-brbarkel@microsoft.com> (raw)
In-Reply-To: <20211101195648.6420-1-brbarkel@microsoft.com>
From: Sean Brogan <sean.brogan@microsoft.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3651
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sean Brogan <sean.brogan@microsoft.com>
Signed-off-by: Bret Barkelew <bret.barkelew@microsoft.com>
---
ArmPkg/Library/MmuLib/MmuLib.c | 120 ++++++++++++++++++++
ArmPkg/ArmPkg.dsc | 1 +
ArmPkg/Library/MmuLib/BaseMmuLib.inf | 30 +++++
3 files changed, 151 insertions(+)
diff --git a/ArmPkg/Library/MmuLib/MmuLib.c b/ArmPkg/Library/MmuLib/MmuLib.c
new file mode 100644
index 000000000000..7a6ba1f81819
--- /dev/null
+++ b/ArmPkg/Library/MmuLib/MmuLib.c
@@ -0,0 +1,120 @@
+/** @file
+This library instance implements a very limited MMU Lib instance
+for the ARM/AARCH64 architectures. This library shims a common library
+interface to the ArmPkg defined ArmMmuLib.ib.
+
+Copyright (c) Microsoft Corporation.
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/MmuLib.h>
+#include <Library/ArmMmuLib.h>
+#include <Library/DebugLib.h>
+
+/**
+ Bitwise sets the memory attributes on a range of memory based on an attributes mask.
+
+ @param BaseAddress The start of the range for which to set attributes.
+ @param Length The length of the range.
+ @param Attributes A bitmask of the attributes to set. See "Physical memory
+ protection attributes" in UefiSpec.h
+
+ @return EFI_SUCCESS
+ @return Others
+
+**/
+EFI_STATUS
+EFIAPI
+MmuSetAttributes (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 Attributes
+ )
+ {
+ EFI_STATUS Status;
+
+ Status = EFI_UNSUPPORTED;
+
+ if (Attributes & EFI_MEMORY_XP) {
+ Status = ArmSetMemoryRegionNoExec (BaseAddress, Length);
+ if (EFI_ERROR(Status)) {
+ DEBUG((DEBUG_ERROR, "%a - Failed to set NX. Status = %r\n", __FUNCTION__, Status));
+ }
+ }
+
+ ASSERT_EFI_ERROR(Status);
+ return Status;
+ }
+
+
+/**
+ Bitwise clears the memory attributes on a range of memory based on an attributes mask.
+
+ @param BaseAddress The start of the range for which to clear attributes.
+ @param Length The length of the range.
+ @param Attributes A bitmask of the attributes to clear. See "Physical memory
+ protection attributes" in UefiSpec.h
+
+ @return EFI_SUCCESS
+ @return Others
+
+**/
+EFI_STATUS
+EFIAPI
+MmuClearAttributes (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length,
+ IN UINT64 Attributes
+ )
+ {
+ EFI_STATUS Status;
+
+ Status = EFI_UNSUPPORTED;
+
+ if (Attributes & EFI_MEMORY_XP) {
+ Status = ArmClearMemoryRegionNoExec (BaseAddress, Length);
+ if (EFI_ERROR(Status)) {
+ DEBUG((DEBUG_ERROR, "%a - Failed to clear NX. Status = %r\n", __FUNCTION__, Status));
+ }
+ }
+
+ if (Attributes & EFI_MEMORY_RO) {
+ Status = ArmClearMemoryRegionReadOnly(BaseAddress, Length);
+ if (EFI_ERROR(Status)) {
+ DEBUG((DEBUG_ERROR, "%a - Failed to clear RO. Status = %r\n", __FUNCTION__, Status));
+ }
+ }
+
+ ASSERT_EFI_ERROR(Status);
+ return Status;
+ }
+
+
+/**
+ Returns the memory attributes on a range of memory.
+
+ @param BaseAddress The start of the range for which to set attributes.
+ @param Attributes A return pointer for the attributes.
+
+ @return EFI_SUCCESS
+ @return EFI_INVALID_PARAMETER A return pointer is NULL.
+ @return Others
+
+**/
+EFI_STATUS
+EFIAPI
+MmuGetAttributes (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ OUT UINT64 *Attributes
+ )
+ {
+ EFI_STATUS Status;
+
+ Status = EFI_UNSUPPORTED;
+
+ DEBUG ((DEBUG_ERROR, "%a() API not implemented\n", __FUNCTION__));
+
+ ASSERT_EFI_ERROR(Status);
+ return Status;
+ }
diff --git a/ArmPkg/ArmPkg.dsc b/ArmPkg/ArmPkg.dsc
index 06ede068f99d..cbc67daa7696 100644
--- a/ArmPkg/ArmPkg.dsc
+++ b/ArmPkg/ArmPkg.dsc
@@ -165,3 +165,4 @@ [Components.AARCH64]
[Components.AARCH64, Components.ARM]
ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf
+ ArmPkg/Library/MmuLib/BaseMmuLib.inf
diff --git a/ArmPkg/Library/MmuLib/BaseMmuLib.inf b/ArmPkg/Library/MmuLib/BaseMmuLib.inf
new file mode 100644
index 000000000000..15095abee9c3
--- /dev/null
+++ b/ArmPkg/Library/MmuLib/BaseMmuLib.inf
@@ -0,0 +1,30 @@
+## @file
+# This library instance implements a very limited MMU Lib instance
+# for the ARM/AARCH64 architectures. This library shims a common library
+# interface to the ArmPkg defined ArmMmuLib.
+#
+# Copyright (c) Microsoft Corporation.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = MmuLib
+ FILE_GUID = 6f2ee9a4-79b3-4b77-9a47-e2bd4b917b75
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = MmuLib
+
+[Sources]
+ MmuLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ ArmPkg/ArmPkg.dec
+
+[LibraryClasses]
+ DebugLib
+ ArmMmuLib
--
2.31.1.windows.1
next prev parent reply other threads:[~2021-11-01 19:58 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-01 19:56 [PATCH v1 00/16] Un-siloing Arm common code Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 01/16] ArmPkg/ArmMmuBaseLib: Disallow STANDALONE_MM Bret Barkelew
2021-11-02 8:43 ` Leif Lindholm
2021-11-02 8:50 ` [edk2-devel] " ryan.harkin
2021-11-02 9:03 ` Leif Lindholm
2021-11-02 9:26 ` Leif Lindholm
2021-11-01 19:56 ` [PATCH v1 02/16] ArmPkg/ArmMmuStandaloneMmLib: Update to match ArmMmuLib Bret Barkelew
2021-11-02 9:34 ` Leif Lindholm
2021-11-02 9:39 ` Leif Lindholm
2021-11-01 19:56 ` [PATCH v1 03/16] ArmPkg/StandaloneMmCoreEntryPoint: Swap to ArmMmuLib Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 04/16] ArmPkg: Disavow StandaloneMmMmuLib. It's just ArmMmuLib Bret Barkelew
2021-11-02 9:39 ` Leif Lindholm
2021-11-01 19:56 ` [PATCH v1 05/16] ArmPkg and MdePkg: Move the Arm CompilerIntrinsicsLib to MdePkg Bret Barkelew
2021-11-02 9:50 ` Leif Lindholm
2021-11-02 19:44 ` [EXTERNAL] Re: [edk2-devel] " Bret Barkelew
2021-11-04 6:23 ` 回复: " gaoliming
2021-11-04 6:24 ` Andrew Fish
2021-11-04 17:23 ` Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 06/16] ArmPkg and BaseTools: Move the GccLto binaries from ArmPkg to BaseTools Bret Barkelew
2021-11-02 9:55 ` Leif Lindholm
2021-11-02 19:45 ` [EXTERNAL] Re: [edk2-devel] " Bret Barkelew
2021-11-02 23:34 ` [EXTERNAL] " Andrew Fish
2021-11-03 11:03 ` Leif Lindholm
2021-11-03 15:35 ` Bob Feng
2021-11-03 16:08 ` Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 07/16] ArmPkg and MdePkg: Move the AsmMacroIoLib from ArmPkg to MdePkg Bret Barkelew
2021-11-02 1:52 ` 回复: " gaoliming
2021-11-02 9:24 ` Leif Lindholm
2021-11-02 19:48 ` Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 08/16] MdePkg: Create the MMU access lib to abstract memory protection settings Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 09/16] MdeModulePkg: Swap to MmuLib instead of Arm-specific lib Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 10/16] StandaloneMmPkg: Switch to the MmuLib abstraction Bret Barkelew
2021-11-02 0:25 ` [edk2-devel] " Yao, Jiewen
2021-11-01 19:56 ` Bret Barkelew [this message]
2021-11-02 9:57 ` [PATCH v1 11/16] ArmPkg: Add Basic MMU Lib for Arm silicon Leif Lindholm
2021-11-02 19:51 ` Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 12/16] ArmPkg: Move the StandaloneMmCpu driver to ArmPkg Bret Barkelew
2021-11-02 10:00 ` Leif Lindholm
2021-11-02 19:53 ` Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 13/16] ArmPkg: Move the StandaloneMmCoreEntryPoint lib " Bret Barkelew
2021-11-02 10:00 ` Leif Lindholm
2021-11-01 19:56 ` [PATCH v1 14/16] ArmPkg/Library: Convert StandaloneMmCoreEntryPoint to Arm-only Bret Barkelew
2021-11-02 10:05 ` Leif Lindholm
2021-11-01 19:56 ` [PATCH v1 15/16] ArmPkg/ArmPkg.dsc: Resolve build errors resulting from package moves Bret Barkelew
2021-11-01 19:56 ` [PATCH v1 16/16] ArmPlatformPkg/ArmPlatformPkg.dsc: " Bret Barkelew
2021-11-02 0:26 ` [edk2-devel] [PATCH v1 00/16] Un-siloing Arm common code Yao, Jiewen
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