On 11/17/17 17:09, Ard Biesheuvel wrote: > Clone the existing ArmPlatformGetVirtualMemoryMap () for this platform, > clean it up slightly (by using a static buffer rather than a heap > allocation, and removing the support for uncached DRAM mappings), and > turn it into a new ArmVirtMemInfoLib implementation. > > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> > --- > ArmVirtPkg/ArmVirtXen.dsc | 1 + > ArmVirtPkg/Library/XenVirtMemInfoLib/AArch64/PhysAddrTop.S | 39 +++++++++++++ > ArmVirtPkg/Library/XenVirtMemInfoLib/Arm/PhysAddrTop.S | 24 ++++++++ > ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c | 61 > ++++++++++++++++++++ > ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf | 41 +++++++++++++ > 5 files changed, 166 insertions(+)
Based on the diffstat, I'm happy to ACK this quickly: Acked-by: Laszlo Ersek <ler...@redhat.com> I'm adding Julien to the CC list (see commit f724f9d9c72a, "Maintainers.txt: add Xen reviewer for ArmVirtPkg", 2017-09-22), in case he wants to comment. Thanks Laszlo > > diff --git a/ArmVirtPkg/ArmVirtXen.dsc b/ArmVirtPkg/ArmVirtXen.dsc > index 7a443483d1ac..3df684d13cb0 100644 > --- a/ArmVirtPkg/ArmVirtXen.dsc > +++ b/ArmVirtPkg/ArmVirtXen.dsc > @@ -44,6 +44,7 @@ [LibraryClasses] > > VirtioMmioDeviceLib|OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceLib.inf > > > ArmPlatformLib|ArmVirtPkg/Library/ArmXenRelocatablePlatformLib/ArmXenRelocatablePlatformLib.inf > + > ArmVirtMemInfoLib|ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf > > TimerLib|ArmPkg/Library/ArmArchTimerLib/ArmArchTimerLib.inf > > diff --git a/ArmVirtPkg/Library/XenVirtMemInfoLib/AArch64/PhysAddrTop.S > b/ArmVirtPkg/Library/XenVirtMemInfoLib/AArch64/PhysAddrTop.S > new file mode 100644 > index 000000000000..a1f6a194d59b > --- /dev/null > +++ b/ArmVirtPkg/Library/XenVirtMemInfoLib/AArch64/PhysAddrTop.S > @@ -0,0 +1,39 @@ > +# > +# Copyright (c) 2011-2013, ARM Limited. All rights reserved. > +# Copyright (c) 2016-2017, Linaro Limited. All rights reserved. > +# > +# This program and the accompanying materials > +# are licensed and made available under the terms and conditions of the BSD > License > +# which accompanies this distribution. The full text of the license may be > found at > +# http://opensource.org/licenses/bsd-license.php > +# > +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR > IMPLIED. > +# > +# > + > +#include <AsmMacroIoLibV8.h> > + > +//EFI_PHYSICAL_ADDRESS > +//GetPhysAddrTop ( > +// VOID > +// ); > +ASM_FUNC(ArmGetPhysAddrTop) > + mrs x0, id_aa64mmfr0_el1 > + adr x1, .LPARanges > + and x0, x0, #7 > + ldrb w1, [x1, x0] > + mov x0, #1 > + lsl x0, x0, x1 > + ret > + > +// > +// Bits 0..2 of the AA64MFR0_EL1 system register encode the size of the > +// physical address space support on this CPU: > +// 0 == 32 bits, 1 == 36 bits, etc etc > +// 6 and 7 are reserved > +// > +.LPARanges: > + .byte 32, 36, 40, 42, 44, 48, -1, -1 > + > +ASM_FUNCTION_REMOVE_IF_UNREFERENCED > diff --git a/ArmVirtPkg/Library/XenVirtMemInfoLib/Arm/PhysAddrTop.S > b/ArmVirtPkg/Library/XenVirtMemInfoLib/Arm/PhysAddrTop.S > new file mode 100644 > index 000000000000..9cd81529fb3d > --- /dev/null > +++ b/ArmVirtPkg/Library/XenVirtMemInfoLib/Arm/PhysAddrTop.S > @@ -0,0 +1,24 @@ > +# > +# Copyright (c) 2011-2013, ARM Limited. All rights reserved. > +# Copyright (c) 2014-2017, Linaro Limited. All rights reserved. > +# > +# This program and the accompanying materials > +# are licensed and made available under the terms and conditions of the BSD > License > +# which accompanies this distribution. The full text of the license may be > found at > +# http://opensource.org/licenses/bsd-license.php > +# > +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR > IMPLIED. > +# > +# > + > +#include <AsmMacroIoLib.h> > + > +//EFI_PHYSICAL_ADDRESS > +//GetPhysAddrTop ( > +// VOID > +// ); > +ASM_FUNC(ArmGetPhysAddrTop) > + mov r0, #0x00000000 > + mov r1, #0x10000 > + bx lr > diff --git a/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c > b/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c > new file mode 100644 > index 000000000000..cc806b474560 > --- /dev/null > +++ b/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c > @@ -0,0 +1,61 @@ > +/** @file > + > + Copyright (c) 2014-2017, Linaro Limited. All rights reserved. > + > + This program and the accompanying materials are licensed and made available > + under the terms and conditions of the BSD License which accompanies this > + distribution. The full text of the license may be found at > + http://opensource.org/licenses/bsd-license.php > + > + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR > IMPLIED. > + > +**/ > + > +#include <Base.h> > +#include <Library/ArmLib.h> > +#include <Library/DebugLib.h> > + > +STATIC ARM_MEMORY_REGION_DESCRIPTOR mVirtualMemoryTable[2]; > + > +EFI_PHYSICAL_ADDRESS > +ArmGetPhysAddrTop ( > + VOID > + ); > + > +/** > + Return the Virtual Memory Map of your platform > + > + This Virtual Memory Map is used by MemoryInitPei Module to initialize the > MMU > + on your platform. > + > + @param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR > + describing a Physical-to-Virtual Memory > + mapping. This array must be ended by a > + zero-filled entry > + > +**/ > +VOID > +ArmVirtGetMemoryMap ( > + OUT ARM_MEMORY_REGION_DESCRIPTOR **VirtualMemoryMap > + ) > +{ > + ASSERT (VirtualMemoryMap != NULL); > + > + // > + // Map the entire physical memory space as cached. The only device > + // we care about is the GIC, which will be stage 2 mapped as a device > + // by the hypervisor, overriding the cached mapping we install here. > + // > + mVirtualMemoryTable[0].PhysicalBase = 0x0; > + mVirtualMemoryTable[0].VirtualBase = 0x0; > + mVirtualMemoryTable[0].Length = ArmGetPhysAddrTop (); > + mVirtualMemoryTable[0].Attributes = > ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK; > + > + mVirtualMemoryTable[1].PhysicalBase = 0x0; > + mVirtualMemoryTable[1].VirtualBase = 0x0; > + mVirtualMemoryTable[1].Length = 0x0; > + mVirtualMemoryTable[1].Attributes = 0x0; > + > + *VirtualMemoryMap = mVirtualMemoryTable; > +} > diff --git a/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf > b/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf > new file mode 100644 > index 000000000000..cd4c805a4db9 > --- /dev/null > +++ b/ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.inf > @@ -0,0 +1,41 @@ > +#/* @file > +# > +# Copyright (c) 2011-2015, ARM Limited. All rights reserved. > +# Copyright (c) 2014-2017, Linaro Limited. All rights reserved. > +# > +# This program and the accompanying materials are licensed and made > available > +# under the terms and conditions of the BSD License which accompanies this > +# distribution. The full text of the license may be found at > +# http://opensource.org/licenses/bsd-license.php > +# > +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, > +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR > IMPLIED. > +# > +#*/ > + > +[Defines] > + INF_VERSION = 0x0001001A > + BASE_NAME = XenVirtMemInfoLib > + FILE_GUID = 40d1f8f5-4dfe-4e0f-9a15-b1de9dc9f4ed > + MODULE_TYPE = BASE > + VERSION_STRING = 1.0 > + LIBRARY_CLASS = ArmVirtMemInfoLib > + > +[Sources] > + XenVirtMemInfoLib.c > + > +[Sources.ARM] > + Arm/PhysAddrTop.S > + > +[Sources.AARCH64] > + AArch64/PhysAddrTop.S > + > +[Packages] > + ArmPkg/ArmPkg.dec > + ArmVirtPkg/ArmVirtPkg.dec > + MdeModulePkg/MdeModulePkg.dec > + MdePkg/MdePkg.dec > + > +[LibraryClasses] > + ArmLib > + DebugLib > _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
