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* ArmPkg/ArmTrngLib: Remove ASSERTs in ArmTrngLibConstructor()Pierre Gondois2022-11-261-5/+0
| | | | | | | | Remove ASSERTs in ArmTrngLibConstructor() that prevent from booting on DEBUG builds. Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
* ArmPkg/ArmTrngLib: Remove ASSERT in GetArmTrngVersion()Pierre Gondois2022-11-161-1/+0
| | | | | | | | | | | | | | BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4150 GetArmTrngVersion() is used to check the presence of an Arm Trng. If not found, an ASSERT prevents from booting in DEBUG builds. Remove this ASSERT. Reported-by: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg/ArmTrngLib: Fix incorrect GUID reference in DEBUG() outputArd Biesheuvel2022-11-111-1/+1
| | | | | | | | | ArmTrngLib crashes when run in DEBUG mode due to the fact that it passed the [truncated] GUID value to a DEBUG() print statement instead of a pointer to the GUID which is what the %g conversion expects. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg/ArmTrngLib: Add Arm TRNG librarySami Mujawar2022-11-063-0/+467
| | | | | | | | | | | | | | | | | | | | Bugzilla: 3668 (https://bugzilla.tianocore.org/show_bug.cgi?id=3668) The Arm True Random Number Generator Firmware, Interface 1.0, Platform Design Document (https://developer.arm.com/documentation/den0098/latest/) defines an interface between an Operating System (OS) executing at EL1 and Firmware (FW) exposing a conditioned entropy source that is provided by a TRNG back end. The conditioned entropy, that is provided by the Arm TRNG interface, is commonly used to seed deterministic random number generators. This patch adds an ArmTrngLib library that implements the Arm TRNG interface. Acked-by: Leif Lindholm <quic_llindhol@quicinc.com> Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
* ArmPkg/ArmHvcLibNull: Add NULL instance of ArmHvcLibPierre Gondois2022-11-062-0/+51
| | | | | | | Add a Null instance of ArmHvcLib in case of library dependencies. Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com> Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
* ArmPkg/ArmMonitorLib: Add ArmMonitorLibPierre Gondois2022-11-062-0/+63
| | | | | | | | | | The ArmMonitorLib provides an abstract interface to issue an HyperVisor Call (HVC) or System Monitor Call (SMC) depending on the default conduit. The PcdMonitorConduitHvc PCD allows to select the default conduit. Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com> Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
* ArmPkg/ArmMmuLib: Reuse XIP MMU routines when splitting entriesArd Biesheuvel2022-10-194-10/+42
| | | | | | | | | | | | | | In order to reduce the likelihood that we will need to rely on the logic that disables and re-enables the MMU for updating a page table entry safely, expose the XIP version of the helper routine via a HOB and use it instead of the one that is copied into DRAM. Since the XIP copy is already clean to the PoC, and will never end up getting unmapped during a block entry split, we can use it safely without any cache maintenance, and without running the risk of pulling the rug from under our feet when updating an entry by going through an invalid mapping. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Leif Lindholm <quic_llindhol@quicinc.com>
* ArmPkg/ArmMmuLib: permit initial configuration with MMU enabledArd Biesheuvel2022-10-191-22/+26
| | | | | | | | | | | | | | Permit the use of this library with the MMU and caches already enabled. This removes the need for any cache maintenance for coherency, and is generally better for robustness and performance, especially when running under virtualization. Note that this means we have to defer assignment of TTBR0 until the page tables are ready to be used, and so UpdateRegionMapping() can no longer read back TTBR0 directly to discover the root table address. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Leif Lindholm <quic_llindhol@quicinc.com>
* ArmPkg/ArmMmuLib: Disable and re-enable MMU only when neededArd Biesheuvel2022-10-192-26/+119
| | | | | | | | | | | | | When updating a page table descriptor in a way that requires break before make, we temporarily disable the MMU to ensure that we don't unmap the memory region that the code itself is executing from. However, this is a condition we can check in a straight-forward manner, and if the regions are disjoint, we don't have to bother with the MMU controls, and we can just perform an ordinary break before make. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
* ArmPkg/ArmMmuLib: don't replace table entries with block entriesArd Biesheuvel2022-10-191-18/+2
| | | | | | | | | | | | Drop the optimization that replaces table entries with block entries and frees the page tables in the subhierarchy that is being replaced. This rarely occurs in practice anyway, and will require more elaborate TLB maintenance once we switch to a different approach where we no longer disable the MMU and nuke the TLB entirely every time we update a descriptor in a way that requires break-before-make (BBM). Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
* ArmPkg: Remove duplicated wordsPierre Gondois2022-09-051-1/+1
| | | | | | | | | In an effort to clean the documentation of the above package, remove duplicated words, and fix a typo while at it. Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Reviewed-by: Sami Mujawar <sami.muajwar@arm.com> Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
* ArmPkg: Handle warm reboot request correctlyPranav Madhu2022-09-051-2/+19
| | | | | | | | | | The warm reboot requests from OSPM are mapped to cold reboot. To handle the warm reboot separately from a cold reboot, update ArmSmcPsciResetSystemLib and to invoke the PSCI call with parameters for warm reboot. Signed-off-by: Pranav Madhu <pranav.madhu@arm.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
* UefiCpuPkg: Simplify InitializeSeparateExceptionStacksLiu, Zhiguang2022-08-091-6/+9
| | | | | | | | | | | | | | | | Hide the Exception implementation details in CpuExcetionHandlerLib and caller only need to provide buffer Cc: Eric Dong <eric.dong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Cc: Leif Lindholm <quic_llindhol@quicinc.com> Cc: Dandan Bi <dandan.bi@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
* ArmPkg/ArmExceptionLib: Follow new CpuExceptionHandlerLib APIsRay Ni2022-06-141-47/+11
| | | | | | | | | | | | | | | | | CpuExceptionHandlerLib has been refactored with following changes: 1. Removed InitializeCpuInterruptHandlers in 2a09527ebcb459b40 2. Removed InitializeCpuExceptionHandlersEx and added InitializeSeparateExceptionStacks in e7abb94d1fb8a0e7 The patch updates ARM version of CpuExceptionHandlerLib to follow the API changes. The functionality to ARM platforms should be none. Signed-off-by: Ray Ni <ray.ni@intel.com> Cc: Leif Lindholm <quic_llindhol@quicinc.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Remove RVCT supportRebecca Cran2022-05-1324-1446/+0
| | | | | | | | RVCT is obsolete and no longer used. Remove support for it. Signed-off-by: Rebecca Cran <quic_rcran@quicinc.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
* ArmPkg/ArmMmuLib AARCH64: avoid EL0 accessible mappingsArd Biesheuvel2022-02-011-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | We never run any code at EL0, and so it would seem that any access permissions set for EL0 (via the AP[1] attribute in the page tables) are irrelevant. We currently set EL0 and EL1 permissions to the same value arbitrarily. However, this causes problems on hardware like the Apple M1 running the MacOS hypervisor framework, which enters EL1 with SCTLR_EL1.SPAN enabled, causing the Privileged Access Never (PAN) feature to be enabled on any exception taken to EL1, including the IRQ exceptions that handle our timer interrupt. When PAN is enabled, EL1 has no access to any mappings that are also accessible to EL0, causing the firmware to crash if it attempts to access such a mapping. Even though it is debatable whether or not SCTLR_EL1.SPAN should be disabled at entry or whether the firmware should put all UNKNOWN bits in all system registers in a consistent state (which it should), using EL0 permissions serves no purpose whatsoever so let's fix that regardless. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Alexander Graf <agraf@csgraf.de> Acked-by: Leif Lindholm <leif@nuviainc.com>
* ArmPkg: Update SMC calls to use the new ArmCallSmc0/1/2/3 functionsRebecca Cran2021-12-141-8/+2
| | | | | | | | | New SMC helper functions have been added to reduce the amount of template code. Update ArmSmcPsciResetSystemLib and Smbios/ProcessorSubClassDxe to use them. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Add SMC helper functionsRebecca Cran2021-12-143-0/+217
| | | | | | | | | Add functions ArmCallSmc0/1/2/3 to do SMC calls with 0, 1, 2 or 3 arguments. The functions return up to 3 values. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Apply uncrustify changesMichael Kubacki2021-12-0751-2550/+3110
| | | | | | | | | | | | REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the ArmPkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Andrew Fish <afish@apple.com>
* ArmPkg: Change OPTIONAL keyword usage styleMichael D Kinney2021-12-072-3/+2
| | | | | | | | | | | | REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3760 Update all use of ', OPTIONAL' to ' OPTIONAL,' for function params. Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael Kubacki <michael.kubacki@microsoft.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Andrew Fish <afish@apple.com>
* ArmPkg: Change use of EFI_D_* to DEBUG_*Michael D Kinney2021-12-078-68/+67
| | | | | | | | | | | | | REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3739 Update all use of EFI_D_* defines in DEBUG() macros to DEBUG_* defines. Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael Kubacki <michael.kubacki@microsoft.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
* ArmPkg: Implement PlatformBootManagerLib for LinuxBootNhi Pham2021-10-232-0/+244
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | LinuxBoot is a firmware that replaces specific firmware functionality like the UEFI DXE phase with a Linux kernel and runtime. It is built-in UEFI image like an application, which is executed at the end of DXE phase. To achieve the LinuxBoot boot flow "SEC->PEI->DXE->BDS->LinuxBoot", today we use the common well-known GUID of UEFI Shell for LinuxBoot payload, so LinuxBoot developers can effortlessly find the UEFI Shell Application and replace it with the LinuxBoot payload without recompiling platform EDK2 (There might be an issue with a few systems that don't have a UEFI Shell). Also, we have a hard requirement to force the BDS to boot into the LinuxBoot as it is essentially required that only the LinuxBoot boot option is permissible and UEFI is an intermediate bootstrap phase. Considering all the above, it is reasonable to just have a new GUID for LinuxBoot and require a LinuxBoot specific BDS implementation. In addition, with making the BDS implementation simpler, we can reduce many DXE drivers which we think it is not necessary for LinuxBoot booting. This patch adds a new PlatformBootManagerLib implementation which registers only the gArmTokenSpaceGuid.PcdLinuxBootFileGuid for LinuxBoot payload as an active boot option. It allows BDS to jump to the LinuxBoot quickly by skipping the UiApp and UEFI Shell. The PlatformBootManagerLib library derived from ArmPkg/Library/PlatformBootManagerLib. Cc: Leif Lindholm <leif@nuviainc.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Signed-off-by: Nhi Pham <nhi@os.amperecomputing.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com> Acked-by: Moritz Fischer <moritzf@google.com>
* ArmPkg: Enable boot discovery policy for ARM package.Grzegorz Bernacki2021-08-302-1/+122
| | | | | | | | | | | | | This commit adds code which check BootDiscoveryPolicy variable and calls Boot Policy Manager Protocol to connect device specified by the variable. To enable that mechanism for platform EfiMdeModulePkgTokenSpaceGuid.PcdBootDiscoveryPolicy PCD must be added to DSC file and BootDiscoveryPolicyUiLib should be added to UiApp libraries. Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com> Reviewed-by: Sunny Wang <sunny.wang@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: prepare 32bit ARM build of StandaloneMmPkgEtienne Carriere2021-08-112-10/+11
| | | | | | | | | | | | | | Changes in ArmPkg to prepare building StandaloneMm firmware for 32bit Arm architectures. Adds ArmmmuStandaloneMmLib library to the list of the standard components build for ArmPkg on when ARM architectures. Changes path of source file AArch64/ArmMmuStandaloneMmLib.c and compile it for both 32bit and 64bit architectures. Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
* ArmPkg: Move cache defs used in Universal/Smbios into ArmCache.hRebecca Cran2021-06-181-123/+0
| | | | | | | | | | | Many of the cache definitions in ArmLibPrivate.h are being used outside of ArmLib, in Universal/Smbios. Move them into ArmCache.h to make them public, and remove the include of ArmLibPrivate.h from files in Universal/Smbios. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Leif Lindholm <leif@nuviainc.com>
* ArmPkg: Correct small typosPierre Gondois2021-04-283-6/+6
| | | | | | | | | | | | | The 'cspell' CI test detected some small typos in ArmPkg. Correct them. Cc: Bret Barkelew <bret.barkelew@microsoft.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 3002 in StandaloneMmMmuLibPierre Gondois2021-04-281-1/+1
| | | | | | | | | | | | | | This patch fixes the following Ecc reported error: Non-Boolean comparisons should use a compare operator (==, !=, >, < >=, <=) Cc: Bret Barkelew <bret.barkelew@microsoft.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 8003Pierre Gondois2021-04-286-18/+18
| | | | | | | | | | | | | | | | | | This patch fixes the following Ecc reported error: The #ifndef at the start of an include file should have one postfix underscore, and no prefix underscore character Some include guards have been modified to match the name of the header file. Some comments have also been added on the closing '#endif'. Cc: Bret Barkelew <bret.barkelew@microsoft.com> Cc: Sean Brogan <sean.brogan@microsoft.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Sami Mujawar <sami.mujawar@arm.com> Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 8005/8007 in ArmDisassemblerLibPierre Gondois2021-04-152-154/+163
| | | | | | | | | | | | | | | | This patch fixes the following Ecc reported error: 8005: Variable name does not follow the rules: 1. First character should be upper case 2. Must contain lower case characters 3. No white space characters 4. Global variable name must start with a 'g' 8007: There should be no use of short (single character) variable names Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 6001 in ArmSoftFloatLibPierre Gondois2021-04-151-0/+6
| | | | | | | | | This patch fixes the following Ecc reported error: All include file contents should be guarded by a #ifndef statement. Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 5003 in ArmExceptionLibPierre Gondois2021-04-152-3/+6
| | | | | | | | | | | This patch fixes the following Ecc reported error: Function name should be left justified, followed by the beginning of the parameter list, with the closing parenthesis on its own line, indented two spaces Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 10014 in SemihostLibPierre Gondois2021-04-151-1/+2
| | | | | | | | | | | | | | This patch fixes the following Ecc reported error: No used module files found The source files [ArmPkg/Library/SemihostLib/SemihostPrivate.h] is existing in module ArmPkg/Library/SemihostLib/SemihostLib.inf but is not described in the INF file. Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 10016 in StandaloneMmMmuLibPierre Gondois2021-04-151-2/+2
| | | | | | | | | | | | | | | | This patch fixes the following Ecc reported error: Module file has FILE_GUID collision with other module file The two .inf files with clashing GUID are: ArmPkg/Library/ArmMmuLib/ArmMmuBaseLib.inf ArmPkg/Library/StandaloneMmMmuLib/ArmMmuStandaloneMmLib.inf As ArmMmuBaseLib.inf is older than ArmMmuStandaloneMmLib.inf, it has precedence. Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 8001 in ArmArchTimerLibPierre Gondois2021-04-151-6/+6
| | | | | | | | | This patch fixes the following Ecc reported error: Only capital letters are allowed to be used for #define declarations Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 8001 in SemihostLibPierre Gondois2021-04-152-53/+53
| | | | | | | | | This patch fixes the following Ecc reported error: Only capital letters are allowed to be used for #define declarations Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix Ecc error 8001 in ChipsetPierre Gondois2021-04-151-5/+5
| | | | | | | | | | | | | | | | | | | This patch fixes the following Ecc reported error: Only capital letters are allowed to be used for #define declarations Edk2 coding standard stating that: "Names starting with one or two underscores, such as _MACRO_GUARD_FILE_NAME_H_, must not be used." the include guard of ArmCortexA5x.h is also updated. Ref: https://edk2-docs.gitbook.io/edk-ii-c-coding-standards-specification/ 5_source_files/53_include_files# 5-3-5-all-include-file-contents-must-be-protected-by-a-include-guard Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix uninitialised variable in ArmMmuStandaloneMmLibSami Mujawar2021-02-271-144/+179
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following patches added support for StandaloneMM using FF-A: 9da5ee116a28 ArmPkg: Allow FF-A calls to set memory region's attributes 0e43e02b9bd8 ArmPkg: Allow FF-A calls to get memory region's attributes However, in the error handling logic for the Get/Set Memory attributes, the CLANG compiler reports that a status variable could be used without initialisation. This issue is a false positive and is not seen with GCC. The Get/Set Memory attributes operation is atomic and therefore an FFA_INTERRUPT or FFA_SUCCESS response is not expected in response to FFA_MSG_SEND_DIRECT_REQ. So the remaining cases that could occur are: - the target sends FFA_MSG_SEND_DIRECT_RESP with a success or failure code. or - FFA_MSG_SEND_DIRECT_REQ transmission failure. Therefore, - reorder the error handling conditions such that it prevents the uninitialised variable issue being flagged by CLANG. - move the repetitive code to a static helper function and add documentation at the appropriate places. - fix error handling in functions that invoke GetMemoryPermissions(). Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Tested-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Sughosh Ganu <sughosh.ganu@linaro.org>
* ArmPkg: Allow FF-A calls to set memory region's attributesAchin Gupta2021-02-231-23/+65
| | | | | | | | | | Allow setting memory region's permissions using either of the Firmware Framework(FF-A) ABI transport or through the earlier used SVC calls. Signed-off-by: Achin Gupta <achin.gupta@arm.com> Co-developed-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Acked-by: Ard Biesheuvel <ardb@kernel.org>
* ArmPkg: Allow FF-A calls to get memory region's attributesAchin Gupta2021-02-232-6/+75
| | | | | | | | | | Allow getting memory region's permissions using either of the Firmware Framework(FF-A) ABI transport or through the earlier used SVC calls. Signed-off-by: Achin Gupta <achin.gupta@arm.com> Co-developed-by: Sughosh Ganu <sughosh.ganu@linaro.org> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Acked-by: Ard Biesheuvel <ardb@kernel.org>
* ArmPkg: Use FF-A header file in Standalone MM Arm MMU libraryAchin Gupta2021-02-231-0/+1
| | | | | | | | | | Add the FF-A header for invoking the mmu functions using FF-A calls as the transport mechanism. Support for invoking the functions through FF-A will be added in a subsequent patch. Signed-off-by: Achin Gupta <achin.gupta@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Acked-by: Ard Biesheuvel <ardb@kernel.org>
* ArmPkg/ArmSvcLib: Return x4-x7 in output parametersAchin Gupta2021-02-231-1/+3
| | | | | | | | | | | The Arm SMC calling convention standard v1.2 allows 8 input and output parameter registers. The FF-A specification relies on this communication. This patch extends the number of output registers returned by ArmCallSvc() to match this convention. Signed-off-by: Achin Gupta <achin.gupta@arm.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
* ArmPkg: Add helper to read the CCSIDR2 registerRebecca Cran2021-02-083-0/+31
| | | | | | | | Add helper function to read the CCSIDR2 register. This is used when CCIDX is supported in AARCH32 mode. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Reviewed-by: Leif Lindholm <leif@nuviainc.com>
* ArmPkg: Add helper to read CCIDX statusRebecca Cran2021-02-082-2/+36
| | | | | | | | Add a helper function to determine CCIDX support. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Leif Lindholm <leif@nuviainc.com>
* ArmPkg: Update ArmLibPrivate.h with cache register definitionsRebecca Cran2021-02-081-0/+97
| | | | | | | | | Update the cache definitions in ArmLibPrivate.h based on current ARMv8 documentation. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Reviewed-by: Leif Lindholm <leif@nuviainc.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg: Fix the return type of the ReadCCSIDR functionRebecca Cran2021-02-084-4/+11
| | | | | | | | | | | | | When CCIDX is supported, the Current Cache Size ID Register contains data above 32 bits: namely the number of sets. Avoid truncating this by returning a UINTN instead of UINT32. On AARCH32, the expanded number of sets data can be read via the CCSIDR2 register. Also, add Doxygen comments for the function. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Leif Lindholm <leif@nuviainc.com>
* ArmPkg: Add helper function to read the Memory Model Feature Register 4Rebecca Cran2021-02-083-2/+14
| | | | | | | | | In AARCH32, CCIDX support is indicated in the MMFR4 register - unlike under AARCH64 where it's in MMFR2. Add a helper function to read it. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Leif Lindholm <leif@nuviainc.com>
* ArmPkg: Add helper to read the Memory Model Features Register 2Rebecca Cran2021-02-082-0/+14
| | | | | | | | | Add helper function to read the MMFR2 register. We will need this to determine CCIDX support. Signed-off-by: Rebecca Cran <rebecca@nuviainc.com> Reviewed-by: Leif Lindholm <leif@nuviainc.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
* ArmPkg/Library: prevent endless reboot loop with emulated NV varstoreLeif Lindholm2021-02-042-4/+9
| | | | | | | | | | | | | | | | If no valid boot options were found, PlatformBootManagerLib refreshes a set of sane default options and then reboots. However, if there is in fact no persistent varstore, the same thing happens again on next boot, and we end up in an endlessly rebooting loop. So when PcdEmuVariableNvModeEnable is TRUE, skip the reboot step and enter the setup menu instead. Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Leif Lindholm <leif@nuviainc.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
* ArmPkg: Fix Ecc error 5007 in DefaultExceptionHandlerLibPierre Gondois2021-01-061-19/+22
| | | | | | | | | | | | This patch fixes the following Ecc reported error: There should be no initialization of a variable as part of its declaration Fixing this error implies extracting the CpsrChar array from CpsrString and making it a static variable. Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
* ArmPkg: Fix Ecc error 5007 in StandaloneMmMmuLibPierre Gondois2021-01-061-5/+8
| | | | | | | | | This patch fixes the following Ecc reported error: There should be no initialization of a variable as part of its declaration Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
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