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2023-06-27ArmPkg/OpteeLib: Map shared communication buffer non-executableArd Biesheuvel1-1/+6
The OP-TEE secure OS exposes a non-secure memory region for communication between the secure OS itself and any clients in the non-secure firmware. This memory is writable by non-secure and is not used for code only data, and so it should be mapped non-executable. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
2023-06-26ArmPkg/ArmMmuLib: Extend API to manage memory permissions betterArd Biesheuvel1-1/+1
Currently, ArmSetMemoryAttributes () takes a combination of EFI_MEMORY_xx constants describing the memory type and permission attributes that should be set on a region of memory. In cases where the memory type is omitted, we assume that the memory permissions being set are final, and that existing memory permissions can be discarded. This is problematic, because we aim to map memory non-executable (EFI_MEMORY_XP) by default, and only relax this requirement for code regions that are mapped read-only (EFI_MEMORY_RO). Currently, setting one permission clears the other, and so code managing these permissions has to be aware of the existing permissions in order to be able to preserve them, and this is not always tractable (e.g., the UEFI memory attribute protocol implements an abstraction that promises to preserve memory permissions that it is not operating on explicitly). So let's add an AttributeMask parameter to ArmSetMemoryAttributes(), which is permitted to be non-zero if no memory type is being provided, in which case only memory permission attributes covered in the mask will be affected by the update. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Oliver Smith-Denny <osde@linux.microsoft.com> Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>
2021-12-07ArmPkg: Apply uncrustify changesMichael Kubacki2-149/+151
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>
2021-04-28ArmPkg: Fix Ecc error 8003Pierre Gondois1-3/+3
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>
2021-01-06ArmPkg: Fix Ecc error 3002 in OpteeLibPierre Gondois1-3/+4
This patch fixes the following Ecc reported error: Non-Boolean comparisons should use a compare operator (==, !=, >, < >=, <=) Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
2019-04-09ArmPkg: Replace BSD License with BSD+Patent LicenseMichael D Kinney3-20/+3
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2018-12-06ArmPkg/OpteeLib: Add dummy RPC handlerSumit Garg2-7/+30
Add dummy RPC handler for RPCs that are not implemented as control should be returned back to OP-TEE in case any RPC is invoked. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2018-11-05ArmPkg/OpteeLib: Fix compilation issues for ARM (32-bit)Sumit Garg1-7/+7
Correct usage of EFI_PHYSICAL_ADDRESS (always 64-bit) vs. pointers (depending on architecture). Reported-by: Leif Lindholm <leif.lindholm@linaro.org> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2018-10-30ArmPkg/OpteeLib: Add APIs to communicate with OP-TEESumit Garg3-0/+447
Add following APIs to communicate with OP-TEE pseudo/early TAs: 1. OpteeInit 2. OpteeOpenSession 3. OpteeCloseSession 4. OpteeInvokeFunc Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Leif Lindholm <leif.lindholm@linaro.org> Cc: Michael D Kinney <michael.d.kinney@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2018-08-01ArmPkg: Add initial OpteeLib implementationSumit Garg2-0/+79
This is initial version of OP-TEE library that provides api's to communicate with OP-TEE OS (Trusted OS based on ARM TrustZone) via secure monitor calls. Currently it provides basic api to detect OP-TEE presence via UID matching. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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