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ArmPkg: Introduce support for PcdFfaEnable 

The Secure Partition(SP) can request services from the Secure
Partition Manager Core(SPMC) either through FF-A calls or through the
existing SVC calls. Add a feature flag Pcd for enabling the FF-A
method -- when this is set to FALSE, the SP uses the existing SVC
calls for making the requests.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Sughosh Ganu 2021-02-19 12:05:57 +05:30 committed by mergify[bot]
parent 82abb8f981
commit ee283e3395
1 changed files with 7 additions and 0 deletions
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7
ArmPkg/ArmPkg.dec
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@ -84,6 +84,13 @@
# hardware coherency (i.e., no virtualization or cache coherent DMA)
gArmTokenSpaceGuid.PcdNormalMemoryNonshareableOverride|FALSE|BOOLEAN|0x00000043
[PcdsFeatureFlag.AARCH64]
## Used to select method for requesting services from S-EL1.<BR><BR>
# TRUE - Selects FF-A calls for communication between S-EL0 and SPMC.<BR>
# FALSE - Selects SVC calls for communication between S-EL0 and SPMC.<BR>
# @Prompt Enable FF-A support.
gArmTokenSpaceGuid.PcdFfaEnable|FALSE|BOOLEAN|0x0000005B
[PcdsFixedAtBuild.common]
gArmTokenSpaceGuid.PcdTrustzoneSupport|FALSE|BOOLEAN|0x00000006