[edk2-devel] [PATCH v4 04/14] ArmPkg: Introduce support for PcdFfaEnable
Sughosh Ganu
sughosh.ganu at linaro.org
Wed Feb 17 11:27:07 UTC 2021
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 at linaro.org>
---
Changes since V3:
* Put the PcdFfaEnable under the PcdsFeatureFlag.AARCH64 section to
avoid build breakage for the X64 StandaloneMm builds.
ArmPkg/ArmPkg.dec | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/ArmPkg/ArmPkg.dec b/ArmPkg/ArmPkg.dec
index f0b136a57a..a8a22c649f 100644
--- a/ArmPkg/ArmPkg.dec
+++ b/ArmPkg/ArmPkg.dec
@@ -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
--
2.17.1
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