Qemu has versioning for sbsa-ref platform. TF-A reads data from provided
DeviceTree and provides as SMC.
This change adds reading GIC base addresses into EDK2.
Signed-off-by: Marcin Juszkiewicz <marcin.juszkiew...@linaro.org>
---
.../SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.c | 30 +++++++++++++++++++
.../SbsaQemuPlatformDxe.inf | 4 +++
2 files changed, 34 insertions(+)
diff --git
a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.c
b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.c
index 199766c7014a..1213268519c8 100644
--- a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.c
+++ b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.c
@@ -25,6 +25,8 @@
#define SIP_FUNCTION_ID(n) (SIP_FUNCTION | (n))
#define SIP_SVC_VERSION SIP_FUNCTION_ID(1)
+#define SIP_SVC_GET_GICD SIP_FUNCTION_ID(2)
+#define SIP_SVC_GET_GICR SIP_FUNCTION_ID(3)
EFI_STATUS
EFIAPI
@@ -78,5 +80,33 @@ InitializeSbsaQemuPlatformDxe (
DEBUG ((DEBUG_INFO, "Platform version: %d.%d\n", Arg0, Arg1));
+ /* If we are on platform version 0.0 then there is no more data for us in
DeviceTree */
+ if ((Arg0 == 0) & (Arg1 == 0))
+ {
+ return EFI_SUCCESS;
+ }
+
+ Result = ArmCallSmc0 (SIP_SVC_GET_GICD, &Arg0, NULL, NULL);
+ if (Result == SMC_ARCH_CALL_SUCCESS)
+ {
+ Result = PcdSet64S (PcdGicDistributorBase, Arg0);
+ ASSERT_EFI_ERROR (Result);
+ }
+
+ Arg0 = PcdGet64 (PcdGicDistributorBase);
+
+ DEBUG ((DEBUG_INFO, "GICD base: 0x%x\n", Arg0));
+
+ Result = ArmCallSmc0 (SIP_SVC_GET_GICR, &Arg0, NULL, NULL);
+ if (Result == SMC_ARCH_CALL_SUCCESS)
+ {
+ Result = PcdSet64S (PcdGicRedistributorsBase, Arg0);
+ ASSERT_EFI_ERROR (Result);
+ }
+
+ Arg0 = PcdGet64 (PcdGicRedistributorsBase);
+
+ DEBUG ((DEBUG_INFO, "GICR base: 0x%x\n", Arg0));
+
return EFI_SUCCESS;
}
diff --git
a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.inf
b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.inf
index 1f2c8a9dd6af..545794a8c7ff 100644
--- a/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.inf
+++ b/Silicon/Qemu/SbsaQemu/Drivers/SbsaQemuPlatformDxe/SbsaQemuPlatformDxe.inf
@@ -41,6 +41,10 @@
gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdPlatformVersionMajor
gArmVirtSbsaQemuPlatformTokenSpaceGuid.PcdPlatformVersionMinor
+ gArmTokenSpaceGuid.PcdGicDistributorBase
+ gArmTokenSpaceGuid.PcdGicRedistributorsBase
+
+
[Depex]
TRUE
--
2.40.1
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#104862): https://edk2.groups.io/g/devel/message/104862
Mute This Topic: https://groups.io/mt/98900381/21656
Group Owner: devel+ow...@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
