zynqmp: add dts overlay for hypervisor mode

The pcie node was creating untyped objects with improper addresses.

Change-Id: I0d4483a904ec00a8cbb9a99d93fe084afb4ffdda

include/arch/arm/armv/armv8-a/64/armv/vcpu.h

@@ -25,7 +25,14 @@
 /* Allow native tasks to run at EL0, but restrict access */
 #define HCR_NATIVE ( HCR_COMMON | HCR_TGE | HCR_TVM | HCR_TTLB | HCR_DC \
                    | HCR_TAC | HCR_SWIO |  HCR_TSC | HCR_IMO | HCR_FMO | HCR_AMO)
+
+#ifdef CONFIG_ALLOW_SMC_CALLS
+/* This should only be a temporary fix. Guests should be able to call into EL3. These
+ * SMC calls should be virtualized in the VMM */
+#define HCR_VCPU   ( HCR_COMMON )
+#else
 #define HCR_VCPU   ( HCR_COMMON | HCR_TSC)
+#endif
 
 #define SCTLR_EL1_UCI       BIT(26)     /* Enable EL0 access to DC CVAU, DC CIVAC, DC CVAC,
                                            and IC IVAU in AArch64 state   */
@@ -661,5 +668,3 @@ static inline bool_t armv_handleVCPUFault(word_t hsr)
 }
 
 #endif /* End of CONFIG_ARM_HYPERVISOR_SUPPORT */
-
-

src/arch/arm/config.cmake

@@ -165,6 +165,12 @@ config_option(
     DEFAULT_DISABLED OFF
 )
 
+config_option(
+    KernelAllowSMCCalls ALLOW_SMC_CALLS "Allow virtualized guests to make SMC calls"
+    DEFAULT OFF
+    DEPENDS "KernelArmHypervisorSupport"
+)
+
 if(KernelAArch32FPUEnableContextSwitch OR KernelSel4ArchAarch64)
     set(KernelHaveFPU ON)
 endif()

src/plat/zynqmp/config.cmake

@@ -36,6 +36,11 @@ if(KernelPlatformZynqmp)
     endif()
     list(APPEND KernelDTSList "src/plat/zynqmp/overlay-zynqmp.dts")
 
+    if(KernelArmHypervisorSupport)
+        set(KernelAllowSMCCalls ON)
+        list(APPEND KernelDTSList "src/plat/zynqmp/overlay-zynqmp-hyp.dts")
+    endif()
+
     declare_default_headers(
         TIMER_FREQUENCY 100000000llu
         MAX_IRQ 187

src/plat/zynqmp/overlay-zynqmp-hyp.dts

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2019, DornerWorks
+ *
+ * This software may be distributed and modified according to the terms of
+ * the GNU General Public License version 2. Note that NO WARRANTY is provided.
+ * See "LICENSE_GPLv2.txt" for details.
+ *
+ * @TAG(DORNERWORKS_GPL)
+ */
+
+/ {
+    amba {
+    	/* bug: pcie node generates untyped objects too large for hypervisor mode */
+    	/delete-node/ pcie@fd0e0000;
+    };
+};