arm-autonomy: Add support for N1SDP

This patch includes the following changes for n1sdp:

* Add the Xen defconfig and early printk setting;
* Setting the proper Xen device-tree boot args;
* Remove some entries in xen devicetree (PM and SMMU) to make is
compatible with XEN and extra registers settings required for PCI
quirks to communicate with SCP.

Change-Id: Ic968728115787de8d9bfcaaf883fd8573ff6c9c9
Issue-Id: SCM-888
Signed-off-by: Diego Sueiro <diego.sueiro@arm.com>
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>

meta-arm-autonomy/dynamic-layers/meta-arm-bsp/recipes-extended/xen-devicetree/files/xen-n1sdp.dtsi

@@ -0,0 +1,39 @@
+/*
+ * Modify N1SDP DTB to work properly when Xen is used
+ */
+
+/ {
+
+    /*
+     * pmu is using PPI interrupts which are reserved by xen
+     * remove pm nodes
+     */
+    /delete-node/ pmu;
+    /delete-node/ spe-pmu;
+
+    /*
+     * disable IOMMU until we have a proper support in xen
+     */
+    /delete-node/ iommu@4f000000;
+    /delete-node/ iommu@4f400000;
+
+    /*
+     * Set extra registers required for PCI quirks to communicate with SCP
+     * and remove invalid properties due to removal
+     */
+    pcie@68000000 {
+        reg = <0 0x68000000 0 0x1200000>,
+                <0 0x06000000 0 0x80000>,
+                <0 0x62000000 0 0x80000>;
+        /delete-property/ msi-map;
+        /delete-property/ iommu-map;
+    };
+
+    pcie@70000000 {
+        reg = <0 0x70000000 0 0x1200000>,
+                <0 0x06000000 0 0x80000>,
+                <0 0x60000000 0 0x80000>;
+        /delete-property/ msi-map;
+        /delete-property/ iommu-map;
+    };
+};

meta-arm-autonomy/dynamic-layers/meta-arm-bsp/recipes-extended/xen-devicetree/xen-devicetree.bbappend

@@ -6,10 +6,17 @@ FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
 SRC_URI_append_juno = " file://xen-juno.dtsi"
 XEN_DEVICETREE_DTSI_MERGE_append_juno = " xen-juno.dtsi"
 
+# Add a dtb snippet to remove pmu and iommu in dom0 on N1SDP
+SRC_URI_append_n1sdp = " file://xen-n1sdp.dtsi"
+XEN_DEVICETREE_DTSI_MERGE_append_n1sdp = " xen-n1sdp.dtsi"
+
 # Board specific configs
 XEN_DEVICETREE_DOM0_BOOTARGS_append_juno = " root=/dev/sda1 rootwait"
 XEN_DEVICETREE_XEN_BOOTARGS_append_juno = " console=dtuart dtuart=serial0 bootscrub=0 iommu=no"
 
+XEN_DEVICETREE_DOM0_BOOTARGS_append_n1sdp = " root=/dev/sda1 rootwait"
+XEN_DEVICETREE_XEN_BOOTARGS_append_n1sdp = " console=dtuart dtuart=serial0 bootscrub=0 iommu=no"
+
 XEN_DEVICETREE_DOM0_BOOTARGS_append_fvp-base = " root=/dev/vda2"
 XEN_DEVICETREE_XEN_BOOTARGS_append_fvp-base = " console=dtuart dtuart=serial0 bootscrub=0"
 

meta-arm-autonomy/dynamic-layers/meta-arm-bsp/recipes-extended/xen/files/n1sdp/defconfig

@@ -0,0 +1,100 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# Xen/arm 4.12.2 Configuration
+#
+CONFIG_64BIT=y
+CONFIG_ARM_64=y
+CONFIG_ARM=y
+CONFIG_ARCH_DEFCONFIG="arch/arm/configs/arm64_defconfig"
+
+#
+# Architecture Features
+#
+CONFIG_NR_CPUS=128
+CONFIG_ACPI=y
+CONFIG_GICV3=y
+CONFIG_HAS_ITS=y
+CONFIG_HVM=y
+# CONFIG_NEW_VGIC is not set
+CONFIG_SBSA_VUART_CONSOLE=y
+CONFIG_ARM_SSBD=y
+CONFIG_HARDEN_BRANCH_PREDICTOR=y
+
+#
+# ARM errata workaround via the alternative framework
+#
+CONFIG_ARM64_ERRATUM_827319=y
+CONFIG_ARM64_ERRATUM_824069=y
+CONFIG_ARM64_ERRATUM_819472=y
+CONFIG_ARM64_ERRATUM_832075=y
+CONFIG_ARM64_ERRATUM_834220=y
+CONFIG_ARM64_HARDEN_BRANCH_PREDICTOR=y
+CONFIG_ALL_PLAT=y
+# CONFIG_QEMU is not set
+# CONFIG_RCAR3 is not set
+# CONFIG_MPSOC is not set
+# CONFIG_NO_PLAT is not set
+CONFIG_ALL64_PLAT=y
+# CONFIG_ALL32_PLAT is not set
+CONFIG_MPSOC_PLATFORM=y
+
+#
+# Common Features
+#
+CONFIG_HAS_ALTERNATIVE=y
+CONFIG_HAS_DEVICE_TREE=y
+# CONFIG_MEM_ACCESS is not set
+CONFIG_HAS_PDX=y
+# CONFIG_TMEM is not set
+CONFIG_XSM=y
+CONFIG_XSM_FLASK=y
+CONFIG_XSM_FLASK_AVC_STATS=y
+# CONFIG_XSM_FLASK_POLICY is not set
+CONFIG_XSM_SILO=y
+# CONFIG_XSM_DUMMY_DEFAULT is not set
+# CONFIG_XSM_FLASK_DEFAULT is not set
+CONFIG_XSM_SILO_DEFAULT=y
+# CONFIG_ARGO is not set
+
+#
+# Schedulers
+#
+CONFIG_SCHED_CREDIT=y
+CONFIG_SCHED_CREDIT2=y
+CONFIG_SCHED_RTDS=y
+# CONFIG_SCHED_ARINC653 is not set
+CONFIG_SCHED_NULL=y
+# CONFIG_SCHED_CREDIT_DEFAULT is not set
+CONFIG_SCHED_CREDIT2_DEFAULT=y
+# CONFIG_SCHED_RTDS_DEFAULT is not set
+# CONFIG_SCHED_NULL_DEFAULT is not set
+CONFIG_SCHED_DEFAULT="credit2"
+# CONFIG_LIVEPATCH is not set
+CONFIG_SUPPRESS_DUPLICATE_SYMBOL_WARNINGS=y
+CONFIG_CMDLINE=""
+CONFIG_DOM0_MEM=""
+
+#
+# Device Drivers
+#
+CONFIG_HAS_NS16550=y
+CONFIG_HAS_CADENCE_UART=y
+CONFIG_HAS_MVEBU=y
+CONFIG_HAS_PL011=y
+CONFIG_HAS_SCIF=y
+CONFIG_HAS_PASSTHROUGH=y
+CONFIG_ARM_SMMU=y
+CONFIG_DEFCONFIG_LIST="arch/arm/configs/arm64_defconfig"
+
+#
+# Debugging Options
+#
+# CONFIG_DEBUG is not set
+CONFIG_DEBUG_INFO=y
+# CONFIG_FRAME_POINTER is not set
+# CONFIG_COVERAGE is not set
+# CONFIG_LOCK_PROFILE is not set
+# CONFIG_PERF_COUNTERS is not set
+CONFIG_VERBOSE_DEBUG=y
+# CONFIG_DEVICE_TREE_DEBUG is not set
+# CONFIG_SCRUB_DEBUG is not set

meta-arm-autonomy/dynamic-layers/meta-arm-bsp/recipes-extended/xen/xen_%.bbappend

@@ -5,6 +5,7 @@ XEN_CONFIG_EARLY_PRINTK_juno = "juno"
 XEN_CONFIG_EARLY_PRINTK_gem5-arm64 = "vexpress"
 XEN_CONFIG_EARLY_PRINTK_fvp-base = "fastmodel"
 XEN_CONFIG_EARLY_PRINTK_foundation-armv8 = "fastmodel"
+XEN_CONFIG_EARLY_PRINTK_n1sdp = "pl011,0x2a400000"
 
 # Foundation-armv8 support
 COMPATIBLE_MACHINE_foundation-armv8 = "foundation-armv8"
@@ -25,3 +26,7 @@ SRC_URI_append_juno = " file://juno/defconfig"
 # Fix problem with number of interrupts on gem5
 SRC_URI_append_gem5-arm64 = " file://4.12.0/0001-xen-arm-Cap-the-number-of-interrupt-lines-for-dom0.patch"
 
+# N1SDP support
+COMPATIBLE_MACHINE_n1sdp = "n1sdp"
+
+SRC_URI_append_n1sdp = " file://n1sdp/defconfig"