[PATCH 4/8] hw/arm/virt: Use the pvpanic device

[Mihai Carabas <mihai.carabas@oracle.com>]

From: Peng Hao <peng.hao2@zte.com.cn>

Add pvpanic device in arm virt machine.

Signed-off-by: Peng Hao <peng.hao2@zte.com.cn>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
---
 hw/arm/virt.c         | 25 +++++++++++++++++++++++++
 include/hw/arm/virt.h |  2 ++
 2 files changed, 27 insertions(+)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index e465a98..63f09a6 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -78,6 +78,7 @@
 #include "hw/virtio/virtio-iommu.h"
 #include "hw/char/pl011.h"
 #include "qemu/guest-random.h"
+#include "hw/misc/pvpanic.h"
 
 #define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
     static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
@@ -152,6 +153,7 @@ static const MemMapEntry base_memmap[] = {
     [VIRT_ACPI_GED] =           { 0x09080000, ACPI_GED_EVT_SEL_LEN },
     [VIRT_NVDIMM_ACPI] =        { 0x09090000, NVDIMM_ACPI_IO_LEN},
     [VIRT_PVTIME] =             { 0x090a0000, 0x00010000 },
+    [VIRT_PVPANIC] =            { 0x090b0000, 0x00000002 },
     [VIRT_MMIO] =               { 0x0a000000, 0x00000200 },
     /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
     [VIRT_PLATFORM_BUS] =       { 0x0c000000, 0x02000000 },
@@ -226,6 +228,27 @@ static void create_kaslr_seed(VirtMachineState *vms, const char *node)
     qemu_fdt_setprop_u64(vms->fdt, node, "kaslr-seed", seed);
 }
 
+static void create_pvpanic_device(const VirtMachineState *vms)
+{
+    char *nodename;
+    hwaddr base = vms->memmap[VIRT_PVPANIC].base;
+    hwaddr size = vms->memmap[VIRT_PVPANIC].size;
+
+    if (!vms->pvpanic) {
+        return;
+    }
+    sysbus_create_simple(TYPE_PVPANIC_MMIO, base, NULL);
+
+    nodename = g_strdup_printf("/pvpanic-mmio@%" PRIx64, base);
+    qemu_fdt_add_subnode(vms->fdt, nodename);
+    qemu_fdt_setprop_string(vms->fdt, nodename,
+                            "compatible", "qemu,pvpanic-mmio");
+    qemu_fdt_setprop_sized_cells(vms->fdt, nodename, "reg",
+                                 2, base, 2, size);
+
+    g_free(nodename);
+}
+
 static void create_fdt(VirtMachineState *vms)
 {
     MachineState *ms = MACHINE(vms);
@@ -1957,6 +1980,8 @@ static void machvirt_init(MachineState *machine)
 
     virt_flash_fdt(vms, sysmem, secure_sysmem ?: sysmem);
 
+    create_pvpanic_device(vms);
+
     create_gic(vms);
 
     virt_cpu_post_init(vms, possible_cpus->len, sysmem);
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index aad6d69..e6410c3 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -69,6 +69,7 @@ enum {
     VIRT_GIC_ITS,
     VIRT_GIC_REDIST,
     VIRT_SMMU,
+    VIRT_PVPANIC,
     VIRT_UART,
     VIRT_MMIO,
     VIRT_RTC,
@@ -139,6 +140,7 @@ struct VirtMachineState {
     bool highmem;
     bool highmem_ecam;
     bool its;
+    bool pvpanic;
     bool virt;
     bool ras;
     bool mte;
-- 
1.8.3.1