From: Ruslan Ruslichenko <Ruslan_Ruslichenko@epam.com>

The patch registers FDT compatibility handlers and
QOM aliases of memory subsystem, so that memory
regions can be created from a device tree model.

The alias 'qemu:system-memory' could be used to attach
subregion to root address space.

Also 'qemu-memory-region' types can be used to create
new memory regions.

Signed-off-by: Ruslan Ruslichenko <Ruslan_Ruslichenko@epam.com>
---
 system/memory.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/system/memory.c b/system/memory.c
index 866c741973..867228922b 100644
--- a/system/memory.c
+++ b/system/memory.c
@@ -4077,3 +4077,27 @@ static void memory_register_types(void)
 }
 
 type_init(memory_register_types)
+
+static int sysmem_fdt_init(char *node_path, FDTMachineInfo *fdti,
+                           void *priv)
+{
+    fdt_init_set_opaque(fdti, node_path, OBJECT(get_system_memory()));
+    return 0;
+}
+
+fdt_register_compatibility(sysmem_fdt_init, "compatible:qemu:system-memory");
+
+static const TypeInfo fdt_qom_aliases[] = {
+    {   .name = "qemu-memory-region",       .parent = "memory-region"  },
+};
+
+static void fdt_memory_types(void)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(fdt_qom_aliases); ++i) {
+        type_register_static(&fdt_qom_aliases[i]);
+    }
+}
+
+type_init(fdt_memory_types)
-- 
2.43.0