memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imamm...@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <phi...@redhat.com>
Tested-by: Philippe Mathieu-Daudé <phi...@redhat.com>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
---
 hw/sparc/leon3.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/sparc/leon3.c b/hw/sparc/leon3.c
index f5a087dd86..5fa58aa55f 100644
--- a/hw/sparc/leon3.c
+++ b/hw/sparc/leon3.c
@@ -189,7 +189,6 @@ static void leon3_generic_hw_init(MachineState *machine)
     SPARCCPU *cpu;
     CPUSPARCState   *env;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *prom = g_new(MemoryRegion, 1);
     int         ret;
     char       *filename;
@@ -251,8 +250,8 @@ static void leon3_generic_hw_init(MachineState *machine)
         exit(1);
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size);
-    memory_region_add_subregion(address_space_mem, LEON3_RAM_OFFSET, ram);
+    memory_region_add_subregion(address_space_mem, LEON3_RAM_OFFSET,
+                                machine->ram);
 
     /* Allocate BIOS */
     prom_size = 8 * MiB;
@@ -358,6 +357,7 @@ static void leon3_generic_machine_init(MachineClass *mc)
     mc->desc = "Leon-3 generic";
     mc->init = leon3_generic_hw_init;
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3");
+    mc->default_ram_id = "leon3.ram";
 }
 
 DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init)
-- 
2.18.1


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