m68k/mcf5208: use memdev for RAM

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 <imammedo@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200219160953.13771-49-imammedo@redhat.com>

diff --git a/hw/m68k/mcf5208.c b/hw/m68k/mcf5208.c
index a999c21982d59f39c60c7faf330188a1e0204c36..31622c71cb86a1d079b2b0b1cb752e1195baf260 100644 (file)
--- a/hw/m68k/mcf5208.c
+++ b/hw/m68k/mcf5208.c
@@ -234,7 +234,6 @@ static void mcf5208evb_init(MachineState *machine)
     qemu_irq *pic;
     MemoryRegion *address_space_mem = get_system_memory();
     MemoryRegion *rom = g_new(MemoryRegion, 1);
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *sram = g_new(MemoryRegion, 1);
 
     cpu = M68K_CPU(cpu_create(machine->cpu_type));
@@ -249,8 +248,7 @@ static void mcf5208evb_init(MachineState *machine)
     memory_region_add_subregion(address_space_mem, 0x00000000, rom);
 
     /* DRAM at 0x40000000 */
-    memory_region_allocate_system_memory(ram, NULL, "mcf5208.ram", ram_size);
-    memory_region_add_subregion(address_space_mem, 0x40000000, ram);
+    memory_region_add_subregion(address_space_mem, 0x40000000, machine->ram);
 
     /* Internal SRAM.  */
     memory_region_init_ram(sram, NULL, "mcf5208.sram", 16 * KiB, &error_fatal);
@@ -354,6 +352,7 @@ static void mcf5208evb_machine_init(MachineClass *mc)
     mc->init = mcf5208evb_init;
     mc->is_default = 1;
     mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5208");
+    mc->default_ram_id = "mcf5208.ram";
 }
 
 DEFINE_MACHINE("mcf5208evb", mcf5208evb_machine_init)