[PATCH v6 11/79] arm/collie: use memdev for RAM

[Igor Mammedov]

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.

PS:
 - while at it add check for user supplied RAM size and error
   out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
---
v6:
  * drop '.ram_size = 0x20000000'  removal from collie_binfo
    as arm_load_kernel() depends on it.
    (Philippe Mathieu-Daudé <address@hidden>)
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <address@hidden>)
v3:
  * instead of RAM_ADDR_UFMT adding use size_to_str()
     Philippe Mathieu-Daudé <address@hidden>

CC: address@hidden
CC: address@hidden
---
 hw/arm/collie.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/hw/arm/collie.c b/hw/arm/collie.c
index 970a4405cc..4992084a3f 100644
--- a/hw/arm/collie.c
+++ b/hw/arm/collie.c
@@ -10,6 +10,7 @@
  */
 #include "qemu/osdep.h"
 #include "qemu/units.h"
+#include "qemu/cutils.h"
 #include "hw/sysbus.h"
 #include "hw/boards.h"
 #include "strongarm.h"
@@ -27,13 +28,18 @@ static void collie_init(MachineState *machine)
 {
     StrongARMState *s;
     DriveInfo *dinfo;
-    MemoryRegion *sdram = g_new(MemoryRegion, 1);
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
+
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
 
     s = sa1110_init(machine->cpu_type);
 
-    memory_region_allocate_system_memory(sdram, NULL, "strongarm.sdram",
-                                         collie_binfo.ram_size);
-    memory_region_add_subregion(get_system_memory(), SA_SDCS0, sdram);
+    memory_region_add_subregion(get_system_memory(), SA_SDCS0, machine->ram);
 
     dinfo = drive_get(IF_PFLASH, 0, 0);
     pflash_cfi01_register(SA_CS0, "collie.fl1", 0x02000000,
@@ -57,6 +63,8 @@ static void collie_machine_init(MachineClass *mc)
     mc->init = collie_init;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("sa1110");
+    mc->default_ram_size = 0x20000000;
+    mc->default_ram_id = "strongarm.sdram";
 }
 
 DEFINE_MACHINE("collie", collie_machine_init)
-- 
2.18.1