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Re: [PATCH v5 26/79] arm/omap_sx1: use memdev for RAM


From: Philippe Mathieu-Daudé
Subject: Re: [PATCH v5 26/79] arm/omap_sx1: use memdev for RAM
Date: Tue, 18 Feb 2020 18:20:45 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1

On 2/17/20 6:33 PM, Igor Mammedov wrote:
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: Andrew Jones <address@hidden>
---
v2:
   * fix format string causing build failure on 32-bit host
     (Philippe Mathieu-Daudé <address@hidden>)
---
  hw/arm/omap_sx1.c | 20 +++++++++++++++-----
  1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/hw/arm/omap_sx1.c b/hw/arm/omap_sx1.c
index be245714db..2bebab4171 100644
--- a/hw/arm/omap_sx1.c
+++ b/hw/arm/omap_sx1.c
@@ -35,6 +35,7 @@
  #include "sysemu/qtest.h"
  #include "exec/address-spaces.h"
  #include "cpu.h"
+#include "qemu/cutils.h"
/*****************************************************************************/
  /* Siemens SX1 Cellphone V1 */
@@ -102,8 +103,8 @@ static struct arm_boot_info sx1_binfo = {
  static void sx1_init(MachineState *machine, const int version)
  {
      struct omap_mpu_state_s *mpu;
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
      MemoryRegion *address_space = get_system_memory();
-    MemoryRegion *dram = g_new(MemoryRegion, 1);
      MemoryRegion *flash = g_new(MemoryRegion, 1);
      MemoryRegion *cs = g_new(MemoryRegion, 4);
      static uint32_t cs0val = 0x00213090;
@@ -115,15 +116,20 @@ static void sx1_init(MachineState *machine, const int 
version)
      uint32_t flash_size = flash0_size;
      int be;
+ 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);
+    }
+
      if (version == 2) {
          flash_size = flash2_size;
      }
- memory_region_allocate_system_memory(dram, NULL, "omap1.dram",
-                                         sx1_binfo.ram_size);
-    memory_region_add_subregion(address_space, OMAP_EMIFF_BASE, dram);
+    memory_region_add_subregion(address_space, OMAP_EMIFF_BASE, machine->ram);
- mpu = omap310_mpu_init(dram, machine->cpu_type);
+    mpu = omap310_mpu_init(machine->ram, machine->cpu_type);
/* External Flash (EMIFS) */
      memory_region_init_ram(flash, NULL, "omap_sx1.flash0-0", flash_size,
@@ -223,6 +229,8 @@ static void sx1_machine_v2_class_init(ObjectClass *oc, void 
*data)
      mc->init = sx1_init_v2;
      mc->ignore_memory_transaction_failures = true;
      mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
+    mc->default_ram_size = sdram_size;
+    mc->default_ram_id = "omap1.dram";
  }
static const TypeInfo sx1_machine_v2_type = {
@@ -239,6 +247,8 @@ static void sx1_machine_v1_class_init(ObjectClass *oc, void 
*data)
      mc->init = sx1_init_v1;
      mc->ignore_memory_transaction_failures = true;
      mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
+    mc->default_ram_size = sdram_size;
+    mc->default_ram_id = "omap1.dram";
  }
static const TypeInfo sx1_machine_v1_type = {


Reviewed-by: Philippe Mathieu-Daudé <address@hidden>




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