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Re: [PATCH v2 16/86] arm:imx25_pdk: use memdev for RAM


From: Philippe Mathieu-Daudé
Subject: Re: [PATCH v2 16/86] arm:imx25_pdk: use memdev for RAM
Date: Wed, 15 Jan 2020 20:18:03 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2

On 1/15/20 4:06 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.

Signed-off-by: Igor Mammedov <address@hidden>
---
CC: address@hidden
CC: address@hidden
CC: address@hidden
---
  hw/arm/imx25_pdk.c | 9 ++++-----
  1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/hw/arm/imx25_pdk.c b/hw/arm/imx25_pdk.c
index a2b7b35..9087fcb 100644
--- a/hw/arm/imx25_pdk.c
+++ b/hw/arm/imx25_pdk.c
@@ -58,7 +58,6 @@
typedef struct IMX25PDK {
      FslIMX25State soc;
-    MemoryRegion ram;
      MemoryRegion ram_alias;
  } IMX25PDK;
@@ -84,10 +83,8 @@ static void imx25_pdk_init(MachineState *machine)
          exit(EXIT_FAILURE);
      }
- memory_region_allocate_system_memory(&s->ram, NULL, "imx25.ram",
-                                         machine->ram_size);
      memory_region_add_subregion(get_system_memory(), FSL_IMX25_SDRAM0_ADDR,
-                                &s->ram);
+                                machine->ram);
/* initialize the alias memory if any */
      for (i = 0, ram_size = machine->ram_size, alias_offset = 0;
@@ -107,7 +104,8 @@ static void imx25_pdk_init(MachineState *machine)
if (size < ram[i].size) {
              memory_region_init_alias(&s->ram_alias, NULL, "ram.alias",
-                                     &s->ram, alias_offset, ram[i].size - 
size);
+                                     machine->ram,
+                                     alias_offset, ram[i].size - size);
              memory_region_add_subregion(get_system_memory(),
                                          ram[i].addr + size, &s->ram_alias);
          }
@@ -135,6 +133,7 @@ static void imx25_pdk_machine_init(MachineClass *mc)
      mc->desc = "ARM i.MX25 PDK board (ARM926)";
      mc->init = imx25_pdk_init;
      mc->ignore_memory_transaction_failures = true;
+    mc->default_ram_id = "imx25.ram";
  }
DEFINE_MACHINE("imx25-pdk", imx25_pdk_machine_init)


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




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