[PATCH v3 65/82] ppc/{ppc440_bamboo, sam460ex}: 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.

Signed-off-by: Igor Mammedov <address@hidden>
---
v3:
  * drop ram_size from comment above ppc4xx_sdram_banks
     (BALATON Zoltan <address@hidden>)
  * move memory alias initialization into the same loop
    where RAM is split on banks.
     (BALATON Zoltan <address@hidden>)
v3.1
  * rebase on top of previous patch due to changed context

CC: address@hidden
CC: address@hidden
CC: address@hidden
---
 include/hw/ppc/ppc4xx.h |  2 +-
 hw/ppc/ppc440_bamboo.c  |  3 ++-
 hw/ppc/ppc4xx_devs.c    | 25 +++++++++----------------
 hw/ppc/sam460ex.c       |  3 ++-
 4 files changed, 14 insertions(+), 19 deletions(-)

diff --git a/include/hw/ppc/ppc4xx.h b/include/hw/ppc/ppc4xx.h
index b8c8f32..cc19c8d 100644
--- a/include/hw/ppc/ppc4xx.h
+++ b/include/hw/ppc/ppc4xx.h
@@ -42,7 +42,7 @@ enum {
 qemu_irq *ppcuic_init (CPUPPCState *env, qemu_irq *irqs,
                        uint32_t dcr_base, int has_ssr, int has_vr);
 
-void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
+void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
                         MemoryRegion ram_memories[],
                         hwaddr ram_bases[], hwaddr ram_sizes[],
                         const ram_addr_t sdram_bank_sizes[]);
diff --git a/hw/ppc/ppc440_bamboo.c b/hw/ppc/ppc440_bamboo.c
index 577f7c2..1d4a11d 100644
--- a/hw/ppc/ppc440_bamboo.c
+++ b/hw/ppc/ppc440_bamboo.c
@@ -202,7 +202,7 @@ static void bamboo_init(MachineState *machine)
     /* SDRAM controller */
     memset(ram_bases, 0, sizeof(ram_bases));
     memset(ram_sizes, 0, sizeof(ram_sizes));
-    ppc4xx_sdram_banks(ram_size, PPC440EP_SDRAM_NR_BANKS, ram_memories,
+    ppc4xx_sdram_banks(machine->ram, PPC440EP_SDRAM_NR_BANKS, ram_memories,
                        ram_bases, ram_sizes, ppc440ep_sdram_bank_sizes);
     /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
     ppc4xx_sdram_init(env, pic[14], PPC440EP_SDRAM_NR_BANKS, ram_memories,
@@ -289,6 +289,7 @@ static void bamboo_machine_init(MachineClass *mc)
     mc->desc = "bamboo";
     mc->init = bamboo_init;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440epb");
+    mc->default_ram_id = "ppc4xx.sdram";
 }
 
 DEFINE_MACHINE("bamboo", bamboo_machine_init)
diff --git a/hw/ppc/ppc4xx_devs.c b/hw/ppc/ppc4xx_devs.c
index 5a3bb80..1db7e41 100644
--- a/hw/ppc/ppc4xx_devs.c
+++ b/hw/ppc/ppc4xx_devs.c
@@ -666,23 +666,21 @@ void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, 
int nbanks,
         sdram_map_bcr(sdram);
 }
 
-/* Fill in consecutive SDRAM banks with 'ram_size' bytes of memory.
+/* Split RAM between SDRAM banks.
  *
  * sdram_bank_sizes[] must be 0-terminated.
  *
  * The 4xx SDRAM controller supports a small number of banks, and each bank
  * must be one of a small set of sizes. The number of banks and the supported
  * sizes varies by SoC. */
-void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
+void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
                         MemoryRegion ram_memories[],
                         hwaddr ram_bases[], hwaddr ram_sizes[],
                         const ram_addr_t sdram_bank_sizes[])
 {
-    MemoryRegion *ram = g_malloc0(sizeof(*ram));
-    ram_addr_t size_left = ram_size;
+    ram_addr_t size_left = memory_region_size(ram);
     ram_addr_t base = 0;
     ram_addr_t bank_size;
-    int last_bank = 0;
     int i;
     int j;
 
@@ -690,11 +688,15 @@ void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
         for (j = 0; sdram_bank_sizes[j] != 0; j++) {
             bank_size = sdram_bank_sizes[j];
             if (bank_size <= size_left) {
+                char name[32];
+
                 ram_bases[i] = base;
                 ram_sizes[i] = bank_size;
                 base += bank_size;
                 size_left -= bank_size;
-                last_bank = i;
+                snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
+                memory_region_init_alias(&ram_memories[i], NULL, name, ram,
+                                         ram_bases[i], ram_sizes[i]);
                 break;
             }
         }
@@ -705,7 +707,7 @@ void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
     }
 
     if (size_left) {
-        ram_addr_t used_size = ram_size - size_left;
+        ram_addr_t used_size = memory_region_size(ram) - size_left;
         GString *s = g_string_new(NULL);
 
         for (i = 0; sdram_bank_sizes[i]; i++) {
@@ -721,15 +723,6 @@ void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
         g_string_free(s, true);
         exit(EXIT_FAILURE);
     }
-
-    memory_region_allocate_system_memory(ram, NULL, "ppc4xx.sdram", ram_size);
-
-    for (i = 0; i <= last_bank; i++) {
-        char name[32];
-        snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
-        memory_region_init_alias(&ram_memories[i], NULL, name, ram,
-                                 ram_bases[i], ram_sizes[i]);
-    }
 }
 
 /*****************************************************************************/
diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c
index 949acba..b48aea5 100644
--- a/hw/ppc/sam460ex.c
+++ b/hw/ppc/sam460ex.c
@@ -324,7 +324,7 @@ static void sam460ex_init(MachineState *machine)
     /* SDRAM controller */
     /* put all RAM on first bank because board has one slot
      * and firmware only checks that */
-    ppc4xx_sdram_banks(machine->ram_size, 1, ram_memories, ram_bases, 
ram_sizes,
+    ppc4xx_sdram_banks(machine->ram, 1, ram_memories, ram_bases, ram_sizes,
                        ppc460ex_sdram_bank_sizes);
 
     /* FIXME: does 460EX have ECC interrupts? */
@@ -483,6 +483,7 @@ static void sam460ex_machine_init(MachineClass *mc)
     mc->init = sam460ex_init;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("460exb");
     mc->default_ram_size = 512 * MiB;
+    mc->default_ram_id = "ppc4xx.sdram";
 }
 
 DEFINE_MACHINE("sam460ex", sam460ex_machine_init)
-- 
2.7.4