Patchwork [v2,09/22] integratorcp: convert to memory API (RAM/flash only)

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Submitter Avi Kivity
Date Aug. 24, 2011, 1:40 p.m.
Message ID <1314193259-27092-10-git-send-email-avi@redhat.com>
Download mbox | patch
Permalink /patch/111370/
State New
Headers show

Comments

Avi Kivity - Aug. 24, 2011, 1:40 p.m.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
 hw/integratorcp.c |   28 ++++++++++++++++++++--------
 1 files changed, 20 insertions(+), 8 deletions(-)

Patch

diff --git a/hw/integratorcp.c b/hw/integratorcp.c
index 2814108..3c8982e 100644
--- a/hw/integratorcp.c
+++ b/hw/integratorcp.c
@@ -13,11 +13,13 @@ 
 #include "boards.h"
 #include "arm-misc.h"
 #include "net.h"
+#include "exec-memory.h"
 
 typedef struct {
     SysBusDevice busdev;
     uint32_t memsz;
-    uint32_t flash_offset;
+    MemoryRegion flash;
+    bool flash_mapped;
     uint32_t cm_osc;
     uint32_t cm_ctrl;
     uint32_t cm_lock;
@@ -108,9 +110,15 @@  static uint32_t integratorcm_read(void *opaque, target_phys_addr_t offset)
 static void integratorcm_do_remap(integratorcm_state *s, int flash)
 {
     if (flash) {
-        cpu_register_physical_memory(0, 0x100000, IO_MEM_RAM);
+        if (s->flash_mapped) {
+            sysbus_del_memory(&s->busdev, &s->flash);
+            s->flash_mapped = false;
+        }
     } else {
-        cpu_register_physical_memory(0, 0x100000, s->flash_offset | IO_MEM_RAM);
+        if (!s->flash_mapped) {
+            sysbus_add_memory_overlap(&s->busdev, 0, &s->flash, 1);
+            s->flash_mapped = true;
+        }
     }
     //??? tlb_flush (cpu_single_env, 1);
 }
@@ -252,7 +260,8 @@  static int integratorcm_init(SysBusDevice *dev)
     }
     memcpy(integrator_spd + 73, "QEMU-MEMORY", 11);
     s->cm_init = 0x00000112;
-    s->flash_offset = qemu_ram_alloc(NULL, "integrator.flash", 0x100000);
+    memory_region_init_ram(&s->flash, NULL, "integrator.flash", 0x100000);
+    s->flash_mapped = false;
 
     iomemtype = cpu_register_io_memory(integratorcm_readfn,
                                        integratorcm_writefn, s,
@@ -456,7 +465,9 @@  static void integratorcp_init(ram_addr_t ram_size,
                      const char *initrd_filename, const char *cpu_model)
 {
     CPUState *env;
-    ram_addr_t ram_offset;
+    MemoryRegion *address_space_mem = get_system_memory();
+    MemoryRegion *ram = g_new(MemoryRegion, 1);
+    MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
     qemu_irq pic[32];
     qemu_irq *cpu_pic;
     DeviceState *dev;
@@ -469,13 +480,14 @@  static void integratorcp_init(ram_addr_t ram_size,
         fprintf(stderr, "Unable to find CPU definition\n");
         exit(1);
     }
-    ram_offset = qemu_ram_alloc(NULL, "integrator.ram", ram_size);
+    memory_region_init_ram(ram, NULL, "integrator.ram", ram_size);
     /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash.  */
     /* ??? RAM should repeat to fill physical memory space.  */
     /* SDRAM at address zero*/
-    cpu_register_physical_memory(0, ram_size, ram_offset | IO_MEM_RAM);
+    memory_region_add_subregion(address_space_mem, 0, ram);
     /* And again at address 0x80000000 */
-    cpu_register_physical_memory(0x80000000, ram_size, ram_offset | IO_MEM_RAM);
+    memory_region_init_alias(ram_alias, "ram.alias", ram, 0, ram_size);
+    memory_region_add_subregion(address_space_mem, 0x80000000, ram_alias);
 
     dev = qdev_create(NULL, "integrator_core");
     qdev_prop_set_uint32(dev, "memsz", ram_size >> 20);