[PATCH 17/24] hw/arm/mps2-tz: Set MachineClass default_ram info from RAMInfo data

[Peter Maydell <peter.maydell@linaro.org>]

Instead of hardcoding the MachineClass default_ram_size and
default_ram_id fields, set them on class creation by finding the
entry in the RAMInfo array which is marked as being the QEMU system
RAM.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/mps2-tz.c | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/hw/arm/mps2-tz.c b/hw/arm/mps2-tz.c
index 1e8dde768c2..b46b32746e0 100644
--- a/hw/arm/mps2-tz.c
+++ b/hw/arm/mps2-tz.c
@@ -811,8 +811,26 @@ static void mps2tz_class_init(ObjectClass *oc, void *data)
 
     mc->init = mps2tz_common_init;
     iic->check = mps2_tz_idau_check;
-    mc->default_ram_size = 16 * MiB;
-    mc->default_ram_id = "mps.ram";
+}
+
+static void mps2tz_set_default_ram_info(MPS2TZMachineClass *mmc)
+{
+    /*
+     * Set mc->default_ram_size and default_ram_id from the
+     * information in mmc->raminfo.
+     */
+    MachineClass *mc = MACHINE_CLASS(mmc);
+    const RAMInfo *p;
+
+    for (p = mmc->raminfo; p->name; p++) {
+        if (p->mrindex < 0) {
+            /* Found the entry for "system memory" */
+            mc->default_ram_size = p->size;
+            mc->default_ram_id = p->name;
+            return;
+        }
+    }
+    g_assert_not_reached();
 }
 
 static void mps2tz_an505_class_init(ObjectClass *oc, void *data)
@@ -835,6 +853,7 @@ static void mps2tz_an505_class_init(ObjectClass *oc, void *data)
     mmc->numirq = 92;
     mmc->raminfo = an505_raminfo;
     mmc->armsse_type = TYPE_IOTKIT;
+    mps2tz_set_default_ram_info(mmc);
 }
 
 static void mps2tz_an521_class_init(ObjectClass *oc, void *data)
@@ -857,6 +876,7 @@ static void mps2tz_an521_class_init(ObjectClass *oc, void *data)
     mmc->numirq = 92;
     mmc->raminfo = an505_raminfo; /* AN521 is the same as AN505 here */
     mmc->armsse_type = TYPE_SSE200;
+    mps2tz_set_default_ram_info(mmc);
 }
 
 static const TypeInfo mps2tz_info = {
-- 
2.20.1