[PULL 13/25] ppc/pegasos2: Restrict memory to 2 gigabytes

[David Gibson]

From: BALATON Zoltan <balaton@eik.bme.hu>

The CHRP spec this board confirms to only allows 2 GiB of system
memory below 4 GiB as the high 2 GiB is allocated to IO and system
resources. To avoid problems with memory overlapping these areas
restrict RAM to 2 GiB similar to mac_newworld.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: 
<54f58229a69c9c1cca21bcecad700b3d7052edd5.1634241019.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/pegasos2.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/ppc/pegasos2.c b/hw/ppc/pegasos2.c
index b8ce859f1a..474cfdeabf 100644
--- a/hw/ppc/pegasos2.c
+++ b/hw/ppc/pegasos2.c
@@ -117,6 +117,10 @@ static void pegasos2_init(MachineState *machine)
     qemu_register_reset(pegasos2_cpu_reset, pm->cpu);
 
     /* RAM */
+    if (machine->ram_size > 2 * GiB) {
+        error_report("RAM size more than 2 GiB is not supported");
+        exit(1);
+    }
     memory_region_add_subregion(get_system_memory(), 0, machine->ram);
 
     /* allocate and load firmware */
-- 
2.31.1