@@ -18,11 +18,16 @@
#include "hw/arm/xlnx-zynqmp.h"
#include "hw/boards.h"
#include "qemu/error-report.h"
+#include "exec/address-spaces.h"
typedef struct XlnxEP108 {
XlnxZynqMPState soc;
+ MemoryRegion ddr_ram;
} XlnxEP108;
+/* Max 2GB RAM */
+#define EP108_MAX_RAM_SIZE 0x80000000ull
+
static void xlnx_ep108_init(MachineState *machine)
{
XlnxEP108 *s = g_new0(XlnxEP108, 1);
@@ -36,6 +41,22 @@ static void xlnx_ep108_init(MachineState *machine)
error_report("%s", error_get_pretty(err));
exit(1);
}
+
+ if (machine->ram_size > EP108_MAX_RAM_SIZE) {
+ error_report("WARNING: RAM size " RAM_ADDR_FMT " above max supported, "
+ "reduced to %llx", machine->ram_size, EP108_MAX_RAM_SIZE);
+ machine->ram_size = EP108_MAX_RAM_SIZE;
+ }
+
+ if (machine->ram_size <= 0x08000000) {
+ error_report("WARNING: RAM size " RAM_ADDR_FMT " is small for EP108\n",
+ machine->ram_size);
+ }
+
+ memory_region_init_ram(&s->ddr_ram, NULL, "ddr-ram", machine->ram_size,
+ &error_abort);
+ vmstate_register_ram_global(&s->ddr_ram);
+ memory_region_add_subregion(get_system_memory(), 0, &s->ddr_ram);
}
static QEMUMachine xlnx_ep108_machine = {
Zynq MPSoC supports external DDR RAM. Add a RAM at 0 to the model. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> --- changed since v1: Add ram size clamps and warnings hw/arm/xlnx-ep108.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)