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arm: xlnx-ep108: Add external RAM 

Zynq MPSoC supports external DDR RAM. Add a RAM at 0 to the model.

Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Tested-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 2c25e2a4198402a6477aef2975d5df7c415dd341.1431381507.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Crosthwaite 2015-05-14 19:23:27 -07:00 committed by Peter Maydell
parent 859a0c5b5f
commit b79b9d28f6
1 changed files with 20 additions and 0 deletions
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20
hw/arm/xlnx-ep108.c
View File

@ -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);
@ -37,6 +42,21 @@ 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) {
qemu_log("WARNING: RAM size " RAM_ADDR_FMT " is small for EP108",
machine->ram_size);
}
memory_region_allocate_system_memory(&s->ddr_ram, NULL, "ddr-ram",
machine->ram_size);
memory_region_add_subregion(get_system_memory(), 0, &s->ddr_ram);
}
static QEMUMachine xlnx_ep108_machine = {