Zynq MPSoC supports external DDR RAM. Add a RAM at 0 to the model. Signed-off-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com> --- changed since v1: Add ram size clamps and warnings
hw/arm/xlnx-ep108.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/hw/arm/xlnx-ep108.c b/hw/arm/xlnx-ep108.c index eec3e94..6042cbc 100644 --- a/hw/arm/xlnx-ep108.c +++ b/hw/arm/xlnx-ep108.c @@ -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 = { -- 2.3.1.2.g90df61e.dirty