NV_PEXTDEV_BOOT_0
sim_data.memory_width = (nvif_rd32(device, NV_PEXTDEV_BOOT_0) & 0x10) ? 128 : 64;
if (nvif_rd32(device, NV_PEXTDEV_BOOT_0) & NV_PEXTDEV_BOOT_0_STRAP_FP_IFACE_12BIT)
return (nvif_rd32(device, NV_PEXTDEV_BOOT_0) >> 24) & 0xf;
return (nvif_rd32(device, NV_PEXTDEV_BOOT_0) >> 16) & 0xf;