diff options
| -rw-r--r-- | plat/xilinx/zynqmp/aarch64/zynqmp_common.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/plat/xilinx/zynqmp/aarch64/zynqmp_common.c b/plat/xilinx/zynqmp/aarch64/zynqmp_common.c index 60a16058..562cac83 100644 --- a/plat/xilinx/zynqmp/aarch64/zynqmp_common.c +++ b/plat/xilinx/zynqmp/aarch64/zynqmp_common.c @@ -49,11 +49,14 @@ const mmap_region_t plat_arm_mmap[] = { static unsigned int zynqmp_get_silicon_ver(void) { - unsigned int ver; + static unsigned int ver; - ver = mmio_read_32(ZYNQMP_CSU_BASEADDR + ZYNQMP_CSU_VERSION_OFFSET); - ver &= ZYNQMP_SILICON_VER_MASK; - ver >>= ZYNQMP_SILICON_VER_SHIFT; + if (!ver) { + ver = mmio_read_32(ZYNQMP_CSU_BASEADDR + + ZYNQMP_CSU_VERSION_OFFSET); + ver &= ZYNQMP_SILICON_VER_MASK; + ver >>= ZYNQMP_SILICON_VER_SHIFT; + } return ver; } |