zynqmp: Introduce zynqmp_get_bootmode

Provide a function to retrieve the bootmode.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/plat/xilinx/zynqmp/zynqmp_def.h b/plat/xilinx/zynqmp/zynqmp_def.h
index 504517d..9496ec4 100644
--- a/plat/xilinx/zynqmp/zynqmp_def.h
+++ b/plat/xilinx/zynqmp/zynqmp_def.h
@@ -63,6 +63,7 @@
 #define CRL_APB_BASE			0xFF5E0000
 #define CRL_APB_RPLL_CTRL		(CRL_APB_BASE + 0x30)
 #define CRL_APB_TIMESTAMP_REF_CTRL	(CRL_APB_BASE + 0x128)
+#define CRL_APB_BOOT_MODE_USER		(CRL_APB_BASE + 0x200)
 #define CRL_APB_RESET_CTRL		(CRL_APB_BASE + 0x218)
 
 #define CRL_APB_TIMESTAMP_REF_CTRL_CLKACT_BIT	(1 << 24)
@@ -71,6 +72,9 @@
 
 #define CRL_APB_RESET_CTRL_SOFT_RESET	(1 << 4)
 
+#define CRL_APB_BOOT_MODE_MASK		(0xf << 0)
+#define ZYNQMP_BOOTMODE_JTAG		0
+
 /* system counter registers and bitfields */
 #define IOU_SCNTRS_BASE			0xFF260000
 #define IOU_SCNTRS_CONTROL		(IOU_SCNTRS_BASE + 0)