arm: socfpga: spl: add sdram init and calibration

Add a call to checkboard along with sdram intilialization and calibration.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>

arch/arm/cpu/armv7/socfpga/spl.c

@@ -15,6 +15,7 @@
 #include <asm/arch/freeze_controller.h>
 #include <asm/arch/clock_manager.h>
 #include <asm/arch/scan_manager.h>
+#include <asm/arch/sdram.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -174,4 +175,16 @@ void spl_board_init(void)
 
 	/* enable console uart printing */
 	preloader_console_init();
+
+	if (sdram_mmr_init_full(0xffffffff) != 0) {
+		puts("SDRAM init failed.\n");
+		hang();
+	}
+
+	debug("SDRAM: Calibrating PHY\n");
+	/* SDRAM calibration */
+	if (sdram_calibration_full() == 0) {
+		puts("SDRAM calibration failed.\n");
+		hang();
+	}
 }