feat(imx8m): add dram retention flow for imx8m family

Add the dram retention flow for i.MX8M SoC family.

Change-Id: Ifb8ba5b2f6f002133cf47c07fef73df29c51c890
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
diff --git a/plat/imx/imx8m/imx8mp/imx8mp_bl31_setup.c b/plat/imx/imx8m/imx8mp/imx8mp_bl31_setup.c
index 57e5c51..d443c3d 100644
--- a/plat/imx/imx8m/imx8mp/imx8mp_bl31_setup.c
+++ b/plat/imx/imx8m/imx8mp/imx8mp_bl31_setup.c
@@ -19,6 +19,7 @@
 #include <lib/xlat_tables/xlat_tables_v2.h>
 #include <plat/common/platform.h>
 
+#include <dram.h>
 #include <gpc.h>
 #include <imx_aipstz.h>
 #include <imx_uart.h>
@@ -203,6 +204,9 @@
 	/* select the CKIL source to 32K OSC */
 	mmio_write_32(IMX_ANAMIX_BASE + ANAMIX_MISC_CTL, 0x1);
 
+	/* Init the dram info */
+	dram_info_init(SAVED_DRAM_TIMING_BASE);
+
 	plat_gic_driver_init();
 	plat_gic_init();
 
diff --git a/plat/imx/imx8m/imx8mp/platform.mk b/plat/imx/imx8m/imx8mp/platform.mk
index 73fbd87..ded31ca 100644
--- a/plat/imx/imx8m/imx8mp/platform.mk
+++ b/plat/imx/imx8m/imx8mp/platform.mk
@@ -15,6 +15,9 @@
 # Include GICv3 driver files
 include drivers/arm/gic/v3/gicv3.mk
 
+IMX_DRAM_SOURCES	:=	plat/imx/imx8m/ddr/dram.c		\
+				plat/imx/imx8m/ddr/dram_retention.c
+
 IMX_GIC_SOURCES		:=	${GICV3_SOURCES}			\
 				plat/common/plat_gicv3.c		\
 				plat/common/plat_psci_common.c		\
@@ -38,6 +41,7 @@
 				drivers/arm/tzc/tzc380.c			\
 				drivers/delay_timer/delay_timer.c		\
 				drivers/delay_timer/generic_delay_timer.c	\
+				${IMX_DRAM_SOURCES}				\
 				${IMX_GIC_SOURCES}				\
 				${XLAT_TABLES_LIB_SRCS}