arm: mvebu: Make ECC support configurable on Armada XP

Currently, ECC support is enabled for all Armada XP boards. So the
DDR3 driver tries to configure the controller with ECC support, even
on boards without ECC. This patch makes this ECC optional which now
can be configured on a board-per-board basis.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Cc: Phil Sutter <phil@nwl.cc>

drivers/ddr/marvell/axp/ddr3_axp.h

@@ -33,7 +33,10 @@
 #define SAR1_CPU_CORE_MASK		0x00000018
 #define SAR1_CPU_CORE_OFFSET		3
 
+/* Only enable ECC if the board selects it */
+#ifdef CONFIG_BOARD_ECC_SUPPORT
 #define ECC_SUPPORT
+#endif
 #define NEW_FABRIC_TWSI_ADDR		0x4E
 #ifdef CONFIG_DB_784MP_GP
 #define BUS_WIDTH_ECC_TWSI_ADDR		0x4E

drivers/ddr/marvell/axp/ddr3_axp_config.h

@@ -44,7 +44,12 @@
  * DDR3_TRAINING_DEBUG - Debug prints of internal code
  */
 #define DDR_TARGET_FABRIC			5
+/* Only enable ECC if the board selects it */
+#ifdef CONFIG_BOARD_ECC_SUPPORT
 #define DRAM_ECC				1
+#else
+#define DRAM_ECC				0
+#endif
 
 #ifdef MV_DDR_32BIT
 #define BUS_WIDTH                               32

include/configs/db-mv784mp-gp.h

@@ -146,5 +146,6 @@
 /* Enable DDR support in SPL (DDR3 training from Marvell bin_hdr) */
 #define CONFIG_SYS_MVEBU_DDR_AXP
 #define CONFIG_SPD_EEPROM		0x4e
+#define CONFIG_BOARD_ECC_SUPPORT	/* this board supports ECC */
 
 #endif /* _CONFIG_DB_MV7846MP_GP_H */

include/configs/maxbcm.h

@@ -108,5 +108,6 @@
 /* Enable DDR support in SPL (DDR3 training from Marvell bin_hdr) */
 #define CONFIG_SYS_MVEBU_DDR_AXP
 #define CONFIG_DDR_FIXED_SIZE		(1 << 20)	/* 1GiB */
+#define CONFIG_BOARD_ECC_SUPPORT	/* this board supports ECC */
 
 #endif /* _CONFIG_DB_MV7846MP_GP_H */