Kirkwood: dram_init is moved to dram.c

For all Kirkwood boards so far dram_init function is duplicated
dram_init function is moved to dram.c and relevant code from all
board specific files removed

If any board needs specific dram init handling than standard one,
then, a macro CONFIG_SYS_BOARD_DRAM_INIT should be defined in
board config header file and the dram_init function can be put
in board specific source file
For ex. keymile boards

Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>

arch/arm/cpu/arm926ejs/kirkwood/dram.c

@@ -23,8 +23,11 @@
  */
 
 #include <config.h>
+#include <common.h>
 #include <asm/arch/kirkwood.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #define KW_REG_CPUCS_WIN_BAR(x)		(KW_REGISTER(0x1500) + (x * 0x08))
 #define KW_REG_CPUCS_WIN_SZ(x)		(KW_REGISTER(0x1504) + (x * 0x08))
 /*
@@ -56,3 +59,38 @@ u32 kw_sdram_bs(enum memory_bank bank)
 	result += 0x01000000;
 	return result;
 }
+
+#ifndef CONFIG_SYS_BOARD_DRAM_INIT
+int dram_init(void)
+{
+	int i;
+
+	gd->ram_size = 0;
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		gd->bd->bi_dram[i].start = kw_sdram_bar(i);
+		gd->bd->bi_dram[i].size = kw_sdram_bs(i);
+		/*
+		 * It is assumed that all memory banks are consecutive
+		 * and without gaps.
+		 * If the gap is found, ram_size will be reported for
+		 * consecutive memory only
+		 */
+		if (gd->bd->bi_dram[i].start != gd->ram_size)
+			break;
+
+		gd->ram_size += gd->bd->bi_dram[i].size;
+
+	}
+	return 0;
+}
+
+/*
+ * If this function is not defined here,
+ * board.c alters dram bank zero configuration defined above.
+ */
+void dram_init_banksize(void)
+{
+	dram_init();
+}
+#endif /* CONFIG_SYS_BOARD_DRAM_INIT */
+

board/Marvell/guruplug/guruplug.c

@@ -108,17 +108,6 @@ int board_init(void)
 	return 0;
 }
 
-int dram_init(void)
-{
-	int i;
-
-	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
-		gd->bd->bi_dram[i].start = kw_sdram_bar(i);
-		gd->bd->bi_dram[i].size = kw_sdram_bs(i);
-	}
-	return 0;
-}
-
 #ifdef CONFIG_RESET_PHY_R
 void mv_phy_88e1121_init(char *name)
 {

board/Marvell/mv88f6281gtw_ge/mv88f6281gtw_ge.c

@@ -110,17 +110,6 @@ int board_init(void)
 	return 0;
 }
 
-int dram_init(void)
-{
-	int i;
-
-	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
-		gd->bd->bi_dram[i].start = kw_sdram_bar(i);
-		gd->bd->bi_dram[i].size = kw_sdram_bs(i);
-	}
-	return 0;
-}
-
 #ifdef CONFIG_MV88E61XX_SWITCH
 void reset_phy(void)
 {

board/Marvell/openrd_base/openrd_base.c

@@ -113,17 +113,6 @@ int board_init(void)
 	return 0;
 }
 
-int dram_init(void)
-{
-	int i;
-
-	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
-		gd->bd->bi_dram[i].start = kw_sdram_bar(i);
-		gd->bd->bi_dram[i].size = kw_sdram_bs(i);
-	}
-	return 0;
-}
-
 #ifdef CONFIG_RESET_PHY_R
 /* Configure and enable MV88E1116 PHY */
 void reset_phy(void)

board/Marvell/rd6281a/rd6281a.c

@@ -109,17 +109,6 @@ int board_init(void)
 	return 0;
 }
 
-int dram_init(void)
-{
-	int i;
-
-	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
-		gd->bd->bi_dram[i].start = kw_sdram_bar(i);
-		gd->bd->bi_dram[i].size = kw_sdram_bs(i);
-	}
-	return 0;
-}
-
 void mv_phy_88e1116_init(char *name)
 {
 	u16 reg;

board/Marvell/sheevaplug/sheevaplug.c

@@ -108,17 +108,6 @@ int board_init(void)
 	return 0;
 }
 
-int dram_init(void)
-{
-	int i;
-
-	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
-		gd->bd->bi_dram[i].start = kw_sdram_bar(i);
-		gd->bd->bi_dram[i].size = kw_sdram_bs(i);
-	}
-	return 0;
-}
-
 #ifdef CONFIG_RESET_PHY_R
 /* Configure and enable MV88E1116 PHY */
 void reset_phy(void)

include/configs/keymile-common.h

@@ -85,6 +85,7 @@
 
 #define CONFIG_LOADS_ECHO	1	/* echo on for serial download */
 #define CONFIG_SYS_LOADS_BAUD_CHANGE	1	/* allow baudrate change */
+#define CONFIG_SYS_BOARD_DRAM_INIT	/* Used board specific dram_init */
 
 /*
  * How to get access to the slot ID.  Put this here to make it easy