[U-Boot] [PATCH] armv8/ls1043aqds: Add support for >2GB memory

[shh.xie at gmail.com]

From: Shaohui Xie <Shaohui.Xie at freescale.com>

This patch also exposes the complete DDR region(s) to Linux.

Signed-off-by: Shaohui Xie <Shaohui.Xie at freescale.com>
---
 board/freescale/ls1043aqds/ddr.c        | 19 ++++++++++++++++---
 board/freescale/ls1043aqds/ls1043aqds.c | 10 ++++++++++
 include/configs/ls1043aqds.h            |  2 +-
 3 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/board/freescale/ls1043aqds/ddr.c b/board/freescale/ls1043aqds/ddr.c
index 42d9068..3d3c533 100644
--- a/board/freescale/ls1043aqds/ddr.c
+++ b/board/freescale/ls1043aqds/ddr.c
@@ -132,9 +132,22 @@ void dram_init_banksize(void)
 	 * The address needs to add the offset of its bank.
 	 */
 	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
-	gd->bd->bi_dram[0].size = gd->ram_size;
+	if (gd->ram_size > CONFIG_SYS_DDR_BLOCK1_SIZE) {
+		gd->bd->bi_dram[0].size = CONFIG_SYS_DDR_BLOCK1_SIZE;
+		gd->bd->bi_dram[1].start = CONFIG_SYS_DDR_BLOCK2_BASE;
+		gd->bd->bi_dram[1].size = gd->ram_size -
+					  CONFIG_SYS_DDR_BLOCK1_SIZE;
 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
-	gd->secure_ram = gd->bd->bi_dram[0].start + gd->secure_ram;
-	gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+		gd->secure_ram = gd->bd->bi_dram[1].start +
+				 gd->secure_ram -
+				 CONFIG_SYS_DDR_BLOCK1_SIZE;
+		gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
 #endif
+	} else {
+		gd->bd->bi_dram[0].size = gd->ram_size;
+#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
+		gd->secure_ram = gd->bd->bi_dram[0].start + gd->secure_ram;
+		gd->secure_ram |= MEM_RESERVE_SECURE_MAINTAINED;
+#endif
+	}
 }
diff --git a/board/freescale/ls1043aqds/ls1043aqds.c b/board/freescale/ls1043aqds/ls1043aqds.c
index d6696ca..576fa46 100644
--- a/board/freescale/ls1043aqds/ls1043aqds.c
+++ b/board/freescale/ls1043aqds/ls1043aqds.c
@@ -303,6 +303,16 @@ int board_init(void)
 #ifdef CONFIG_OF_BOARD_SETUP
 int ft_board_setup(void *blob, bd_t *bd)
 {
+	u64 base[CONFIG_NR_DRAM_BANKS];
+	u64 size[CONFIG_NR_DRAM_BANKS];
+
+	/* fixup DT for the two DDR banks */
+	base[0] = gd->bd->bi_dram[0].start;
+	size[0] = gd->bd->bi_dram[0].size;
+	base[1] = gd->bd->bi_dram[1].start;
+	size[1] = gd->bd->bi_dram[1].size;
+
+	fdt_fixup_memory_banks(blob, base, size, 2);
 	ft_cpu_setup(blob, bd);
 
 #ifdef CONFIG_SYS_DPAA_FMAN
diff --git a/include/configs/ls1043aqds.h b/include/configs/ls1043aqds.h
index 398f1c3..02247b3 100644
--- a/include/configs/ls1043aqds.h
+++ b/include/configs/ls1043aqds.h
@@ -33,7 +33,7 @@ unsigned long get_board_ddr_clk(void);
 #define CONFIG_DIMM_SLOTS_PER_CTLR	1
 /* Physical Memory Map */
 #define CONFIG_CHIP_SELECTS_PER_CTRL	4
-#define CONFIG_NR_DRAM_BANKS		1
+#define CONFIG_NR_DRAM_BANKS		2
 
 #define CONFIG_DDR_SPD
 #define SPD_EEPROM_ADDRESS		0x51
-- 
2.1.0.27.g96db324