[U-Boot] [PATCH 6/7] ARM: hisilicon: hikey: Align memory node with upstream kernel

[Peter Griffin]

The memory node gets automatically generated by U-Boot
in arch_fixup_fdt(), before passing control to the kernel
using U-Boots representation of the dram banks.

However the upstream kernel uses the memory node to carve-out
regions of RAM for various purposes. To make this work without
changing arch_fixup_fdt() which will effect many platforms
we replicate the upstream memory node layout using the dram
banks.

Signed-off-by: Peter Griffin <peter.griffin at linaro.org>
---
 board/hisilicon/hikey/hikey.c | 30 +++++++++++++++++++++++++++++-
 include/configs/hikey.h       |  2 +-
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/board/hisilicon/hikey/hikey.c b/board/hisilicon/hikey/hikey.c
index 752ee6f..7abc678 100644
--- a/board/hisilicon/hikey/hikey.c
+++ b/board/hisilicon/hikey/hikey.c
@@ -410,8 +410,36 @@ int dram_init(void)
 
 void dram_init_banksize(void)
 {
+	/*
+	 * Reserve regions below from DT memory node (which gets generated
+	 * by U-Boot from the dram banks in arch_fixup_fdt() before booting
+	 * the kernel. This will then match the kernel hikey dts memory node.
+	 *
+	 *  0x05e0,0000 - 0x05ef,ffff: MCU firmware runtime using
+	 *  0x05f0,1000 - 0x05f0,1fff: Reboot reason
+	 *  0x06df,f000 - 0x06df,ffff: Mailbox message data
+	 *  0x0740,f000 - 0x0740,ffff: MCU firmware section
+	 *  0x21f0,0000 - 0x21ff,ffff: pstore/ramoops buffer
+	 *  0x3e00,0000 - 0x3fff,ffff: OP-TEE
+	*/
+
 	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
-	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+	gd->bd->bi_dram[0].size = 0x05e00000;
+
+	gd->bd->bi_dram[1].start = 0x05f00000;
+	gd->bd->bi_dram[1].size = 0x00001000;
+
+	gd->bd->bi_dram[2].start = 0x05f02000;
+	gd->bd->bi_dram[2].size = 0x00efd000;
+
+	gd->bd->bi_dram[3].start = 0x06e00000;
+	gd->bd->bi_dram[3].size = 0x0060f000;
+
+	gd->bd->bi_dram[4].start = 0x07410000;
+	gd->bd->bi_dram[4].size = 0x1aaf0000;
+
+	gd->bd->bi_dram[5].start = 0x22000000;
+	gd->bd->bi_dram[5].size = 0x1c000000;
 }
 
 void reset_cpu(ulong addr)
diff --git a/include/configs/hikey.h b/include/configs/hikey.h
index 0851626..69ea7dc 100644
--- a/include/configs/hikey.h
+++ b/include/configs/hikey.h
@@ -33,7 +33,7 @@
 /* CONFIG_SYS_TEXT_BASE needs to align with where ATF loads bl33.bin */
 #define CONFIG_SYS_TEXT_BASE		0x35000000
 
-#define CONFIG_NR_DRAM_BANKS		1
+#define CONFIG_NR_DRAM_BANKS		6
 #define PHYS_SDRAM_1			0x00000000
 
 /* 1008 MB (the last 16Mb are secured for TrustZone by ATF*/
-- 
1.9.1