[PATCH 02/10] ARM: Layerscape: LS1028a: reserve DDR region for TF-A

[Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>]

On LS1028a the TF-A is placed in DDR, so we have to reserve the region
in order to keep Linux away from it.

Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
 arch/arm/mach-layerscape/soc.c       | 2 ++
 drivers/mci/imx-esdhc-pbl.c          | 3 ++-
 include/mach/layerscape/layerscape.h | 8 ++++++++
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-layerscape/soc.c b/arch/arm/mach-layerscape/soc.c
index 4d4ef05d4b..5f9d0d5171 100644
--- a/arch/arm/mach-layerscape/soc.c
+++ b/arch/arm/mach-layerscape/soc.c
@@ -91,6 +91,8 @@ static int ls1028a_init(void)
 
 	layerscape_register_pbl_image_handler();
 
+	reserve_sdram_region("tfa", LS1028A_TFA_RESERVED_START, LS1028A_TFA_RESERVED_SIZE);
+
 	return 0;
 }
 
diff --git a/drivers/mci/imx-esdhc-pbl.c b/drivers/mci/imx-esdhc-pbl.c
index 2c74d101e4..2d071eaca8 100644
--- a/drivers/mci/imx-esdhc-pbl.c
+++ b/drivers/mci/imx-esdhc-pbl.c
@@ -21,6 +21,7 @@
 #endif
 #ifdef CONFIG_ARCH_LAYERSCAPE
 #include <mach/layerscape/xload.h>
+#include <mach/layerscape/layerscape.h>
 #endif
 #include "sdhci.h"
 #include "imx-esdhc.h"
@@ -387,7 +388,7 @@ static int ls1028a_esdhc_start_image(void __iomem *base, struct dram_regions_inf
 		.socdata = &data,
 	};
 	void *sdram = (void *)0x80000000;
-	void (*bl31)(void) = (void *)0xfbe00000;
+	void (*bl31)(void) = (void *)LS1028A_TFA_RESERVED_START;
 	size_t bl31_size;
 	void *bl31_image;
 	struct bl2_to_bl31_params_mem_v2 *params;
diff --git a/include/mach/layerscape/layerscape.h b/include/mach/layerscape/layerscape.h
index a048b7ef9e..6f420dd4f4 100644
--- a/include/mach/layerscape/layerscape.h
+++ b/include/mach/layerscape/layerscape.h
@@ -3,6 +3,8 @@
 #ifndef __MACH_LAYERSCAPE_H
 #define __MACH_LAYERSCAPE_H
 
+#include <linux/sizes.h>
+
 #define LS1046A_DDR_SDRAM_BASE		0x80000000
 #define LS1046A_DDR_FREQ		2100000000
 
@@ -16,6 +18,12 @@
 #define LS1028A_SP_SHARED_DRAM_SIZE	SZ_2M
 #define LS1028A_TZC400_BASE		0x01100000
 
+#define LS1028A_TFA_SIZE		SZ_64M
+#define LS1028A_TFA_SHRD		SZ_2M
+#define LS1028A_TFA_RESERVED_SIZE	(LS1028A_TFA_SIZE + LS1028A_TFA_SHRD)
+#define LS1028A_TFA_RESERVED_START	(0x100000000 - LS1028A_TFA_RESERVED_SIZE)
+#define LS1028A_TFA_START		(0x100000000 - LS1028A_TFA_SIZE)
+
 enum bootsource ls1046a_bootsource_get(void);
 enum bootsource ls1021a_bootsource_get(void);
 
-- 
2.39.2