ARM: OMAP4: Move TEXT_BASE down to non-HS limit

With the current scenario SPL size is being overlapped with the public
stack and not allowing any OMAP4 device to boot. So the suggestion came
up was to move the TEXT_BASE down to non-HS limit. Fixing the same and
also moving the SRAM_SCRATCH_SPACE_ADDR up to the end of image
downloadable area.
Discussion on this can be seen here:
https://www.mail-archive.com/u-boot@lists.denx.de/msg127147.html

Tested on OMAP4460 PANDA.

Reported-by: Chao Xu <caesarxuchao@gmail.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

arch/arm/include/asm/arch-omap4/omap.h

@@ -116,7 +116,7 @@ struct s32ktimer {
  */
 #define NON_SECURE_SRAM_START	0x40304000
 #define NON_SECURE_SRAM_END	0x4030E000	/* Not inclusive */
-#define SRAM_SCRATCH_SPACE_ADDR	NON_SECURE_SRAM_START
+#define SRAM_SCRATCH_SPACE_ADDR	0x4030C000
 /* base address for indirect vectors (internal boot mode) */
 #define SRAM_ROM_VECT_BASE	0x4030D000
 

include/configs/omap4_common.h

@@ -148,9 +148,14 @@
 		"fi; " \
 	"fi"
 
-/* Defines for SPL */
-#define CONFIG_SPL_TEXT_BASE		0x40304350
-#define CONFIG_SPL_MAX_SIZE		(38 * 1024)
+/*
+ * Defines for SPL
+ * It is known that this will break HS devices. Since the current size of
+ * SPL is overlapped with public stack and breaking non HS devices to boot.
+ * So moving TEXT_BASE down to non-HS limit.
+ */
+#define CONFIG_SPL_TEXT_BASE		0x40300000
+#define CONFIG_SPL_MAX_SIZE		(0x4030C000 - CONFIG_SPL_TEXT_BASE)
 #define CONFIG_SPL_DISPLAY_PRINT
 #define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/omap-common/u-boot-spl.lds"