[U-Boot] [RFC PATCH 07/11] sunxi: A64: move SPL stack to end of SRAM A2

[Andre Przywara]

The SPL stack is usually located at the end of SRAM A1, where it grows
towards the end of the SPL.
For the really big AArch64 binaries the stack overwrites code pretty
soon, so move the SPL stack to the end of SRAM A2, which is unused at this
time.

Signed-off-by: Andre Przywara <andre.przywara at arm.com>
---
 include/configs/sunxi-common.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index d58e5ba..28878a5 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -203,10 +203,14 @@
 
 #define CONFIG_SPL_PAD_TO		32768		/* decimal for 'dd' */
 
-#if defined(CONFIG_MACH_SUN9I) || defined(CONFIG_MACH_SUN50I)
+#if defined(CONFIG_MACH_SUN9I)
 /* FIXME: 40 KiB instead of 32 KiB ? */
 #define LOW_LEVEL_SRAM_STACK		0x00018000
 #define CONFIG_SPL_STACK		LOW_LEVEL_SRAM_STACK
+#elif defined(CONFIG_MACH_SUN50I)
+/* end of SRAM A2 for now, as SRAM A1 is pretty tight */
+#define LOW_LEVEL_SRAM_STACK		0x00054000
+#define CONFIG_SPL_STACK		LOW_LEVEL_SRAM_STACK
 #else
 /* end of 32 KiB in sram */
 #define LOW_LEVEL_SRAM_STACK		0x00008000 /* End of sram */
-- 
2.8.2