[PATCH v4 05/14] ARM: at91: implement SAM9_ENTRY_FUNCTION

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

An On-chip SRAM is available at address 0x00300000 on all SAM9x
variants, so let's define a macro that sets up the stack to grow
down from its end. This will be useful for first stage barebox running
without previously setup stack.

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 include/mach/at91/barebox-arm.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/mach/at91/barebox-arm.h b/include/mach/at91/barebox-arm.h
index f82b82ebed8b..652fd283a0af 100644
--- a/include/mach/at91/barebox-arm.h
+++ b/include/mach/at91/barebox-arm.h
@@ -6,6 +6,7 @@
 #include <asm/common.h>
 #include <mach/at91/sama5d3.h>
 #include <mach/at91/sama5d4.h>
+#include <mach/at91/at91sam9261.h>
 
 #ifdef CONFIG_AT91_LOAD_BAREBOX_SRAM
 #define AT91_EXV6	".word _barebox_image_size\n"
@@ -68,6 +69,10 @@ static __always_inline void __barebox_at91_head(void)
 #define SAMA5D4_ENTRY_FUNCTION(name, r4)					\
 	SAMA5_ENTRY_FUNCTION(name, SAMA5D4_SRAM_BASE + SAMA5D4_SRAM_SIZE, r4)
 
+#define SAM9_ENTRY_FUNCTION(name)	\
+	ENTRY_FUNCTION_WITHSTACK_HEAD(name, AT91SAM9261_SRAM_BASE + AT91SAM9261_SRAM_SIZE, \
+				      __barebox_at91_head, r0, r1, r2)
+
 #define AT91_ENTRY_FUNCTION(fn, r0, r1, r2)					\
 	ENTRY_FUNCTION_WITHSTACK_HEAD(fn, 0, __barebox_at91_head, r0, r1, r2)
 
-- 
2.39.2