[U-Boot-Users] [PATCH] API: Provide syscall entry point implementation for the ARM architecture.

[Rafal Jaworowski]

(Tested on ARM920-based EP93xx system)

Signed-off-by: Rafal Czubak <rcz at semihalf.com>
Acked-by: Rafal Jaworowski <raj at semihalf.com>
---
 api_examples/Makefile |    6 +++---
 api_examples/crt0.S   |   17 +++++++++++++++--
 lib_arm/board.c       |    5 +++++
 3 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/api_examples/Makefile b/api_examples/Makefile
index 5666f48..d09f8f8 100644
--- a/api_examples/Makefile
+++ b/api_examples/Makefile
@@ -24,9 +24,9 @@ ifeq ($(ARCH),ppc)
 LOAD_ADDR = 0x40000
 endif
 
-#ifeq ($(ARCH),arm)
-#LOAD_ADDR = 0xc100000
-#endif
+ifeq ($(ARCH),arm)
+LOAD_ADDR = 0x1000000
+endif
 
 include $(TOPDIR)/config.mk
 
diff --git a/api_examples/crt0.S b/api_examples/crt0.S
index 80b7297..a9e2dea 100644
--- a/api_examples/crt0.S
+++ b/api_examples/crt0.S
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2007 Semihalf
+ * (C) Copyright 2007-2008 Semihalf
  *
  * Written by: Rafal Jaworowski <raj at semihalf.com>
  *
@@ -25,7 +25,6 @@
 
 #if defined(CONFIG_PPC)
 	.text
-
 	.globl _start
 _start:
 	/* Store global data ptr as a hint for U-Boot address range */
@@ -41,6 +40,20 @@ syscall:
 	lwz	%r11, 0(%r11)
 	mtctr	%r11
 	bctr
+
+#elif defined(CONFIG_ARM)
+	.text
+	.globl _start
+_start:
+	ldr	ip, =gd_ptr
+	str	r8, [ip]
+	b	main
+
+	.globl syscall
+syscall:
+	ldr	ip, =syscall_ptr
+	ldr	pc, [ip]
+
 #else
 #error No support for this arch!
 #endif
diff --git a/lib_arm/board.c b/lib_arm/board.c
index a093860..c47b52c 100644
--- a/lib_arm/board.c
+++ b/lib_arm/board.c
@@ -431,6 +431,11 @@ void start_armboot (void)
 
 	jumptable_init ();
 
+#if defined(CONFIG_API)
+	/* Initialize API */
+	api_init ();
+#endif
+
 	console_init_r ();	/* fully init console as a device */
 
 #if defined(CONFIG_MISC_INIT_R)
-- 
1.5.2.2