From d17e1cd93384d56886be7e67cf2b31e97118d811 Mon Sep 17 00:00:00 2001
From: oharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Thu, 28 Feb 2008 08:25:46 +0000
Subject: eCos flash driver.

git-svn-id: svn://svn.berlios.de/openocd/trunk@365 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
 ecosflash/flash.S | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 ecosflash/flash.S

(limited to 'ecosflash/flash.S')

diff --git a/ecosflash/flash.S b/ecosflash/flash.S
new file mode 100644
index 00000000..dc30d163
--- /dev/null
+++ b/ecosflash/flash.S
@@ -0,0 +1,58 @@
+/*
+	Jump table for flash driver
+	
+	Registers in ARM callling convention is to place args in registers 
+	starting at r0.
+	
+	So for:
+	
+	void foo(int a, int b, int c).
+	
+	a=r0
+	b=r1
+	c=r2
+	
+	
+*/
+	.global _stack_base
+	.global _stack_start
+	.global _workarea
+	.global _start
+	.global _start_bss_clear
+_start:
+	// offset=0
+	// int erase(void *address, int len)
+	ldr     sp,=_stack_start                
+	bl erase
+	nop // Stop CPU here using hw breakpoint
+	
+	// offset=0xc
+	// int program(void *buffer, void *address, int len)	
+	ldr     sp,=_stack_start              
+	bl program
+	nop // Stop CPU here using hw breakpoint
+	
+	// offset=0x18
+	ldr     r0,=_workarea                
+	nop // Stop CPU here using hw breakpoint
+	
+	// offset=0x20
+	// int init() - returns error message if the flash chip can't be detected	
+	ldr     sp,=_stack_start              
+	bl init
+	nop // Stop CPU here using hw breakpoint
+
+    .section ".bss"
+    .balign 4
+_stack_base:
+        .rept 4096
+        .byte 0
+        .endr
+_stack_start:
+    .balign 4
+_workarea:
+        .rept 8192
+        .byte 0
+        .endr
+	// NB!!! we clear bss while the stack is in use, so we start BSS clearing here !!! :-)
+_start_bss_clear:
-- 
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