From 8875833a86e567c0ca4258353116294089d24625 Mon Sep 17 00:00:00 2001
From: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Date: Fri, 4 Nov 2011 14:38:08 +0200
Subject: nios2: add flush_dcache_range function

exposes functionality to flush dcache according to
the common.h API

Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>

diff --git a/arch/nios2/lib/cache.S b/arch/nios2/lib/cache.S
index ee3b4b7..b952d0c 100644
--- a/arch/nios2/lib/cache.S
+++ b/arch/nios2/lib/cache.S
@@ -48,6 +48,16 @@ flush_icache:
 	bltu	r4, r5, 1b
 	ret
 
+	.global flush_dcache_range
+
+flush_dcache_range:
+	movhi	r8, %hi(CONFIG_SYS_DCACHELINE_SIZE)
+	ori	r8, r8, %lo(CONFIG_SYS_DCACHELINE_SIZE)
+0:	flushd	0(r4)
+	add	r4, r4, r8
+	bltu	r4, r5, 0b
+	ret
+
 	.global flush_cache
 
 flush_cache:
-- 
cgit v0.10.2


From 7bd7b31574518bf9c7b3c83ef2831e27abb6b14e Mon Sep 17 00:00:00 2001
From: Alex Hornung <alex@alexhornung.com>
Date: Mon, 20 Feb 2012 07:34:48 +0000
Subject: nios2: implement get_ticks and get_tbclk

 * Copy over Blackfin's get_ticks and get_tbclk - they work just fine on
   Nios2.

Signed-off-by: Alex Hornung <alex@alexhornung.com>
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>

diff --git a/arch/nios2/cpu/interrupts.c b/arch/nios2/cpu/interrupts.c
index 0a97fa6..2ce689f 100644
--- a/arch/nios2/cpu/interrupts.c
+++ b/arch/nios2/cpu/interrupts.c
@@ -98,6 +98,27 @@ ulong get_timer (ulong base)
 	return (timestamp - base);
 }
 
+/*
+ * This function is derived from Blackfin code (read timebase as long long).
+ * On Nios2 it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+	return get_timer(0);
+}
+
+/*
+ * This function is derived from Blackfin code.
+ * On Nios2 it returns the number of timer ticks per second.
+ */
+ulong get_tbclk(void)
+{
+	ulong tbclk;
+
+	tbclk = CONFIG_SYS_HZ;
+	return tbclk;
+}
+
 /* The board must handle this interrupt if a timer is not
  * provided.
  */
-- 
cgit v0.10.2


From bb60db634c26d609b289e114f44cc2c94ee64c4f Mon Sep 17 00:00:00 2001
From: Alex Hornung <alex@alexhornung.com>
Date: Mon, 20 Feb 2012 23:45:45 +0000
Subject: nios2 - adjust gbl data off to account for bd_info

 * Adjust the GBL_DATA_OFFSET to account for the fact that we'll be
   using the space between that offset and the start of the malloc
   region to allocate both a gd structure and a board info structure.

 * This fixes a memory corruption bug due to overlap of the malloc
   region and the bd_info structure.

Signed-off-by: Alex Hornung <alex@alexhornung.com>
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>

diff --git a/include/configs/nios2-generic.h b/include/configs/nios2-generic.h
index 9ba35e8..17017a5 100644
--- a/include/configs/nios2-generic.h
+++ b/include/configs/nios2-generic.h
@@ -131,7 +131,8 @@
 #define CONFIG_SYS_MALLOC_BASE		(CONFIG_SYS_MONITOR_BASE - \
 					 CONFIG_SYS_MALLOC_LEN)
 #define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_MALLOC_BASE - \
-					 GENERATED_GBL_DATA_SIZE)
+					 GENERATED_GBL_DATA_SIZE - \
+					 GENERATED_BD_INFO_SIZE)
 #define CONFIG_SYS_INIT_SP		CONFIG_SYS_GBL_DATA_OFFSET
 
 /*
-- 
cgit v0.10.2