[U-Boot] PATCH Nios2 kernel bootstrap error due to missing processor data cache flush: fix

[Renato Andreola]

 From b75bd27f89ac6c105cebb6507cf082b6f5fffc7d Mon Sep 17 00:00:00 2001
From: Renato Andreola <renato.andreola at imagos.it>
Date: Fri, 10 Apr 2009 12:32:29 +0200
Subject:     Nios2: do_boom_linux(): kernel gunzip input data integrity 
problem due to mi
 ssing cache flush

    Added instruction and data caches flush

    Signed-off-by: Renato Andreola <renato.andreola at imagos.it>
---
 lib_nios2/bootm.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/lib_nios2/bootm.c b/lib_nios2/bootm.c
index 53fd569..1e8034b 100644
--- a/lib_nios2/bootm.c
+++ b/lib_nios2/bootm.c
@@ -2,6 +2,9 @@
  * (C) Copyright 2003, Psyent Corporation <www.psyent.com>
  * Scott McNutt <smcnutt at psyent.com>
  *
+ * (C) Copyright 2009, Imagos sas <www.imagos.it>
+ * Renato Andreola <renato.andreola at imagos.it>
+ *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
@@ -24,6 +27,7 @@
 #include <common.h>
 #include <command.h>
 #include <asm/byteorder.h>
+#include <asm/cache.h>
 
 int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t 
*images)
 {
@@ -31,7 +35,9 @@ int do_bootm_linux(int flag, int argc, char *argv[], 
bootm_headers_t *images)
 
     if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
         return 1;
-
+    /* flushes data and instruction caches before calling the kernel */
+    flush_dcache (0,CONFIG_SYS_DCACHE_SIZE );
+    flush_icache (0,CONFIG_SYS_ICACHE_SIZE);
     /* For now we assume the Microtronix linux ... which only
      * needs to be called ;-)
      */
-- 
1.5.5