[U-Boot] [PATCH] 83xx: Added a weak board_reset function to allow custom reset.
Richard Retanubun
RichardRetanubun at RuggedCom.com
Mon Oct 26 19:43:24 CET 2009
From 2b9f89f5d0538e44ebbe66236cd9b6be4ee902e3 Mon Sep 17 00:00:00 2001
From: Richard Retanubun <RichardRetanubun at RuggedCom.com>
Date: Mon, 26 Oct 2009 14:16:03 -0400
Subject: [PATCH] Added a weak board_reset function to allow custom reset.
This patch adds a board_reset function to allow boards to specify
their own custom reset sequence (e.g. resetting by timing out watchdog).
Signed-off-by: Richard Retanubun <RichardRetanubun at RuggedCom.com>
---
Based on Mike Frysinger's suggestion on:
http://article.gmane.org/gmane.comp.boot-loaders.u-boot/70304
cpu/mpc83xx/cpu.c | 6 ++++++
cpu/mpc83xx/cpu.h | 33 +++++++++++++++++++++++++++++++++
2 files changed, 39 insertions(+), 0 deletions(-)
create mode 100644 cpu/mpc83xx/cpu.h
diff --git a/cpu/mpc83xx/cpu.c b/cpu/mpc83xx/cpu.c
index e38a372..ebda4b0 100644
--- a/cpu/mpc83xx/cpu.c
+++ b/cpu/mpc83xx/cpu.c
@@ -39,6 +39,7 @@
#include <asm/immap_qe.h>
#include <asm/io.h>
#endif
+#include "cpu.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -199,6 +200,11 @@ do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+ /* Call the board specific reset actions first. */
+ if(board_reset) {
+ board_reset();
+ }
+
#ifdef MPC83xx_RESET
/* Interrupts and MMU off */
__asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
diff --git a/cpu/mpc83xx/cpu.h b/cpu/mpc83xx/cpu.h
new file mode 100644
index 0000000..c1227eb
--- /dev/null
+++ b/cpu/mpc83xx/cpu.h
@@ -0,0 +1,33 @@
+/*
+ * cpu.h
+ *
+ * Copyright (c) 2009 Freescale Semiconductor, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef _CPU_H_
+#define _CPU_H_
+
+#include <command.h>
+
+/* Use this to create board specific reset functions */
+void board_reset(void) __attribute__((__weak__));
+
+#endif /* _CPU_H_ */
--
1.6.2.4
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