From bb907ab51fd04255923b7ecf9dab352078808351 Mon Sep 17 00:00:00 2001 From: Richard Retanubun Date: Mon, 26 Oct 2009 14:19:17 -0400 Subject: [PATCH] MCF5271-only: 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). Tested only on MCF5271, can be expanded if needed. Based on Mike Frysinger's suggestion on: http://article.gmane.org/gmane.comp.boot-loaders.u-boot/70304 Signed-off-by: Richard Retanubun --- cpu/mcf52x2/cpu.c | 6 ++++++ cpu/mcf52x2/cpu.h | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) create mode 100644 cpu/mcf52x2/cpu.h diff --git a/cpu/mcf52x2/cpu.c b/cpu/mcf52x2/cpu.c index 2cfe6311d0..c4c5d50604 100644 --- a/cpu/mcf52x2/cpu.c +++ b/cpu/mcf52x2/cpu.c @@ -33,6 +33,7 @@ #include #include #include +#include "cpu.h" DECLARE_GLOBAL_DATA_PTR; @@ -143,6 +144,11 @@ int checkcpu(void) int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[]) { + /* Call the board specific reset actions first. */ + if(board_reset) { + board_reset(); + } + mbar_writeByte(MCF_RCM_RCR, MCF_RCM_RCR_SOFTRST | MCF_RCM_RCR_FRCRSTOUT); return 0; diff --git a/cpu/mcf52x2/cpu.h b/cpu/mcf52x2/cpu.h new file mode 100644 index 0000000000..c1227eb1ce --- /dev/null +++ b/cpu/mcf52x2/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 + +/* Use this to create board specific reset functions */ +void board_reset(void) __attribute__((__weak__)); + +#endif /* _CPU_H_ */ -- 2.25.1