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mxc: add arch_reset() function
This patch adds arch_reset() function for all mxc platforms. It also removes (unsused) arch/arm/mach-mx2/system.c file. This patch has been tested on i.MX1/27/31/35 Signed-off-by: Ilya Yanok <yanok@emcraft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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parent
05fd8e73e1
commit
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4 changed files with 30 additions and 29 deletions
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@ -4,7 +4,7 @@
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# Object file lists.
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# Object file lists.
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obj-y := system.o generic.o devices.o serial.o
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obj-y := generic.o devices.o serial.o
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obj-$(CONFIG_MACH_MX21) += clock_imx21.o
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obj-$(CONFIG_MACH_MX21) += clock_imx21.o
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@ -3,7 +3,7 @@
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#
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#
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# Common support
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# Common support
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obj-y := irq.o clock.o gpio.o time.o devices.o cpu.o
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obj-y := irq.o clock.o gpio.o time.o devices.o cpu.o system.o
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obj-$(CONFIG_ARCH_MX1) += iomux-mx1-mx2.o dma-mx1-mx2.o
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obj-$(CONFIG_ARCH_MX1) += iomux-mx1-mx2.o dma-mx1-mx2.o
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obj-$(CONFIG_ARCH_MX2) += iomux-mx1-mx2.o dma-mx1-mx2.o
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obj-$(CONFIG_ARCH_MX2) += iomux-mx1-mx2.o dma-mx1-mx2.o
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@ -26,9 +26,6 @@ static inline void arch_idle(void)
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cpu_do_idle();
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cpu_do_idle();
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}
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}
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static inline void arch_reset(char mode, const char *cmd)
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void arch_reset(char mode, const char *cmd);
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{
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cpu_reset(0);
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}
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#endif /* __ASM_ARCH_MXC_SYSTEM_H__ */
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#endif /* __ASM_ARCH_MXC_SYSTEM_H__ */
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@ -3,6 +3,7 @@
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* Copyright (C) 2000 Deep Blue Solutions Ltd
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* Copyright (C) 2000 Deep Blue Solutions Ltd
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* Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
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* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
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* Copyright 2009 Ilya Yanok, Emcraft Systems Ltd, yanok@emcraft.com
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* it under the terms of the GNU General Public License as published by
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@ -22,42 +23,45 @@
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/clk.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/io.h>
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#include <linux/err.h>
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#include <linux/delay.h>
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#include <mach/hardware.h>
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#include <mach/hardware.h>
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#include <asm/proc-fns.h>
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#include <asm/proc-fns.h>
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#include <asm/system.h>
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#include <asm/system.h>
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/*
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#ifdef CONFIG_ARCH_MX1
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* Put the CPU into idle mode. It is called by default_idle()
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#define WDOG_WCR_REG IO_ADDRESS(WDT_BASE_ADDR)
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* in process.c file.
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#define WDOG_WCR_ENABLE (1 << 0)
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*/
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#else
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void arch_idle(void)
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#define WDOG_WCR_REG IO_ADDRESS(WDOG_BASE_ADDR)
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{
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#define WDOG_WCR_ENABLE (1 << 2)
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/*
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#endif
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* This should do all the clock switching
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* and wait for interrupt tricks.
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*/
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cpu_do_idle();
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}
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#define WDOG_WCR_REG IO_ADDRESS(WDOG_BASE_ADDR)
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#define WDOG_WCR_SRS (1 << 4)
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/*
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/*
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* Reset the system. It is called by machine_restart().
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* Reset the system. It is called by machine_restart().
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*/
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*/
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void arch_reset(char mode, const char *cmd)
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void arch_reset(char mode, const char *cmd)
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{
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{
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struct clk *clk;
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if (!cpu_is_mx1()) {
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struct clk *clk;
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clk = clk_get(NULL, "wdog_clk");
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clk = clk_get_sys("imx-wdt.0", NULL);
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if (!clk) {
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if (!IS_ERR(clk))
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printk(KERN_ERR"Cannot activate the watchdog. Giving up\n");
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clk_enable(clk);
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return;
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}
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}
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clk_enable(clk);
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/* Assert SRS signal */
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/* Assert SRS signal */
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__raw_writew(__raw_readw(WDOG_WCR_REG) & ~WDOG_WCR_SRS, WDOG_WCR_REG);
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__raw_writew(WDOG_WCR_ENABLE, WDOG_WCR_REG);
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/* wait for reset to assert... */
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mdelay(500);
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printk(KERN_ERR "Watchdog reset failed to assert reset\n");
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/* delay to allow the serial port to show the message */
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mdelay(50);
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/* we'll take a jump through zero as a poor second */
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cpu_reset(0);
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}
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}
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