projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| eea643f7 JB |
1 | /* |
| 2 | * Copyright (C) 1999 ARM Limited | |
| 3 | * Copyright (C) 2000 Deep Blue Solutions Ltd | |
| 4 | * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved. | |
| 5 | * Copyright 2008 Juergen Beisert, kernel@pengutronix.de | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; either version 2 of the License, or | |
| 10 | * (at your option) any later version. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with this program; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #include <linux/kernel.h> | |
| 23 | #include <linux/clk.h> | |
| 24 | #include <linux/io.h> | |
| 25 | ||
| a09e64fb | 26 | #include <mach/hardware.h> |
| eea643f7 JB |
27 | #include <asm/proc-fns.h> |
| 28 | #include <asm/system.h> | |
| 29 | ||
| 30 | /* | |
| 31 | * Put the CPU into idle mode. It is called by default_idle() | |
| 32 | * in process.c file. | |
| 33 | */ | |
| 34 | void arch_idle(void) | |
| 35 | { | |
| 36 | /* | |
| 37 | * This should do all the clock switching | |
| 38 | * and wait for interrupt tricks. | |
| 39 | */ | |
| 40 | cpu_do_idle(); | |
| 41 | } | |
| 42 | ||
| 43 | #define WDOG_WCR_REG IO_ADDRESS(WDOG_BASE_ADDR) | |
| 44 | #define WDOG_WCR_SRS (1 << 4) | |
| 45 | ||
| 46 | /* | |
| 47 | * Reset the system. It is called by machine_restart(). | |
| 48 | */ | |
| 49 | void arch_reset(char mode) | |
| 50 | { | |
| 51 | struct clk *clk; | |
| 52 | ||
| 53 | clk = clk_get(NULL, "wdog_clk"); | |
| 54 | if (!clk) { | |
| 55 | printk(KERN_ERR"Cannot activate the watchdog. Giving up\n"); | |
| 56 | return; | |
| 57 | } | |
| 58 | ||
| 59 | clk_enable(clk); | |
| 60 | ||
| 61 | /* Assert SRS signal */ | |
| 62 | __raw_writew(__raw_readw(WDOG_WCR_REG) & ~WDOG_WCR_SRS, WDOG_WCR_REG); | |
| 63 | } |