Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
[linux-2.6] / arch / powerpc / platforms / 83xx / misc.c
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1/*
2 * misc setup functions for MPC83xx
3 *
4 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
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12#include <linux/stddef.h>
13#include <linux/kernel.h>
14
15#include <asm/io.h>
16#include <asm/hw_irq.h>
17#include <sysdev/fsl_soc.h>
18
19#include "mpc83xx.h"
20
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21static __be32 __iomem *restart_reg_base;
22
23static int __init mpc83xx_restart_init(void)
24{
25 /* map reset restart_reg_baseister space */
26 restart_reg_base = ioremap(get_immrbase() + 0x900, 0xff);
27
28 return 0;
29}
30
31arch_initcall(mpc83xx_restart_init);
32
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33void mpc83xx_restart(char *cmd)
34{
35#define RST_OFFSET 0x00000900
36#define RST_PROT_REG 0x00000018
37#define RST_CTRL_REG 0x0000001c
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38
39 local_irq_disable();
40
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41 if (restart_reg_base) {
42 /* enable software reset "RSTE" */
43 out_be32(restart_reg_base + (RST_PROT_REG >> 2), 0x52535445);
44
45 /* set software hard reset */
46 out_be32(restart_reg_base + (RST_CTRL_REG >> 2), 0x2);
47 } else {
48 printk (KERN_EMERG "Error: Restart registers not mapped, spinning!\n");
49 }
30f59336 50
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51 for (;;) ;
52}
53
54long __init mpc83xx_time_init(void)
55{
56#define SPCR_OFFSET 0x00000110
57#define SPCR_TBEN 0x00400000
58 __be32 __iomem *spcr = ioremap(get_immrbase() + SPCR_OFFSET, 4);
59 __be32 tmp;
60
61 tmp = in_be32(spcr);
62 out_be32(spcr, tmp | SPCR_TBEN);
63
64 iounmap(spcr);
65
66 return 0;
67}