Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / arch / powerpc / platforms / 83xx / misc.c
blobf01806c940e14b8e62b3d54d0cd77c300e1a4040
1 /*
2 * misc setup functions for MPC83xx
4 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
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.
12 #include <linux/stddef.h>
13 #include <linux/kernel.h>
15 #include <asm/io.h>
16 #include <asm/hw_irq.h>
17 #include <sysdev/fsl_soc.h>
19 #include "mpc83xx.h"
21 static __be32 __iomem *restart_reg_base;
23 static int __init mpc83xx_restart_init(void)
25 /* map reset restart_reg_baseister space */
26 restart_reg_base = ioremap(get_immrbase() + 0x900, 0xff);
28 return 0;
31 arch_initcall(mpc83xx_restart_init);
33 void mpc83xx_restart(char *cmd)
35 #define RST_OFFSET 0x00000900
36 #define RST_PROT_REG 0x00000018
37 #define RST_CTRL_REG 0x0000001c
39 local_irq_disable();
41 if (restart_reg_base) {
42 /* enable software reset "RSTE" */
43 out_be32(restart_reg_base + (RST_PROT_REG >> 2), 0x52535445);
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");
51 for (;;) ;
54 long __init mpc83xx_time_init(void)
56 #define SPCR_OFFSET 0x00000110
57 #define SPCR_TBEN 0x00400000
58 __be32 __iomem *spcr = ioremap(get_immrbase() + SPCR_OFFSET, 4);
59 __be32 tmp;
61 tmp = in_be32(spcr);
62 out_be32(spcr, tmp | SPCR_TBEN);
64 iounmap(spcr);
66 return 0;