You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
1.5 KiB
67 lines
1.5 KiB
/*
|
|
* misc setup functions for MPC83xx
|
|
*
|
|
* Maintainer: Kumar Gala <galak@kernel.crashing.org>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/stddef.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/hw_irq.h>
|
|
#include <sysdev/fsl_soc.h>
|
|
|
|
#include "mpc83xx.h"
|
|
|
|
static __be32 __iomem *restart_reg_base;
|
|
|
|
static int __init mpc83xx_restart_init(void)
|
|
{
|
|
/* map reset restart_reg_baseister space */
|
|
restart_reg_base = ioremap(get_immrbase() + 0x900, 0xff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(mpc83xx_restart_init);
|
|
|
|
void mpc83xx_restart(char *cmd)
|
|
{
|
|
#define RST_OFFSET 0x00000900
|
|
#define RST_PROT_REG 0x00000018
|
|
#define RST_CTRL_REG 0x0000001c
|
|
|
|
local_irq_disable();
|
|
|
|
if (restart_reg_base) {
|
|
/* enable software reset "RSTE" */
|
|
out_be32(restart_reg_base + (RST_PROT_REG >> 2), 0x52535445);
|
|
|
|
/* set software hard reset */
|
|
out_be32(restart_reg_base + (RST_CTRL_REG >> 2), 0x2);
|
|
} else {
|
|
printk (KERN_EMERG "Error: Restart registers not mapped, spinning!\n");
|
|
}
|
|
|
|
for (;;) ;
|
|
}
|
|
|
|
long __init mpc83xx_time_init(void)
|
|
{
|
|
#define SPCR_OFFSET 0x00000110
|
|
#define SPCR_TBEN 0x00400000
|
|
__be32 __iomem *spcr = ioremap(get_immrbase() + SPCR_OFFSET, 4);
|
|
__be32 tmp;
|
|
|
|
tmp = in_be32(spcr);
|
|
out_be32(spcr, tmp | SPCR_TBEN);
|
|
|
|
iounmap(spcr);
|
|
|
|
return 0;
|
|
}
|
|
|