56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
|
/*
|
||
|
* 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/config.h>
|
||
|
#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"
|
||
|
|
||
|
void mpc83xx_restart(char *cmd)
|
||
|
{
|
||
|
#define RST_OFFSET 0x00000900
|
||
|
#define RST_PROT_REG 0x00000018
|
||
|
#define RST_CTRL_REG 0x0000001c
|
||
|
__be32 __iomem *reg;
|
||
|
|
||
|
/* map reset register space */
|
||
|
reg = ioremap(get_immrbase() + 0x900, 0xff);
|
||
|
|
||
|
local_irq_disable();
|
||
|
|
||
|
/* enable software reset "RSTE" */
|
||
|
out_be32(reg + (RST_PROT_REG >> 2), 0x52535445);
|
||
|
|
||
|
/* set software hard reset */
|
||
|
out_be32(reg + (RST_CTRL_REG >> 2), 0x52535445);
|
||
|
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;
|
||
|
}
|