mirror of https://gitee.com/openkylin/linux.git
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
|
|
* linux/include/asm-arm/arch-iop13xx/system.h
|
|
*
|
|
* Copyright (C) 2004 Intel Corp.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <asm/arch/iop13xx.h>
|
|
static inline void arch_idle(void)
|
|
{
|
|
cpu_do_idle();
|
|
}
|
|
|
|
/* WDTCR CP6 R7 Page 9 */
|
|
static inline u32 read_wdtcr(void)
|
|
{
|
|
u32 val;
|
|
asm volatile("mrc p6, 0, %0, c7, c9, 0":"=r" (val));
|
|
return val;
|
|
}
|
|
static inline void write_wdtcr(u32 val)
|
|
{
|
|
asm volatile("mcr p6, 0, %0, c7, c9, 0"::"r" (val));
|
|
}
|
|
|
|
/* WDTSR CP6 R8 Page 9 */
|
|
static inline u32 read_wdtsr(void)
|
|
{
|
|
u32 val;
|
|
asm volatile("mrc p6, 0, %0, c8, c9, 0":"=r" (val));
|
|
return val;
|
|
}
|
|
static inline void write_wdtsr(u32 val)
|
|
{
|
|
asm volatile("mcr p6, 0, %0, c8, c9, 0"::"r" (val));
|
|
}
|
|
|
|
#define IOP13XX_WDTCR_EN_ARM 0x1e1e1e1e
|
|
#define IOP13XX_WDTCR_EN 0xe1e1e1e1
|
|
#define IOP13XX_WDTCR_DIS_ARM 0x1f1f1f1f
|
|
#define IOP13XX_WDTCR_DIS 0xf1f1f1f1
|
|
#define IOP13XX_WDTSR_WRITE_EN (1 << 31)
|
|
#define IOP13XX_WDTCR_IB_RESET (1 << 0)
|
|
static inline void arch_reset(char mode)
|
|
{
|
|
/*
|
|
* Reset the internal bus (warning both cores are reset)
|
|
*/
|
|
write_wdtcr(IOP13XX_WDTCR_EN_ARM);
|
|
write_wdtcr(IOP13XX_WDTCR_EN);
|
|
write_wdtsr(IOP13XX_WDTSR_WRITE_EN | IOP13XX_WDTCR_IB_RESET);
|
|
write_wdtcr(0x1000);
|
|
|
|
for(;;);
|
|
}
|