47 строки
1.2 KiB
C
47 строки
1.2 KiB
C
/*
|
|
* include/asm-arm/arch-ixp4xx/cpu.h
|
|
*
|
|
* IXP4XX cpu type detection
|
|
*
|
|
* Copyright (C) 2007 MontaVista Software, Inc.
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef __ASM_ARCH_CPU_H__
|
|
#define __ASM_ARCH_CPU_H__
|
|
|
|
extern unsigned int processor_id;
|
|
/* Processor id value in CP15 Register 0 */
|
|
#define IXP425_PROCESSOR_ID_VALUE 0x690541c0
|
|
#define IXP435_PROCESSOR_ID_VALUE 0x69054040
|
|
#define IXP465_PROCESSOR_ID_VALUE 0x69054200
|
|
#define IXP4XX_PROCESSOR_ID_MASK 0xfffffff0
|
|
|
|
#define cpu_is_ixp42x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \
|
|
IXP425_PROCESSOR_ID_VALUE)
|
|
#define cpu_is_ixp43x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \
|
|
IXP435_PROCESSOR_ID_VALUE)
|
|
#define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \
|
|
IXP465_PROCESSOR_ID_VALUE)
|
|
|
|
static inline u32 ixp4xx_read_feature_bits(void)
|
|
{
|
|
unsigned int val = ~*IXP4XX_EXP_CFG2;
|
|
val &= ~IXP4XX_FEATURE_RESERVED;
|
|
if (!cpu_is_ixp46x())
|
|
val &= ~IXP4XX_FEATURE_IXP46X_ONLY;
|
|
|
|
return val;
|
|
}
|
|
|
|
static inline void ixp4xx_write_feature_bits(u32 value)
|
|
{
|
|
*IXP4XX_EXP_CFG2 = ~value;
|
|
}
|
|
|
|
#endif /* _ASM_ARCH_CPU_H */
|