mod_regs_cac.h

来自「eCos操作系统源码」· C头文件 代码 · 共 76 行

//=============================================================================
//
//      mod_regs_cac.h
//
//      CAC (cache) Module register definitions
//
//=============================================================================
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//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   jskov
// Contributors:jskov
// Date:        2000-10-30
//              
//####DESCRIPTIONEND####
//
//=============================================================================

// Besides the below, cache sizes are defined in the CPU variant module
// headers (mod_77xx.h).

//--------------------------------------------------------------------------
// Cache registers
#define CYGARC_REG_CCR                  0xffffffec

#define CYGARC_REG_CCR_RA               0x00000020
#define CYGARC_REG_CCR_CF               0x00000008
#define CYGARC_REG_CCR_CB               0x00000004
#define CYGARC_REG_CCR_WT               0x00000002
#define CYGARC_REG_CCR_CE               0x00000001


//--------------------------------------------------------------------------
// Address array access
// Address part (base/top/step specified in mod file)
#define CYGARC_REG_CACHE_ADDRESS_ADDRESS 0x00000008 // compare address

// Data part
#define CYGARC_REG_CACHE_ADDRESS_TAG_Mask 0x1ffffc00
#define CYGARC_REG_CACHE_ADDRESS_U 0x00000002 // updated (contains dirty data)
#define CYGARC_REG_CACHE_ADDRESS_V 0x00000001 // valid