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/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2005-2017 Andes Technology Corporation
#ifndef _ASM_NDS32_NDS32_H_
#define _ASM_NDS32_NDS32_H_
#include <asm/bitfield.h>
#include <asm/cachectl.h>
#ifndef __ASSEMBLY__
#include <linux/init.h>
#include <asm/barrier.h>
#include <nds32_intrinsic.h>
#ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
#define FP_OFFSET (-3)
#else
#define FP_OFFSET (-2)
#endif
#define LP_OFFSET (-1)
extern void __init early_trap_init(void);
static inline void GIE_ENABLE(void)
{
mb();
__nds32__gie_en();
}
static inline void GIE_DISABLE(void)
{
mb();
__nds32__gie_dis();
}
static inline unsigned long CACHE_SET(unsigned char cache)
{
if (cache == ICACHE)
return 64 << ((__nds32__mfsr(NDS32_SR_ICM_CFG) & ICM_CFG_mskISET) >>
ICM_CFG_offISET);
else
return 64 << ((__nds32__mfsr(NDS32_SR_DCM_CFG) & DCM_CFG_mskDSET) >>
DCM_CFG_offDSET);
}
static inline unsigned long CACHE_WAY(unsigned char cache)
{
if (cache == ICACHE)
return 1 +
((__nds32__mfsr(NDS32_SR_ICM_CFG) & ICM_CFG_mskIWAY) >> ICM_CFG_offIWAY);
else
return 1 +
((__nds32__mfsr(NDS32_SR_DCM_CFG) & DCM_CFG_mskDWAY) >> DCM_CFG_offDWAY);
}
static inline unsigned long CACHE_LINE_SIZE(unsigned char cache)
{
if (cache == ICACHE)
return 8 <<
(((__nds32__mfsr(NDS32_SR_ICM_CFG) & ICM_CFG_mskISZ) >> ICM_CFG_offISZ) - 1);
else
return 8 <<
(((__nds32__mfsr(NDS32_SR_DCM_CFG) & DCM_CFG_mskDSZ) >> DCM_CFG_offDSZ) - 1);
}
#endif /* __ASSEMBLY__ */
#define IVB_BASE PHYS_OFFSET /* in user space for intr/exc/trap/break table base, 64KB aligned
* We defined at the start of the physical memory */
/* dispatched sub-entry exception handler numbering */
#define RD_PROT 0 /* read protrection */
#define WRT_PROT 1 /* write protection */
#define NOEXEC 2 /* non executable */
#define PAGE_MODIFY 3 /* page modified */
#define ACC_BIT 4 /* access bit */
#define RESVED_PTE 5 /* reserved PTE attribute */
/* reserved 6 ~ 16 */
#endif /* _ASM_NDS32_NDS32_H_ */