diff options
Diffstat (limited to 'arch/csky/abiv1/inc/abi/pgtable-bits.h')
| -rw-r--r-- | arch/csky/abiv1/inc/abi/pgtable-bits.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/csky/abiv1/inc/abi/pgtable-bits.h b/arch/csky/abiv1/inc/abi/pgtable-bits.h new file mode 100644 index 000000000..d605445aa --- /dev/null +++ b/arch/csky/abiv1/inc/abi/pgtable-bits.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#ifndef __ASM_CSKY_PGTABLE_BITS_H +#define __ASM_CSKY_PGTABLE_BITS_H + +/* implemented in software */ +#define _PAGE_ACCESSED (1<<3) +#define PAGE_ACCESSED_BIT (3) + +#define _PAGE_READ (1<<1) +#define _PAGE_WRITE (1<<2) +#define _PAGE_PRESENT (1<<0) + +#define _PAGE_MODIFIED (1<<4) +#define PAGE_MODIFIED_BIT (4) + +/* implemented in hardware */ +#define _PAGE_GLOBAL (1<<6) + +#define _PAGE_VALID (1<<7) +#define PAGE_VALID_BIT (7) + +#define _PAGE_DIRTY (1<<8) +#define PAGE_DIRTY_BIT (8) + +#define _PAGE_CACHE (3<<9) +#define _PAGE_UNCACHE (2<<9) +#define _PAGE_SO _PAGE_UNCACHE + +#define _CACHE_MASK (7<<9) + +#define _CACHE_CACHED (_PAGE_VALID | _PAGE_CACHE) +#define _CACHE_UNCACHED (_PAGE_VALID | _PAGE_UNCACHE) + +#define HAVE_ARCH_UNMAPPED_AREA + +#endif /* __ASM_CSKY_PGTABLE_BITS_H */ |