1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _M68K_PAGE_H
3 #define _M68K_PAGE_H
4
5 #include <linux/const.h>
6 #include <asm/setup.h>
7 #include <asm/page_offset.h>
8
9 /* PAGE_SHIFT determines the page size */
10 #define PAGE_SHIFT CONFIG_PAGE_SHIFT
11 #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
12 #define PAGE_MASK (~(PAGE_SIZE-1))
13 #define PAGE_OFFSET (PAGE_OFFSET_RAW)
14
15 #ifndef __ASSEMBLY__
16
17 /*
18 * These are used to make use of C type-checking..
19 */
20 #if !defined(CONFIG_MMU) || CONFIG_PGTABLE_LEVELS == 3
21 typedef struct { unsigned long pmd; } pmd_t;
22 #define pmd_val(x) ((&x)->pmd)
23 #define __pmd(x) ((pmd_t) { (x) } )
24 #endif
25
26 typedef struct { unsigned long pte; } pte_t;
27 typedef struct { unsigned long pgd; } pgd_t;
28 typedef struct { unsigned long pgprot; } pgprot_t;
29
30 #if defined(CONFIG_SUN3)
31 /*
32 * Sun3 still uses the asm-generic/pgalloc.h code and thus needs this
33 * definition. It would be possible to unify Sun3 and ColdFire pgalloc and have
34 * all of m68k use the same type.
35 */
36 typedef struct page *pgtable_t;
37 #else
38 typedef pte_t *pgtable_t;
39 #endif
40
41 #define pte_val(x) ((x).pte)
42 #define pgd_val(x) ((x).pgd)
43 #define pgprot_val(x) ((x).pgprot)
44
45 #define __pte(x) ((pte_t) { (x) } )
46 #define __pgd(x) ((pgd_t) { (x) } )
47 #define __pgprot(x) ((pgprot_t) { (x) } )
48
49 extern unsigned long _rambase;
50 extern unsigned long _ramstart;
51 extern unsigned long _ramend;
52
53 #endif /* !__ASSEMBLY__ */
54
55 #ifdef CONFIG_MMU
56 #include <asm/page_mm.h>
57 #else
58 #include <asm/page_no.h>
59 #endif
60
61 #include <asm-generic/getorder.h>
62 #include <asm-generic/memory_model.h>
63
64 #endif /* _M68K_PAGE_H */
65
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