1 #ifndef _ASM_POWERPC_PAGE_32_H
2 #define _ASM_POWERPC_PAGE_32_H
4 #if defined(CONFIG_PHYSICAL_ALIGN) && (CONFIG_PHYSICAL_START != 0)
5 #if (CONFIG_PHYSICAL_START % CONFIG_PHYSICAL_ALIGN) != 0
6 #error "CONFIG_PHYSICAL_START must be a multiple of CONFIG_PHYSICAL_ALIGN"
10 #define VM_DATA_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS32
12 #ifdef CONFIG_NOT_COHERENT_CACHE
13 #define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
16 #ifdef CONFIG_PTE_64BIT
17 #define PTE_FLAGS_OFFSET 4 /* offset of PTE flags, in bytes */
19 #define PTE_FLAGS_OFFSET 0
22 #ifdef CONFIG_PPC_256K_PAGES
23 #define PTE_SHIFT (PAGE_SHIFT - PTE_T_LOG2 - 2) /* 1/4 of a page */
25 #define PTE_SHIFT (PAGE_SHIFT - PTE_T_LOG2) /* full page */
30 * The basic type of a PTE - 64 bits for those CPUs with > 32 bit
31 * physical addressing.
33 #ifdef CONFIG_PTE_64BIT
34 typedef unsigned long long pte_basic_t;
36 typedef unsigned long pte_basic_t;
40 extern void clear_pages(void *page, int order);
41 static inline void clear_page(void *page) { clear_pages(page, 0); }
42 extern void copy_page(void *to, void *from);
44 #include <asm-generic/getorder.h>
46 #define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1)
47 #define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1)
49 #endif /* __ASSEMBLY__ */
51 #endif /* _ASM_POWERPC_PAGE_32_H */