From b50f1704e9c441c58cf6dc05e72953ca30e1d4d2 Mon Sep 17 00:00:00 2001 From: GuanXuetao Date: Sat, 15 Jan 2011 18:16:59 +0800 Subject: unicore32 core architecture: mm related: generic codes This patch includes generic codes for memory management. Signed-off-by: Guan Xuetao Reviewed-by: Arnd Bergmann --- arch/unicore32/mm/mm.h | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 arch/unicore32/mm/mm.h (limited to 'arch/unicore32/mm/mm.h') diff --git a/arch/unicore32/mm/mm.h b/arch/unicore32/mm/mm.h new file mode 100644 index 000000000000..3296bca0f1f7 --- /dev/null +++ b/arch/unicore32/mm/mm.h @@ -0,0 +1,39 @@ +/* + * linux/arch/unicore32/mm/mm.h + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +/* the upper-most page table pointer */ +extern pmd_t *top_pmd; +extern int sysctl_overcommit_memory; + +#define TOP_PTE(x) pte_offset_kernel(top_pmd, x) + +static inline pmd_t *pmd_off(pgd_t *pgd, unsigned long virt) +{ + return pmd_offset((pud_t *)pgd, virt); +} + +static inline pmd_t *pmd_off_k(unsigned long virt) +{ + return pmd_off(pgd_offset_k(virt), virt); +} + +struct mem_type { + unsigned int prot_pte; + unsigned int prot_l1; + unsigned int prot_sect; +}; + +const struct mem_type *get_mem_type(unsigned int type); + +extern void __flush_dcache_page(struct address_space *, struct page *); + +void __init bootmem_init(void); +void uc32_mm_memblock_reserve(void); -- cgit