1 files changed, 143 insertions, 0 deletions

diff --git a/include/asm-x86/page_64.h b/include/asm-x86/page_64.h
new file mode 100644
index 000000000000..88adf1afb0a2
--- /dev/null
+++ b/include/asm-x86/page_64.h
@@ -0,0 +1,143 @@
+#ifndef _X86_64_PAGE_H
+#define _X86_64_PAGE_H
+
+#include <linux/const.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT      12
+#define PAGE_SIZE       (_AC(1,UL) << PAGE_SHIFT)
+#define PAGE_MASK       (~(PAGE_SIZE-1))
+#define PHYSICAL_PAGE_MASK      (~(PAGE_SIZE-1) & __PHYSICAL_MASK)
+
+#define THREAD_ORDER 1 
+#define THREAD_SIZE  (PAGE_SIZE << THREAD_ORDER)
+#define CURRENT_MASK (~(THREAD_SIZE-1))
+
+#define EXCEPTION_STACK_ORDER 0
+#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
+
+#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
+#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
+
+#define IRQSTACK_ORDER 2
+#define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER)
+
+#define STACKFAULT_STACK 1
+#define DOUBLEFAULT_STACK 2
+#define NMI_STACK 3
+#define DEBUG_STACK 4
+#define MCE_STACK 5
+#define N_EXCEPTION_STACKS 5  /* hw limit: 7 */
+
+#define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1))
+#define LARGE_PAGE_SIZE (_AC(1,UL) << PMD_SHIFT)
+
+#define HPAGE_SHIFT PMD_SHIFT
+#define HPAGE_SIZE      (_AC(1,UL) << HPAGE_SHIFT)
+#define HPAGE_MASK      (~(HPAGE_SIZE - 1))
+#define HUGETLB_PAGE_ORDER      (HPAGE_SHIFT - PAGE_SHIFT)
+
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+
+extern unsigned long end_pfn;
+
+void clear_page(void *);
+void copy_page(void *, void *);
+
+#define clear_user_page(page, vaddr, pg)        clear_page(page)
+#define copy_user_page(to, from, vaddr, pg)     copy_page(to, from)
+
+#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
+        alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
+#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct { unsigned long pte; } pte_t;
+typedef struct { unsigned long pmd; } pmd_t;
+typedef struct { unsigned long pud; } pud_t;
+typedef struct { unsigned long pgd; } pgd_t;
+#define PTE_MASK        PHYSICAL_PAGE_MASK
+
+typedef struct { unsigned long pgprot; } pgprot_t;
+
+extern unsigned long phys_base;
+
+#define pte_val(x)      ((x).pte)
+#define pmd_val(x)      ((x).pmd)
+#define pud_val(x)      ((x).pud)
+#define pgd_val(x)      ((x).pgd)
+#define pgprot_val(x)   ((x).pgprot)
+
+#define __pte(x) ((pte_t) { (x) } )
+#define __pmd(x) ((pmd_t) { (x) } )
+#define __pud(x) ((pud_t) { (x) } )
+#define __pgd(x) ((pgd_t) { (x) } )
+#define __pgprot(x)     ((pgprot_t) { (x) } )
+
+#endif /* !__ASSEMBLY__ */
+
+#define __PHYSICAL_START        CONFIG_PHYSICAL_START
+#define __KERNEL_ALIGN          0x200000
+
+/*
+ * Make sure kernel is aligned to 2MB address. Catching it at compile
+ * time is better. Change your config file and compile the kernel
+ * for a 2MB aligned address (CONFIG_PHYSICAL_START)
+ */
+#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
+#error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
+#endif
+
+#define __START_KERNEL          (__START_KERNEL_map + __PHYSICAL_START)
+#define __START_KERNEL_map      _AC(0xffffffff80000000, UL)
+#define __PAGE_OFFSET           _AC(0xffff810000000000, UL)
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)
+
+/* See Documentation/x86_64/mm.txt for a description of the memory map. */
+#define __PHYSICAL_MASK_SHIFT   46
+#define __PHYSICAL_MASK         ((_AC(1,UL) << __PHYSICAL_MASK_SHIFT) - 1)
+#define __VIRTUAL_MASK_SHIFT    48
+#define __VIRTUAL_MASK          ((_AC(1,UL) << __VIRTUAL_MASK_SHIFT) - 1)
+
+#define KERNEL_TEXT_SIZE  (40*1024*1024)
+#define KERNEL_TEXT_START _AC(0xffffffff80000000, UL)
+#define PAGE_OFFSET             __PAGE_OFFSET
+
+#ifndef __ASSEMBLY__
+
+#include <asm/bug.h>
+
+extern unsigned long __phys_addr(unsigned long);
+
+#endif /* __ASSEMBLY__ */
+
+#define __pa(x)         __phys_addr((unsigned long)(x))
+#define __pa_symbol(x)  __phys_addr((unsigned long)(x))
+
+#define __va(x)                 ((void *)((unsigned long)(x)+PAGE_OFFSET))
+#define __boot_va(x)            __va(x)
+#define __boot_pa(x)            __pa(x)
+#ifdef CONFIG_FLATMEM
+#define pfn_valid(pfn)          ((pfn) < end_pfn)
+#endif
+
+#define virt_to_page(kaddr)     pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#define virt_addr_valid(kaddr)  pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+#define pfn_to_kaddr(pfn)      __va((pfn) << PAGE_SHIFT)
+
+#define VM_DATA_DEFAULT_FLAGS \
+        (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
+         VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#define __HAVE_ARCH_GATE_AREA 1 
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/page.h>
+
+#endif /* __KERNEL__ */
+
+#endif /* _X86_64_PAGE_H */