#include <linux/config.h>
#ifndef __ASSEMBLY__
+#include <asm/types.h>
#include <asm/cache.h>
#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
/*
* These are used to make use of C type-checking..
*/
+#ifdef __LP64__
typedef struct { unsigned long pte; } pte_t;
-typedef struct { unsigned long pmd; } pmd_t;
-typedef struct { unsigned long pgd; } pgd_t;
+#else
+typedef struct {
+ unsigned long pte;
+ unsigned long flags;
+} pte_t;
+#endif
+/* NOTE: even on 64 bits, these entries are __u32 because we allocate
+ * the pmd and pgd in ZONE_DMA (i.e. under 4GB) */
+typedef struct { __u32 pmd; } pmd_t;
+typedef struct { __u32 pgd; } pgd_t;
typedef struct { unsigned long pgprot; } pgprot_t;
#define pte_val(x) ((x).pte)
+#ifdef __LP64__
+#define pte_flags(x) (*(__u32 *)&((x).pte))
+#else
+#define pte_flags(x) ((x).flags)
+#endif
#define pmd_val(x) ((x).pmd)
#define pgd_val(x) ((x).pgd)
#define pgprot_val(x) ((x).pgprot)
#endif /* !__ASSEMBLY__ */
+/* WARNING: The definitions below must match exactly to sizeof(pte_t)
+ * etc
+ */
+#ifdef __LP64__
+#define BITS_PER_PTE_ENTRY 3
+#define BITS_PER_PMD_ENTRY 2
+#define BITS_PER_PGD_ENTRY 2
+#else
+#define BITS_PER_PTE_ENTRY 3
+#define BITS_PER_PMD_ENTRY 2
+#define BITS_PER_PGD_ENTRY BITS_PER_PMD_ENTRY
+#endif
+#define PGD_ENTRY_SIZE (1UL << BITS_PER_PGD_ENTRY)
+#define PMD_ENTRY_SIZE (1UL << BITS_PER_PMD_ENTRY)
+#define PTE_ENTRY_SIZE (1UL << BITS_PER_PTE_ENTRY)
+
/* to align the pointer to the (next) page boundary */
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
#define LINUX_GATEWAY_SPACE 0
+
+/* This governs the relationship between virtual and physical addresses.
+ * If you alter it, make sure to take care of our various fixed mapping
+ * segments in fixmap.h */
#define __PAGE_OFFSET (0x10000000)
#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
+
+/* The size of the gateway page (we leave lots of room for expansion) */
+#define GATEWAY_PAGE_SIZE 0x4000
+
+/* The start of the actual kernel binary---used in vmlinux.lds.S
+ * Leave some space after __PAGE_OFFSET for detecting kernel null
+ * ptr derefs */
+#define KERNEL_BINARY_TEXT_START (__PAGE_OFFSET + 0x100000)
+
/* These macros don't work for 64-bit C code -- don't allow in C at all */
#ifdef __ASSEMBLY__
# define PA(x) ((x)-__PAGE_OFFSET)