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#ifndef _ASM_FIXMAP_H
#define _ASM_FIXMAP_H
#include <linux/kernel.h>
#include <asm/pgtable.h>
#include <asm/kmap_types.h>
#define FIXADDR_START 0xffc00000UL
#define FIXADDR_END 0xfff00000UL
#define FIXADDR_TOP (FIXADDR_END - PAGE_SIZE)
/*
* 224 temporary boot-time mappings, used by early_ioremap(),
* before ioremap() is functional.
*
* (P)re-using the FIXADDR region, which is used for highmem
* later on, and statically aligned to 1MB.
*/
#define NR_FIX_BTMAPS 32
#define FIX_BTMAPS_SLOTS 7
#define TOTAL_FIX_BTMAPS (NR_FIX_BTMAPS * FIX_BTMAPS_SLOTS)
enum fixed_addresses {
FIX_EARLYCON_MEM_BASE,
FIX_SMP_MEM_BASE,
__end_of_permanent_fixed_addresses,
FIX_BTMAP_END = __end_of_permanent_fixed_addresses,
FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1,
FIX_KMAP_BEGIN = __end_of_permanent_fixed_addresses,
FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * NR_CPUS) - 1,
/* Support writing RO kernel text via kprobes, jump labels, etc. */
FIX_TEXT_POKE0,
FIX_TEXT_POKE1,
__end_of_fixed_addresses = (FIXADDR_END - FIXADDR_START) >> PAGE_SHIFT,
};
#define FIXMAP_PAGE_COMMON (L_PTE_YOUNG | L_PTE_PRESENT | L_PTE_XN)
#define FIXMAP_PAGE_NORMAL (FIXMAP_PAGE_COMMON | L_PTE_MT_WRITEBACK)
#define FIXMAP_PAGE_IO (FIXMAP_PAGE_COMMON | L_PTE_MT_DEV_SHARED | L_PTE_SHARED | L_PTE_DIRTY)
#define FIXMAP_PAGE_NOCACHE FIXMAP_PAGE_IO
extern void __early_set_fixmap(enum fixed_addresses idx,
phys_addr_t phys, pgprot_t flags);
void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot);
#include <asm-generic/fixmap.h>
#endif
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