#ifndef _ASM_SCORE_FIXMAP_H#define _ASM_SCORE_FIXMAP_H #include <asm/page.h> #define PHY_RAM_BASE		0x00000000#define PHY_IO_BASE		0x10000000 #define VIRTUAL_RAM_BASE	0xa0000000#define VIRTUAL_IO_BASE		0xb0000000 #define RAM_SPACE_SIZE		0x10000000#define IO_SPACE_SIZE		0x10000000 /* Kernel unmapped, cached 512MB */#define KSEG1			0xa0000000 /* * Here we define all the compile-time 'special' virtual * addresses. The point is to have a constant address at * compile time, but to set the physical address only * in the boot process. We allocate these special addresses * from the end of virtual memory (0xfffff000) backwards. * Also this lets us do fail-safe vmalloc(), we * can guarantee that these special addresses and * vmalloc()-ed addresses never overlap. * * these 'compile-time allocated' memory buffers are * fixed-size 4k pages. (or larger if used with an increment * highger than 1) use fixmap_set(idx,phys) to associate * physical memory with fixmap indices. * * TLB entries of such buffers will not be flushed across * task switches. */ /* * on UP currently we will have no trace of the fixmap mechanizm, * no page table allocations, etc. This might change in the * future, say framebuffers for the console driver(s) could be * fix-mapped? */enum fixed_addresses {#define FIX_N_COLOURS 8	FIX_CMAP_BEGIN,	FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS,	__end_of_fixed_addresses}; /* * used by vmalloc.c. * * Leave one empty page between vmalloc'ed areas and * the start of the fixmap, and leave one page empty * at the top of mem.. */#define FIXADDR_TOP	((unsigned long)(long)(int)0xfefe0000)#define FIXADDR_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)#define FIXADDR_START	(FIXADDR_TOP - FIXADDR_SIZE) #define __fix_to_virt(x)	(FIXADDR_TOP - ((x) << PAGE_SHIFT))#define __virt_to_fix(x)	\	((FIXADDR_TOP - ((x) & PAGE_MASK)) >> PAGE_SHIFT) extern void __this_fixmap_does_not_exist(void); /* * 'index to address' translation. If anyone tries to use the idx * directly without tranlation, we catch the bug with a NULL-deference * kernel oops. Illegal ranges of incoming indices are caught too. */static inline unsigned long fix_to_virt(const unsigned int idx){	return __fix_to_virt(idx);} static inline unsigned long virt_to_fix(const unsigned long vaddr){	return __virt_to_fix(vaddr);} #endif /* _ASM_SCORE_FIXMAP_H */