mmu.h

来自「英培特ARM教学平台EDUKIT-III」· C头文件 代码 · 共 29 行

#ifndef MMU_H_
#define MMU_H_

/* 
 * MMU Level 1 Page Table Constants
 * Section descriptor 
 */ 
#define MMU_FULL_ACCESS		(3 << 10)	/* access permission bits */
#define MMU_DOMAIN		(0 << 5)	/* domain control bits */
#define MMU_SPECIAL		(1 << 4)	/* must be 1 */
#define MMU_CACHEABLE		(1 << 3)	/* cacheable */
#define MMU_BUFFERABLE		(1 << 2)	/* bufferable */
#define MMU_SECTION		(2) /* indicates that this is a section descriptor */
#define MMU_SECDESC		(MMU_FULL_ACCESS | MMU_DOMAIN | \
				 MMU_SPECIAL | MMU_SECTION)
#define MMU_SECTION_SIZE	0x00100000

void cache_clean_invalidate(void);
void tlb_invalidate(void);
void mmu_init(void);
void mem_map_init(void);

#define CONFIG_CPU_D_CACHE_ON
#define CONFIG_CPU_I_CACHE_ON
//#undef CONFIG_CPU_D_CACHE_ON
//#undef CONFIG_CPU_I_CACHE_ON

#endif /* MMU_H_ */