mylib.h

The LN2410SBC is a high performance single board computer based on ARM920T (MMU included). Its ultra

#define U8  unsigned char
#define U16 unsigned short
#define U32 unsigned int
#define S8  char
#define S16 short
#define S32 int


#define DESC_SEC	(0x2|(1<<4))
#define CB		(3<<2)  //cache_on, write_back
#define CNB		(2<<2)  //cache_on, write_through 
#define NCB             (1<<2)  //cache_off,WR_BUF on
#define NCNB		(0<<2)  //cache_off,WR_BUF off
#define AP_RW		(3<<10) //supervisor=RW, user=RW
#define AP_RO		(2<<10) //supervisor=RW, user=RO

#define DOMAIN_FAULT	(0x0)
#define DOMAIN_CHK	(0x1) 
#define DOMAIN_NOTCHK	(0x3) 
#define DOMAIN0		(0x0<<5)
#define DOMAIN1		(0x1<<5)

#define DOMAIN0_ATTR	(DOMAIN_CHK<<0) 
#define DOMAIN1_ATTR	(DOMAIN_FAULT<<2) 

#define RW_CB		(AP_RW|DOMAIN0|CB|DESC_SEC)
#define RW_CNB		(AP_RW|DOMAIN0|CNB|DESC_SEC)
#define RW_NCNB		(AP_RW|DOMAIN0|NCNB|DESC_SEC)
#define RW_FAULT	(AP_RW|DOMAIN1|NCNB|DESC_SEC)


void ChangeClockDivider(int hdivn,int pdivn);
void ChangeMPllValue(int mdiv,int pdiv,int sdiv);
void ChangeUPllValue(int mdiv,int pdiv,int sdiv);

int  random(int val);
void Delay(unsigned short time);
void Led_Display(int on);

void Uart_Init(void);
char Uart_GetCh(void);
char Uart_GetKey(void);
void Uart_PutCh(int data);
void Uart_PutStr(char *pt);
void Uart_Printf(char *fmt,...);

void MMU_Init(void);
void MMU_SetMTT(int vaddrStart,int vaddrEnd,int paddrStart,int attr);
void ChangeRomCacheStatus(int attr);