udelay.h

增加了tftp功能的vivi代码

#define rTCFG0		(*(volatile unsigned *)0x51000000)
#define rTCON	    (*(volatile unsigned *)0x51000008)
#define rTCNTB4     (*(volatile unsigned *)0x5100003c)
#define rUPLLCON (*(volatile unsigned *)0x4C000008)
#define CONFIG_PLL_INPUT_FREQ 12000000.
#define rTCNTO4	(*(volatile unsigned *)0x51000040)
#define READ_TIMER (rTCNTO4 & 0xffff)




unsigned long get_timer_masked (void);
unsigned long get_timer (unsigned long base);
void delay (unsigned long usec);
void init(void);