i was a freshman in developing sbc8260 board.
 
 
i got a led_light program for testing boot ,and set some register right in cpu_init_f. Why the uboot could not boot successed?
another questions:what purpose about env_init?
 
Thanks!
 
static int led_light(void)
 {
 int i,j;
 char *k=0x21000000;
 char ki[8]={0,4,2,6,1,5,3,7};
 int l=0;
 for(i=0;i<=7;i++)
  {
  for(j=1;j<100;j++)
   {
   l++;
   }
   *(k+ki[i])=0x80;
  for(j=1;j<5000000;j++)
   {
   l--;
   }
   *(k+ki[i])=0x0;
  return(0);
   }
 }
 
 

nit_fnc_t *init_sequence[] = {

#if defined(CONFIG_BOARD_EARLY_INIT_F)
 board_early_init_f,
#endif

#if !defined(CONFIG_TQM866M)
 get_clocks,  /* get CPU and bus clocks (etc.) */
#if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M)
 adjust_sdram_tbs_8xx,
#endif
 init_timebase,
#endif
#ifdef CFG_ALLOC_DPRAM
#if !(defined(CONFIG_8260) || defined(CONFIG_MPC8560))
 dpram_init,
#endif
#endif
#if defined(CONFIG_BOARD_POSTCLK_INIT)
 board_postclk_init,
#endif

led_light,  //if i placed this program here, the led of board flashed. 


 env_init,

 

led_light,  //if i placed this program here, the led of board didn't flash

 


#if defined(CONFIG_TQM866M)
 get_clocks_866,  /* get CPU and bus clocks according to the environment variable */
 sdram_adjust_866, /* adjust sdram refresh rate according to the new clock */
 init_timebase,
#endif
 init_baudrate,
 serial_init,
 console_init_f,
 display_options,
#if defined(CONFIG_8260)
 prt_8260_rsr,
 prt_8260_clks,
#endif /* CONFIG_8260 */
 checkcpu,
#if defined(CONFIG_MPC5xxx)
 prt_mpc5xxx_clks,
#endif /* CONFIG_MPC5xxx */
 checkboard,
 INIT_FUNC_WATCHDOG_INIT
#if defined(CONFIG_MISC_INIT_F)
 misc_init_f,
#endif
 INIT_FUNC_WATCHDOG_RESET
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 init_func_i2c,
#endif
#if defined(CONFIG_DTT)  /* Digital Thermometers and Thermostats */
 dtt_init,
#endif
#ifdef CONFIG_POST
 post_init_f,
#endif
 INIT_FUNC_WATCHDOG_RESET
 init_func_ram,
#if defined(CFG_DRAM_TEST)
 testdram,
#endif /* CFG_DRAM_TEST */
 INIT_FUNC_WATCHDOG_RESET

 NULL,   /* Terminate this list */
};