low_level_init.c

ucos str912 dsfkdslalldllasdfs

/**************************************************
 *
 * This module contains the function `__low_level_init', a function
 * that is called before the `main' function of the program.  Normally
 * low-level initializations - such as setting the prefered interrupt
 * level or setting the watchdog - can be performed here.
 *
 * Note that this function is called before the data segments are
 * initialized, this means that this function cannot rely on the
 * values of global or static variables.
 *
 * When this function returns zero, the startup code will inhibit the
 * initialization of the data segments. The result is faster startup,
 * the drawback is that neither global nor static data will be
 * initialized.
 *
 * Copyright 1999-2004 IAR Systems. All rights reserved.
 *
 * $Revision: 1.7 $
 *
 **************************************************/

/* ICODE is the same segment as cstartup. By placing __low_level_init
 * in the same segment, we make sure it can be reached with BL. */

#ifdef __cplusplus
extern "C" {
#endif

#pragma language=extended

__interwork int __low_level_init(void);

#pragma location="ICODE"
__interwork int __low_level_init(void)
{
  /*==================================*/
  /*  Initialize hardware.            */
  /*==================================*/

  /*==================================*/
  /* Choose if segment initialization */
  /* should be done or not.           */
  /* Return: 0 to omit seg_init       */
  /*         1 to run seg_init        */
  /*==================================*/

  *((unsigned int *)0x44000000) = 0x00000004;    /* Select bank 0 as the boot bank; specify its size */
  *((unsigned int *)0x4400000C) = 0x00000000;    /* Set the base address of bank 0                   */
  *((unsigned int *)0x44000004) = 0x00000002;    /* Specify the size of bank 1                       */
  *((unsigned int *)0x44000010) = 0x00080000;    /* Set the base address of bank 1                   */
  *((unsigned int *)0x5C002034) = 0x00000197;    /* Specify an SRAM size of 96 kBytes                */

  return (1);
}

#pragma language=default

#ifdef __cplusplus
}
#endif