/*
* File: start.c
* Purpose: Kinetis start up routines.
*
* Notes:
*/
#include "start.h"
#include "common.h"
#include "wdog.h"
#include "sysinit.h"
/********************************************************************/
/*!
* \brief Kinetis Start
* \return None
*
* This function calls all of the needed starup routines and then
* branches to the main process.
*/
void start(void)
{
/* Disable the watchdog timer */
wdog_disable();
/* Copy any vector or data sections that need to be in RAM */
common_startup();
/* Perform processor initialization */
sysinit();
printf("\n\n");
/* Determine the last cause(s) of reset */
if (MC_SRSH & MC_SRSH_SW_MASK)
printf("Software Reset\n");
if (MC_SRSH & MC_SRSH_LOCKUP_MASK)
printf("Core Lockup Event Reset\n");
if (MC_SRSH & MC_SRSH_JTAG_MASK)
printf("JTAG Reset\n");
if (MC_SRSL & MC_SRSL_POR_MASK)
printf("Power-on Reset\n");
if (MC_SRSL & MC_SRSL_PIN_MASK)
printf("External Pin Reset\n");
if (MC_SRSL & MC_SRSL_COP_MASK)
printf("Watchdog(COP) Reset\n");
if (MC_SRSL & MC_SRSL_LOC_MASK)
printf("Loss of Clock Reset\n");
if (MC_SRSL & MC_SRSL_LVD_MASK)
printf("Low-voltage Detect Reset\n");
if (MC_SRSL & MC_SRSL_WAKEUP_MASK)
printf("LLWU Reset\n");
/* Determine specific Kinetis device and revision */
cpu_indentify();
/* Jump to main process */
main();
/* No actions to perform after this so wait forever */
while(1);
}
/********************************************************************/
/*!
* \brief Kinetis Identify
* \return None
*
* This is primarly a reporting function that displays information
* about the specific CPU to the default terminal including:
* - Kinetis family
* - package
* - die revision
* - P-flash size
* - Ram size
*/
void cpu_indentify (void)
{
/* Determine the Kinetis family */
switch((SIM_SDID & SIM_SDID_FAMID(0x7))>>SIM_SDID_FAMID_SHIFT)
{
case 0x0:
printf("\nK10-");
break;
case 0x1:
printf("\nK20-");
break;
case 0x2:
printf("\nK30-");
break;
case 0x3:
printf("\nK40-");
break;
case 0x4:
printf("\nK60-");
break;
default:
printf("\nUnrecognized Kinetis family device.\n");
break;
}
/* Determine the package size */
switch((SIM_SDID & SIM_SDID_PINID(0xF))>>SIM_SDID_PINID_SHIFT)
{
case 0x2:
printf("32pin\n");
break;
case 0x4:
printf("48pin\n");
break;
case 0x5:
printf("64pin\n");
break;
case 0x6:
printf("80pin\n");
break;
case 0x7:
printf("81pin\n");
break;
case 0x8:
printf("100pin\n");
break;
case 0x9:
printf("104pin\n");
break;
case 0xA:
printf("144pin\n");
break;
case 0xC:
printf("196pin\n");
break;
case 0xE:
printf("256pin\n");
break;
default:
printf("\nUnrecognized Kinetis package code.\n");
break;
}
/* Determine the revision ID */
printf("rev %d\n", SIM_SDID & SIM_SDID_REVID(0xF));
/* Determine the P-flash size */
switch((SIM_FCFG1 & SIM_FCFG1_FSIZE(0xFF))>>SIM_FCFG1_FSIZE_SHIFT)
{
case 0x0:
printf("12 kBytes of P-flash ");
break;
case 0x1:
printf("16 kBytes of P-flash ");
break;
case 0x2:
printf("32 kBytes of P-flash ");
break;
case 0x3:
printf("48 kBytes of P-flash ");
break;
case 0x4:
printf("64 kBytes of P-flash ");
break;
case 0x5:
printf("96 kBytes of P-flash ");
break;
case 0x6:
printf("128 kBytes of P-flash ");
break;
case 0x7:
printf("192 kBytes of P-flash ");
break;
case 0x8:
printf("256 kBytes of P-flash ");
break;
case 0x9:
printf("320 kBytes of P-flash ");
break;
case 0xA:
printf("384 kBytes of P-flash ");
break;
case 0xB:
printf("448 kBytes of P-flash ");
break;
case 0xC:
printf("512 kBytes of P-flash ");
break;
case 0xFF:
printf("Full size P-flash ");
break;
default:
printf("ERR!! Undefined P-flash size\n");
break;
}
/* Determine the RAM size */
switch((SIM_SOPT1 & SIM_SOPT1_RAMSIZE(0xF))>>SIM_SOPT1_RAMSIZE_SHIFT)
{
case 0x5:
printf(" 32 kBytes of RAM\n\n");
break;
case 0x7:
printf(" 64 kBytes of RAM\n\n");
break;
case 0x8:
printf(" 96 kBytes of RAM\n\n");
break;
case 0x9:
printf(" 128 kBytes of RAM\n\n");
break;
default:
printf(" ERR!! Undefined RAM size\n\n");
break;
}
}
/********************************************************************/
