/**************************************************************************
*                                                                         *
*   PROJECT     : ARM port for UCOS-II                                    *
*                                                                         *
*   MODULE      : FRMWRK.c                                                *
*                                                                         *
*   AUTHOR      : Michael Anburaj                                         *
*                 URL  : http://geocities.com/michaelanburaj/             *
*                 EMAIL: michaelanburaj@hotmail.com                       *
*                                                                         *
*   PROCESSOR   : S3c2410x (32 bit ARM920T RISC core from Samsung)        *
*                                                                         *
*   IDE         : SDT 2.51 & ADS 1.2                                      *
*                                                                         *
*   DESCRIPTION :                                                         *
*   This is the Framework module. Creates an operating infrastructure.    *
*                                                                         *
**************************************************************************/


#include "includes.h"
#include "frmwrk.h"
#include "consol.h"
#include "mmu.h"

#include <stdarg.h>
#include <stdio.h>


/* ********************************************************************* */
/* Global definitions */


/* ********************************************************************* */
/* File local definitions */

#define __nSVCStkBase (STK_SADDR+_SVC_STKSIZE)
#define __nSVCStkEnd  STK_SADDR
#define __nSVCStkSize _SVC_STKSIZE

#define __nIRQStkBase (STK_SADDR+_SVC_STKSIZE+_UND_STKSIZE+_ABT_STKSIZE+_IRQ_STKSIZE)
#define __nIRQStkEnd  (STK_SADDR+_SVC_STKSIZE+_UND_STKSIZE+_ABT_STKSIZE)
#define __nIRQStkSize _IRQ_STKSIZE


/* ********************************************************************* */
/* Local functions */

/*
*********************************************************************************************
*                                       __Haltx
*
* Description: These exception handlers are used to report a particular exception on the
*              CONSOL & halt.
*
* Arguments  : none.
*
* Return     : none.
*
* Note(s)    : 
*********************************************************************************************
*/

static void __HaltUndef(void)
{
        CONSOL_Printf("Undefined instruction exception!!!\n");
        while(1);
}

static void __HaltSwi(void)
{
        CONSOL_Printf("SWI exception!!!\n");

        while(1);
}

static void __HaltPabort()
{
        CONSOL_Printf("Pabort exception!!!\n");
        while(1);
}

static void __HaltDabort(void)
{
        CONSOL_Printf("Dabort exception !!!\n");
        while(1);
}

static void __HaltFiq(void)
{
        CONSOL_Printf("FIQ exception!!!\n");
        while(1);
}

static void __HaltIrq(void)
{
        CONSOL_Printf("IRQ exception!!!\n");
        while(1);
}

/*
*********************************************************************************************
*                                       __vInitHaltHandlers
*
* Description: This routine hooks all the Halt exception handlers. Exceptions which are to
*              be handled by the application can be overwritten with the new handler at the
*              appropriate Software hook location.
*
* Arguments  : none.
*
* Return     : none.
*
* Note(s)    : 
*********************************************************************************************
*/

static void __vInitHaltHandlers(void)
{
        pISR_UNDEF = (unsigned)__HaltUndef;
        pISR_SWI   = (unsigned)__HaltSwi;
        pISR_PABORT= (unsigned)__HaltPabort;
        pISR_DABORT= (unsigned)__HaltDabort;
        pISR_FIQ   = (unsigned)__HaltFiq;
        pISR_IRQ = (unsigned)__HaltIrq;
}

/*
*********************************************************************************************
*                                       __vLogo
*
* Description: This routine display the Logo on the CONSOL port.
*
* Arguments  : none.
*
* Return     : none.
*
* Note(s)    : 
*********************************************************************************************
*/

static void __vLogo(void)
{
        CONSOL_Printf("\n\nUCOS_FRAMEWORK Ver %s for %s :%s\n",
                      __mVer,__mProcessor,__mDate);
        CONSOL_Printf("Built using %s on %s <%s>\n",
#ifdef ADS
                      "ADS"
#elif SDT
                      "SDT"
#else
                      "Unknown IDE"
#endif
                      ,__DATE__,__TIME__);
        CONSOL_Printf("Endian: %s\n",
#ifdef __BIG_ENDIAN
                      "BIG"
#else
                      "LITTLE"
#endif
                      );
        CONSOL_Printf("CONSOL: COM%d, %dbps, 8Bit, NP\n",__nConsolPort,__nConsolBaud);
        CONSOL_Printf("CPU Clk: %dMHz   MMU: %s   Cache: %s   Write Buf: %s\n",FCLK/1000000,
#ifdef MMU_enabled
                       "ON","ON","ON");
#else
                       "OFF","OFF","OFF");
#endif
        CONSOL_Printf("FLASH_SADDR:%08xh SRAM_SADDR:%08xh SRAM_EADDR:%08xh\nSDRAM_SADDR:\
%08xh SFR_BADDR :%08xh ISR_BADDR :%08xh\n",FLASH_SADDR,SRAM_SADDR,SRAM_EADDR,SDRAM_SADDR,
SFR_BADDR,ISR_BADDR);
        CONSOL_Printf("Free RAM: %08xh ~ %08xh\n", C_wRTMem, C_wRTMemLimit);
        CONSOL_Printf("Release by %s\n\n",__rAuthor);
}

/*
*********************************************************************************************
*                                       __vWDTInterrupt
*
* Description: This routine clears the pending WDT interrupt & calls the OS tick handler.
*
* Arguments  : none.
*
* Return     : none.
*
* Note(s)    : 
*********************************************************************************************
*/

static void __vWDTInterrupt()
{
        rSRCPND = BIT_WDT;                  // Clear pending bit -- Watchdog timer
        rINTPND = BIT_WDT;
        
        OSTimeTick();
}

/*
*********************************************************************************************
*                                       __vPortInit
*
* Description: This routine sets the default GPIO condition.
*
* Arguments  : none.
*
* Return     : none.
*
* Note(s)    : 
*********************************************************************************************
*/

static void __vPortInit(void)
{
    //CAUTION:Follow the configuration order for setting the ports. 
    // 1) setting value(GPnDAT) 
    // 2) setting control register  (GPnCON)
    // 3) configure pull-up resistor(GPnUP)  

    //32bit data bus configuration  
    //=== PORT A GROUP
    //Ports  : GPA22 GPA21  GPA20 GPA19 GPA18 GPA17 GPA16 GPA15 GPA14 GPA13 GPA12  
    //Signal : nFCE nRSTOUT nFRE   nFWE  ALE   CLE  nGCS5 nGCS4 nGCS3 nGCS2 nGCS1 
    //Binary :  1     1      1  , 1   1   1    1   ,  1     1     1     1
    //Ports  : GPA11   GPA10  GPA9   GPA8   GPA7   GPA6   GPA5   GPA4   GPA3   GPA2   GPA1  GPA0
    //Signal : ADDR26 ADDR25 ADDR24 ADDR23 ADDR22 ADDR21 ADDR20 ADDR19 ADDR18 ADDR17 ADDR16 ADDR0 
    //Binary :  1       1      1      1   , 1       1      1      1   ,  1       1     1      1         
    rGPACON = 0x7fffff; 

    //===* PORT B GROUP
    //Ports  : GPB10    GPB9    GPB8    GPB7    GPB6     GPB5    GPB4   GPB3   GPB2     GPB1      GPB0
    //Signal : nXDREQ0 nXDACK0 nXDREQ1 nXDACK1 nSS_KBD nDIS_OFF L3CLOCK L3DATA L3MODE nIrDATXDEN Keyboard
    //Setting: INPUT  OUTPUT   INPUT  OUTPUT   INPUT   OUTPUT   OUTPUT OUTPUT OUTPUT   OUTPUT    OUTPUT 
    //Binary :   00  ,  01       00  ,   01      00   ,  01       01  ,   01     01   ,  01        01  
    rGPBCON = 0x044555;
    rGPBUP  = 0x7ff;     // The pull up function is disabled GPB[10:0]

    //=== PORT C GROUP
    //Ports  : GPC15 GPC14 GPC13 GPC12 GPC11 GPC10 GPC9 GPC8  GPC7   GPC6   GPC5 GPC4 GPC3  GPC2  GPC1 GPC0
    //Signal : VD7   VD6   VD5   VD4   VD3   VD2   VD1  VD0 LCDVF2 LCDVF1 LCDVF0 VM VFRAME VLINE VCLK LEND  
    //Binary :  10   10  , 10    10  , 10    10  , 10   10  , 10     10  ,  10   10 , 10     10 , 10   10
    rGPCCON = 0xaaaaaaaa;       
    rGPCUP  = 0xffff;     // The pull up function is disabled GPC[15:0] 

    //=== PORT D GROUP
    //Ports  : GPD15 GPD14 GPD13 GPD12 GPD11 GPD10 GPD9 GPD8 GPD7 GPD6 GPD5 GPD4 GPD3 GPD2 GPD1 GPD0
    //Signal : VD23  VD22  VD21  VD20  VD19  VD18  VD17 VD16 VD15 VD14 VD13 VD12 VD11 VD10 VD9  VD8
    //Binary : 10    10  , 10    10  , 10    10  , 10   10 , 10   10 , 10   10 , 10   10 ,10   10
    rGPDCON = 0xaaaaaaaa;       
    rGPDUP  = 0xffff;     // The pull up function is disabled GPD[15:0]

    //=== PORT E GROUP
    //Ports  : GPE15  GPE14 GPE13   GPE12   GPE11   GPE10   GPE9    GPE8     GPE7  GPE6  GPE5   GPE4  
    //Signal : IICSDA IICSCL SPICLK SPIMOSI SPIMISO SDDATA3 SDDATA2 SDDATA1 SDDATA0 SDCMD SDCLK I2SSDO 
    //Binary :  10     10  ,  10      10  ,  10      10   ,  10      10   ,   10    10  , 10     10  ,     
    //-------------------------------------------------------------------------------------------------------
    //Ports  :  GPE3   GPE2  GPE1    GPE0    
    //Signal : I2SSDI CDCLK I2SSCLK I2SLRCK     
    //Binary :  10     10  ,  10      10 
    rGPECON = 0xaaaaaaaa;       
    rGPEUP  = 0xffff;     // The pull up function is disabled GPE[15:0]

    //=== PORT F GROUP
    //Ports  : GPF7   GPF6   GPF5   GPF4      GPF3     GPF2  GPF1   GPF0
    //Signal : nLED_8 nLED_4 nLED_2 nLED_1 nIRQ_PCMCIA EINT2 KBDINT EINT0
    //Setting: Output Output Output Output    EINT3    EINT2 EINT1  EINT0
    //Binary :  01      01 ,  01     01  ,     10       10  , 10     10
    rGPFCON = 0x55aa;