evm5509.c

dsp 5509a MMC 卡 ID号读取 12Mhzx16=192M

/*
 *  Copyright 2004 by Spectrum Digital Incorporated.
 *  All rights reserved. Property of Spectrum Digital Incorporated.
 */

/*
 *  ======== EVM5509.c ========
 *  5509 EVM board initializion implementation.
 */

#include <csl.h>
#include <csl_emif.h>
#include <csl_i2c.h>
#include <csl_pll.h>

#include <evm5509.h>

/*
EMIF_Config emifCfg0 = {
    EMIF_EGCR_RMK(  1, //EMIF_EGCR_MEMFREQ_2X,
                    EMIF_EGCR_WPE_OFF,
                    EMIF_EGCR_MEMCEN_ON,
                    EMIF_EGCR_NOHOLD_NOHOLD ),
    EMIF_EMIRST_RMK( EMIF_EMIRST_EMIRST_0F( 0xFFFF ) ),
    // CE0_1, CE0_2, & CE0_3  
    EMIF_CEx1_RMK(  EMIF_CEx1_MTYPE_SDRAM32,
                    EMIF_CEx1_RDSETUP_OF( 15 ),
                    EMIF_CEx1_RDSTROBE_OF( 63 ),
                    EMIF_CEx1_RDHOLD_OF( 3 ) ),
    EMIF_CEx2_RMK(  EMIF_CEx2_RDEXHLD_OF( 1 ),
                    EMIF_CEx2_WREXHLD_OF( 1 ),
                    EMIF_CEx2_WRSETUP_OF( 15 ),
                    EMIF_CEx2_WRSTROBE_OF( 63 ),
                    EMIF_CEx2_WRHOLD_OF( 3 ) ),
    EMIF_CEx3_RMK(  EMIF_CEx3_TIMOUT_OF( 0 ) ),
    // CE1_1, CE1_2, & CE1_3  
    EMIF_CEx1_RMK(  EMIF_CEx1_MTYPE_ASYNC16,
                    EMIF_CEx1_RDSETUP_OF( 0 ),
                    EMIF_CEx1_RDSTROBE_OF( 14 ),
                    EMIF_CEx1_RDHOLD_OF( 0 ) ),
    EMIF_CEx2_RMK(  EMIF_CEx2_RDEXHLD_OF( 0 ),
                    EMIF_CEx2_WREXHLD_OF( 0 ),
                    EMIF_CEx2_WRSETUP_OF( 0 ),
                    EMIF_CEx2_WRSTROBE_OF( 14 ),
                    EMIF_CEx2_WRHOLD_OF( 0 ) ),
    EMIF_CEx3_RMK(  EMIF_CEx3_TIMOUT_OF( 0 ) ),
    // CE2_1, CE2_2, & CE2_3  
    EMIF_CEx1_RMK(  EMIF_CEx1_MTYPE_ASYNC16,
                    EMIF_CEx1_RDSETUP_OF( 0 ),
                    EMIF_CEx1_RDSTROBE_OF( 20 ),
                    EMIF_CEx1_RDHOLD_OF( 0 ) ),
    EMIF_CEx2_RMK(  EMIF_CEx2_RDEXHLD_OF( 0 ),
                    EMIF_CEx2_WREXHLD_OF( 0 ),
                    EMIF_CEx2_WRSETUP_OF( 0 ),
                    EMIF_CEx2_WRSTROBE_OF( 20 ),
                    EMIF_CEx2_WRHOLD_OF( 0 ) ),
    EMIF_CEx3_RMK(  EMIF_CEx3_TIMOUT_OF( 0 ) ),
    // CE3_1, CE3_2, & CE3_3  
    EMIF_CEx1_RMK(  EMIF_CEx1_MTYPE_ASYNC16,
                    EMIF_CEx1_RDSETUP_OF( 0 ),
                    EMIF_CEx1_RDSTROBE_OF( 20 ),
                    EMIF_CEx1_RDHOLD_OF( 0 ) ),
    EMIF_CEx2_RMK(  EMIF_CEx2_RDEXHLD_OF( 0 ),
                    EMIF_CEx2_WREXHLD_OF( 0 ),
                    EMIF_CEx2_WRSETUP_OF( 0 ),
                    EMIF_CEx2_WRSTROBE_OF( 20 ),
                    EMIF_CEx2_WRHOLD_OF( 0 ) ),
    EMIF_CEx3_RMK(  EMIF_CEx3_TIMOUT_OF( 0 ) ),
    // SDRAM: SDC1, SDPER, INIT, & SDC2  
    EMIF_SDC1_MK(   EMIF_SDC1_TRC_OF( 5 ),
                    EMIF_SDC1_SDSIZE_16M,
                    EMIF_SDC1_SDWID_OFF,
                    EMIF_SDC1_RFEN_ENABLE,
                    EMIF_SDC1_TRCD_OF( 1 ),
                    EMIF_SDC1_TRP_OF( 1 ) ),
    EMIF_SDPER_RMK( EMIF_SDPER_PERIOD_OF( 0x578 ) ),
    EMIF_INIT_RMK(  EMIF_SDINIT_INIT_OF( 0xFFFF ) ),
    EMIF_SDC2_RMK(  EMIF_SDC2_SDACC_16BITBUS,
                    EMIF_SDC2_TMRD_OF( 1 ),
                    EMIF_SDC2_TRAS_OF( 3 ),
                    EMIF_SDC2_TACTV2ACTV_OF( 5 ) )
};
*/

/* Initialize the board APIs */
void EVM5509_init()
{
    I2C_Setup i2cSetup = {
        0,              /* 7 bit address mode */
        0x007F,         /* own address - dont care if master */
        75,             /* clkout value (Mhz) */
        400,            /* a number between 10 and 400 */
        0,              /* num of bits/bytes to be received/transmitted (8) */
        0,              /* DLB mode off */
        0               /* FREE mode of operation off */
    };
    
    /* Initialize CSL */
    CSL_init();
    
    /* Configure EMIF */
    EMIF_config(&emifCfg0);
    
    /* Set CPLD registers to default values */
    EVM5509_rset(EVM5509_USER_REG, 0);
    EVM5509_rset(EVM5509_DC_REG,   0);
    EVM5509_rset(EVM5509_MISC,     0);
    EVM5509_rset(EVM5509_BOARD,    0);
    
    /* Initialize I2C interface */
    I2C_setup(&i2cSetup);
}

/* Read a 16-bit value from a CPLD register */
Uint16 EVM5509_rget(Int16 regnum)
{
    return EVM5509_mget(EVM5509_CPLD_BASE + regnum);
}

/* Write a 16-bit value to a CPLD register */
void EVM5509_rset(Int16 regnum, Uint16 regval)
{
    EVM5509_mset(EVM5509_CPLD_BASE + regnum, regval);
}

/* Spin in a delay loop for delay iterations */
void EVM5509_wait(Uint32 delay)
{
    volatile Uint32 i, n;
    
    n = 0;
    for (i = 0; i < delay; i++)
    {
        n = n + 1;
    }
}

/* Spin in a delay loop for delay microseconds */
void EVM5509_waitusec(Uint32 delay)
{
    EVM5509_wait(delay * 13);
}