/*
 * (C) Copyright 2003
 * Josef Baumgartner <josef.baumgartner@telex.de>
 *
 * MCF5282 additionals
 * (C) Copyright 2005
 * BuS Elektronik GmbH & Co. KG <esw@bus-elektronik.de>
 *
 * MCF5275 additions
 * Copyright (C) 2008 Arthur Shipkowski (art@videon-central.com)
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <asm/immap.h>
#include <netdev.h>
#include "cpu.h"

DECLARE_GLOBAL_DATA_PTR;

#ifdef  CONFIG_M5208
int do_reset(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
{
        volatile rcm_t *rcm = (rcm_t *)(MMAP_RCM);

        udelay(1000);

        rcm->rcr = RCM_RCR_SOFTRST;

        /* we don't return! */
        return 0;
};

int checkcpu(void)
{
        char buf1[32], buf2[32];

        printf("CPU:   Freescale Coldfire MCF5208\n"
               "       CPU CLK %s MHz BUS CLK %s MHz\n",
               strmhz(buf1, gd->cpu_clk),
               strmhz(buf2, gd->bus_clk));
        return 0;
};

#if defined(CONFIG_WATCHDOG)
/* Called by macro WATCHDOG_RESET */
void watchdog_reset(void)
{
        volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG);
        wdt->sr = 0x5555;
        wdt->sr = 0xAAAA;
}

int watchdog_disable(void)
{
        volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG);

        wdt->sr = 0x5555; /* reset watchdog counteDECLARE_GLOBAL_DATA_PTR;
r */
        wdt->sr = 0xAAAA;
        wdt->cr = 0;    /* disable watchdog timer */

        puts("WATCHDOG:disabled\n");
        return (0);
}

int watchdog_init(void)
{
        volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG);

        wdt->cr = 0;    /* disable watchdog */

        /* set timeout and enable watchdog */
        wdt->mr =
                ((CONFIG_WATCHDOG_TIMEOUT * CONFIG_SYS_HZ) / (32768 * 1000)) - 1;
        wdt->sr = 0x5555; /* reset watchdog counter */
        wdt->sr = 0xAAAA;

        puts("WATCHDOG:enabled\n");
        return (0);
}
#endif                          /* #ifdef CONFIG_WATCHDOG */
#endif                          /* #ifdef CONFIG_M5208 */

#ifdef  CONFIG_M5271
/*
 * Both MCF5270 and MCF5271 are members of the MPC5271 family. Try to
 * determine which one we are running on, based on the Chip Identification
 * Register (CIR).
 */
int checkcpu(void)
{
        char buf[32];
        unsigned short cir;     /* Chip Identification Register */
        unsigned short pin;     /* Part identification number */
        unsigned char prn;      /* Part revision number */
        char *cpu_model;

        cir = mbar_readShort(MCF_CCM_CIR);
        pin = cir >> MCF_CCM_CIR_PIN_LEN;
        prn = cir & MCF_CCM_CIR_PRN_MASK;

        switch (pin) {
        case MCF_CCM_CIR_PIN_MCF5270:
                cpu_model = "5270";
                break;
        case MCF_CCM_CIR_PIN_MCF5271:
                cpu_model = "5271";
                break;
        default:
                cpu_model = NULL;
                break;
        }

        if (cpu_model)
                printf("CPU:   Freescale ColdFire MCF%s rev. %hu, at %s MHz\n",
                       cpu_model, prn, strmhz(buf, CONFIG_SYS_CLK));
        else
                printf("CPU:   Unknown - Freescale ColdFire MCF5271 family"
                       " (PIN: 0x%x) rev. %hu, at %s MHz\n",
                       pin, prn, strmhz(buf, CONFIG_SYS_CLK));

        return 0;
}

int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
{
        /* Call the board specific reset actions first. */
        if(board_reset) {
                board_reset();
        }

        mbar_writeByte(MCF_RCM_RCR,
                       MCF_RCM_RCR_SOFTRST | MCF_RCM_RCR_FRCRSTOUT);
        return 0;
};

#if defined(CONFIG_WATCHDOG)
void watchdog_reset(void)
{
        mbar_writeShort(MCF_WTM_WSR, 0x5555);
        mbar_writeShort(MCF_WTM_WSR, 0xAAAA);
}

int watchdog_disable(void)
{
        mbar_writeShort(MCF_WTM_WCR, 0);
        return (0);
}

int watchdog_init(void)
{
        mbar_writeShort(MCF_WTM_WCR, MCF_WTM_WCR_EN);
        return (0);
}
#endif                          /* #ifdef CONFIG_WATCHDOG */

#endif

#ifdef  CONFIG_M5272
int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
{
        volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG);

        wdp->wdog_wrrr = 0;
        udelay(1000);

        /* enable watchdog, set timeout to 0 and wait */
        wdp->wdog_wrrr = 1;
        while (1) ;

        /* we don't return! */
        return 0;
};

int checkcpu(void)
{
        volatile sysctrl_t *sysctrl = (sysctrl_t *) (MMAP_CFG);
        uchar msk;
        char *suf;

        puts("CPU:   ");
        msk = (sysctrl->sc_dir > 28) & 0xf;
        switch (msk) {
        case 0x2:
                suf = "1K75N";
                break;
        case 0x4:
                suf = "3K75N";
                break;
        default:
                suf = NULL;
                printf("Freescale MCF5272 (Mask:%01x)\n", msk);
                break;
        }

        if (suf)
                printf("Freescale MCF5272 %s\n", suf);
        return 0;
};

#if defined(CONFIG_WATCHDOG)
/* Called by macro WATCHDOG_RESET */
void watchdog_reset(void)
{
        volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG);
        wdt->wdog_wcr = 0;
}

int watchdog_disable(void)
{
        volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG);

        wdt->wdog_wcr = 0;      /* reset watchdog counter */
        wdt->wdog_wirr = 0;     /* disable watchdog interrupt */
        wdt->wdog_wrrr = 0;     /* disable watchdog timer */

        puts("WATCHDOG:disabled\n");
        return (0);
}

int watchdog_init(void)
{
        volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG);

        wdt->wdog_wirr = 0;     /* disable watchdog interrupt */

        /* set timeout and enable watchdog */
        wdt->wdog_wrrr =
            ((CONFIG_WATCHDOG_TIMEOUT * CONFIG_SYS_HZ) / (32768 * 1000)) - 1;
        wdt->wdog_wcr = 0;      /* reset watchdog counter */

        puts("WATCHDOG:enabled\n");
        return (0);
}
#endif                          /* #ifdef CONFIG_WATCHDOG */

#endif                          /* #ifdef CONFIG_M5272 */

#ifdef  CONFIG_M5275
int do_reset(cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
{
        volatile rcm_t *rcm = (rcm_t *)(MMAP_RCM);

        udelay(1000);

        rcm->rcr = RCM_RCR_SOFTRST;

        /* we don't return! */
        return 0;
};

int checkcpu(void)
{
        char buf[32];

        printf("CPU:   Freescale Coldfire MCF5275 at %s MHz\n",
                        strmhz(buf, CONFIG_SYS_CLK));
        return 0;
};


#if defined(CONFIG_WATCHDOG)
/* Called by macro WATCHDOG_RESET */
void watchdog_reset(void)
{
        volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG);
        wdt->wsr = 0x5555;
        wdt->wsr = 0xAAAA;
}

int watchdog_disable(void)
{
        volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG);

        wdt->wsr = 0x5555; /* reset watchdog counter */
        wdt->wsr = 0xAAAA;
        wdt->wcr = 0;   /* disable watchdog timer */

        puts("WATCHDOG:disabled\n");
        return (0);
}

int watchdog_init(void)
{
        volatile wdog_t *wdt = (volatile wdog_t *)(MMAP_WDOG);

        wdt->wcr = 0;   /* disable watchdog */

        /* set timeout and enable watchdog */
        wdt->wmr =
                ((CONFIG_WATCHDOG_TIMEOUT * CONFIG_SYS_HZ) / (32768 * 1000)) - 1;
        wdt->wsr = 0x5555; /* reset watchdog counter */
        wdt->wsr = 0xAAAA;

        puts("WATCHDOG:enabled\n");
        return (0);
}
#endif                          /* #ifdef CONFIG_WATCHDOG */

#endif                          /* #ifdef CONFIG_M5275 */

#ifdef  CONFIG_M5282
int checkcpu(void)
{
        unsigned char resetsource = MCFRESET_RSR;

        printf("CPU:   Freescale Coldfire MCF5282 (PIN: %2.2x REV: %2.2x)\n",
               MCFCCM_CIR >> 8, MCFCCM_CIR & MCFCCM_CIR_PRN_MASK);
        printf("Reset:%s%s%s%s%s%s%s\n",
               (resetsource & MCFRESET_RSR_LOL) ? " Loss of Lock" : "",
               (resetsource & MCFRESET_RSR_LOC) ? " Loss of Clock" : "",
               (resetsource & MCFRESET_RSR_EXT) ? " External" : "",
               (resetsource & MCFRESET_RSR_POR) ? " Power On" : "",
               (resetsource & MCFRESET_RSR_WDR) ? " Watchdog" : "",
               (resetsource & MCFRESET_RSR_SOFT) ? " Software" : "",
               (resetsource & MCFRESET_RSR_LVD) ? " Low Voltage" : "");
        return 0;
}

int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
{
        MCFRESET_RCR = MCFRESET_RCR_SOFTRST;
        return 0;
};
#endif

#ifdef CONFIG_M5249
int checkcpu(void)
{
        char buf[32];

        printf("CPU:   Freescale Coldfire MCF5249 at %s MHz\n",
               strmhz(buf, CONFIG_SYS_CLK));
        return 0;
}

int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
{
        /* enable watchdog, set timeout to 0 and wait */
        mbar_writeByte(MCFSIM_SYPCR, 0xc0);
        while (1) ;

        /* we don't return! */
        return 0;
};
#endif

#ifdef CONFIG_M5253
int checkcpu(void)
{
        char buf[32];

        unsigned char resetsource = mbar_readLong(SIM_RSR);
        printf("CPU:   Freescale Coldfire MCF5253 at %s MHz\n",
               strmhz(buf, CONFIG_SYS_CLK));

        if ((resetsource & SIM_RSR_HRST) || (resetsource & SIM_RSR_SWTR)) {
                printf("Reset:%s%s\n",
                       (resetsource & SIM_RSR_HRST) ? " Hardware/ System Reset"
                       : "",
                       (resetsource & SIM_RSR_SWTR) ? " Software Watchdog" :
                       "");
        }
        return 0;
}

int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
{
        /* enable watchdog, set timeout to 0 and wait */
        mbar_writeByte(SIM_SYPCR, 0xc0);
        while (1) ;

        /* we don't return! */
        return 0;
};
#endif

#if defined(CONFIG_MCFFEC)
/* Default initializations for MCFFEC controllers.  To override,
 * create a board-specific function called:
 *      int board_eth_init(bd_t *bis)
 */

int cpu_eth_init(bd_t *bis)
{
        return mcffec_initialize(bis);
}
#endif