/*
 * (C) Copyright 2001
 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.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 <command.h>
#include "w7o.h"
#include <asm/processor.h>

#include "vpd.h"
#include "errors.h"
#include <watchdog.h>

unsigned long get_dram_size (void);
void sdram_init(void);

/*
 * Macros to transform values
 * into environment strings.
 */
#define XMK_STR(x)      #x
#define MK_STR(x)       XMK_STR(x)

/* ------------------------------------------------------------------------- */

int board_early_init_f (void)
{
#if defined(CONFIG_W7OLMG)
        /*
         * Setup GPIO pins - reset devices.
         */
        out32 (PPC405GP_GPIO0_ODR, 0x10000000); /* one open drain pin */
        out32 (PPC405GP_GPIO0_OR, 0x3E000000);  /* set output pins to default */
        out32 (PPC405GP_GPIO0_TCR, 0x7f800000); /* setup for output */

        /*
         * IRQ 0-15  405GP internally generated; active high; level sensitive
         * IRQ 16    405GP internally generated; active low; level sensitive
         * IRQ 17-24 RESERVED
         * IRQ 25 (EXT IRQ 0) XILINX; active low; level sensitive
         * IRQ 26 (EXT IRQ 1) PCI INT A; active low; level sensitive
         * IRQ 27 (EXT IRQ 2) PCI INT B; active low; level sensitive
         * IRQ 28 (EXT IRQ 3) SAM 2; active low; level sensitive
         * IRQ 29 (EXT IRQ 4) Battery Bad; active low; level sensitive
         * IRQ 30 (EXT IRQ 5) Level One PHY; active low; level sensitive
         * IRQ 31 (EXT IRQ 6) SAM 1; active high; level sensitive
         */
        mtdcr (UIC0SR, 0xFFFFFFFF);     /* clear all ints */
        mtdcr (UIC0ER, 0x00000000);     /* disable all ints */

        mtdcr (UIC0CR, 0x00000000);     /* set all to be non-critical */
        mtdcr (UIC0PR, 0xFFFFFF80);     /* set int polarities */
        mtdcr (UIC0TR, 0x10000000);     /* set int trigger levels */
        mtdcr (UIC0VCR, 0x00000001);    /* set vect base=0,
                                           INT0 highest priority */

        mtdcr (UIC0SR, 0xFFFFFFFF);     /* clear all ints */

#elif defined(CONFIG_W7OLMC)
        /*
         * Setup GPIO pins
         */
        out32 (PPC405GP_GPIO0_ODR, 0x01800000); /* XCV Done Open Drain */
        out32 (PPC405GP_GPIO0_OR, 0x03800000);  /* set out pins to default */
        out32 (PPC405GP_GPIO0_TCR, 0x66C00000); /* setup for output */

        /*
         * IRQ 0-15  405GP internally generated; active high; level sensitive
         * IRQ 16    405GP internally generated; active low; level sensitive
         * IRQ 17-24 RESERVED
         * IRQ 25 (EXT IRQ 0) DBE 0; active low; level sensitive
         * IRQ 26 (EXT IRQ 1) DBE 1; active low; level sensitive
         * IRQ 27 (EXT IRQ 2) DBE 2; active low; level sensitive
         * IRQ 28 (EXT IRQ 3) DBE Common; active low; level sensitive
         * IRQ 29 (EXT IRQ 4) PCI; active low; level sensitive
         * IRQ 30 (EXT IRQ 5) RCMM Reset; active low; level sensitive
         * IRQ 31 (EXT IRQ 6) PHY; active high; level sensitive
         */
        mtdcr (UIC0SR, 0xFFFFFFFF);     /* clear all ints */
        mtdcr (UIC0ER, 0x00000000);     /* disable all ints */

        mtdcr (UIC0CR, 0x00000000);     /* set all to be non-critical */
        mtdcr (UIC0PR, 0xFFFFFF80);     /* set int polarities */
        mtdcr (UIC0TR, 0x10000000);     /* set int trigger levels */
        mtdcr (UIC0VCR, 0x00000001);    /* set vect base=0,
                                           INT0 highest priority */

        mtdcr (UIC0SR, 0xFFFFFFFF);     /* clear all ints */

#else  /* Unknown */
#    error "Unknown W7O board configuration"
#endif

        WATCHDOG_RESET ();      /* Reset the watchdog */
        temp_uart_init ();      /* init the uart for debug */
        WATCHDOG_RESET ();      /* Reset the watchdog */
        test_led ();            /* test the LEDs */
        test_sdram (get_dram_size ());  /* test the dram */
        log_stat (ERR_POST1);   /* log status,post1 complete */
        return 0;
}


/* ------------------------------------------------------------------------- */

/*
 * Check Board Identity:
 */
int checkboard (void)
{
        VPD vpd;

        puts ("Board: ");

        /* VPD data present in I2C EEPROM */
        if (vpd_get_data (CONFIG_SYS_DEF_EEPROM_ADDR, &vpd) == 0) {
                /*
                 * Known board type.
                 */
                if (vpd.productId[0] &&
                    ((strncmp (vpd.productId, "GMM", 3) == 0) ||
                     (strncmp (vpd.productId, "CMM", 3) == 0))) {

                        /* Output board information on startup */
                        printf ("\"%s\", revision '%c', serial# %ld, manufacturer %u\n", vpd.productId, vpd.revisionId, vpd.serialNum, vpd.manuID);
                        return (0);
                }
        }

        puts ("### Unknown HW ID - assuming NOTHING\n");
        return (0);
}

/* ------------------------------------------------------------------------- */

phys_size_t initdram (int board_type)
{
        /*
         * ToDo: Move the asm init routine sdram_init() to this C file,
         * or even better use some common ppc4xx code available
         * in arch/powerpc/cpu/ppc4xx
         */
        sdram_init();

        return get_dram_size ();
}

unsigned long get_dram_size (void)
{
        int tmp, i, regs[4];
        int size = 0;

        /* Get bank Size registers */
        mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);    /* get bank 0 config reg */
        regs[0] = mfdcr (SDRAM0_CFGDATA);

        mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR);    /* get bank 1 config reg */
        regs[1] = mfdcr (SDRAM0_CFGDATA);

        mtdcr (SDRAM0_CFGADDR, SDRAM0_B2CR);    /* get bank 2 config reg */
        regs[2] = mfdcr (SDRAM0_CFGDATA);

        mtdcr (SDRAM0_CFGADDR, SDRAM0_B3CR);    /* get bank 3 config reg */
        regs[3] = mfdcr (SDRAM0_CFGDATA);

        /* compute the size, add each bank if enabled */
        for (i = 0; i < 4; i++) {
                if (regs[i] & 0x0001) { /* if enabled, */
                        tmp = ((regs[i] >> (31 - 14)) & 0x7);   /* get size bits */
                        tmp = 0x400000 << tmp;  /* Size bits X 4MB = size */
                        size += tmp;
                }
        }

        return size;
}

int misc_init_f (void)
{
        return 0;
}

static void w7o_env_init (VPD * vpd)
{
        /*
         * Read VPD
         */
        if (vpd_get_data (CONFIG_SYS_DEF_EEPROM_ADDR, vpd) != 0)
                return;

        /*
         * Known board type.
         */
        if (vpd->productId[0] &&
            ((strncmp (vpd->productId, "GMM", 3) == 0) ||
             (strncmp (vpd->productId, "CMM", 3) == 0))) {
                char buf[30];
                char *eth;
                char *serial = getenv ("serial#");
                char *ethaddr = getenv ("ethaddr");

                /* Set 'serial#' envvar if serial# isn't set */
                if (!serial) {
                        sprintf (buf, "%s-%ld", vpd->productId,
                                 vpd->serialNum);
                        setenv ("serial#", buf);
                }

                /* Set 'ethaddr' envvar if 'ethaddr' envvar is the default */
                eth = (char *)(vpd->ethAddrs[0]);
                if (ethaddr
                    && (strcmp (ethaddr, MK_STR (CONFIG_ETHADDR)) == 0)) {
                        /* Now setup ethaddr */
                        sprintf (buf, "%02x:%02x:%02x:%02x:%02x:%02x",
                                 eth[0], eth[1], eth[2], eth[3], eth[4],
                                 eth[5]);
                        setenv ("ethaddr", buf);
                }
        }
}                               /* w7o_env_init() */


int misc_init_r (void)
{
        VPD vpd;                /* VPD information */

#if defined(CONFIG_W7OLMG)
        unsigned long greg;     /* GPIO Register */

        greg = in32 (PPC405GP_GPIO0_OR);

        /*
         * XXX - Unreset devices - this should be moved into VxWorks driver code
         */
        greg |= 0x41800000L;    /* SAM, PHY, Galileo */

        out32 (PPC405GP_GPIO0_OR, greg);        /* set output pins to default */
#endif /* CONFIG_W7OLMG */

        /*
         * Initialize W7O environment variables
         */
        w7o_env_init (&vpd);

        /*
         * Initialize the FPGA(s).
         */
        if (init_fpga () == 0)
                test_fpga ((unsigned short *) CONFIG_FPGAS_BASE);

        /* More POST testing. */
        post2 ();

        /* Done with hardware initialization and POST. */
        log_stat (ERR_POSTOK);

        /* Call silly, fail safe boot init routine */
        init_fsboot ();

        return (0);
}