/*
 * (C) Copyright 2003-2004
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2004
 * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com.
 *
 * (C) Copyright 2006
 * MicroSys GmbH
 *
 * (C) Copyright 2009
 * Wolfgang Grandegger, DENX Software Engineering, wg@denx.de.
 *
 * 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 <mpc5xxx.h>
#include <pci.h>
#include <netdev.h>
#include <miiphy.h>
#include <libfdt.h>
#include <mb862xx.h>
#include <video_fb.h>
#include <asm/processor.h>
#include <asm/io.h>

#ifdef CONFIG_OF_LIBFDT
#include <fdt_support.h>
#endif /* CONFIG_OF_LIBFDT */

/* mt46v16m16-75 */
#ifdef CONFIG_MPC5200_DDR
/* Settings for XLB = 132 MHz */
#define SDRAM_MODE      0x018D0000
#define SDRAM_EMODE     0x40090000
#define SDRAM_CONTROL   0x714f0f00
#define SDRAM_CONFIG1   0x73722930
#define SDRAM_CONFIG2   0x47770000
#define SDRAM_TAPDELAY  0x10000000
#else
#error SDRAM is not supported on this board
#endif

DECLARE_GLOBAL_DATA_PTR;

static void sdram_start (int hi_addr)
{
        struct mpc5xxx_sdram *sdram = (struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
        long hi_addr_bit = hi_addr ? 0x01000000 : 0;

        /* unlock mode register */
        out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000000 | hi_addr_bit);

        /* precharge all banks */
        out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000002 | hi_addr_bit);

        /* set mode register: extended mode */
        out_be32 (&sdram->mode, SDRAM_EMODE);

        /* set mode register: reset DLL */
        out_be32 (&sdram->mode, SDRAM_MODE | 0x04000000);

        /* precharge all banks */
        out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000002 | hi_addr_bit);

        /* auto refresh */
        out_be32 (&sdram->ctrl, SDRAM_CONTROL | 0x80000004 | hi_addr_bit);

        /* set mode register */
        out_be32 (&sdram->mode, SDRAM_MODE);

        /* normal operation */
        out_be32 (&sdram->ctrl, SDRAM_CONTROL | hi_addr_bit);
}

/*
 * ATTENTION: Although partially referenced initdram does NOT make real
 *            use of CONFIG_SYS_SDRAM_BASE. The code does not work if
 *            CONFIG_SYS_SDRAM_BASE is something else than 0x00000000.
 */

phys_size_t initdram (int board_type)
{
        struct mpc5xxx_mmap_ctl *mmap_ctl =
                (struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;
        struct mpc5xxx_sdram *sdram = (struct mpc5xxx_sdram *)MPC5XXX_SDRAM;
        struct mpc5xxx_cdm *cdm = (struct mpc5xxx_cdm *)MPC5XXX_CDM;
        ulong dramsize = 0;
        ulong dramsize2 = 0;
        ulong test1, test2;

        /* setup SDRAM chip selects */
        out_be32 (&mmap_ctl->sdram0, 0x0000001e);       /* 2G at 0x0 */
        out_be32 (&mmap_ctl->sdram1, 0x00000000);       /* disabled */

        /* setup config registers */
        out_be32 (&sdram->config1, SDRAM_CONFIG1);
        out_be32 (&sdram->config2, SDRAM_CONFIG2);

        /* set tap delay */
        out_be32 (&cdm->porcfg, SDRAM_TAPDELAY);

        /* find RAM size using SDRAM CS0 only */
        sdram_start (0);
        test1 = get_ram_size ((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
        sdram_start (1);
        test2 = get_ram_size ((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
        if (test1 > test2) {
                sdram_start (0);
                dramsize = test1;
        } else {
                dramsize = test2;
        }

        /* memory smaller than 1MB is impossible */
        if (dramsize < (1 << 20))
                dramsize = 0;

        /* set SDRAM CS0 size according to the amount of RAM found */
        if (dramsize > 0)
                out_be32 (&mmap_ctl->sdram0,
                          0x13 + __builtin_ffs (dramsize >> 20) - 1);
        else
                out_be32 (&mmap_ctl->sdram1, 0);        /* disabled */

        /*
         * On MPC5200B we need to set the special configuration delay in the
         * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
         * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
         *
         * "The SDelay should be written to a value of 0x00000004. It is
         * required to account for changes caused by normal wafer processing
         * parameters."
         */
        out_be32 (&sdram->sdelay, 0x04);

        return dramsize + dramsize2;
}

int checkboard (void)
{
        puts ("Board: IPEK01 \n");
        return 0;
}

void flash_preinit (void)
{
        struct mpc5xxx_lpb *lpb = (struct mpc5xxx_lpb *)MPC5XXX_LPB;

        /*
         * Now, when we are in RAM, enable flash write
         * access for detection process.
         * Note that CS_BOOT cannot be cleared when
         * executing in flash.
         */
        clrbits_be32 (&lpb->cs0_cfg, 0x1);      /* clear RO */
}

void flash_afterinit (ulong start, ulong size)
{
        struct mpc5xxx_mmap_ctl *mmap_ctl =
                (struct mpc5xxx_mmap_ctl *)CONFIG_SYS_MBAR;

#if defined(CONFIG_BOOT_ROM)
        /* adjust mapping */
        out_be32 (&mmap_ctl->cs1_start, START_REG (start));
        out_be32 (&mmap_ctl->cs1_stop, STOP_REG (start, size));
#else
        /* adjust mapping */
        out_be32 (&mmap_ctl->boot_start, START_REG (start));
        out_be32 (&mmap_ctl->cs0_start, START_REG (start));
        out_be32 (&mmap_ctl->boot_stop, STOP_REG (start, size));
        out_be32 (&mmap_ctl->cs0_stop, STOP_REG (start, size));
#endif
}

extern flash_info_t flash_info[];       /* info for FLASH chips */

int misc_init_r (void)
{
        /* adjust flash start */
        gd->bd->bi_flashstart = flash_info[0].start[0];
        return (0);
}

#ifdef  CONFIG_PCI
static struct pci_controller hose;

extern void pci_mpc5xxx_init (struct pci_controller *);

void pci_init_board (void)
{
        pci_mpc5xxx_init (&hose);
}
#endif

#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
void ft_board_setup (void *blob, bd_t * bd)
{
        ft_cpu_setup (blob, bd);
        fdt_fixup_memory (blob, (u64) bd->bi_memstart, (u64) bd->bi_memsize);
}
#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */

int board_eth_init(bd_t *bis)
{
        cpu_eth_init(bis); /* Built in FEC comes first */
        return pci_eth_init(bis);
}

#ifdef CONFIG_VIDEO
extern GraphicDevice mb862xx;

static const gdc_regs init_regs[] = {
        {0x0100, 0x00000900},
        {0x0020, 0x80190257},
        {0x0024, 0x00000000},
        {0x0028, 0x00000000},
        {0x002c, 0x00000000},
        {0x0110, 0x00000000},
        {0x0114, 0x00000000},
        {0x0118, 0x02570320},
        {0x0004, 0x041f0000},
        {0x0008, 0x031f031f},
        {0x000c, 0x067f0347},
        {0x0010, 0x02780000},
        {0x0014, 0x0257025c},
        {0x0018, 0x00000000},
        {0x001c, 0x02570320},
        {0x0100, 0x80010900},
        {0x0, 0x0}
};

const gdc_regs *board_get_regs (void)
{
        return init_regs;
}

/* Returns Lime base address */
unsigned int board_video_init (void)
{
        if (mb862xx_probe (CONFIG_SYS_LIME_BASE) != MB862XX_TYPE_LIME)
                return 0;

        mb862xx.winSizeX = 800;
        mb862xx.winSizeY = 600;
        mb862xx.gdfIndex = GDF_15BIT_555RGB;
        mb862xx.gdfBytesPP = 2;

        return CONFIG_SYS_LIME_BASE;
}

#if defined(CONFIG_CONSOLE_EXTRA_INFO)
/*
 * Return text to be printed besides the logo.
 */
void video_get_info_str (int line_number, char *info)
{
        if (line_number == 1)
                strcpy (info, " Board: IPEK01");
        else
                info[0] = '\0';
}
#endif
#endif /* CONFIG_VIDEO */