/*
 * Copyright (C) Freescale Semiconductor, Inc. 2006-2007
 *
 * Author: Scott Wood <scottwood@freescale.com>
 *
 * (C) Copyright 2010
 * Heiko Schocher, DENX Software Engineering, hs@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 <libfdt.h>
#include <pci.h>
#include <mpc83xx.h>
#include <ns16550.h>
#include <nand.h>

#include <asm/bitops.h>
#include <asm/io.h>

DECLARE_GLOBAL_DATA_PTR;

extern void disable_addr_trans (void);
extern void enable_addr_trans (void);

int checkboard(void)
{
        puts("Board: ve8313\n");
        return 0;
}

static long fixed_sdram(void)
{
        u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;

#ifndef CONFIG_SYS_RAMBOOT
        volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
        u32 msize_log2 = __ilog2(msize);

        out_be32(&im->sysconf.ddrlaw[0].bar,
                (CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000));
        out_be32(&im->sysconf.ddrlaw[0].ar, (LBLAWAR_EN | (msize_log2 - 1)));
        out_be32(&im->sysconf.ddrcdr, CONFIG_SYS_DDRCDR_VALUE);

        /*
         * Erratum DDR3 requires a 50ms delay after clearing DDRCDR[DDR_cfg],
         * or the DDR2 controller may fail to initialize correctly.
         */
        __udelay(50000);

        out_be32(&im->ddr.csbnds[0].csbnds, (msize - 1) >> 24);
        out_be32(&im->ddr.cs_config[0], CONFIG_SYS_DDR_CONFIG);

        /* Currently we use only one CS, so disable the other bank. */
        out_be32(&im->ddr.cs_config[1], 0);

        out_be32(&im->ddr.sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CNTL);
        out_be32(&im->ddr.timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
        out_be32(&im->ddr.timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
        out_be32(&im->ddr.timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
        out_be32(&im->ddr.timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);

        out_be32(&im->ddr.sdram_cfg, CONFIG_SYS_SDRAM_CFG);

        out_be32(&im->ddr.sdram_cfg2, CONFIG_SYS_SDRAM_CFG2);
        out_be32(&im->ddr.sdram_mode, CONFIG_SYS_DDR_MODE);
        out_be32(&im->ddr.sdram_mode2, CONFIG_SYS_DDR_MODE_2);

        out_be32(&im->ddr.sdram_interval, CONFIG_SYS_DDR_INTERVAL);
        sync();

        /* enable DDR controller */
        setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN);

        /* now check the real size */
        disable_addr_trans ();
        msize = get_ram_size (CONFIG_SYS_DDR_BASE, msize);
        enable_addr_trans ();
#endif

        return msize;
}

phys_size_t initdram(int board_type)
{
        volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
        volatile fsl_lbc_t *lbc = &im->im_lbc;
        u32 msize;

        if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
                return -1;

        /* DDR SDRAM - Main SODIMM */
        msize = fixed_sdram();

        /* Local Bus setup lbcr and mrtpr */
        out_be32(&lbc->lbcr, CONFIG_SYS_LBC_LBCR);
        out_be32(&lbc->mrtpr, CONFIG_SYS_LBC_MRTPR);
        sync();

        /* return total bus SDRAM size(bytes)  -- DDR */
        return msize;
}

#define VE8313_WDT_EN   0x00020000
#define VE8313_WDT_TRIG 0x00040000

int board_early_init_f (void)
{
        volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
        volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)im->gpio;

#if defined(CONFIG_HW_WATCHDOG)
        /* enable WDT */
        clrbits_be32(&gpio->dat, VE8313_WDT_EN | VE8313_WDT_TRIG);
#else
        /* disable WDT */
        setbits_be32(&gpio->dat, VE8313_WDT_EN | VE8313_WDT_TRIG);
#endif
        /* set WDT pins as output */
        setbits_be32(&gpio->dir, VE8313_WDT_EN | VE8313_WDT_TRIG);

        return 0;
}

#if defined(CONFIG_HW_WATCHDOG)
void hw_watchdog_reset(void)
{
        volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
        volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)im->gpio;
        unsigned long reg;

        reg = in_be32(&gpio->dat);
        if (reg & VE8313_WDT_TRIG)
                clrbits_be32(&gpio->dat, VE8313_WDT_TRIG);
        else
                setbits_be32(&gpio->dat, VE8313_WDT_TRIG);
}
#endif


#if defined(CONFIG_PCI)
static struct pci_region pci_regions[] = {
        {
                bus_start: CONFIG_SYS_PCI1_MEM_BASE,
                phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
                size: CONFIG_SYS_PCI1_MEM_SIZE,
                flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
        },
        {
                bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
                phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
                size: CONFIG_SYS_PCI1_MMIO_SIZE,
                flags: PCI_REGION_MEM
        },
        {
                bus_start: CONFIG_SYS_PCI1_IO_BASE,
                phys_start: CONFIG_SYS_PCI1_IO_PHYS,
                size: CONFIG_SYS_PCI1_IO_SIZE,
                flags: PCI_REGION_IO
        }
};

void pci_init_board(void)
{
        volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
        volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
        volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
        struct pci_region *reg[] = { pci_regions };

        /* Enable all 3 PCI_CLK_OUTPUTs. */
        setbits_be32(&clk->occr, 0xe0000000);

        /*
         * Configure PCI Local Access Windows
         */
        out_be32(&pci_law[0].bar, CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR);
        out_be32(&pci_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);

        out_be32(&pci_law[1].bar, CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR);
        out_be32(&pci_law[1].ar, LBLAWAR_EN | LBLAWAR_1MB);

        mpc83xx_pci_init(1, reg);
}
#endif

#if defined(CONFIG_OF_BOARD_SETUP)
void ft_board_setup(void *blob, bd_t *bd)
{
        ft_cpu_setup(blob, bd);
#ifdef CONFIG_PCI
        ft_pci_setup(blob, bd);
#endif
}
#endif