/*
 * (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 2004-2005
 * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
 *
 * (C) Copyright 2006
 * Stefan Strobl, GERSYS GmbH, stefan.strobl@gersys.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>

#ifdef CONFIG_VIDEO_SM501
#include <sm501.h>
#endif

#if defined(CONFIG_MPC5200_DDR)
#include "mt46v16m16-75.h"
#else
#include "mt48lc16m16a2-75.h"
#endif

#ifdef CONFIG_RTC_MPC5200
#include <rtc.h>
#endif

#ifdef CONFIG_PS2MULT
void ps2mult_early_init(void);
#endif

#ifndef CONFIG_SYS_RAMBOOT
static void sdram_start (int hi_addr)
{
        long hi_addr_bit = hi_addr ? 0x01000000 : 0;

        /* unlock mode register */
        *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 |
                hi_addr_bit;
        __asm__ volatile ("sync");

        /* precharge all banks */
        *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 |
                hi_addr_bit;
        __asm__ volatile ("sync");

#if SDRAM_DDR
        /* set mode register: extended mode */
        *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE;
        __asm__ volatile ("sync");

        /* set mode register: reset DLL */
        *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000;
        __asm__ volatile ("sync");
#endif

        /* precharge all banks */
        *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 |
                hi_addr_bit;
        __asm__ volatile ("sync");

        /* auto refresh */
        *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 |
                hi_addr_bit;
        __asm__ volatile ("sync");

        /* set mode register */
        *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE;
        __asm__ volatile ("sync");

        /* normal operation */
        *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit;
        __asm__ volatile ("sync");
}
#endif

/*
 * ATTENTION: Although partially referenced initdram does NOT make real use
 *            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)
{
        ulong dramsize = 0;
        ulong dramsize2 = 0;
#ifndef CONFIG_SYS_RAMBOOT
        ulong test1, test2;

        /* setup SDRAM chip selects */
        *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001c; /* 512MB at 0x0 */
        *(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x40000000; /* disabled */
        __asm__ volatile ("sync");

        /* setup config registers */
        *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1;
        *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2;
        __asm__ volatile ("sync");

#if SDRAM_DDR
        /* set tap delay */
        *(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY;
        __asm__ volatile ("sync");
#endif

        /* find RAM size using SDRAM CS0 only */
        sdram_start(0);
        test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
        sdram_start(1);
        test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x20000000);
        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) {
                *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 +
                        __builtin_ffs(dramsize >> 20) - 1;
        } else {
                *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */
        }

        /* let SDRAM CS1 start right after CS0 */
        *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001c; /* 512MB */

        /* find RAM size using SDRAM CS1 only */
        sdram_start(0);
        test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
        sdram_start(1);
        test2 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x20000000);
        if (test1 > test2) {
                sdram_start(0);
                dramsize2 = test1;
        } else {
                dramsize2 = test2;
        }

        /* memory smaller than 1MB is impossible */
        if (dramsize2 < (1 << 20)) {
                dramsize2 = 0;
        }

        /* set SDRAM CS1 size according to the amount of RAM found */
        if (dramsize2 > 0) {
                *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize
                        | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1);
        } else {
                *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */
        }

#else /* CONFIG_SYS_RAMBOOT */

        /* retrieve size of memory connected to SDRAM CS0 */
        dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF;
        if (dramsize >= 0x13) {
                dramsize = (1 << (dramsize - 0x13)) << 20;
        } else {
                dramsize = 0;
        }

        /* retrieve size of memory connected to SDRAM CS1 */
        dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF;
        if (dramsize2 >= 0x13) {
                dramsize2 = (1 << (dramsize2 - 0x13)) << 20;
        } else {
                dramsize2 = 0;
        }

#endif /* CONFIG_SYS_RAMBOOT */

        return dramsize;
}

int checkboard (void)
{
#if defined (CONFIG_TQM5200)
        puts ("Board: TQM5200 (TQ-Components GmbH)\n");
#endif

#if defined (CONFIG_BC3450)
        puts ("Dev:   GERSYS BC3450\n");
#endif

        return 0;
}

void flash_preinit(void)
{
        /*
         * Now, when we are in RAM, enable flash write
         * access for detection process.
         * Note that CS_BOOT cannot be cleared when
         * executing in flash.
         */
        *(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1;         /* clear RO        */
}


#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_CMD_IDE) && defined(CONFIG_IDE_RESET)

void init_ide_reset (void)
{
        debug ("init_ide_reset\n");

        /* Configure PSC1_4 as GPIO output for ATA reset */
        *(vu_long *) MPC5XXX_WU_GPIO_ENABLE |= GPIO_PSC1_4;
        *(vu_long *) MPC5XXX_WU_GPIO_DIR    |= GPIO_PSC1_4;
}

void ide_set_reset (int idereset)
{
        debug ("ide_reset(%d)\n", idereset);

        if (idereset) {
                *(vu_long *) MPC5XXX_WU_GPIO_DATA_O &= ~GPIO_PSC1_4;
        } else {
                *(vu_long *) MPC5XXX_WU_GPIO_DATA_O |=  GPIO_PSC1_4;
        }
}
#endif

#ifdef CONFIG_POST
/*
 * Reads GPIO pin PSC6_3. A keypress is reported, if PSC6_3 is low. If PSC6_3
 * is left open, no keypress is detected.
 */
int post_hotkeys_pressed(void)
{
        struct mpc5xxx_gpio *gpio;

        gpio = (struct mpc5xxx_gpio*) MPC5XXX_GPIO;

        /*
         * Configure PSC6_1 and PSC6_3 as GPIO. PSC6 then couldn't be used in
         * CODEC or UART mode. Consumer IrDA should still be possible.
         */
        gpio->port_config &= ~(0x07000000);
        gpio->port_config |=   0x03000000;

        /* Enable GPIO for GPIO_IRDA_1 (IR_USB_CLK pin) = PSC6_3 */
        gpio->simple_gpioe |= 0x20000000;

        /* Configure GPIO_IRDA_1 as input */
        gpio->simple_ddr &= ~(0x20000000);

        return ((gpio->simple_ival & 0x20000000) ? 0 : 1);
}
#endif

#ifdef CONFIG_BOARD_EARLY_INIT_R
int board_early_init_r (void)
{
#ifdef CONFIG_RTC_MPC5200
        struct rtc_time t;

        /* set to Wed Dec 31 19:00:00 1969 */
        t.tm_sec = t.tm_min = 0;
        t.tm_hour = 19;
        t.tm_mday = 31;
        t.tm_mon = 12;
        t.tm_year = 1969;
        t.tm_wday = 3;

        rtc_set(&t);
#endif /* CONFIG_RTC_MPC5200 */

#ifdef CONFIG_PS2MULT
        ps2mult_early_init();
#endif /* CONFIG_PS2MULT */
        return (0);
}
#endif /* CONFIG_BOARD_EARLY_INIT_R */


int last_stage_init (void)
{
        /*
         * auto scan for really existing devices and re-set chip select
         * configuration.
         */
        u16 save, tmp;
        int restore;

        /*
         * Check for SRAM and SRAM size
         */

        /* save original SRAM content  */
        save = *(volatile u16 *)CONFIG_SYS_CS2_START;
        restore = 1;

        /* write test pattern to SRAM */
        *(volatile u16 *)CONFIG_SYS_CS2_START = 0xA5A5;
        __asm__ volatile ("sync");
        /*
         * Put a different pattern on the data lines: otherwise they may float
         * long enough to read back what we wrote.
         */
        tmp = *(volatile u16 *)CONFIG_SYS_FLASH_BASE;
        if (tmp == 0xA5A5)
                puts ("!! possible error in SRAM detection\n");

        if (*(volatile u16 *)CONFIG_SYS_CS2_START != 0xA5A5) {
                /* no SRAM at all, disable cs */
                *(vu_long *)MPC5XXX_ADDECR &= ~(1 << 18);
                *(vu_long *)MPC5XXX_CS2_START = 0x0000FFFF;
                *(vu_long *)MPC5XXX_CS2_STOP = 0x0000FFFF;
                restore = 0;
                __asm__ volatile ("sync");
        } else if (*(volatile u16 *)(CONFIG_SYS_CS2_START + (1<<19)) == 0xA5A5) {
                /* make sure that we access a mirrored address */
                *(volatile u16 *)CONFIG_SYS_CS2_START = 0x1111;
                __asm__ volatile ("sync");
                if (*(volatile u16 *)(CONFIG_SYS_CS2_START + (1<<19)) == 0x1111) {
                        /* SRAM size = 512 kByte */
                        *(vu_long *)MPC5XXX_CS2_STOP = STOP_REG(CONFIG_SYS_CS2_START,
                                                                0x80000);
                        __asm__ volatile ("sync");
                        puts ("SRAM:  512 kB\n");
                }
                else
                        puts ("!! possible error in SRAM detection\n");
        } else {
                puts ("SRAM:  1 MB\n");
        }
        /* restore origianl SRAM content  */
        if (restore) {
                *(volatile u16 *)CONFIG_SYS_CS2_START = save;
                __asm__ volatile ("sync");
        }

        /*
         * Check for Grafic Controller
         */

        /* save origianl FB content  */
        save = *(volatile u16 *)CONFIG_SYS_CS1_START;
        restore = 1;

        /* write test pattern to FB memory */
        *(volatile u16 *)CONFIG_SYS_CS1_START = 0xA5A5;
        __asm__ volatile ("sync");
        /*
         * Put a different pattern on the data lines: otherwise they may float
         * long enough to read back what we wrote.
         */
        tmp = *(volatile u16 *)CONFIG_SYS_FLASH_BASE;
        if (tmp == 0xA5A5)
                puts ("!! possible error in grafic controller detection\n");

        if (*(volatile u16 *)CONFIG_SYS_CS1_START != 0xA5A5) {
                /* no grafic controller at all, disable cs */
                *(vu_long *)MPC5XXX_ADDECR &= ~(1 << 17);
                *(vu_long *)MPC5XXX_CS1_START = 0x0000FFFF;
                *(vu_long *)MPC5XXX_CS1_STOP = 0x0000FFFF;
                restore = 0;
                __asm__ volatile ("sync");
        } else {
                puts ("VGA:   SMI501 (Voyager) with 8 MB\n");
        }
        /* restore origianl FB content  */
        if (restore) {
                *(volatile u16 *)CONFIG_SYS_CS1_START = save;
                __asm__ volatile ("sync");
        }

        return 0;
}

#ifdef CONFIG_VIDEO_SM501

#define DISPLAY_WIDTH   640
#define DISPLAY_HEIGHT  480

#ifdef CONFIG_VIDEO_SM501_8BPP
#error CONFIG_VIDEO_SM501_8BPP not supported.
#endif /* CONFIG_VIDEO_SM501_8BPP */

#ifdef CONFIG_VIDEO_SM501_16BPP
#error CONFIG_VIDEO_SM501_16BPP not supported.
#endif /* CONFIG_VIDEO_SM501_16BPP */

#ifdef CONFIG_VIDEO_SM501_32BPP
static const SMI_REGS init_regs [] =
{
#if defined (CONFIG_BC3450_FP) && !defined (CONFIG_BC3450_CRT)
        /* FP only */
        {0x00004, 0x0},
        {0x00048, 0x00021807},
        {0x0004C, 0x091a0a01},
        {0x00054, 0x1},
        {0x00040, 0x00021807},
        {0x00044, 0x091a0a01},
        {0x00054, 0x0},
        {0x80000, 0x01013106},
        {0x80004, 0xc428bb17},
        {0x80000, 0x03013106},
        {0x8000C, 0x00000000},
        {0x80010, 0x0a000a00},
        {0x80014, 0x02800000},
        {0x80018, 0x01e00000},
        {0x8001C, 0x00000000},
        {0x80020, 0x01e00280},
        {0x80024, 0x02fa027f},
        {0x80028, 0x004a028b},
        {0x8002C, 0x020c01df},
        {0x80030, 0x000201e9},
        {0x80200, 0x00010200},
        {0x80000, 0x0f013106},
#elif defined (CONFIG_BC3450_CRT) && !defined (CONFIG_BC3450_FP)
        /* CRT only */
        {0x00004, 0x0},
        {0x00048, 0x00021807},
        {0x0004C, 0x10090a01},
        {0x00054, 0x1},
        {0x00040, 0x00021807},
        {0x00044, 0x10090a01},
        {0x00054, 0x0},
        {0x80200, 0x00010000},
        {0x80204, 0x0},
        {0x80208, 0x0A000A00},
        {0x8020C, 0x02fa027f},
        {0x80210, 0x004a028b},
        {0x80214, 0x020c01df},
        {0x80218, 0x000201e9},
        {0x80200, 0x00013306},
#else   /* panel + CRT */
        {0x00004, 0x0},
        {0x00048, 0x00021807},
        {0x0004C, 0x091a0a01},
        {0x00054, 0x1},
        {0x00040, 0x00021807},
        {0x00044, 0x091a0a01},
        {0x00054, 0x0},
        {0x80000, 0x0f013106},
        {0x80004, 0xc428bb17},
        {0x8000C, 0x00000000},
        {0x80010, 0x0a000a00},
        {0x80014, 0x02800000},
        {0x80018, 0x01e00000},
        {0x8001C, 0x00000000},
        {0x80020, 0x01e00280},
        {0x80024, 0x02fa027f},
        {0x80028, 0x004a028b},
        {0x8002C, 0x020c01df},
        {0x80030, 0x000201e9},
        {0x80200, 0x00010000},
#endif
        {0, 0}
};
#endif /* CONFIG_VIDEO_SM501_32BPP */

#ifdef 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) {
#if defined (CONFIG_TQM5200)
            strcpy (info, " Board: TQM5200 (TQ-Components GmbH)");
#else
#error No supported board selected
#endif /* CONFIG_TQM5200 */

#if defined (CONFIG_BC3450)
        } else if (line_number == 2) {
            strcpy (info, " Dev:   GERSYS BC3450");
#endif /* CONFIG_BC3450 */
        }
        else {
                info [0] = '\0';
        }
}
#endif

/*
 * Returns SM501 register base address. First thing called in the
 * driver. Checks if SM501 is physically present.
 */
unsigned int board_video_init (void)
{
        u16 save, tmp;
        int restore, ret;

        /*
         * Check for Grafic Controller
         */

        /* save origianl FB content  */
        save = *(volatile u16 *)CONFIG_SYS_CS1_START;
        restore = 1;

        /* write test pattern to FB memory */
        *(volatile u16 *)CONFIG_SYS_CS1_START = 0xA5A5;
        __asm__ volatile ("sync");
        /*
         * Put a different pattern on the data lines: otherwise they may float
         * long enough to read back what we wrote.
         */
        tmp = *(volatile u16 *)CONFIG_SYS_FLASH_BASE;
        if (tmp == 0xA5A5)
                puts ("!! possible error in grafic controller detection\n");

        if (*(volatile u16 *)CONFIG_SYS_CS1_START != 0xA5A5) {
                /* no grafic controller found */
                restore = 0;
                ret = 0;
        } else {
            ret = SM501_MMIO_BASE;
        }

        if (restore) {
                *(volatile u16 *)CONFIG_SYS_CS1_START = save;
                __asm__ volatile ("sync");
        }
        return ret;
}

/*
 * Returns SM501 framebuffer address
 */
unsigned int board_video_get_fb (void)
{
        return SM501_FB_BASE;
}

/*
 * Called after initializing the SM501 and before clearing the screen.
 */
void board_validate_screen (unsigned int base)
{
}

/*
 * Return a pointer to the initialization sequence.
 */
const SMI_REGS *board_get_regs (void)
{
        return init_regs;
}

int board_get_width (void)
{
        return DISPLAY_WIDTH;
}

int board_get_height (void)
{
        return DISPLAY_HEIGHT;
}

#endif /* CONFIG_VIDEO_SM501 */

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