/*
 * Copyright 2008 DENX Software Engineering GmbH
 * Author: Heiko Schocher <hs@denx.de>
 *
 * Description:
 * Keymile KMETER1 board specific routines.
 *
 * 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.
 */

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>

#include <asm/system.h>
#include <asm/atomic.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include <asm/qe.h>
#include <asm/qe_ic.h>

#include "mpc83xx.h"

#define SVR_REV(svr)    (((svr) >>  0) & 0xFFFF) /* Revision field */
/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init kmeter1_setup_arch(void)
{
        struct device_node *np;

        if (ppc_md.progress)
                ppc_md.progress("kmeter1_setup_arch()", 0);

#ifdef CONFIG_PCI
        for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
                mpc83xx_add_bridge(np);
#endif

#ifdef CONFIG_QUICC_ENGINE
        qe_reset();

        np = of_find_node_by_name(NULL, "par_io");
        if (np != NULL) {
                par_io_init(np);
                of_node_put(np);

                for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
                        par_io_of_config(np);
        }

        np = of_find_compatible_node(NULL, "network", "ucc_geth");
        if (np != NULL) {
                uint svid;

                /* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */
                svid = mfspr(SPRN_SVR);
                if (SVR_REV(svid) == 0x0021) {
                        struct  device_node *np_par;
                        struct  resource res;
                        void    __iomem *base;
                        int     ret;

                        np_par = of_find_node_by_name(NULL, "par_io");
                        if (np_par == NULL) {
                                printk(KERN_WARNING "%s couldn;t find par_io node\n",
                                        __func__);
                                return;
                        }
                        /* Map Parallel I/O ports registers */
                        ret = of_address_to_resource(np_par, 0, &res);
                        if (ret) {
                                printk(KERN_WARNING "%s couldn;t map par_io registers\n",
                                        __func__);
                                return;
                        }
                        base = ioremap(res.start, res.end - res.start + 1);

                        /*
                         * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2)
                         * IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1)
                         */
                        setbits32((base + 0xa8), 0x0c003000);

                        /*
                         * IMMR + 0x14AC[20:27] = 10101010
                         * (data delay for both UCC's)
                         */
                        clrsetbits_be32((base + 0xac), 0xff0, 0xaa0);
                        iounmap(base);
                        of_node_put(np_par);
                }
                of_node_put(np);
        }
#endif                          /* CONFIG_QUICC_ENGINE */
}

static struct of_device_id kmeter_ids[] = {
        { .type = "soc", },
        { .compatible = "soc", },
        { .compatible = "simple-bus", },
        { .type = "qe", },
        { .compatible = "fsl,qe", },
        {},
};

static int __init kmeter_declare_of_platform_devices(void)
{
        /* Publish the QE devices */
        of_platform_bus_probe(NULL, kmeter_ids, NULL);

        return 0;
}
machine_device_initcall(kmeter1, kmeter_declare_of_platform_devices);

static void __init kmeter1_init_IRQ(void)
{
        struct device_node *np;

        np = of_find_compatible_node(NULL, NULL, "fsl,pq2pro-pic");
        if (!np) {
                np = of_find_node_by_type(NULL, "ipic");
                if (!np)
                        return;
        }

        ipic_init(np, 0);

        /* Initialize the default interrupt mapping priorities,
         * in case the boot rom changed something on us.
         */
        ipic_set_default_priority();
        of_node_put(np);

#ifdef CONFIG_QUICC_ENGINE
        np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
        if (!np) {
                np = of_find_node_by_type(NULL, "qeic");
                if (!np)
                        return;
        }
        qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
        of_node_put(np);
#endif                          /* CONFIG_QUICC_ENGINE */
}

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init kmeter1_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        return of_flat_dt_is_compatible(root, "keymile,KMETER1");
}

define_machine(kmeter1) {
        .name           = "KMETER1",
        .probe          = kmeter1_probe,
        .setup_arch     = kmeter1_setup_arch,
        .init_IRQ       = kmeter1_init_IRQ,
        .get_irq        = ipic_get_irq,
        .restart        = mpc83xx_restart,
        .time_init      = mpc83xx_time_init,
        .calibrate_decr = generic_calibrate_decr,
        .progress       = udbg_progress,
};