celleb_setup.c

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/*
 * Celleb setup code
 *
 * (C) Copyright 2006-2007 TOSHIBA CORPORATION
 *
 * This code is based on arch/powerpc/platforms/cell/setup.c:
 *  Copyright (C) 1995  Linus Torvalds
 *  Adapted from 'alpha' version by Gary Thomas
 *  Modified by Cort Dougan ([email protected])
 *  Modified by PPC64 Team, IBM Corp
 *  Modified by Cell Team, IBM Deutschland Entwicklung GmbH
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#undef DEBUG

#include <linux/cpu.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/console.h>
#include <linux/of_platform.h>

#include <asm/mmu.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/cputable.h>
#include <asm/irq.h>
#include <asm/time.h>
#include <asm/spu_priv1.h>
#include <asm/firmware.h>
#include <asm/rtas.h>
#include <asm/cell-regs.h>

#include "beat_interrupt.h"
#include "beat_wrapper.h"
#include "beat.h"
#include "celleb_pci.h"
#include "interrupt.h"
#include "pervasive.h"
#include "ras.h"

static char celleb_machine_type[128] = "Celleb";

static void celleb_show_cpuinfo(struct seq_file *m)
{
    struct device_node *root;
    const char *model = "";

    root = of_find_node_by_path("/");
    if (root)
        model = of_get_property(root, "model", NULL);
    /* using "CHRP" is to trick anaconda into installing FCx into Celleb */
    seq_printf(m, "machine\t\t: %s %s\n", celleb_machine_type, model);
    of_node_put(root);
}

static int __init celleb_machine_type_hack(char *ptr)
{
    strlcpy(celleb_machine_type, ptr, sizeof(celleb_machine_type));
    return 0;
}

__setup("celleb_machine_type_hack=", celleb_machine_type_hack);

static void celleb_progress(char *s, unsigned short hex)
{
    printk("*** %04x : %s\n", hex, s ? s : "");
}

static void __init celleb_setup_arch_common(void)
{
    /* init to some ~sane value until calibrate_delay() runs */
    loops_per_jiffy = 50000000;

#ifdef CONFIG_DUMMY_CONSOLE
    conswitchp = &dummy_con;
#endif
}

static struct of_device_id celleb_bus_ids[] __initdata = {
    { .type = "scc", },
    { .type = "ioif", },    /* old style */
    {},
};

static int __init celleb_publish_devices(void)
{
    /* Publish OF platform devices for southbridge IOs */
    of_platform_bus_probe(NULL, celleb_bus_ids, NULL);

    return 0;
}
machine_device_initcall(celleb_beat, celleb_publish_devices);
machine_device_initcall(celleb_native, celleb_publish_devices);


/*
 * functions for Celleb-Beat
 */
static void __init celleb_setup_arch_beat(void)
{
#ifdef CONFIG_SPU_BASE
    spu_priv1_ops       = &spu_priv1_beat_ops;
    spu_management_ops  = &spu_management_of_ops;
#endif

    celleb_setup_arch_common();
}

static int __init celleb_probe_beat(void)
{
    unsigned long root = of_get_flat_dt_root();

    if (!of_flat_dt_is_compatible(root, "Beat"))
        return 0;

    powerpc_firmware_features |= FW_FEATURE_CELLEB_ALWAYS
        | FW_FEATURE_BEAT | FW_FEATURE_LPAR;
    hpte_init_beat_v3();

    return 1;
}


/*
 * functions for Celleb-native
 */
static void __init celleb_init_IRQ_native(void)
{
    iic_init_IRQ();
    spider_init_IRQ();
}

static void __init celleb_setup_arch_native(void)
{
#ifdef CONFIG_SPU_BASE
    spu_priv1_ops       = &spu_priv1_mmio_ops;
    spu_management_ops  = &spu_management_of_ops;
#endif

    cbe_regs_init();

#ifdef CONFIG_CBE_RAS
    cbe_ras_init();
#endif

#ifdef CONFIG_SMP
    smp_init_cell();
#endif

    cbe_pervasive_init();

    /* XXX: nvram initialization should be added */

    celleb_setup_arch_common();
}

static int __init celleb_probe_native(void)
{
    unsigned long root = of_get_flat_dt_root();

    if (of_flat_dt_is_compatible(root, "Beat") ||
        !of_flat_dt_is_compatible(root, "TOSHIBA,Celleb"))
        return 0;

    powerpc_firmware_features |= FW_FEATURE_CELLEB_ALWAYS;
    hpte_init_native();

    return 1;
}


/*
 * machine definitions
 */
define_machine(celleb_beat) {
    .name           = "Cell Reference Set (Beat)",
    .probe          = celleb_probe_beat,
    .setup_arch     = celleb_setup_arch_beat,
    .show_cpuinfo       = celleb_show_cpuinfo,
    .restart        = beat_restart,
    .power_off      = beat_power_off,
    .halt           = beat_halt,
    .get_rtc_time       = beat_get_rtc_time,
    .set_rtc_time       = beat_set_rtc_time,
    .calibrate_decr     = generic_calibrate_decr,
    .progress       = celleb_progress,
    .power_save     = beat_power_save,
    .nvram_size     = beat_nvram_get_size,
    .nvram_read     = beat_nvram_read,
    .nvram_write        = beat_nvram_write,
    .set_dabr       = beat_set_xdabr,
    .init_IRQ       = beatic_init_IRQ,
    .get_irq        = beatic_get_irq,
    .pci_probe_mode     = celleb_pci_probe_mode,
    .pci_setup_phb      = celleb_setup_phb,
#ifdef CONFIG_KEXEC
    .kexec_cpu_down     = beat_kexec_cpu_down,
#endif
};

define_machine(celleb_native) {
    .name           = "Cell Reference Set (native)",
    .probe          = celleb_probe_native,
    .setup_arch     = celleb_setup_arch_native,
    .show_cpuinfo       = celleb_show_cpuinfo,
    .restart        = rtas_restart,
    .power_off      = rtas_power_off,
    .halt           = rtas_halt,
    .get_boot_time      = rtas_get_boot_time,
    .get_rtc_time       = rtas_get_rtc_time,
    .set_rtc_time       = rtas_set_rtc_time,
    .calibrate_decr     = generic_calibrate_decr,
    .progress       = celleb_progress,
    .pci_probe_mode     = celleb_pci_probe_mode,
    .pci_setup_phb      = celleb_setup_phb,
    .init_IRQ       = celleb_init_IRQ_native,
};