tqm85xx.c

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/*
 * Based on MPC8560 ADS and arch/ppc tqm85xx ports
 *
 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
 *
 * Copyright 2008 Freescale Semiconductor Inc.
 *
 * Copyright (c) 2005-2006 DENX Software Engineering
 * Stefan Roese <[email protected]>
 *
 * Based on original work by
 *  Kumar Gala <[email protected]>
 *      Copyright 2004 Freescale Semiconductor Inc.
 *
 * 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/pci.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/of_platform.h>

#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/mpic.h>
#include <asm/prom.h>
#include <mm/mmu_decl.h>
#include <asm/udbg.h>

#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

#include "mpc85xx.h"

#ifdef CONFIG_CPM2
#include <asm/cpm2.h>
#endif /* CONFIG_CPM2 */

static void __init tqm85xx_pic_init(void)
{
    struct mpic *mpic = mpic_alloc(NULL, 0,
            MPIC_BIG_ENDIAN,
            0, 256, " OpenPIC  ");
    BUG_ON(mpic == NULL);
    mpic_init(mpic);

    mpc85xx_cpm2_pic_init();
}

/*
 * Setup the architecture
 */
static void __init tqm85xx_setup_arch(void)
{
    if (ppc_md.progress)
        ppc_md.progress("tqm85xx_setup_arch()", 0);

#ifdef CONFIG_CPM2
    cpm2_reset();
#endif

    fsl_pci_assign_primary();
}

static void tqm85xx_show_cpuinfo(struct seq_file *m)
{
    uint pvid, svid, phid1;

    pvid = mfspr(SPRN_PVR);
    svid = mfspr(SPRN_SVR);

    seq_printf(m, "Vendor\t\t: TQ Components\n");
    seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
    seq_printf(m, "SVR\t\t: 0x%x\n", svid);

    /* Display cpu Pll setting */
    phid1 = mfspr(SPRN_HID1);
    seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
}

static void __devinit tqm85xx_ti1520_fixup(struct pci_dev *pdev)
{
    unsigned int val;

    /* Do not do the fixup on other platforms! */
    if (!machine_is(tqm85xx))
        return;

    dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n");

    /*
     * Enable P2CCLK bit in system control register
     * to enable CLOCK output to power chip
     */
    pci_read_config_dword(pdev, 0x80, &val);
    pci_write_config_dword(pdev, 0x80, val | (1 << 27));

}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520,
        tqm85xx_ti1520_fixup);

machine_arch_initcall(tqm85xx, mpc85xx_common_publish_devices);

static const char * const board[] __initconst = {
    "tqc,tqm8540",
    "tqc,tqm8541",
    "tqc,tqm8548",
    "tqc,tqm8555",
    "tqc,tqm8560",
    NULL
};

/*
 * Called very early, device-tree isn't unflattened
 */
static int __init tqm85xx_probe(void)
{
    return of_flat_dt_match(of_get_flat_dt_root(), board);
}

define_machine(tqm85xx) {
    .name           = "TQM85xx",
    .probe          = tqm85xx_probe,
    .setup_arch     = tqm85xx_setup_arch,
    .init_IRQ       = tqm85xx_pic_init,
    .show_cpuinfo       = tqm85xx_show_cpuinfo,
    .get_irq        = mpic_get_irq,
    .restart        = fsl_rstcr_restart,
    .calibrate_decr     = generic_calibrate_decr,
    .progress       = udbg_progress,
};