LXR linux/arch/powerpc/platforms/85xx/ppa8548.c

   1/*
   2 * ppa8548 setup and early boot code.
   3 *
   4 * Copyright 2009 Prodrive B.V..
   5 *
   6 * By Stef van Os (see MAINTAINERS for contact information)
   7 *
   8 * Based on the SBC8548 support - Copyright 2007 Wind River Systems Inc.
   9 * Based on the MPC8548CDS support - Copyright 2005 Freescale Inc.
  10 *
  11 * This program is free software; you can redistribute  it and/or modify it
  12 * under  the terms of  the GNU General  Public License as published by the
  13 * Free Software Foundation;  either version 2 of the  License, or (at your
  14 * option) any later version.
  15 */
  16
  17#include <linux/stddef.h>
  18#include <linux/kernel.h>
  19#include <linux/init.h>
  20#include <linux/reboot.h>
  21#include <linux/seq_file.h>
  22#include <linux/of_fdt.h>
  23#include <linux/of_platform.h>
  24
  25#include <asm/machdep.h>
  26#include <asm/udbg.h>
  27#include <asm/mpic.h>
  28
  29#include <sysdev/fsl_soc.h>
  30
  31static void __init ppa8548_pic_init(void)
  32{
  33        struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
  34                        0, 256, " OpenPIC  ");
  35        BUG_ON(mpic == NULL);
  36        mpic_init(mpic);
  37}
  38
  39/*
  40 * Setup the architecture
  41 */
  42static void __init ppa8548_setup_arch(void)
  43{
  44        if (ppc_md.progress)
  45                ppc_md.progress("ppa8548_setup_arch()", 0);
  46}
  47
  48static void ppa8548_show_cpuinfo(struct seq_file *m)
  49{
  50        uint32_t svid, phid1;
  51
  52        svid = mfspr(SPRN_SVR);
  53
  54        seq_printf(m, "Vendor\t\t: Prodrive B.V.\n");
  55        seq_printf(m, "SVR\t\t: 0x%x\n", svid);
  56
  57        /* Display cpu Pll setting */
  58        phid1 = mfspr(SPRN_HID1);
  59        seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
  60}
  61
  62static const struct of_device_id of_bus_ids[] __initconst = {
  63        { .name = "soc", },
  64        { .type = "soc", },
  65        { .compatible = "simple-bus", },
  66        { .compatible = "gianfar", },
  67        { .compatible = "fsl,srio", },
  68        {},
  69};
  70
  71static int __init declare_of_platform_devices(void)
  72{
  73        of_platform_bus_probe(NULL, of_bus_ids, NULL);
  74
  75        return 0;
  76}
  77machine_device_initcall(ppa8548, declare_of_platform_devices);
  78
  79/*
  80 * Called very early, device-tree isn't unflattened
  81 */
  82static int __init ppa8548_probe(void)
  83{
  84        return of_machine_is_compatible("ppa8548");
  85}
  86
  87define_machine(ppa8548) {
  88        .name           = "ppa8548",
  89        .probe          = ppa8548_probe,
  90        .setup_arch     = ppa8548_setup_arch,
  91        .init_IRQ       = ppa8548_pic_init,
  92        .show_cpuinfo   = ppa8548_show_cpuinfo,
  93        .get_irq        = mpic_get_irq,
  94        .calibrate_decr = generic_calibrate_decr,
  95        .progress       = udbg_progress,
  96};
  97