linux/arch/powerpc/platforms/85xx/stx_gp3.c
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   1/*
   2 * Based on MPC8560 ADS and arch/ppc stx_gp3 ports
   3 *
   4 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   5 *
   6 * Copyright 2008 Freescale Semiconductor Inc.
   7 *
   8 * Dan Malek <dan@embeddededge.com>
   9 * Copyright 2004 Embedded Edge, LLC
  10 *
  11 * Copied from mpc8560_ads.c
  12 * Copyright 2002, 2003 Motorola Inc.
  13 *
  14 * Ported to 2.6, Matt Porter <mporter@kernel.crashing.org>
  15 * Copyright 2004-2005 MontaVista Software, Inc.
  16 *
  17 * This program is free software; you can redistribute  it and/or modify it
  18 * under  the terms of  the GNU General  Public License as published by the
  19 * Free Software Foundation;  either version 2 of the  License, or (at your
  20 * option) any later version.
  21 */
  22
  23#include <linux/stddef.h>
  24#include <linux/kernel.h>
  25#include <linux/pci.h>
  26#include <linux/kdev_t.h>
  27#include <linux/delay.h>
  28#include <linux/seq_file.h>
  29#include <linux/of_platform.h>
  30
  31#include <asm/system.h>
  32#include <asm/time.h>
  33#include <asm/machdep.h>
  34#include <asm/pci-bridge.h>
  35#include <asm/mpic.h>
  36#include <asm/prom.h>
  37#include <mm/mmu_decl.h>
  38#include <asm/udbg.h>
  39
  40#include <sysdev/fsl_soc.h>
  41#include <sysdev/fsl_pci.h>
  42
  43#include "mpc85xx.h"
  44
  45#ifdef CONFIG_CPM2
  46#include <asm/cpm2.h>
  47#endif /* CONFIG_CPM2 */
  48
  49static void __init stx_gp3_pic_init(void)
  50{
  51        struct mpic *mpic = mpic_alloc(NULL, 0,
  52                        MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
  53                        0, 256, " OpenPIC  ");
  54        BUG_ON(mpic == NULL);
  55        mpic_init(mpic);
  56
  57        mpc85xx_cpm2_pic_init();
  58}
  59
  60/*
  61 * Setup the architecture
  62 */
  63static void __init stx_gp3_setup_arch(void)
  64{
  65#ifdef CONFIG_PCI
  66        struct device_node *np;
  67#endif
  68
  69        if (ppc_md.progress)
  70                ppc_md.progress("stx_gp3_setup_arch()", 0);
  71
  72#ifdef CONFIG_CPM2
  73        cpm2_reset();
  74#endif
  75
  76#ifdef CONFIG_PCI
  77        for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
  78                fsl_add_bridge(np, 1);
  79#endif
  80}
  81
  82static void stx_gp3_show_cpuinfo(struct seq_file *m)
  83{
  84        uint pvid, svid, phid1;
  85
  86        pvid = mfspr(SPRN_PVR);
  87        svid = mfspr(SPRN_SVR);
  88
  89        seq_printf(m, "Vendor\t\t: RPC Electronics STx\n");
  90        seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
  91        seq_printf(m, "SVR\t\t: 0x%x\n", svid);
  92
  93        /* Display cpu Pll setting */
  94        phid1 = mfspr(SPRN_HID1);
  95        seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
  96}
  97
  98machine_device_initcall(stx_gp3, mpc85xx_common_publish_devices);
  99
 100/*
 101 * Called very early, device-tree isn't unflattened
 102 */
 103static int __init stx_gp3_probe(void)
 104{
 105        unsigned long root = of_get_flat_dt_root();
 106
 107        return of_flat_dt_is_compatible(root, "stx,gp3-8560");
 108}
 109
 110define_machine(stx_gp3) {
 111        .name                   = "STX GP3",
 112        .probe                  = stx_gp3_probe,
 113        .setup_arch             = stx_gp3_setup_arch,
 114        .init_IRQ               = stx_gp3_pic_init,
 115        .show_cpuinfo           = stx_gp3_show_cpuinfo,
 116        .get_irq                = mpic_get_irq,
 117        .restart                = fsl_rstcr_restart,
 118        .calibrate_decr         = generic_calibrate_decr,
 119        .progress               = udbg_progress,
 120};
 121