LXR linux/arch/powerpc/platforms/85xx/tqm85xx.c

   1/*
   2 * Based on MPC8560 ADS and arch/ppc tqm85xx ports
   3 *
   4 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   5 *
   6 * Copyright 2008 Freescale Semiconductor Inc.
   7 *
   8 * Copyright (c) 2005-2006 DENX Software Engineering
   9 * Stefan Roese <sr@denx.de>
  10 *
  11 * Based on original work by
  12 *      Kumar Gala <kumar.gala@freescale.com>
  13 *      Copyright 2004 Freescale Semiconductor Inc.
  14 *
  15 * This program is free software; you can redistribute  it and/or modify it
  16 * under  the terms of  the GNU General  Public License as published by the
  17 * Free Software Foundation;  either version 2 of the  License, or (at your
  18 * option) any later version.
  19 */
  20
  21#include <linux/stddef.h>
  22#include <linux/kernel.h>
  23#include <linux/pci.h>
  24#include <linux/kdev_t.h>
  25#include <linux/delay.h>
  26#include <linux/seq_file.h>
  27#include <linux/of_platform.h>
  28
  29#include <asm/time.h>
  30#include <asm/machdep.h>
  31#include <asm/pci-bridge.h>
  32#include <asm/mpic.h>
  33#include <asm/prom.h>
  34#include <mm/mmu_decl.h>
  35#include <asm/udbg.h>
  36
  37#include <sysdev/fsl_soc.h>
  38#include <sysdev/fsl_pci.h>
  39
  40#include "mpc85xx.h"
  41
  42#ifdef CONFIG_CPM2
  43#include <asm/cpm2.h>
  44#endif /* CONFIG_CPM2 */
  45
  46static void __init tqm85xx_pic_init(void)
  47{
  48        struct mpic *mpic = mpic_alloc(NULL, 0,
  49                        MPIC_BIG_ENDIAN,
  50                        0, 256, " OpenPIC  ");
  51        BUG_ON(mpic == NULL);
  52        mpic_init(mpic);
  53
  54        mpc85xx_cpm2_pic_init();
  55}
  56
  57/*
  58 * Setup the architecture
  59 */
  60static void __init tqm85xx_setup_arch(void)
  61{
  62        if (ppc_md.progress)
  63                ppc_md.progress("tqm85xx_setup_arch()", 0);
  64
  65#ifdef CONFIG_CPM2
  66        cpm2_reset();
  67#endif
  68
  69        fsl_pci_assign_primary();
  70}
  71
  72static void tqm85xx_show_cpuinfo(struct seq_file *m)
  73{
  74        uint pvid, svid, phid1;
  75
  76        pvid = mfspr(SPRN_PVR);
  77        svid = mfspr(SPRN_SVR);
  78
  79        seq_printf(m, "Vendor\t\t: TQ Components\n");
  80        seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
  81        seq_printf(m, "SVR\t\t: 0x%x\n", svid);
  82
  83        /* Display cpu Pll setting */
  84        phid1 = mfspr(SPRN_HID1);
  85        seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
  86}
  87
  88static void tqm85xx_ti1520_fixup(struct pci_dev *pdev)
  89{
  90        unsigned int val;
  91
  92        /* Do not do the fixup on other platforms! */
  93        if (!machine_is(tqm85xx))
  94                return;
  95
  96        dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n");
  97
  98        /*
  99         * Enable P2CCLK bit in system control register
 100         * to enable CLOCK output to power chip
 101         */
 102        pci_read_config_dword(pdev, 0x80, &val);
 103        pci_write_config_dword(pdev, 0x80, val | (1 << 27));
 104
 105}
 106DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520,
 107                tqm85xx_ti1520_fixup);
 108
 109machine_arch_initcall(tqm85xx, mpc85xx_common_publish_devices);
 110
 111static const char * const board[] __initconst = {
 112        "tqc,tqm8540",
 113        "tqc,tqm8541",
 114        "tqc,tqm8548",
 115        "tqc,tqm8555",
 116        "tqc,tqm8560",
 117        NULL
 118};
 119
 120/*
 121 * Called very early, device-tree isn't unflattened
 122 */
 123static int __init tqm85xx_probe(void)
 124{
 125        return of_flat_dt_match(of_get_flat_dt_root(), board);
 126}
 127
 128define_machine(tqm85xx) {
 129        .name                   = "TQM85xx",
 130        .probe                  = tqm85xx_probe,
 131        .setup_arch             = tqm85xx_setup_arch,
 132        .init_IRQ               = tqm85xx_pic_init,
 133        .show_cpuinfo           = tqm85xx_show_cpuinfo,
 134        .get_irq                = mpic_get_irq,
 135        .restart                = fsl_rstcr_restart,
 136        .calibrate_decr         = generic_calibrate_decr,
 137        .progress               = udbg_progress,
 138};
 139