release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/platforms/85xx/mpc85xx_rdb.c

   1 /*
   2  * MPC85xx RDB Board Setup
   3  *
   4  * Copyright 2009 Freescale Semiconductor Inc.
   5  *
   6  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #include <linux/stddef.h>
  13 #include <linux/kernel.h>
  14 #include <linux/pci.h>
  15 #include <linux/kdev_t.h>
  16 #include <linux/delay.h>
  17 #include <linux/seq_file.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/of_platform.h>
  20
  21 #include <asm/system.h>
  22 #include <asm/time.h>
  23 #include <asm/machdep.h>
  24 #include <asm/pci-bridge.h>
  25 #include <mm/mmu_decl.h>
  26 #include <asm/prom.h>
  27 #include <asm/udbg.h>
  28 #include <asm/mpic.h>
  29
  30 #include <sysdev/fsl_soc.h>
  31 #include <sysdev/fsl_pci.h>
  32
  33 #undef DEBUG
  34
  35 #ifdef DEBUG
  36 #define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
  37 #else
  38 #define DBG(fmt, args...)
  39 #endif
  40
  41
  42 void __init mpc85xx_rdb_pic_init(void)
  43 {
  44         struct mpic *mpic;
  45         struct resource r;
  46         struct device_node *np;
  47         unsigned long root = of_get_flat_dt_root();
  48
  49         np = of_find_node_by_type(NULL, "open-pic");
  50         if (np == NULL) {
  51                 printk(KERN_ERR "Could not find open-pic node\n");
  52                 return;
  53         }
  54
  55         if (of_address_to_resource(np, 0, &r)) {
  56                 printk(KERN_ERR "Failed to map mpic register space\n");
  57                 of_node_put(np);
  58                 return;
  59         }
  60
  61         if (of_flat_dt_is_compatible(root, "fsl,85XXRDB-CAMP")) {
  62                 mpic = mpic_alloc(np, r.start,
  63                         MPIC_PRIMARY |
  64                         MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS,
  65                         0, 256, " OpenPIC  ");
  66         } else {
  67                 mpic = mpic_alloc(np, r.start,
  68                   MPIC_PRIMARY | MPIC_WANTS_RESET |
  69                   MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
  70                   MPIC_SINGLE_DEST_CPU,
  71                   0, 256, " OpenPIC  ");
  72         }
  73
  74         BUG_ON(mpic == NULL);
  75         of_node_put(np);
  76
  77         mpic_init(mpic);
  78
  79 }
  80
  81 /*
  82  * Setup the architecture
  83  */
  84 #ifdef CONFIG_SMP
  85 extern void __init mpc85xx_smp_init(void);
  86 #endif
  87 static void __init mpc85xx_rdb_setup_arch(void)
  88 {
  89 #ifdef CONFIG_PCI
  90         struct device_node *np;
  91 #endif
  92
  93         if (ppc_md.progress)
  94                 ppc_md.progress("mpc85xx_rdb_setup_arch()", 0);
  95
  96 #ifdef CONFIG_PCI
  97         for_each_node_by_type(np, "pci") {
  98                 if (of_device_is_compatible(np, "fsl,mpc8548-pcie"))
  99                         fsl_add_bridge(np, 0);
 100         }
 101
 102 #endif
 103
 104 #ifdef CONFIG_SMP
 105         mpc85xx_smp_init();
 106 #endif
 107
 108         printk(KERN_INFO "MPC85xx RDB board from Freescale Semiconductor\n");
 109 }
 110
 111 static struct of_device_id __initdata mpc85xxrdb_ids[] = {
 112         { .type = "soc", },
 113         { .compatible = "soc", },
 114         { .compatible = "simple-bus", },
 115         { .compatible = "gianfar", },
 116         {},
 117 };
 118
 119 static int __init mpc85xxrdb_publish_devices(void)
 120 {
 121         return of_platform_bus_probe(NULL, mpc85xxrdb_ids, NULL);
 122 }
 123 machine_device_initcall(p2020_rdb, mpc85xxrdb_publish_devices);
 124 machine_device_initcall(p1020_rdb, mpc85xxrdb_publish_devices);
 125
 126 /*
 127  * Called very early, device-tree isn't unflattened
 128  */
 129 static int __init p2020_rdb_probe(void)
 130 {
 131         unsigned long root = of_get_flat_dt_root();
 132
 133         if (of_flat_dt_is_compatible(root, "fsl,P2020RDB"))
 134                 return 1;
 135         return 0;
 136 }
 137
 138 static int __init p1020_rdb_probe(void)
 139 {
 140         unsigned long root = of_get_flat_dt_root();
 141
 142         if (of_flat_dt_is_compatible(root, "fsl,P1020RDB"))
 143                 return 1;
 144         return 0;
 145 }
 146
 147 define_machine(p2020_rdb) {
 148         .name                   = "P2020 RDB",
 149         .probe                  = p2020_rdb_probe,
 150         .setup_arch             = mpc85xx_rdb_setup_arch,
 151         .init_IRQ               = mpc85xx_rdb_pic_init,
 152 #ifdef CONFIG_PCI
 153         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
 154 #endif
 155         .get_irq                = mpic_get_irq,
 156         .restart                = fsl_rstcr_restart,
 157         .calibrate_decr         = generic_calibrate_decr,
 158         .progress               = udbg_progress,
 159 };
 160
 161 define_machine(p1020_rdb) {
 162         .name                   = "P1020 RDB",
 163         .probe                  = p1020_rdb_probe,
 164         .setup_arch             = mpc85xx_rdb_setup_arch,
 165         .init_IRQ               = mpc85xx_rdb_pic_init,
 166 #ifdef CONFIG_PCI
 167         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
 168 #endif
 169         .get_irq                = mpic_get_irq,
 170         .restart                = fsl_rstcr_restart,
 171         .calibrate_decr         = generic_calibrate_decr,
 172         .progress               = udbg_progress,
 173 };