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,MPC85XXRDB-CAMP")) {
  62                 mpic = mpic_alloc(np, r.start,
  63                         MPIC_PRIMARY |
  64                         MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
  65                         MPIC_SINGLE_DEST_CPU,
  66                         0, 256, " OpenPIC  ");
  67         } else {
  68                 mpic = mpic_alloc(np, r.start,
  69                   MPIC_PRIMARY | MPIC_WANTS_RESET |
  70                   MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
  71                   MPIC_SINGLE_DEST_CPU,
  72                   0, 256, " OpenPIC  ");
  73         }
  74
  75         BUG_ON(mpic == NULL);
  76         of_node_put(np);
  77
  78         mpic_init(mpic);
  79
  80 }
  81
  82 /*
  83  * Setup the architecture
  84  */
  85 #ifdef CONFIG_SMP
  86 extern void __init mpc85xx_smp_init(void);
  87 #endif
  88 static void __init mpc85xx_rdb_setup_arch(void)
  89 {
  90 #ifdef CONFIG_PCI
  91         struct device_node *np;
  92 #endif
  93
  94         if (ppc_md.progress)
  95                 ppc_md.progress("mpc85xx_rdb_setup_arch()", 0);
  96
  97 #ifdef CONFIG_PCI
  98         for_each_node_by_type(np, "pci") {
  99                 if (of_device_is_compatible(np, "fsl,mpc8548-pcie"))
 100                         fsl_add_bridge(np, 0);
 101         }
 102
 103 #endif
 104
 105 #ifdef CONFIG_SMP
 106         mpc85xx_smp_init();
 107 #endif
 108
 109         printk(KERN_INFO "MPC85xx RDB board from Freescale Semiconductor\n");
 110 }
 111
 112 static struct of_device_id __initdata mpc85xxrdb_ids[] = {
 113         { .type = "soc", },
 114         { .compatible = "soc", },
 115         { .compatible = "simple-bus", },
 116         { .compatible = "gianfar", },
 117         {},
 118 };
 119
 120 static int __init mpc85xxrdb_publish_devices(void)
 121 {
 122         return of_platform_bus_probe(NULL, mpc85xxrdb_ids, NULL);
 123 }
 124 machine_device_initcall(p2020_rdb, mpc85xxrdb_publish_devices);
 125 machine_device_initcall(p1020_rdb, mpc85xxrdb_publish_devices);
 126
 127 /*
 128  * Called very early, device-tree isn't unflattened
 129  */
 130 static int __init p2020_rdb_probe(void)
 131 {
 132         unsigned long root = of_get_flat_dt_root();
 133
 134         if (of_flat_dt_is_compatible(root, "fsl,P2020RDB"))
 135                 return 1;
 136         return 0;
 137 }
 138
 139 static int __init p1020_rdb_probe(void)
 140 {
 141         unsigned long root = of_get_flat_dt_root();
 142
 143         if (of_flat_dt_is_compatible(root, "fsl,P1020RDB"))
 144                 return 1;
 145         return 0;
 146 }
 147
 148 define_machine(p2020_rdb) {
 149         .name                   = "P2020 RDB",
 150         .probe                  = p2020_rdb_probe,
 151         .setup_arch             = mpc85xx_rdb_setup_arch,
 152         .init_IRQ               = mpc85xx_rdb_pic_init,
 153 #ifdef CONFIG_PCI
 154         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
 155 #endif
 156         .get_irq                = mpic_get_irq,
 157         .restart                = fsl_rstcr_restart,
 158         .calibrate_decr         = generic_calibrate_decr,
 159         .progress               = udbg_progress,
 160 };
 161
 162 define_machine(p1020_rdb) {
 163         .name                   = "P1020 RDB",
 164         .probe                  = p1020_rdb_probe,
 165         .setup_arch             = mpc85xx_rdb_setup_arch,
 166         .init_IRQ               = mpc85xx_rdb_pic_init,
 167 #ifdef CONFIG_PCI
 168         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
 169 #endif
 170         .get_irq                = mpic_get_irq,
 171         .restart                = fsl_rstcr_restart,
 172         .calibrate_decr         = generic_calibrate_decr,
 173         .progress               = udbg_progress,
 174 };