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
  48         np = of_find_node_by_type(NULL, "open-pic");
  49         if (np == NULL) {
  50                 printk(KERN_ERR "Could not find open-pic node\n");
  51                 return;
  52         }
  53
  54         if (of_address_to_resource(np, 0, &r)) {
  55                 printk(KERN_ERR "Failed to map mpic register space\n");
  56                 of_node_put(np);
  57                 return;
  58         }
  59
  60         mpic = mpic_alloc(np, r.start,
  61                   MPIC_PRIMARY | MPIC_WANTS_RESET |
  62                   MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
  63                   MPIC_SINGLE_DEST_CPU,
  64                   0, 256, " OpenPIC  ");
  65
  66         BUG_ON(mpic == NULL);
  67         of_node_put(np);
  68
  69         mpic_init(mpic);
  70
  71 }
  72
  73 /*
  74  * Setup the architecture
  75  */
  76 #ifdef CONFIG_SMP
  77 extern void __init mpc85xx_smp_init(void);
  78 #endif
  79 static void __init mpc85xx_rdb_setup_arch(void)
  80 {
  81 #ifdef CONFIG_PCI
  82         struct device_node *np;
  83 #endif
  84
  85         if (ppc_md.progress)
  86                 ppc_md.progress("mpc85xx_rdb_setup_arch()", 0);
  87
  88 #ifdef CONFIG_PCI
  89         for_each_node_by_type(np, "pci") {
  90                 if (of_device_is_compatible(np, "fsl,mpc8548-pcie"))
  91                         fsl_add_bridge(np, 0);
  92         }
  93
  94 #endif
  95
  96 #ifdef CONFIG_SMP
  97         mpc85xx_smp_init();
  98 #endif
  99
 100         printk(KERN_INFO "MPC85xx RDB board from Freescale Semiconductor\n");
 101 }
 102
 103 static struct of_device_id __initdata mpc85xxrdb_ids[] = {
 104         { .type = "soc", },
 105         { .compatible = "soc", },
 106         { .compatible = "simple-bus", },
 107         { .compatible = "gianfar", },
 108         {},
 109 };
 110
 111 static int __init mpc85xxrdb_publish_devices(void)
 112 {
 113         return of_platform_bus_probe(NULL, mpc85xxrdb_ids, NULL);
 114 }
 115 machine_device_initcall(p2020_rdb, mpc85xxrdb_publish_devices);
 116
 117 /*
 118  * Called very early, device-tree isn't unflattened
 119  */
 120 static int __init p2020_rdb_probe(void)
 121 {
 122         unsigned long root = of_get_flat_dt_root();
 123
 124         if (of_flat_dt_is_compatible(root, "fsl,P2020RDB"))
 125                 return 1;
 126         return 0;
 127 }
 128
 129 define_machine(p2020_rdb) {
 130         .name                   = "P2020 RDB",
 131         .probe                  = p2020_rdb_probe,
 132         .setup_arch             = mpc85xx_rdb_setup_arch,
 133         .init_IRQ               = mpc85xx_rdb_pic_init,
 134 #ifdef CONFIG_PCI
 135         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
 136 #endif
 137         .get_irq                = mpic_get_irq,
 138         .restart                = fsl_rstcr_restart,
 139         .calibrate_decr         = generic_calibrate_decr,
 140         .progress               = udbg_progress,
 141 };