arch/powerpc/platforms/85xx/socrates.c

   1 /*
   2  * Copyright (c) 2008 Emcraft Systems
   3  * Sergei Poselenov <sposelenov@emcraft.com>
   4  *
   5  * Based on MPC8560 ADS and arch/ppc tqm85xx ports
   6  *
   7  * Maintained by Kumar Gala (see MAINTAINERS for contact information)
   8  *
   9  * Copyright 2008 Freescale Semiconductor Inc.
  10  *
  11  * Copyright (c) 2005-2006 DENX Software Engineering
  12  * Stefan Roese <sr@denx.de>
  13  *
  14  * Based on original work by
  15  *      Kumar Gala <kumar.gala@freescale.com>
  16  *      Copyright 2004 Freescale Semiconductor Inc.
  17  *
  18  * This program is free software; you can redistribute  it and/or modify it
  19  * under  the terms of  the GNU General  Public License as published by the
  20  * Free Software Foundation;  either version 2 of the  License, or (at your
  21  * option) any later version.
  22  */
  23
  24 #include <linux/stddef.h>
  25 #include <linux/kernel.h>
  26 #include <linux/pci.h>
  27 #include <linux/kdev_t.h>
  28 #include <linux/delay.h>
  29 #include <linux/seq_file.h>
  30 #include <linux/of_platform.h>
  31
  32 #include <asm/system.h>
  33 #include <asm/time.h>
  34 #include <asm/machdep.h>
  35 #include <asm/pci-bridge.h>
  36 #include <asm/mpic.h>
  37 #include <asm/prom.h>
  38 #include <mm/mmu_decl.h>
  39 #include <asm/udbg.h>
  40
  41 #include <sysdev/fsl_soc.h>
  42 #include <sysdev/fsl_pci.h>
  43
  44 #include "mpc85xx.h"
  45 #include "socrates_fpga_pic.h"
  46
  47 static void __init socrates_pic_init(void)
  48 {
  49         struct device_node *np;
  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         np = of_find_compatible_node(NULL, NULL, "abb,socrates-fpga-pic");
  58         if (!np) {
  59                 printk(KERN_ERR "Could not find socrates-fpga-pic node\n");
  60                 return;
  61         }
  62         socrates_fpga_pic_init(np);
  63         of_node_put(np);
  64 }
  65
  66 /*
  67  * Setup the architecture
  68  */
  69 static void __init socrates_setup_arch(void)
  70 {
  71 #ifdef CONFIG_PCI
  72         struct device_node *np;
  73 #endif
  74
  75         if (ppc_md.progress)
  76                 ppc_md.progress("socrates_setup_arch()", 0);
  77
  78 #ifdef CONFIG_PCI
  79         for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
  80                 fsl_add_bridge(np, 1);
  81 #endif
  82 }
  83
  84 machine_device_initcall(socrates, mpc85xx_common_publish_devices);
  85
  86 /*
  87  * Called very early, device-tree isn't unflattened
  88  */
  89 static int __init socrates_probe(void)
  90 {
  91         unsigned long root = of_get_flat_dt_root();
  92
  93         if (of_flat_dt_is_compatible(root, "abb,socrates"))
  94                 return 1;
  95
  96         return 0;
  97 }
  98
  99 define_machine(socrates) {
 100         .name                   = "Socrates",
 101         .probe                  = socrates_probe,
 102         .setup_arch             = socrates_setup_arch,
 103         .init_IRQ               = socrates_pic_init,
 104         .get_irq                = mpic_get_irq,
 105         .restart                = fsl_rstcr_restart,
 106         .calibrate_decr         = generic_calibrate_decr,
 107         .progress               = udbg_progress,
 108 };