arch/powerpc/platforms/44x/ebony.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Ebony board specific routines
   4  *
   5  * Matt Porter <mporter@kernel.crashing.org>
   6  * Copyright 2002-2005 MontaVista Software Inc.
   7  *
   8  * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
   9  * Copyright (c) 2003-2005 Zultys Technologies
  10  *
  11  * Rewritten and ported to the merged powerpc tree:
  12  * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
  13  */
  14
  15 #include <linux/init.h>
  16 #include <linux/of_platform.h>
  17 #include <linux/rtc.h>
  18
  19 #include <asm/machdep.h>
  20 #include <asm/prom.h>
  21 #include <asm/udbg.h>
  22 #include <asm/time.h>
  23 #include <asm/uic.h>
  24 #include <asm/pci-bridge.h>
  25 #include <asm/ppc4xx.h>
  26
  27 static const struct of_device_id ebony_of_bus[] __initconst = {
  28         { .compatible = "ibm,plb4", },
  29         { .compatible = "ibm,opb", },
  30         { .compatible = "ibm,ebc", },
  31         {},
  32 };
  33
  34 static int __init ebony_device_probe(void)
  35 {
  36         of_platform_bus_probe(NULL, ebony_of_bus, NULL);
  37         of_instantiate_rtc();
  38
  39         return 0;
  40 }
  41 machine_device_initcall(ebony, ebony_device_probe);
  42
  43 /*
  44  * Called very early, MMU is off, device-tree isn't unflattened
  45  */
  46 static int __init ebony_probe(void)
  47 {
  48         if (!of_machine_is_compatible("ibm,ebony"))
  49                 return 0;
  50
  51         pci_set_flags(PCI_REASSIGN_ALL_RSRC);
  52
  53         return 1;
  54 }
  55
  56 define_machine(ebony) {
  57         .name                   = "Ebony",
  58         .probe                  = ebony_probe,
  59         .progress               = udbg_progress,
  60         .init_IRQ               = uic_init_tree,
  61         .get_irq                = uic_get_irq,
  62         .restart                = ppc4xx_reset_system,
  63         .calibrate_decr         = generic_calibrate_decr,
  64 };