root/arch/powerpc/platforms/40x/ppc40x_simple.c

DEFINITIONS

1. ppc40x_device_probe
2. ppc40x_probe
3. define_machine

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Generic PowerPC 40x platform support
   4  *
   5  * Copyright 2008 IBM Corporation
   6  *
   7  * This implements simple platform support for PowerPC 44x chips.  This is
   8  * mostly used for eval boards or other simple and "generic" 44x boards.  If
   9  * your board has custom functions or hardware, then you will likely want to
  10  * implement your own board.c file to accommodate it.
  11  */
  12 
  13 #include <asm/machdep.h>
  14 #include <asm/pci-bridge.h>
  15 #include <asm/ppc4xx.h>
  16 #include <asm/prom.h>
  17 #include <asm/time.h>
  18 #include <asm/udbg.h>
  19 #include <asm/uic.h>
  20 
  21 #include <linux/init.h>
  22 #include <linux/of_platform.h>
  23 
  24 static const struct of_device_id ppc40x_of_bus[] __initconst = {
  25         { .compatible = "ibm,plb3", },
  26         { .compatible = "ibm,plb4", },
  27         { .compatible = "ibm,opb", },
  28         { .compatible = "ibm,ebc", },
  29         { .compatible = "simple-bus", },
  30         {},
  31 };
  32 
  33 static int __init ppc40x_device_probe(void)
  34 {
  35         of_platform_bus_probe(NULL, ppc40x_of_bus, NULL);
  36 
  37         return 0;
  38 }
  39 machine_device_initcall(ppc40x_simple, ppc40x_device_probe);
  40 
  41 /* This is the list of boards that can be supported by this simple
  42  * platform code.  This does _not_ mean the boards are compatible,
  43  * as they most certainly are not from a device tree perspective.
  44  * However, their differences are handled by the device tree and the
  45  * drivers and therefore they don't need custom board support files.
  46  *
  47  * Again, if your board needs to do things differently then create a
  48  * board.c file for it rather than adding it to this list.
  49  */
  50 static const char * const board[] __initconst = {
  51         "amcc,acadia",
  52         "amcc,haleakala",
  53         "amcc,kilauea",
  54         "amcc,makalu",
  55         "apm,klondike",
  56         "est,hotfoot",
  57         "plathome,obs600",
  58         NULL
  59 };
  60 
  61 static int __init ppc40x_probe(void)
  62 {
  63         if (of_device_compatible_match(of_root, board)) {
  64                 pci_set_flags(PCI_REASSIGN_ALL_RSRC);
  65                 return 1;
  66         }
  67 
  68         return 0;
  69 }
  70 
  71 define_machine(ppc40x_simple) {
  72         .name = "PowerPC 40x Platform",
  73         .probe = ppc40x_probe,
  74         .progress = udbg_progress,
  75         .init_IRQ = uic_init_tree,
  76         .get_irq = uic_get_irq,
  77         .restart = ppc4xx_reset_system,
  78         .calibrate_decr = generic_calibrate_decr,
  79 };