root/arch/powerpc/platforms/44x/ppc44x_simple.c

DEFINITIONS

1. ppc44x_device_probe
2. ppc44x_probe
3. define_machine

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Generic PowerPC 44x 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 ppc44x_of_bus[] __initconst = {
  25         { .compatible = "ibm,plb4", },
  26         { .compatible = "ibm,opb", },
  27         { .compatible = "ibm,ebc", },
  28         { .compatible = "simple-bus", },
  29         {},
  30 };
  31 
  32 static int __init ppc44x_device_probe(void)
  33 {
  34         of_platform_bus_probe(NULL, ppc44x_of_bus, NULL);
  35 
  36         return 0;
  37 }
  38 machine_device_initcall(ppc44x_simple, ppc44x_device_probe);
  39 
  40 /* This is the list of boards that can be supported by this simple
  41  * platform code.  This does _not_ mean the boards are compatible,
  42  * as they most certainly are not from a device tree perspective.
  43  * However, their differences are handled by the device tree and the
  44  * drivers and therefore they don't need custom board support files.
  45  *
  46  * Again, if your board needs to do things differently then create a
  47  * board.c file for it rather than adding it to this list.
  48  */
  49 static char *board[] __initdata = {
  50         "amcc,arches",
  51         "amcc,bamboo",
  52         "apm,bluestone",
  53         "amcc,glacier",
  54         "ibm,ebony",
  55         "amcc,eiger",
  56         "amcc,katmai",
  57         "amcc,rainier",
  58         "amcc,redwood",
  59         "amcc,sequoia",
  60         "amcc,taishan",
  61         "amcc,yosemite",
  62         "mosaixtech,icon"
  63 };
  64 
  65 static int __init ppc44x_probe(void)
  66 {
  67         int i = 0;
  68 
  69         for (i = 0; i < ARRAY_SIZE(board); i++) {
  70                 if (of_machine_is_compatible(board[i])) {
  71                         pci_set_flags(PCI_REASSIGN_ALL_RSRC);
  72                         return 1;
  73                 }
  74         }
  75 
  76         return 0;
  77 }
  78 
  79 define_machine(ppc44x_simple) {
  80         .name = "PowerPC 44x Platform",
  81         .probe = ppc44x_probe,
  82         .progress = udbg_progress,
  83         .init_IRQ = uic_init_tree,
  84         .get_irq = uic_get_irq,
  85         .restart = ppc4xx_reset_system,
  86         .calibrate_decr = generic_calibrate_decr,
  87 };