1b886d83cSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2775d5a11SJosh Boyer /*
3775d5a11SJosh Boyer * Generic PowerPC 44x platform support
4775d5a11SJosh Boyer *
5775d5a11SJosh Boyer * Copyright 2008 IBM Corporation
6775d5a11SJosh Boyer *
7775d5a11SJosh Boyer * This implements simple platform support for PowerPC 44x chips. This is
8775d5a11SJosh Boyer * mostly used for eval boards or other simple and "generic" 44x boards. If
9775d5a11SJosh Boyer * your board has custom functions or hardware, then you will likely want to
10775d5a11SJosh Boyer * implement your own board.c file to accommodate it.
11775d5a11SJosh Boyer */
12775d5a11SJosh Boyer
13775d5a11SJosh Boyer #include <asm/machdep.h>
14775d5a11SJosh Boyer #include <asm/pci-bridge.h>
15775d5a11SJosh Boyer #include <asm/ppc4xx.h>
16775d5a11SJosh Boyer #include <asm/time.h>
17775d5a11SJosh Boyer #include <asm/udbg.h>
18775d5a11SJosh Boyer #include <asm/uic.h>
19775d5a11SJosh Boyer
20775d5a11SJosh Boyer #include <linux/init.h>
21775d5a11SJosh Boyer #include <linux/of_platform.h>
22775d5a11SJosh Boyer
23ce6d73c9SUwe Kleine-König static const struct of_device_id ppc44x_of_bus[] __initconst = {
24775d5a11SJosh Boyer { .compatible = "ibm,plb4", },
25775d5a11SJosh Boyer { .compatible = "ibm,opb", },
26775d5a11SJosh Boyer { .compatible = "ibm,ebc", },
27775d5a11SJosh Boyer { .compatible = "simple-bus", },
28775d5a11SJosh Boyer {},
29775d5a11SJosh Boyer };
30775d5a11SJosh Boyer
ppc44x_device_probe(void)31775d5a11SJosh Boyer static int __init ppc44x_device_probe(void)
32775d5a11SJosh Boyer {
33775d5a11SJosh Boyer of_platform_bus_probe(NULL, ppc44x_of_bus, NULL);
34775d5a11SJosh Boyer
35775d5a11SJosh Boyer return 0;
36775d5a11SJosh Boyer }
37775d5a11SJosh Boyer machine_device_initcall(ppc44x_simple, ppc44x_device_probe);
38775d5a11SJosh Boyer
39775d5a11SJosh Boyer /* This is the list of boards that can be supported by this simple
40775d5a11SJosh Boyer * platform code. This does _not_ mean the boards are compatible,
41775d5a11SJosh Boyer * as they most certainly are not from a device tree perspective.
42775d5a11SJosh Boyer * However, their differences are handled by the device tree and the
43775d5a11SJosh Boyer * drivers and therefore they don't need custom board support files.
44775d5a11SJosh Boyer *
45775d5a11SJosh Boyer * Again, if your board needs to do things differently then create a
46775d5a11SJosh Boyer * board.c file for it rather than adding it to this list.
47775d5a11SJosh Boyer */
48775d5a11SJosh Boyer static char *board[] __initdata = {
49e00de30aSVictor Gallardo "amcc,arches",
50775d5a11SJosh Boyer "amcc,bamboo",
517c801160SVinh Nguyen Huu Tuong "apm,bluestone",
52ded563cfSJosh Boyer "amcc,glacier",
53775d5a11SJosh Boyer "ibm,ebony",
54c9f75093Sfkan@amcc.com "amcc,eiger",
55775d5a11SJosh Boyer "amcc,katmai",
56775d5a11SJosh Boyer "amcc,rainier",
576c712090SMadhulika Madishetty "amcc,redwood",
58775d5a11SJosh Boyer "amcc,sequoia",
5938d56f16SJosh Boyer "amcc,taishan",
60a89eda26SStefan Roese "amcc,yosemite",
61a89eda26SStefan Roese "mosaixtech,icon"
62775d5a11SJosh Boyer };
63775d5a11SJosh Boyer
ppc44x_probe(void)64775d5a11SJosh Boyer static int __init ppc44x_probe(void)
65775d5a11SJosh Boyer {
66775d5a11SJosh Boyer int i = 0;
67775d5a11SJosh Boyer
68775d5a11SJosh Boyer for (i = 0; i < ARRAY_SIZE(board); i++) {
6956571384SBenjamin Herrenschmidt if (of_machine_is_compatible(board[i])) {
700e47ff1cSRob Herring pci_set_flags(PCI_REASSIGN_ALL_RSRC);
71775d5a11SJosh Boyer return 1;
72775d5a11SJosh Boyer }
73775d5a11SJosh Boyer }
74775d5a11SJosh Boyer
75775d5a11SJosh Boyer return 0;
76775d5a11SJosh Boyer }
77775d5a11SJosh Boyer
define_machine(ppc44x_simple)78775d5a11SJosh Boyer define_machine(ppc44x_simple) {
79775d5a11SJosh Boyer .name = "PowerPC 44x Platform",
80775d5a11SJosh Boyer .probe = ppc44x_probe,
81775d5a11SJosh Boyer .progress = udbg_progress,
82775d5a11SJosh Boyer .init_IRQ = uic_init_tree,
83775d5a11SJosh Boyer .get_irq = uic_get_irq,
84775d5a11SJosh Boyer .restart = ppc4xx_reset_system,
85775d5a11SJosh Boyer };
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