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775d5a11 JB |
1 | /* |
2 | * Generic PowerPC 44x platform support | |
3 | * | |
4 | * Copyright 2008 IBM Corporation | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; version 2 of the License. | |
9 | * | |
10 | * This implements simple platform support for PowerPC 44x chips. This is | |
11 | * mostly used for eval boards or other simple and "generic" 44x boards. If | |
12 | * your board has custom functions or hardware, then you will likely want to | |
13 | * implement your own board.c file to accommodate it. | |
14 | */ | |
15 | ||
16 | #include <asm/machdep.h> | |
17 | #include <asm/pci-bridge.h> | |
18 | #include <asm/ppc4xx.h> | |
19 | #include <asm/prom.h> | |
20 | #include <asm/time.h> | |
21 | #include <asm/udbg.h> | |
22 | #include <asm/uic.h> | |
23 | ||
24 | #include <linux/init.h> | |
25 | #include <linux/of_platform.h> | |
26 | ||
ce6d73c9 | 27 | static const struct of_device_id ppc44x_of_bus[] __initconst = { |
775d5a11 JB |
28 | { .compatible = "ibm,plb4", }, |
29 | { .compatible = "ibm,opb", }, | |
30 | { .compatible = "ibm,ebc", }, | |
31 | { .compatible = "simple-bus", }, | |
32 | {}, | |
33 | }; | |
34 | ||
35 | static int __init ppc44x_device_probe(void) | |
36 | { | |
37 | of_platform_bus_probe(NULL, ppc44x_of_bus, NULL); | |
38 | ||
39 | return 0; | |
40 | } | |
41 | machine_device_initcall(ppc44x_simple, ppc44x_device_probe); | |
42 | ||
43 | /* This is the list of boards that can be supported by this simple | |
44 | * platform code. This does _not_ mean the boards are compatible, | |
45 | * as they most certainly are not from a device tree perspective. | |
46 | * However, their differences are handled by the device tree and the | |
47 | * drivers and therefore they don't need custom board support files. | |
48 | * | |
49 | * Again, if your board needs to do things differently then create a | |
50 | * board.c file for it rather than adding it to this list. | |
51 | */ | |
52 | static char *board[] __initdata = { | |
e00de30a | 53 | "amcc,arches", |
775d5a11 | 54 | "amcc,bamboo", |
7c801160 | 55 | "apm,bluestone", |
ded563cf | 56 | "amcc,glacier", |
775d5a11 | 57 | "ibm,ebony", |
c9f75093 | 58 | "amcc,eiger", |
775d5a11 JB |
59 | "amcc,katmai", |
60 | "amcc,rainier", | |
6c712090 | 61 | "amcc,redwood", |
775d5a11 | 62 | "amcc,sequoia", |
38d56f16 | 63 | "amcc,taishan", |
a89eda26 SR |
64 | "amcc,yosemite", |
65 | "mosaixtech,icon" | |
775d5a11 JB |
66 | }; |
67 | ||
68 | static int __init ppc44x_probe(void) | |
69 | { | |
70 | unsigned long root = of_get_flat_dt_root(); | |
71 | int i = 0; | |
72 | ||
73 | for (i = 0; i < ARRAY_SIZE(board); i++) { | |
74 | if (of_flat_dt_is_compatible(root, board[i])) { | |
0e47ff1c | 75 | pci_set_flags(PCI_REASSIGN_ALL_RSRC); |
775d5a11 JB |
76 | return 1; |
77 | } | |
78 | } | |
79 | ||
80 | return 0; | |
81 | } | |
82 | ||
83 | define_machine(ppc44x_simple) { | |
84 | .name = "PowerPC 44x Platform", | |
85 | .probe = ppc44x_probe, | |
86 | .progress = udbg_progress, | |
87 | .init_IRQ = uic_init_tree, | |
88 | .get_irq = uic_get_irq, | |
89 | .restart = ppc4xx_reset_system, | |
90 | .calibrate_decr = generic_calibrate_decr, | |
91 | }; |