Commit | Line | Data |
---|---|---|
fb180322 JR |
1 | /* |
2 | * Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved. | |
3 | * | |
4 | * Author: John Rigby <jrigby@freescale.com> | |
5 | * | |
6 | * Description: | |
7 | * MPC512x Shared code | |
8 | * | |
9 | * This is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | */ | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/io.h> | |
17 | #include <linux/irq.h> | |
18 | #include <linux/of_platform.h> | |
19 | ||
20 | #include <asm/machdep.h> | |
21 | #include <asm/ipic.h> | |
22 | #include <asm/prom.h> | |
23 | #include <asm/time.h> | |
a8dbceb7 | 24 | #include <asm/mpc5121.h> |
fb180322 JR |
25 | |
26 | #include "mpc512x.h" | |
27 | ||
a8dbceb7 AG |
28 | static struct mpc512x_reset_module __iomem *reset_module_base; |
29 | ||
30 | static void __init mpc512x_restart_init(void) | |
31 | { | |
32 | struct device_node *np; | |
33 | ||
34 | np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-reset"); | |
35 | if (!np) | |
36 | return; | |
37 | ||
38 | reset_module_base = of_iomap(np, 0); | |
39 | of_node_put(np); | |
40 | } | |
41 | ||
42 | void mpc512x_restart(char *cmd) | |
43 | { | |
44 | if (reset_module_base) { | |
45 | /* Enable software reset "RSTE" */ | |
46 | out_be32(&reset_module_base->rpr, 0x52535445); | |
47 | /* Set software hard reset */ | |
48 | out_be32(&reset_module_base->rcr, 0x2); | |
49 | } else { | |
50 | pr_err("Restart module not mapped.\n"); | |
51 | } | |
52 | for (;;) | |
53 | ; | |
54 | } | |
55 | ||
fb180322 JR |
56 | void __init mpc512x_init_IRQ(void) |
57 | { | |
58 | struct device_node *np; | |
59 | ||
60 | np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-ipic"); | |
61 | if (!np) | |
62 | return; | |
63 | ||
64 | ipic_init(np, 0); | |
65 | of_node_put(np); | |
66 | ||
67 | /* | |
68 | * Initialize the default interrupt mapping priorities, | |
69 | * in case the boot rom changed something on us. | |
70 | */ | |
71 | ipic_set_default_priority(); | |
72 | } | |
73 | ||
74 | /* | |
75 | * Nodes to do bus probe on, soc and localbus | |
76 | */ | |
77 | static struct of_device_id __initdata of_bus_ids[] = { | |
78 | { .compatible = "fsl,mpc5121-immr", }, | |
79 | { .compatible = "fsl,mpc5121-localbus", }, | |
80 | {}, | |
81 | }; | |
82 | ||
83 | void __init mpc512x_declare_of_platform_devices(void) | |
84 | { | |
85 | if (of_platform_bus_probe(NULL, of_bus_ids, NULL)) | |
86 | printk(KERN_ERR __FILE__ ": " | |
87 | "Error while probing of_platform bus\n"); | |
88 | } | |
89 | ||
284ed66f AG |
90 | void __init mpc512x_init(void) |
91 | { | |
92 | mpc512x_declare_of_platform_devices(); | |
93 | mpc5121_clk_init(); | |
a8dbceb7 | 94 | mpc512x_restart_init(); |
284ed66f | 95 | } |