1 /*
2 * arch/powerpc/platforms/83xx/mpc837x_rdb.c
3 *
4 * Copyright (C) 2007 Freescale Semicondutor, Inc. All rights reserved.
5 *
6 * MPC837x RDB board specific routines
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 */
13
14 #include <linux/pci.h>
15 #include <linux/of_platform.h>
16
17 #include <asm/time.h>
18 #include <asm/ipic.h>
19 #include <asm/udbg.h>
20 #include <sysdev/fsl_soc.h>
21 #include <sysdev/fsl_pci.h>
22
23 #include "mpc83xx.h"
24
mpc837x_rdb_sd_cfg(void)25 static void mpc837x_rdb_sd_cfg(void)
26 {
27 void __iomem *im;
28
29 im = ioremap(get_immrbase(), 0x1000);
30 if (!im) {
31 WARN_ON(1);
32 return;
33 }
34
35 /*
36 * On RDB boards (in contrast to MDS) USBB pins are used for SD only,
37 * so we can safely mux them away from the USB block.
38 */
39 clrsetbits_be32(im + MPC83XX_SICRL_OFFS, MPC837X_SICRL_USBB_MASK,
40 MPC837X_SICRL_SD);
41 clrsetbits_be32(im + MPC83XX_SICRH_OFFS, MPC837X_SICRH_SPI_MASK,
42 MPC837X_SICRH_SD);
43 iounmap(im);
44 }
45
46 /* ************************************************************************
47 *
48 * Setup the architecture
49 *
50 */
mpc837x_rdb_setup_arch(void)51 static void __init mpc837x_rdb_setup_arch(void)
52 {
53 #ifdef CONFIG_PCI
54 struct device_node *np;
55 #endif
56
57 if (ppc_md.progress)
58 ppc_md.progress("mpc837x_rdb_setup_arch()", 0);
59
60 #ifdef CONFIG_PCI
61 for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
62 mpc83xx_add_bridge(np);
63 for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
64 mpc83xx_add_bridge(np);
65 #endif
66 mpc837x_usb_cfg();
67 mpc837x_rdb_sd_cfg();
68 }
69
70 static struct of_device_id mpc837x_ids[] = {
71 { .type = "soc", },
72 { .compatible = "soc", },
73 { .compatible = "simple-bus", },
74 { .compatible = "gianfar", },
75 { .compatible = "gpio-leds", },
76 {},
77 };
78
mpc837x_declare_of_platform_devices(void)79 static int __init mpc837x_declare_of_platform_devices(void)
80 {
81 /* Publish platform_device */
82 of_platform_bus_probe(NULL, mpc837x_ids, NULL);
83
84 return 0;
85 }
86 machine_device_initcall(mpc837x_rdb, mpc837x_declare_of_platform_devices);
87
mpc837x_rdb_init_IRQ(void)88 static void __init mpc837x_rdb_init_IRQ(void)
89 {
90 struct device_node *np;
91
92 np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
93 if (!np)
94 return;
95
96 ipic_init(np, 0);
97
98 /* Initialize the default interrupt mapping priorities,
99 * in case the boot rom changed something on us.
100 */
101 ipic_set_default_priority();
102 }
103
104 static const char *board[] __initdata = {
105 "fsl,mpc8377rdb",
106 "fsl,mpc8378rdb",
107 "fsl,mpc8379rdb",
108 "fsl,mpc8377wlan",
109 NULL
110 };
111
112 /*
113 * Called very early, MMU is off, device-tree isn't unflattened
114 */
mpc837x_rdb_probe(void)115 static int __init mpc837x_rdb_probe(void)
116 {
117 return of_flat_dt_match(of_get_flat_dt_root(), board);
118 }
119
define_machine(mpc837x_rdb)120 define_machine(mpc837x_rdb) {
121 .name = "MPC837x RDB/WLAN",
122 .probe = mpc837x_rdb_probe,
123 .setup_arch = mpc837x_rdb_setup_arch,
124 .init_IRQ = mpc837x_rdb_init_IRQ,
125 .get_irq = ipic_get_irq,
126 .restart = mpc83xx_restart,
127 .time_init = mpc83xx_time_init,
128 .calibrate_decr = generic_calibrate_decr,
129 .progress = udbg_progress,
130 };
131