1 /*
2 * arch/powerpc/platforms/83xx/sbc834x.c
3 *
4 * Wind River SBC834x board specific routines
5 *
6 * By Paul Gortmaker (see MAINTAINERS for contact information)
7 *
8 * Based largely on the mpc834x_mds.c support by Kumar Gala.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 */
15
16 #include <linux/stddef.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/errno.h>
20 #include <linux/reboot.h>
21 #include <linux/pci.h>
22 #include <linux/kdev_t.h>
23 #include <linux/major.h>
24 #include <linux/console.h>
25 #include <linux/delay.h>
26 #include <linux/seq_file.h>
27 #include <linux/root_dev.h>
28 #include <linux/of_platform.h>
29
30 #include <asm/system.h>
31 #include <asm/atomic.h>
32 #include <asm/time.h>
33 #include <asm/io.h>
34 #include <asm/machdep.h>
35 #include <asm/ipic.h>
36 #include <asm/irq.h>
37 #include <asm/prom.h>
38 #include <asm/udbg.h>
39 #include <sysdev/fsl_soc.h>
40 #include <sysdev/fsl_pci.h>
41
42 #include "mpc83xx.h"
43
44 /* ************************************************************************
45 *
46 * Setup the architecture
47 *
48 */
sbc834x_setup_arch(void)49 static void __init sbc834x_setup_arch(void)
50 {
51 #ifdef CONFIG_PCI
52 struct device_node *np;
53 #endif
54
55 if (ppc_md.progress)
56 ppc_md.progress("sbc834x_setup_arch()", 0);
57
58 #ifdef CONFIG_PCI
59 for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
60 mpc83xx_add_bridge(np);
61 #endif
62
63 }
64
sbc834x_init_IRQ(void)65 static void __init sbc834x_init_IRQ(void)
66 {
67 struct device_node *np;
68
69 np = of_find_node_by_type(NULL, "ipic");
70 if (!np)
71 return;
72
73 ipic_init(np, 0);
74
75 /* Initialize the default interrupt mapping priorities,
76 * in case the boot rom changed something on us.
77 */
78 ipic_set_default_priority();
79
80 of_node_put(np);
81 }
82
83 static struct __initdata of_device_id sbc834x_ids[] = {
84 { .type = "soc", },
85 { .compatible = "soc", },
86 { .compatible = "simple-bus", },
87 {},
88 };
89
sbc834x_declare_of_platform_devices(void)90 static int __init sbc834x_declare_of_platform_devices(void)
91 {
92 of_platform_bus_probe(NULL, sbc834x_ids, NULL);
93 return 0;
94 }
95 machine_device_initcall(sbc834x, sbc834x_declare_of_platform_devices);
96
97 /*
98 * Called very early, MMU is off, device-tree isn't unflattened
99 */
sbc834x_probe(void)100 static int __init sbc834x_probe(void)
101 {
102 unsigned long root = of_get_flat_dt_root();
103
104 return of_flat_dt_is_compatible(root, "SBC834x");
105 }
106
define_machine(sbc834x)107 define_machine(sbc834x) {
108 .name = "SBC834x",
109 .probe = sbc834x_probe,
110 .setup_arch = sbc834x_setup_arch,
111 .init_IRQ = sbc834x_init_IRQ,
112 .get_irq = ipic_get_irq,
113 .restart = mpc83xx_restart,
114 .time_init = mpc83xx_time_init,
115 .calibrate_decr = generic_calibrate_decr,
116 .progress = udbg_progress,
117 };
118