summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/83xx/mpc834x_mds.c
blob: c1b1dc50b32af92520f8f1c5f097759f6a1dcd9b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
/*
 * arch/powerpc/platforms/83xx/mpc834x_mds.c
 *
 * MPC834x MDS board specific routines
 *
 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/of_platform.h>

#include <asm/system.h>
#include <asm/atomic.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

#include "mpc83xx.h"

#define BCSR5_INT_USB		0x02
static int mpc834xemds_usb_cfg(void)
{
	struct device_node *np;
	void __iomem *bcsr_regs = NULL;
	u8 bcsr5;

	mpc834x_usb_cfg();
	/* Map BCSR area */
	np = of_find_node_by_name(NULL, "bcsr");
	if (np) {
		struct resource res;

		of_address_to_resource(np, 0, &res);
		bcsr_regs = ioremap(res.start, resource_size(&res));
		of_node_put(np);
	}
	if (!bcsr_regs)
		return -1;

	/*
	 * if Processor Board is plugged into PIB board,
	 * force to use the PHY on Processor Board
	 */
	bcsr5 = in_8(bcsr_regs + 5);
	if (!(bcsr5 & BCSR5_INT_USB))
		out_8(bcsr_regs + 5, (bcsr5 | BCSR5_INT_USB));
	iounmap(bcsr_regs);
	return 0;
}

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc834x_mds_setup_arch(void)
{
#ifdef CONFIG_PCI
	struct device_node *np;
#endif

	if (ppc_md.progress)
		ppc_md.progress("mpc834x_mds_setup_arch()", 0);

#ifdef CONFIG_PCI
	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
		mpc83xx_add_bridge(np);
#endif

	mpc834xemds_usb_cfg();
}

static void __init mpc834x_mds_init_IRQ(void)
{
	struct device_node *np;

	np = of_find_node_by_type(NULL, "ipic");
	if (!np)
		return;

	ipic_init(np, 0);

	/* Initialize the default interrupt mapping priorities,
	 * in case the boot rom changed something on us.
	 */
	ipic_set_default_priority();
}

static struct of_device_id mpc834x_ids[] = {
	{ .type = "soc", },
	{ .compatible = "soc", },
	{ .compatible = "simple-bus", },
	{ .compatible = "gianfar", },
	{},
};

static int __init mpc834x_declare_of_platform_devices(void)
{
	of_platform_bus_probe(NULL, mpc834x_ids, NULL);
	return 0;
}
machine_device_initcall(mpc834x_mds, mpc834x_declare_of_platform_devices);

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init mpc834x_mds_probe(void)
{
	unsigned long root = of_get_flat_dt_root();

	return of_flat_dt_is_compatible(root, "MPC834xMDS");
}

define_machine(mpc834x_mds) {
	.name			= "MPC834x MDS",
	.probe			= mpc834x_mds_probe,
	.setup_arch		= mpc834x_mds_setup_arch,
	.init_IRQ		= mpc834x_mds_init_IRQ,
	.get_irq		= ipic_get_irq,
	.restart		= mpc83xx_restart,
	.time_init		= mpc83xx_time_init,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
};
OpenPOWER on IntegriCloud