aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms/85xx/mpc85xx_mds.c
blob: 7ca7e676f1c42cd849c9f25709f3326124038851 (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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
/*
 * Copyright (C) Freescale Semicondutor, Inc. 2006-2007. All rights reserved.
 *
 * Author: Andy Fleming <afleming@freescale.com>
 *
 * Based on 83xx/mpc8360e_pb.c by:
 *	   Li Yang <LeoLi@freescale.com>
 *	   Yin Olivia <Hong-hua.Yin@freescale.com>
 *
 * Description:
 * MPC85xx MDS board specific routines.
 *
 * 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/initrd.h>
#include <linux/module.h>
#include <linux/fsl_devices.h>

#include <asm/of_device.h>
#include <asm/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/bootinfo.h>
#include <asm/pci-bridge.h>
#include <asm/mpc85xx.h>
#include <asm/irq.h>
#include <mm/mmu_decl.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include <asm/qe.h>
#include <asm/qe_ic.h>
#include <asm/mpic.h>

#include "mpc85xx.h"

#undef DEBUG
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc85xx_mds_setup_arch(void)
{
	struct device_node *np;
	static u8 *bcsr_regs = NULL;

	if (ppc_md.progress)
		ppc_md.progress("mpc85xx_mds_setup_arch()", 0);

	np = of_find_node_by_type(NULL, "cpu");
	if (np != NULL) {
		const unsigned int *fp =
		    of_get_property(np, "clock-frequency", NULL);
		if (fp != NULL)
			loops_per_jiffy = *fp / HZ;
		else
			loops_per_jiffy = 50000000 / HZ;
		of_node_put(np);
	}

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

		of_address_to_resource(np, 0, &res);
		bcsr_regs = ioremap(res.start, res.end - res.start +1);
		of_node_put(np);
	}

#ifdef CONFIG_PCI
	for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
		fsl_add_bridge(np, 1);
	of_node_put(np);
#endif

#ifdef CONFIG_QUICC_ENGINE
	if ((np = of_find_node_by_name(NULL, "qe")) != NULL) {
		qe_reset();
		of_node_put(np);
	}

	if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
		struct device_node *ucc = NULL;

		par_io_init(np);
		of_node_put(np);

		for ( ;(ucc = of_find_node_by_name(ucc, "ucc")) != NULL;)
			par_io_of_config(ucc);

		of_node_put(ucc);
	}

	if (bcsr_regs) {
		u8 bcsr_phy;

		/* Reset the Ethernet PHY */
		bcsr_phy = in_be8(&bcsr_regs[9]);
		bcsr_phy &= ~0x20;
		out_be8(&bcsr_regs[9], bcsr_phy);

		udelay(1000);

		bcsr_phy = in_be8(&bcsr_regs[9]);
		bcsr_phy |= 0x20;
		out_be8(&bcsr_regs[9], bcsr_phy);

		iounmap(bcsr_regs);
	}

#endif	/* CONFIG_QUICC_ENGINE */
}

static struct of_device_id mpc85xx_ids[] = {
	{ .type = "soc", },
	{ .compatible = "soc", },
	{ .type = "qe", },
	{},
};

static int __init mpc85xx_publish_devices(void)
{
	if (!machine_is(mpc85xx_mds))
		return 0;

	/* Publish the QE devices */
	of_platform_bus_probe(NULL,mpc85xx_ids,NULL);

	return 0;
}
device_initcall(mpc85xx_publish_devices);

static void __init mpc85xx_mds_pic_init(void)
{
	struct mpic *mpic;
	struct resource r;
	struct device_node *np = NULL;

	np = of_find_node_by_type(NULL, "open-pic");
	if (!np)
		return;

	if (of_address_to_resource(np, 0, &r)) {
		printk(KERN_ERR "Failed to map mpic register space\n");
		of_node_put(np);
		return;
	}

	mpic = mpic_alloc(np, r.start,
			MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
			0, 256, " OpenPIC  ");
	BUG_ON(mpic == NULL);
	of_node_put(np);

	mpic_init(mpic);

#ifdef CONFIG_QUICC_ENGINE
	np = of_find_node_by_type(NULL, "qeic");
	if (!np)
		return;

	qe_ic_init(np, 0);
	of_node_put(np);
#endif				/* CONFIG_QUICC_ENGINE */
}

static int __init mpc85xx_mds_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        return of_flat_dt_is_compatible(root, "MPC85xxMDS");
}

define_machine(mpc85xx_mds) {
	.name		= "MPC85xx MDS",
	.probe		= mpc85xx_mds_probe,
	.setup_arch	= mpc85xx_mds_setup_arch,
	.init_IRQ	= mpc85xx_mds_pic_init,
	.get_irq	= mpic_get_irq,
	.restart	= mpc85xx_restart,
	.calibrate_decr	= generic_calibrate_decr,
	.progress	= udbg_progress,
#ifdef CONFIG_PCI
	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
#endif
};