summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/83xx/kmeter1.c
blob: 903acfd851ac9452456afd7c471eb4ef8564640e (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
/*
 * Copyright 2008 DENX Software Engineering GmbH
 * Author: Heiko Schocher <hs@denx.de>
 *
 * Description:
 * Keymile KMETER1 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/root_dev.h>
#include <linux/initrd.h>
#include <linux/of_platform.h>
#include <linux/of_device.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 <asm/qe.h>
#include <asm/qe_ic.h>

#include "mpc83xx.h"

#define SVR_REV(svr)    (((svr) >>  0) & 0xFFFF) /* Revision field */
/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init kmeter1_setup_arch(void)
{
	struct device_node *np;

	if (ppc_md.progress)
		ppc_md.progress("kmeter1_setup_arch()", 0);

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

#ifdef CONFIG_QUICC_ENGINE
	qe_reset();

	np = of_find_node_by_name(NULL, "par_io");
	if (np != NULL) {
		par_io_init(np);
		of_node_put(np);

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

	np = of_find_compatible_node(NULL, "network", "ucc_geth");
	if (np != NULL) {
		uint svid;

		/* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */
		svid = mfspr(SPRN_SVR);
		if (SVR_REV(svid) == 0x0021) {
			struct	device_node *np_par;
			struct	resource res;
			void	__iomem *base;
			int	ret;

			np_par = of_find_node_by_name(NULL, "par_io");
			if (np_par == NULL) {
				printk(KERN_WARNING "%s couldn;t find par_io node\n",
					__func__);
				return;
			}
			/* Map Parallel I/O ports registers */
			ret = of_address_to_resource(np_par, 0, &res);
			if (ret) {
				printk(KERN_WARNING "%s couldn;t map par_io registers\n",
					__func__);
				return;
			}
			base = ioremap(res.start, res.end - res.start + 1);

			/*
			 * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2)
			 * IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1)
			 */
			setbits32((base + 0xa8), 0x0c003000);

			/*
			 * IMMR + 0x14AC[20:27] = 10101010
			 * (data delay for both UCC's)
			 */
			clrsetbits_be32((base + 0xac), 0xff0, 0xaa0);
			iounmap(base);
			of_node_put(np_par);
		}
		of_node_put(np);
	}
#endif				/* CONFIG_QUICC_ENGINE */
}

static struct of_device_id kmeter_ids[] = {
	{ .type = "soc", },
	{ .compatible = "soc", },
	{ .compatible = "simple-bus", },
	{ .type = "qe", },
	{ .compatible = "fsl,qe", },
	{},
};

static int __init kmeter_declare_of_platform_devices(void)
{
	/* Publish the QE devices */
	of_platform_bus_probe(NULL, kmeter_ids, NULL);

	return 0;
}
machine_device_initcall(kmeter1, kmeter_declare_of_platform_devices);

static void __init kmeter1_init_IRQ(void)
{
	struct device_node *np;

	np = of_find_compatible_node(NULL, NULL, "fsl,pq2pro-pic");
	if (!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();
	of_node_put(np);

#ifdef CONFIG_QUICC_ENGINE
	np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
	if (!np) {
		np = of_find_node_by_type(NULL, "qeic");
		if (!np)
			return;
	}
	qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
	of_node_put(np);
#endif				/* CONFIG_QUICC_ENGINE */
}

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init kmeter1_probe(void)
{
	unsigned long root = of_get_flat_dt_root();

	return of_flat_dt_is_compatible(root, "keymile,KMETER1");
}

define_machine(kmeter1) {
	.name		= "KMETER1",
	.probe		= kmeter1_probe,
	.setup_arch	= kmeter1_setup_arch,
	.init_IRQ	= kmeter1_init_IRQ,
	.get_irq	= ipic_get_irq,
	.restart	= mpc83xx_restart,
	.time_init	= mpc83xx_time_init,
	.calibrate_decr	= generic_calibrate_decr,
	.progress	= udbg_progress,
};