summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/85xx/p1023_rds.c
blob: 2ae9d490c3d940954ac2a805ca14764b5c5bf4d8 (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
/*
 * Copyright 2010-2011, 2013 Freescale Semiconductor, Inc.
 *
 * Author: Roy Zang <tie-fei.zang@freescale.com>
 *
 * Description:
 * P1023 RDS Board Setup
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/fsl_devices.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>

#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <mm/mmu_decl.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <asm/mpic.h>
#include "smp.h"

#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

#include "mpc85xx.h"

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc85xx_rds_setup_arch(void)
{
	struct device_node *np;

	if (ppc_md.progress)
		ppc_md.progress("p1023_rds_setup_arch()", 0);

	/* Map BCSR area */
	np = of_find_node_by_name(NULL, "bcsr");
	if (np != NULL) {
		static u8 __iomem *bcsr_regs;

		bcsr_regs = of_iomap(np, 0);
		of_node_put(np);

		if (!bcsr_regs) {
			printk(KERN_ERR
			       "BCSR: Failed to map bcsr register space\n");
			return;
		} else {
#define BCSR15_I2C_BUS0_SEG_CLR		0x07
#define BCSR15_I2C_BUS0_SEG2		0x02
/*
 * Note: Accessing exclusively i2c devices.
 *
 * The i2c controller selects initially ID EEPROM in the u-boot;
 * but if menu configuration selects RTC support in the kernel,
 * the i2c controller switches to select RTC chip in the kernel.
 */
#ifdef CONFIG_RTC_CLASS
			/* Enable RTC chip on the segment #2 of i2c */
			clrbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG_CLR);
			setbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG2);
#endif

			iounmap(bcsr_regs);
		}
	}

	mpc85xx_smp_init();

	fsl_pci_assign_primary();
}

machine_arch_initcall(p1023_rds, mpc85xx_common_publish_devices);
machine_arch_initcall(p1023_rdb, mpc85xx_common_publish_devices);

static void __init mpc85xx_rds_pic_init(void)
{
	struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
		MPIC_SINGLE_DEST_CPU,
		0, 256, " OpenPIC  ");

	BUG_ON(mpic == NULL);

	mpic_init(mpic);
}

static int __init p1023_rds_probe(void)
{
	unsigned long root = of_get_flat_dt_root();

	return of_flat_dt_is_compatible(root, "fsl,P1023RDS");

}

static int __init p1023_rdb_probe(void)
{
	unsigned long root = of_get_flat_dt_root();

	return of_flat_dt_is_compatible(root, "fsl,P1023RDB");

}

define_machine(p1023_rds) {
	.name			= "P1023 RDS",
	.probe			= p1023_rds_probe,
	.setup_arch		= mpc85xx_rds_setup_arch,
	.init_IRQ		= mpc85xx_rds_pic_init,
	.get_irq		= mpic_get_irq,
	.restart		= fsl_rstcr_restart,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
#ifdef CONFIG_PCI
	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
#endif
};

define_machine(p1023_rdb) {
	.name			= "P1023 RDB",
	.probe			= p1023_rdb_probe,
	.setup_arch		= mpc85xx_rds_setup_arch,
	.init_IRQ		= mpc85xx_rds_pic_init,
	.get_irq		= mpic_get_irq,
	.restart		= fsl_rstcr_restart,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
#ifdef CONFIG_PCI
	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
#endif
};
OpenPOWER on IntegriCloud