summaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms/85xx/tqm85xx.c
blob: 3e70a2035e53c50b68e3625b87d5634b8041fffb (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
/*
 * Based on MPC8560 ADS and arch/ppc tqm85xx ports
 *
 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
 *
 * Copyright 2008 Freescale Semiconductor Inc.
 *
 * Copyright (c) 2005-2006 DENX Software Engineering
 * Stefan Roese <sr@denx.de>
 *
 * Based on original work by
 * 	Kumar Gala <kumar.gala@freescale.com>
 *      Copyright 2004 Freescale Semiconductor Inc.
 *
 * 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/pci.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/of_platform.h>

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

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

#include "mpc85xx.h"

#ifdef CONFIG_CPM2
#include <asm/cpm2.h>
#endif /* CONFIG_CPM2 */

static void __init tqm85xx_pic_init(void)
{
	struct mpic *mpic = mpic_alloc(NULL, 0,
			MPIC_BIG_ENDIAN,
			0, 256, " OpenPIC  ");
	BUG_ON(mpic == NULL);
	mpic_init(mpic);

	mpc85xx_cpm2_pic_init();
}

/*
 * Setup the architecture
 */
static void __init tqm85xx_setup_arch(void)
{
#ifdef CONFIG_PCI
	struct device_node *np;
#endif

	if (ppc_md.progress)
		ppc_md.progress("tqm85xx_setup_arch()", 0);

#ifdef CONFIG_CPM2
	cpm2_reset();
#endif

#ifdef CONFIG_PCI
	for_each_node_by_type(np, "pci") {
		if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
		    of_device_is_compatible(np, "fsl,mpc8548-pcie")) {
			struct resource rsrc;
			if (!of_address_to_resource(np, 0, &rsrc)) {
				if ((rsrc.start & 0xfffff) == 0x8000)
					fsl_add_bridge(np, 1);
				else
					fsl_add_bridge(np, 0);
			}
		}
	}
#endif
}

static void tqm85xx_show_cpuinfo(struct seq_file *m)
{
	uint pvid, svid, phid1;

	pvid = mfspr(SPRN_PVR);
	svid = mfspr(SPRN_SVR);

	seq_printf(m, "Vendor\t\t: TQ Components\n");
	seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
	seq_printf(m, "SVR\t\t: 0x%x\n", svid);

	/* Display cpu Pll setting */
	phid1 = mfspr(SPRN_HID1);
	seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
}

static void __devinit tqm85xx_ti1520_fixup(struct pci_dev *pdev)
{
	unsigned int val;

	/* Do not do the fixup on other platforms! */
	if (!machine_is(tqm85xx))
		return;

	dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n");

	/*
	 * Enable P2CCLK bit in system control register
	 * to enable CLOCK output to power chip
	 */
	pci_read_config_dword(pdev, 0x80, &val);
	pci_write_config_dword(pdev, 0x80, val | (1 << 27));

}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520,
		tqm85xx_ti1520_fixup);

machine_device_initcall(tqm85xx, mpc85xx_common_publish_devices);

static const char *board[] __initdata = {
	"tqc,tqm8540",
	"tqc,tqm8541",
	"tqc,tqm8548",
	"tqc,tqm8555",
	"tqc,tqm8560",
	NULL
};

/*
 * Called very early, device-tree isn't unflattened
 */
static int __init tqm85xx_probe(void)
{
	return of_flat_dt_match(of_get_flat_dt_root(), board);
}

define_machine(tqm85xx) {
	.name			= "TQM85xx",
	.probe			= tqm85xx_probe,
	.setup_arch		= tqm85xx_setup_arch,
	.init_IRQ		= tqm85xx_pic_init,
	.show_cpuinfo		= tqm85xx_show_cpuinfo,
	.get_irq		= mpic_get_irq,
	.restart		= fsl_rstcr_restart,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
};