aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms/85xx/mpc85xx_ads.c
blob: d19f675cb369f886978e0763ff891aa7f1474f9d (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
/*
 * MPC85xx setup and early boot code plus other random bits.
 *
 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
 *
 * Copyright 2005 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/system.h>
#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/mpic.h>
#include <mm/mmu_decl.h>
#include <asm/udbg.h>

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

#ifdef CONFIG_CPM2
#include <asm/cpm2.h>
#include <sysdev/cpm2_pic.h>
#endif

#include "mpc85xx.h"

#ifdef CONFIG_PCI
static int mpc85xx_exclude_device(struct pci_controller *hose,
				   u_char bus, u_char devfn)
{
	if (bus == 0 && PCI_SLOT(devfn) == 0)
		return PCIBIOS_DEVICE_NOT_FOUND;
	else
		return PCIBIOS_SUCCESSFUL;
}
#endif /* CONFIG_PCI */

static void __init mpc85xx_ads_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
 */
#ifdef CONFIG_CPM2
struct cpm_pin {
	int port, pin, flags;
};

static const struct cpm_pin mpc8560_ads_pins[] = {
	/* SCC1 */
	{3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
	{3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},

	/* SCC2 */
	{2, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{2, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},

	/* FCC2 */
	{1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
	{1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */
	{2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */

	/* FCC3 */
	{1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
	{1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
	{2, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK16 */
	{2, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK15 */
	{2, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
};

static void __init init_ioports(void)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(mpc8560_ads_pins); i++) {
		const struct cpm_pin *pin = &mpc8560_ads_pins[i];
		cpm2_set_pin(pin->port, pin->pin, pin->flags);
	}

	cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
	cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
	cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
	cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
	cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
	cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
	cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX);
	cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX);
}
#endif

static void __init mpc85xx_ads_setup_arch(void)
{
#ifdef CONFIG_PCI
	struct device_node *np;
#endif

	if (ppc_md.progress)
		ppc_md.progress("mpc85xx_ads_setup_arch()", 0);

#ifdef CONFIG_CPM2
	cpm2_reset();
	init_ioports();
#endif

#ifdef CONFIG_PCI
	for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
		fsl_add_bridge(np, 1);

	ppc_md.pci_exclude_device = mpc85xx_exclude_device;
#endif
}

static void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
{
	uint pvid, svid, phid1;

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

	seq_printf(m, "Vendor\t\t: Freescale Semiconductor\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));
}

machine_device_initcall(mpc85xx_ads, mpc85xx_common_publish_devices);

/*
 * Called very early, device-tree isn't unflattened
 */
static int __init mpc85xx_ads_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        return of_flat_dt_is_compatible(root, "MPC85xxADS");
}

define_machine(mpc85xx_ads) {
	.name			= "MPC85xx ADS",
	.probe			= mpc85xx_ads_probe,
	.setup_arch		= mpc85xx_ads_setup_arch,
	.init_IRQ		= mpc85xx_ads_pic_init,
	.show_cpuinfo		= mpc85xx_ads_show_cpuinfo,
	.get_irq		= mpic_get_irq,
	.restart		= fsl_rstcr_restart,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
};