summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/85xx/sbc8560.c
blob: 3c3bbcc275669b45a79c4d85cd4928a9b88b7285 (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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
/*
 * Wind River SBC8560 setup and early boot code.
 *
 * Copyright 2007 Wind River Systems Inc.
 *
 * By Paul Gortmaker (see MAINTAINERS for contact information)
 *
 * Based largely on the MPC8560ADS support - Copyright 2005 Freescale 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>

#include "mpc85xx.h"

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

static void __init sbc8560_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 sbc8560_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 */
	{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, 7, 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_SECONDARY}, /* CLK16 */
	{2, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK15 */
};

static void __init init_ioports(void)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(sbc8560_pins); i++) {
		const struct cpm_pin *pin = &sbc8560_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 sbc8560_setup_arch(void)
{
#ifdef CONFIG_PCI
	struct device_node *np;
#endif

	if (ppc_md.progress)
		ppc_md.progress("sbc8560_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);
#endif
}

static void sbc8560_show_cpuinfo(struct seq_file *m)
{
	uint pvid, svid, phid1;

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

	seq_printf(m, "Vendor\t\t: Wind River\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(sbc8560, mpc85xx_common_publish_devices);

/*
 * Called very early, device-tree isn't unflattened
 */
static int __init sbc8560_probe(void)
{
        unsigned long root = of_get_flat_dt_root();

        return of_flat_dt_is_compatible(root, "SBC8560");
}

#ifdef CONFIG_RTC_DRV_M48T59
static int __init sbc8560_rtc_init(void)
{
	struct device_node *np;
	struct resource res;
	struct platform_device *rtc_dev;

	np = of_find_compatible_node(NULL, NULL, "m48t59");
	if (np == NULL) {
		printk("No RTC in DTB. Has it been eaten by wild dogs?\n");
		return -ENODEV;
	}

	of_address_to_resource(np, 0, &res);
	of_node_put(np);

	printk("Found RTC (m48t59) at i/o 0x%x\n", res.start);

	rtc_dev = platform_device_register_simple("rtc-m48t59", 0, &res, 1);

	if (IS_ERR(rtc_dev)) {
		printk("Registering sbc8560 RTC device failed\n");
		return PTR_ERR(rtc_dev);
	}

	return 0;
}

arch_initcall(sbc8560_rtc_init);

#endif	/* M48T59 */

static __u8 __iomem *brstcr;

static int __init sbc8560_bdrstcr_init(void)
{
	struct device_node *np;
	struct resource res;

	np = of_find_compatible_node(NULL, NULL, "wrs,sbc8560-brstcr");
	if (np == NULL) {
		printk(KERN_WARNING "sbc8560: No board specific RSTCR in DTB.\n");
		return -ENODEV;
	}

	of_address_to_resource(np, 0, &res);

	printk(KERN_INFO "sbc8560: Found BRSTCR at %pR\n", &res);

	brstcr = ioremap(res.start, resource_size(&res));
	if(!brstcr)
		printk(KERN_WARNING "sbc8560: ioremap of brstcr failed.\n");

	of_node_put(np);

	return 0;
}

arch_initcall(sbc8560_bdrstcr_init);

void sbc8560_rstcr_restart(char * cmd)
{
	local_irq_disable();
	if(brstcr)
		clrbits8(brstcr, 0x80);

	while(1);
}

define_machine(sbc8560) {
	.name			= "SBC8560",
	.probe			= sbc8560_probe,
	.setup_arch		= sbc8560_setup_arch,
	.init_IRQ		= sbc8560_pic_init,
	.show_cpuinfo		= sbc8560_show_cpuinfo,
	.get_irq		= mpic_get_irq,
	.restart		= sbc8560_rstcr_restart,
	.calibrate_decr		= generic_calibrate_decr,
	.progress		= udbg_progress,
};