summaryrefslogtreecommitdiff
path: root/arch/mips/pmc-sierra/yosemite/setup.c
blob: 855977ca51cd3d5e05fd09bec366a40ce687a89b (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
/*
 *  Copyright (C) 2003 PMC-Sierra Inc.
 *  Author: Manish Lachwani (lachwani@pmc-sierra.com)
 *
 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
 *
 *  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.
 *
 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include <linux/bcd.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <linux/swap.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/timex.h>
#include <linux/termios.h>
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>

#include <asm/time.h>
#include <asm/bootinfo.h>
#include <asm/page.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/processor.h>
#include <asm/reboot.h>
#include <asm/serial.h>
#include <asm/titan_dep.h>
#include <asm/m48t37.h>

#include "setup.h"

unsigned char titan_ge_mac_addr_base[6] = {
	// 0x00, 0x03, 0xcc, 0x1d, 0x22, 0x00
	0x00, 0xe0, 0x04, 0x00, 0x00, 0x21
};

unsigned long cpu_clock_freq;
unsigned long yosemite_base;

static struct m48t37_rtc *m48t37_base;

void __init bus_error_init(void)
{
	/* Do nothing */
}


unsigned long read_persistent_clock(void)
{
	unsigned int year, month, day, hour, min, sec;
	unsigned long flags;

	spin_lock_irqsave(&rtc_lock, flags);
	/* Stop the update to the time */
	m48t37_base->control = 0x40;

	year = BCD2BIN(m48t37_base->year);
	year += BCD2BIN(m48t37_base->century) * 100;

	month = BCD2BIN(m48t37_base->month);
	day = BCD2BIN(m48t37_base->date);
	hour = BCD2BIN(m48t37_base->hour);
	min = BCD2BIN(m48t37_base->min);
	sec = BCD2BIN(m48t37_base->sec);

	/* Start the update to the time again */
	m48t37_base->control = 0x00;
	spin_unlock_irqrestore(&rtc_lock, flags);

	return mktime(year, month, day, hour, min, sec);
}

int rtc_mips_set_time(unsigned long tim)
{
	struct rtc_time tm;
	unsigned long flags;

	/*
	 * Convert to a more useful format -- note months count from 0
	 * and years from 1900
	 */
	rtc_time_to_tm(tim, &tm);
	tm.tm_year += 1900;
	tm.tm_mon += 1;

	spin_lock_irqsave(&rtc_lock, flags);
	/* enable writing */
	m48t37_base->control = 0x80;

	/* year */
	m48t37_base->year = BIN2BCD(tm.tm_year % 100);
	m48t37_base->century = BIN2BCD(tm.tm_year / 100);

	/* month */
	m48t37_base->month = BIN2BCD(tm.tm_mon);

	/* day */
	m48t37_base->date = BIN2BCD(tm.tm_mday);

	/* hour/min/sec */
	m48t37_base->hour = BIN2BCD(tm.tm_hour);
	m48t37_base->min = BIN2BCD(tm.tm_min);
	m48t37_base->sec = BIN2BCD(tm.tm_sec);

	/* day of week -- not really used, but let's keep it up-to-date */
	m48t37_base->day = BIN2BCD(tm.tm_wday + 1);

	/* disable writing */
	m48t37_base->control = 0x00;
	spin_unlock_irqrestore(&rtc_lock, flags);

	return 0;
}

void __init plat_time_init(void)
{
	mips_hpt_frequency = cpu_clock_freq / 2;
mips_hpt_frequency = 33000000 * 3 * 5;
}

/* No other usable initialization hook than this ...  */
extern void (*late_time_init)(void);

unsigned long ocd_base;

EXPORT_SYMBOL(ocd_base);

/*
 * Common setup before any secondaries are started
 */

#define TITAN_UART_CLK		3686400
#define TITAN_SERIAL_BASE_BAUD	(TITAN_UART_CLK / 16)
#define TITAN_SERIAL_IRQ	4
#define TITAN_SERIAL_BASE	0xfd000008UL

static void __init py_map_ocd(void)
{
	ocd_base = (unsigned long) ioremap(OCD_BASE, OCD_SIZE);
	if (!ocd_base)
		panic("Mapping OCD failed - game over.  Your score is 0.");

	/* Kludge for PMON bug ... */
	OCD_WRITE(0x0710, 0x0ffff029);
}

static void __init py_uart_setup(void)
{
#ifdef CONFIG_SERIAL_8250
	struct uart_port up;

	/*
	 * Register to interrupt zero because we share the interrupt with
	 * the serial driver which we don't properly support yet.
	 */
	memset(&up, 0, sizeof(up));
	up.membase      = (unsigned char *) ioremap(TITAN_SERIAL_BASE, 8);
	up.irq          = TITAN_SERIAL_IRQ;
	up.uartclk      = TITAN_UART_CLK;
	up.regshift     = 0;
	up.iotype       = UPIO_MEM;
	up.flags        = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
	up.line         = 0;

	if (early_serial_setup(&up))
		printk(KERN_ERR "Early serial init of port 0 failed\n");
#endif /* CONFIG_SERIAL_8250 */
}

static void __init py_rtc_setup(void)
{
	m48t37_base = ioremap(YOSEMITE_RTC_BASE, YOSEMITE_RTC_SIZE);
	if (!m48t37_base)
		printk(KERN_ERR "Mapping the RTC failed\n");
}

/* Not only time init but that's what the hook it's called through is named */
static void __init py_late_time_init(void)
{
	py_map_ocd();
	py_uart_setup();
	py_rtc_setup();
}

void __init plat_mem_setup(void)
{
	late_time_init = py_late_time_init;

	/* Add memory regions */
	add_memory_region(0x00000000, 0x10000000, BOOT_MEM_RAM);

#if 0 /* XXX Crash ...  */
	OCD_WRITE(RM9000x2_OCD_HTSC,
	          OCD_READ(RM9000x2_OCD_HTSC) | HYPERTRANSPORT_ENABLE);

	/* Set the BAR. Shifted mode */
	OCD_WRITE(RM9000x2_OCD_HTBAR0, HYPERTRANSPORT_BAR0_ADDR);
	OCD_WRITE(RM9000x2_OCD_HTMASK0, HYPERTRANSPORT_SIZE0);
#endif
}