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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Copyright (C) 2003 PMC-Sierra Inc.
3 * Author: Manish Lachwani (lachwani@pmc-sierra.com)
4 *
5 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
13 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
15 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
18 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
19 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 *
23 * You should have received a copy of the GNU General Public License along
24 * with this program; if not, write to the Free Software Foundation, Inc.,
25 * 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27#include <linux/bcd.h>
28#include <linux/init.h>
29#include <linux/kernel.h>
30#include <linux/types.h>
31#include <linux/mm.h>
32#include <linux/bootmem.h>
33#include <linux/swap.h>
34#include <linux/ioport.h>
35#include <linux/sched.h>
36#include <linux/interrupt.h>
37#include <linux/timex.h>
38#include <linux/termios.h>
39#include <linux/tty.h>
40#include <linux/serial.h>
41#include <linux/serial_core.h>
Yinghai Lub187f182007-07-18 00:49:10 -070042#include <linux/serial_8250.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
44#include <asm/time.h>
45#include <asm/bootinfo.h>
46#include <asm/page.h>
47#include <asm/io.h>
48#include <asm/irq.h>
49#include <asm/processor.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070050#include <asm/reboot.h>
51#include <asm/serial.h>
52#include <asm/titan_dep.h>
53#include <asm/m48t37.h>
54
55#include "setup.h"
56
57unsigned char titan_ge_mac_addr_base[6] = {
58 // 0x00, 0x03, 0xcc, 0x1d, 0x22, 0x00
59 0x00, 0xe0, 0x04, 0x00, 0x00, 0x21
60};
61
Ralf Baechle348c9132007-07-28 11:46:15 +010062unsigned long cpu_clock_freq;
Linus Torvalds1da177e2005-04-16 15:20:36 -070063unsigned long yosemite_base;
64
65static struct m48t37_rtc *m48t37_base;
66
67void __init bus_error_init(void)
68{
69 /* Do nothing */
70}
71
72
Martin Schwidefskyd4f587c2009-08-14 15:47:31 +020073void read_persistent_clock(struct timespec *ts)
Linus Torvalds1da177e2005-04-16 15:20:36 -070074{
75 unsigned int year, month, day, hour, min, sec;
Atsushi Nemoto53c2df22005-11-03 01:01:15 +090076 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
Atsushi Nemoto53c2df22005-11-03 01:01:15 +090078 spin_lock_irqsave(&rtc_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 /* Stop the update to the time */
80 m48t37_base->control = 0x40;
81
Adrian Bunk02112db2008-10-18 20:28:44 -070082 year = bcd2bin(m48t37_base->year);
83 year += bcd2bin(m48t37_base->century) * 100;
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
Adrian Bunk02112db2008-10-18 20:28:44 -070085 month = bcd2bin(m48t37_base->month);
86 day = bcd2bin(m48t37_base->date);
87 hour = bcd2bin(m48t37_base->hour);
88 min = bcd2bin(m48t37_base->min);
89 sec = bcd2bin(m48t37_base->sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
91 /* Start the update to the time again */
92 m48t37_base->control = 0x00;
Atsushi Nemoto53c2df22005-11-03 01:01:15 +090093 spin_unlock_irqrestore(&rtc_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
Martin Schwidefskyd4f587c2009-08-14 15:47:31 +020095 ts->tv_sec = mktime(year, month, day, hour, min, sec);
96 ts->tv_nsec = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070097}
98
Ralf Baechle4b550482007-10-11 23:46:08 +010099int rtc_mips_set_time(unsigned long tim)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100{
101 struct rtc_time tm;
Atsushi Nemoto53c2df22005-11-03 01:01:15 +0900102 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
Ralf Baechle90b02342007-10-11 23:46:09 +0100104 /*
105 * Convert to a more useful format -- note months count from 0
106 * and years from 1900
107 */
108 rtc_time_to_tm(tim, &tm);
109 tm.tm_year += 1900;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 tm.tm_mon += 1;
111
Atsushi Nemoto53c2df22005-11-03 01:01:15 +0900112 spin_lock_irqsave(&rtc_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 /* enable writing */
114 m48t37_base->control = 0x80;
115
116 /* year */
Adrian Bunk02112db2008-10-18 20:28:44 -0700117 m48t37_base->year = bin2bcd(tm.tm_year % 100);
118 m48t37_base->century = bin2bcd(tm.tm_year / 100);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
120 /* month */
Adrian Bunk02112db2008-10-18 20:28:44 -0700121 m48t37_base->month = bin2bcd(tm.tm_mon);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
123 /* day */
Adrian Bunk02112db2008-10-18 20:28:44 -0700124 m48t37_base->date = bin2bcd(tm.tm_mday);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125
126 /* hour/min/sec */
Adrian Bunk02112db2008-10-18 20:28:44 -0700127 m48t37_base->hour = bin2bcd(tm.tm_hour);
128 m48t37_base->min = bin2bcd(tm.tm_min);
129 m48t37_base->sec = bin2bcd(tm.tm_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
131 /* day of week -- not really used, but let's keep it up-to-date */
Adrian Bunk02112db2008-10-18 20:28:44 -0700132 m48t37_base->day = bin2bcd(tm.tm_wday + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
134 /* disable writing */
135 m48t37_base->control = 0x00;
Atsushi Nemoto53c2df22005-11-03 01:01:15 +0900136 spin_unlock_irqrestore(&rtc_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
138 return 0;
139}
140
Ralf Baechle4b550482007-10-11 23:46:08 +0100141void __init plat_time_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142{
Ralf Baechle348c9132007-07-28 11:46:15 +0100143 mips_hpt_frequency = cpu_clock_freq / 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144mips_hpt_frequency = 33000000 * 3 * 5;
145}
146
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147unsigned long ocd_base;
148
149EXPORT_SYMBOL(ocd_base);
150
151/*
152 * Common setup before any secondaries are started
153 */
154
155#define TITAN_UART_CLK 3686400
156#define TITAN_SERIAL_BASE_BAUD (TITAN_UART_CLK / 16)
157#define TITAN_SERIAL_IRQ 4
158#define TITAN_SERIAL_BASE 0xfd000008UL
159
160static void __init py_map_ocd(void)
161{
162 ocd_base = (unsigned long) ioremap(OCD_BASE, OCD_SIZE);
163 if (!ocd_base)
164 panic("Mapping OCD failed - game over. Your score is 0.");
165
166 /* Kludge for PMON bug ... */
167 OCD_WRITE(0x0710, 0x0ffff029);
168}
169
170static void __init py_uart_setup(void)
171{
Mathieu Desnoyers811d9442007-02-03 23:16:51 -0500172#ifdef CONFIG_SERIAL_8250
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 struct uart_port up;
174
175 /*
176 * Register to interrupt zero because we share the interrupt with
177 * the serial driver which we don't properly support yet.
178 */
179 memset(&up, 0, sizeof(up));
180 up.membase = (unsigned char *) ioremap(TITAN_SERIAL_BASE, 8);
181 up.irq = TITAN_SERIAL_IRQ;
182 up.uartclk = TITAN_UART_CLK;
183 up.regshift = 0;
184 up.iotype = UPIO_MEM;
Russell King59a675b2006-02-05 10:52:29 +0000185 up.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 up.line = 0;
187
188 if (early_serial_setup(&up))
189 printk(KERN_ERR "Early serial init of port 0 failed\n");
Mathieu Desnoyers811d9442007-02-03 23:16:51 -0500190#endif /* CONFIG_SERIAL_8250 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191}
192
193static void __init py_rtc_setup(void)
194{
195 m48t37_base = ioremap(YOSEMITE_RTC_BASE, YOSEMITE_RTC_SIZE);
196 if (!m48t37_base)
197 printk(KERN_ERR "Mapping the RTC failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198}
199
200/* Not only time init but that's what the hook it's called through is named */
201static void __init py_late_time_init(void)
202{
203 py_map_ocd();
204 py_uart_setup();
205 py_rtc_setup();
206}
207
Ralf Baechle2925aba2006-06-18 01:32:22 +0100208void __init plat_mem_setup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 late_time_init = py_late_time_init;
211
212 /* Add memory regions */
213 add_memory_region(0x00000000, 0x10000000, BOOT_MEM_RAM);
214
215#if 0 /* XXX Crash ... */
216 OCD_WRITE(RM9000x2_OCD_HTSC,
217 OCD_READ(RM9000x2_OCD_HTSC) | HYPERTRANSPORT_ENABLE);
218
219 /* Set the BAR. Shifted mode */
220 OCD_WRITE(RM9000x2_OCD_HTBAR0, HYPERTRANSPORT_BAR0_ADDR);
221 OCD_WRITE(RM9000x2_OCD_HTMASK0, HYPERTRANSPORT_SIZE0);
222#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223}