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1da177e4 LT |
1 | /* |
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> | |
b187f180 | 42 | #include <linux/serial_8250.h> |
1da177e4 LT |
43 | |
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> | |
1da177e4 LT |
50 | #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 | ||
57 | unsigned char titan_ge_mac_addr_base[6] = { | |
58 | // 0x00, 0x03, 0xcc, 0x1d, 0x22, 0x00 | |
59 | 0x00, 0xe0, 0x04, 0x00, 0x00, 0x21 | |
60 | }; | |
61 | ||
348c913f | 62 | unsigned long cpu_clock_freq; |
1da177e4 LT |
63 | unsigned long yosemite_base; |
64 | ||
65 | static struct m48t37_rtc *m48t37_base; | |
66 | ||
67 | void __init bus_error_init(void) | |
68 | { | |
69 | /* Do nothing */ | |
70 | } | |
71 | ||
72 | ||
d4f587c6 | 73 | void read_persistent_clock(struct timespec *ts) |
1da177e4 LT |
74 | { |
75 | unsigned int year, month, day, hour, min, sec; | |
53c2df2f | 76 | unsigned long flags; |
1da177e4 | 77 | |
53c2df2f | 78 | spin_lock_irqsave(&rtc_lock, flags); |
1da177e4 LT |
79 | /* Stop the update to the time */ |
80 | m48t37_base->control = 0x40; | |
81 | ||
02112dbc AB |
82 | year = bcd2bin(m48t37_base->year); |
83 | year += bcd2bin(m48t37_base->century) * 100; | |
1da177e4 | 84 | |
02112dbc AB |
85 | 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); | |
1da177e4 LT |
90 | |
91 | /* Start the update to the time again */ | |
92 | m48t37_base->control = 0x00; | |
53c2df2f | 93 | spin_unlock_irqrestore(&rtc_lock, flags); |
1da177e4 | 94 | |
d4f587c6 MS |
95 | ts->tv_sec = mktime(year, month, day, hour, min, sec); |
96 | ts->tv_nsec = 0; | |
1da177e4 LT |
97 | } |
98 | ||
4b550488 | 99 | int rtc_mips_set_time(unsigned long tim) |
1da177e4 LT |
100 | { |
101 | struct rtc_time tm; | |
53c2df2f | 102 | unsigned long flags; |
1da177e4 | 103 | |
90b02340 RB |
104 | /* |
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; | |
1da177e4 LT |
110 | tm.tm_mon += 1; |
111 | ||
53c2df2f | 112 | spin_lock_irqsave(&rtc_lock, flags); |
1da177e4 LT |
113 | /* enable writing */ |
114 | m48t37_base->control = 0x80; | |
115 | ||
116 | /* year */ | |
02112dbc AB |
117 | m48t37_base->year = bin2bcd(tm.tm_year % 100); |
118 | m48t37_base->century = bin2bcd(tm.tm_year / 100); | |
1da177e4 LT |
119 | |
120 | /* month */ | |
02112dbc | 121 | m48t37_base->month = bin2bcd(tm.tm_mon); |
1da177e4 LT |
122 | |
123 | /* day */ | |
02112dbc | 124 | m48t37_base->date = bin2bcd(tm.tm_mday); |
1da177e4 LT |
125 | |
126 | /* hour/min/sec */ | |
02112dbc AB |
127 | m48t37_base->hour = bin2bcd(tm.tm_hour); |
128 | m48t37_base->min = bin2bcd(tm.tm_min); | |
129 | m48t37_base->sec = bin2bcd(tm.tm_sec); | |
1da177e4 LT |
130 | |
131 | /* day of week -- not really used, but let's keep it up-to-date */ | |
02112dbc | 132 | m48t37_base->day = bin2bcd(tm.tm_wday + 1); |
1da177e4 LT |
133 | |
134 | /* disable writing */ | |
135 | m48t37_base->control = 0x00; | |
53c2df2f | 136 | spin_unlock_irqrestore(&rtc_lock, flags); |
1da177e4 LT |
137 | |
138 | return 0; | |
139 | } | |
140 | ||
4b550488 | 141 | void __init plat_time_init(void) |
1da177e4 | 142 | { |
348c913f | 143 | mips_hpt_frequency = cpu_clock_freq / 2; |
1da177e4 LT |
144 | mips_hpt_frequency = 33000000 * 3 * 5; |
145 | } | |
146 | ||
1da177e4 LT |
147 | unsigned long ocd_base; |
148 | ||
149 | EXPORT_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 | ||
160 | static 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 | ||
170 | static void __init py_uart_setup(void) | |
171 | { | |
811d9449 | 172 | #ifdef CONFIG_SERIAL_8250 |
1da177e4 LT |
173 | 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; | |
59a675b2 | 185 | up.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; |
1da177e4 LT |
186 | up.line = 0; |
187 | ||
188 | if (early_serial_setup(&up)) | |
189 | printk(KERN_ERR "Early serial init of port 0 failed\n"); | |
811d9449 | 190 | #endif /* CONFIG_SERIAL_8250 */ |
1da177e4 LT |
191 | } |
192 | ||
193 | static 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"); | |
1da177e4 LT |
198 | } |
199 | ||
200 | /* Not only time init but that's what the hook it's called through is named */ | |
201 | static void __init py_late_time_init(void) | |
202 | { | |
203 | py_map_ocd(); | |
204 | py_uart_setup(); | |
205 | py_rtc_setup(); | |
206 | } | |
207 | ||
2925aba4 | 208 | void __init plat_mem_setup(void) |
1da177e4 | 209 | { |
1da177e4 LT |
210 | 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 | |
1da177e4 | 223 | } |