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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> | |
42 | ||
43 | #include <asm/time.h> | |
44 | #include <asm/bootinfo.h> | |
45 | #include <asm/page.h> | |
46 | #include <asm/io.h> | |
47 | #include <asm/irq.h> | |
48 | #include <asm/processor.h> | |
49 | #include <asm/ptrace.h> | |
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 | ||
62 | unsigned long cpu_clock; | |
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 | ||
73 | unsigned long m48t37y_get_time(void) | |
74 | { | |
75 | unsigned int year, month, day, hour, min, sec; | |
76 | ||
77 | /* Stop the update to the time */ | |
78 | m48t37_base->control = 0x40; | |
79 | ||
80 | year = BCD2BIN(m48t37_base->year); | |
81 | year += BCD2BIN(m48t37_base->century) * 100; | |
82 | ||
83 | month = BCD2BIN(m48t37_base->month); | |
84 | day = BCD2BIN(m48t37_base->date); | |
85 | hour = BCD2BIN(m48t37_base->hour); | |
86 | min = BCD2BIN(m48t37_base->min); | |
87 | sec = BCD2BIN(m48t37_base->sec); | |
88 | ||
89 | /* Start the update to the time again */ | |
90 | m48t37_base->control = 0x00; | |
91 | ||
92 | return mktime(year, month, day, hour, min, sec); | |
93 | } | |
94 | ||
95 | int m48t37y_set_time(unsigned long sec) | |
96 | { | |
97 | struct rtc_time tm; | |
98 | ||
99 | /* convert to a more useful format -- note months count from 0 */ | |
100 | to_tm(sec, &tm); | |
101 | tm.tm_mon += 1; | |
102 | ||
103 | /* enable writing */ | |
104 | m48t37_base->control = 0x80; | |
105 | ||
106 | /* year */ | |
107 | m48t37_base->year = BIN2BCD(tm.tm_year % 100); | |
108 | m48t37_base->century = BIN2BCD(tm.tm_year / 100); | |
109 | ||
110 | /* month */ | |
111 | m48t37_base->month = BIN2BCD(tm.tm_mon); | |
112 | ||
113 | /* day */ | |
114 | m48t37_base->date = BIN2BCD(tm.tm_mday); | |
115 | ||
116 | /* hour/min/sec */ | |
117 | m48t37_base->hour = BIN2BCD(tm.tm_hour); | |
118 | m48t37_base->min = BIN2BCD(tm.tm_min); | |
119 | m48t37_base->sec = BIN2BCD(tm.tm_sec); | |
120 | ||
121 | /* day of week -- not really used, but let's keep it up-to-date */ | |
122 | m48t37_base->day = BIN2BCD(tm.tm_wday + 1); | |
123 | ||
124 | /* disable writing */ | |
125 | m48t37_base->control = 0x00; | |
126 | ||
127 | return 0; | |
128 | } | |
129 | ||
130 | void yosemite_timer_setup(struct irqaction *irq) | |
131 | { | |
132 | setup_irq(7, irq); | |
133 | } | |
134 | ||
135 | void yosemite_time_init(void) | |
136 | { | |
137 | board_timer_setup = yosemite_timer_setup; | |
138 | mips_hpt_frequency = cpu_clock / 2; | |
139 | mips_hpt_frequency = 33000000 * 3 * 5; | |
140 | } | |
141 | ||
142 | /* No other usable initialization hook than this ... */ | |
143 | extern void (*late_time_init)(void); | |
144 | ||
145 | unsigned long ocd_base; | |
146 | ||
147 | EXPORT_SYMBOL(ocd_base); | |
148 | ||
149 | /* | |
150 | * Common setup before any secondaries are started | |
151 | */ | |
152 | ||
153 | #define TITAN_UART_CLK 3686400 | |
154 | #define TITAN_SERIAL_BASE_BAUD (TITAN_UART_CLK / 16) | |
155 | #define TITAN_SERIAL_IRQ 4 | |
156 | #define TITAN_SERIAL_BASE 0xfd000008UL | |
157 | ||
158 | static void __init py_map_ocd(void) | |
159 | { | |
160 | ocd_base = (unsigned long) ioremap(OCD_BASE, OCD_SIZE); | |
161 | if (!ocd_base) | |
162 | panic("Mapping OCD failed - game over. Your score is 0."); | |
163 | ||
164 | /* Kludge for PMON bug ... */ | |
165 | OCD_WRITE(0x0710, 0x0ffff029); | |
166 | } | |
167 | ||
168 | static void __init py_uart_setup(void) | |
169 | { | |
170 | struct uart_port up; | |
171 | ||
172 | /* | |
173 | * Register to interrupt zero because we share the interrupt with | |
174 | * the serial driver which we don't properly support yet. | |
175 | */ | |
176 | memset(&up, 0, sizeof(up)); | |
177 | up.membase = (unsigned char *) ioremap(TITAN_SERIAL_BASE, 8); | |
178 | up.irq = TITAN_SERIAL_IRQ; | |
179 | up.uartclk = TITAN_UART_CLK; | |
180 | up.regshift = 0; | |
181 | up.iotype = UPIO_MEM; | |
182 | up.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST; | |
183 | up.line = 0; | |
184 | ||
185 | if (early_serial_setup(&up)) | |
186 | printk(KERN_ERR "Early serial init of port 0 failed\n"); | |
187 | } | |
188 | ||
189 | static void __init py_rtc_setup(void) | |
190 | { | |
191 | m48t37_base = ioremap(YOSEMITE_RTC_BASE, YOSEMITE_RTC_SIZE); | |
192 | if (!m48t37_base) | |
193 | printk(KERN_ERR "Mapping the RTC failed\n"); | |
194 | ||
195 | rtc_get_time = m48t37y_get_time; | |
196 | rtc_set_time = m48t37y_set_time; | |
197 | ||
198 | write_seqlock(&xtime_lock); | |
199 | xtime.tv_sec = m48t37y_get_time(); | |
200 | xtime.tv_nsec = 0; | |
201 | ||
202 | set_normalized_timespec(&wall_to_monotonic, | |
203 | -xtime.tv_sec, -xtime.tv_nsec); | |
204 | write_sequnlock(&xtime_lock); | |
205 | } | |
206 | ||
207 | /* Not only time init but that's what the hook it's called through is named */ | |
208 | static void __init py_late_time_init(void) | |
209 | { | |
210 | py_map_ocd(); | |
211 | py_uart_setup(); | |
212 | py_rtc_setup(); | |
213 | } | |
214 | ||
c83cfc9c | 215 | void __init plat_setup(void) |
1da177e4 LT |
216 | { |
217 | board_time_init = yosemite_time_init; | |
218 | late_time_init = py_late_time_init; | |
219 | ||
220 | /* Add memory regions */ | |
221 | add_memory_region(0x00000000, 0x10000000, BOOT_MEM_RAM); | |
222 | ||
223 | #if 0 /* XXX Crash ... */ | |
224 | OCD_WRITE(RM9000x2_OCD_HTSC, | |
225 | OCD_READ(RM9000x2_OCD_HTSC) | HYPERTRANSPORT_ENABLE); | |
226 | ||
227 | /* Set the BAR. Shifted mode */ | |
228 | OCD_WRITE(RM9000x2_OCD_HTBAR0, HYPERTRANSPORT_BAR0_ADDR); | |
229 | OCD_WRITE(RM9000x2_OCD_HTMASK0, HYPERTRANSPORT_SIZE0); | |
230 | #endif | |
1da177e4 | 231 | } |