Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
[linux-2.6] / arch / mips / tx4927 / common / tx4927_setup.c
1 /*
2  * Author: MontaVista Software, Inc.
3  *         source@mvista.com
4  *
5  * Copyright 2001-2002 MontaVista Software Inc.
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.
15  *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
17  *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
18  *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
19  *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
20  *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
21  *  USE OF 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/errno.h>
28 #include <linux/init.h>
29 #include <linux/kernel_stat.h>
30 #include <linux/module.h>
31 #include <linux/signal.h>
32 #include <linux/sched.h>
33 #include <linux/types.h>
34 #include <linux/interrupt.h>
35 #include <linux/ioport.h>
36 #include <linux/timex.h>
37 #include <linux/slab.h>
38 #include <linux/random.h>
39 #include <linux/irq.h>
40 #include <linux/bitops.h>
41 #include <asm/bootinfo.h>
42 #include <asm/io.h>
43 #include <asm/irq.h>
44 #include <asm/mipsregs.h>
45 #include <asm/system.h>
46 #include <asm/time.h>
47 #include <asm/tx4927/tx4927.h>
48
49
50 #undef DEBUG
51
52 void __init tx4927_time_init(void);
53 void dump_cp0(char *key);
54
55
56 void (*__wbflush) (void);
57
58 static void tx4927_write_buffer_flush(void)
59 {
60         __asm__ __volatile__
61             ("sync\n\t" "nop\n\t" "loop: bc0f loop\n\t" "nop\n\t");
62 }
63
64
65 void __init plat_mem_setup(void)
66 {
67         board_time_init = tx4927_time_init;
68         __wbflush = tx4927_write_buffer_flush;
69
70 #ifdef CONFIG_TOSHIBA_RBTX4927
71         {
72                 extern void toshiba_rbtx4927_setup(void);
73                 toshiba_rbtx4927_setup();
74         }
75 #endif
76 }
77
78 void __init tx4927_time_init(void)
79 {
80
81 #ifdef CONFIG_TOSHIBA_RBTX4927
82         {
83                 extern void toshiba_rbtx4927_time_init(void);
84                 toshiba_rbtx4927_time_init();
85         }
86 #endif
87
88         return;
89 }
90
91
92 void __init plat_timer_setup(struct irqaction *irq)
93 {
94         u32 count;
95         u32 c1;
96         u32 c2;
97
98         setup_irq(TX4927_IRQ_CPU_TIMER, irq);
99
100         /* to generate the first timer interrupt */
101         c1 = read_c0_count();
102         count = c1 + (mips_hpt_frequency / HZ);
103         write_c0_compare(count);
104         c2 = read_c0_count();
105
106 #ifdef CONFIG_TOSHIBA_RBTX4927
107         {
108                 extern void toshiba_rbtx4927_timer_setup(struct irqaction
109                                                          *irq);
110                 toshiba_rbtx4927_timer_setup(irq);
111         }
112 #endif
113
114         return;
115 }
116
117
118 #ifdef DEBUG
119 void print_cp0(char *key, int num, char *name, u32 val)
120 {
121         printk("%s cp0:%02d:%s=0x%08x\n", key, num, name, val);
122         return;
123 }
124
125 indent: Standard input:25: Error:Unexpected end of file
126
127 void
128 dump_cp0(char *key)
129 {
130         if (key == NULL)
131                 key = "";
132
133         print_cp0(key, 0, "INDEX   ", read_c0_index());
134         print_cp0(key, 2, "ENTRYLO1", read_c0_entrylo0());
135         print_cp0(key, 3, "ENTRYLO2", read_c0_entrylo1());
136         print_cp0(key, 4, "CONTEXT ", read_c0_context());
137         print_cp0(key, 5, "PAGEMASK", read_c0_pagemask());
138         print_cp0(key, 6, "WIRED   ", read_c0_wired());
139         //print_cp0(key, 8, "BADVADDR",  read_c0_badvaddr());
140         print_cp0(key, 9, "COUNT   ", read_c0_count());
141         print_cp0(key, 10, "ENTRYHI ", read_c0_entryhi());
142         print_cp0(key, 11, "COMPARE ", read_c0_compare());
143         print_cp0(key, 12, "STATUS  ", read_c0_status());
144         print_cp0(key, 13, "CAUSE   ", read_c0_cause() & 0xffff87ff);
145         print_cp0(key, 16, "CONFIG  ", read_c0_config());
146         return;
147 }
148
149 void print_pic(char *key, u32 reg, char *name)
150 {
151         printk("%s pic:0x%08x:%s=0x%08x\n", key, reg, name,
152                TX4927_RD(reg));
153         return;
154 }
155
156
157 void dump_pic(char *key)
158 {
159         if (key == NULL)
160                 key = "";
161
162         print_pic(key, 0xff1ff600, "IRDEN    ");
163         print_pic(key, 0xff1ff604, "IRDM0    ");
164         print_pic(key, 0xff1ff608, "IRDM1    ");
165
166         print_pic(key, 0xff1ff610, "IRLVL0   ");
167         print_pic(key, 0xff1ff614, "IRLVL1   ");
168         print_pic(key, 0xff1ff618, "IRLVL2   ");
169         print_pic(key, 0xff1ff61c, "IRLVL3   ");
170         print_pic(key, 0xff1ff620, "IRLVL4   ");
171         print_pic(key, 0xff1ff624, "IRLVL5   ");
172         print_pic(key, 0xff1ff628, "IRLVL6   ");
173         print_pic(key, 0xff1ff62c, "IRLVL7   ");
174
175         print_pic(key, 0xff1ff640, "IRMSK    ");
176         print_pic(key, 0xff1ff660, "IREDC    ");
177         print_pic(key, 0xff1ff680, "IRPND    ");
178         print_pic(key, 0xff1ff6a0, "IRCS     ");
179
180         print_pic(key, 0xff1ff514, "IRFLAG1  ");        /* don't read IRLAG0 -- it hangs system */
181
182         print_pic(key, 0xff1ff518, "IRPOL    ");
183         print_pic(key, 0xff1ff51c, "IRRCNT   ");
184         print_pic(key, 0xff1ff520, "IRMASKINT");
185         print_pic(key, 0xff1ff524, "IRMASKEXT");
186
187         return;
188 }
189
190
191 void print_addr(char *hdr, char *key, u32 addr)
192 {
193         printk("%s %s:0x%08x=0x%08x\n", hdr, key, addr, TX4927_RD(addr));
194         return;
195 }
196
197
198 void dump_180(char *key)
199 {
200         u32 i;
201
202         for (i = 0x80000180; i < 0x80000180 + 0x80; i += 4) {
203                 print_addr("180", key, i);
204         }
205         return;
206 }
207
208
209 void dump_eh0(char *key)
210 {
211         int i;
212         extern unsigned long exception_handlers[];
213
214         for (i = (int) exception_handlers;
215              i < (int) (exception_handlers + 20); i += 4) {
216                 print_addr("eh0", key, i);
217         }
218
219         return;
220 }
221
222 void pk0(void)
223 {
224         volatile u32 val;
225
226         __asm__ __volatile__("ori %0, $26, 0":"=r"(val)
227             );
228         printk("k0=[0x%08x]\n", val);
229 }
230 #endif