git.oblomov.eu Git - linux-2.6/blob - 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/config.h>
  28 #include <linux/errno.h>
  29 #include <linux/init.h>
  30 #include <linux/kernel_stat.h>
  31 #include <linux/module.h>
  32 #include <linux/signal.h>
  33 #include <linux/sched.h>
  34 #include <linux/types.h>
  35 #include <linux/interrupt.h>
  36 #include <linux/ioport.h>
  37 #include <linux/timex.h>
  38 #include <linux/slab.h>
  39 #include <linux/random.h>
  40 #include <linux/irq.h>
  41 #include <linux/bitops.h>
  42 #include <asm/bootinfo.h>
  43 #include <asm/io.h>
  44 #include <asm/irq.h>
  45 #include <asm/mipsregs.h>
  46 #include <asm/system.h>
  47 #include <asm/time.h>
  48 #include <asm/tx4927/tx4927.h>
  49
  50
  51 #undef DEBUG
  52
  53 void __init tx4927_time_init(void);
  54 void __init tx4927_timer_setup(struct irqaction *irq);
  55 void dump_cp0(char *key);
  56
  57
  58 void (*__wbflush) (void);
  59
  60 static void tx4927_write_buffer_flush(void)
  61 {
  62         __asm__ __volatile__
  63             ("sync\n\t" "nop\n\t" "loop: bc0f loop\n\t" "nop\n\t");
  64 }
  65
  66
  67 void __init plat_setup(void)
  68 {
  69         board_time_init = tx4927_time_init;
  70         board_timer_setup = tx4927_timer_setup;
  71         __wbflush = tx4927_write_buffer_flush;
  72
  73 #ifdef CONFIG_TOSHIBA_RBTX4927
  74         {
  75                 extern void toshiba_rbtx4927_setup(void);
  76                 toshiba_rbtx4927_setup();
  77         }
  78 #endif
  79 }
  80
  81 void __init tx4927_time_init(void)
  82 {
  83
  84 #ifdef CONFIG_TOSHIBA_RBTX4927
  85         {
  86                 extern void toshiba_rbtx4927_time_init(void);
  87                 toshiba_rbtx4927_time_init();
  88         }
  89 #endif
  90
  91         return;
  92 }
  93
  94
  95 void __init tx4927_timer_setup(struct irqaction *irq)
  96 {
  97         u32 count;
  98         u32 c1;
  99         u32 c2;
 100
 101         setup_irq(TX4927_IRQ_CPU_TIMER, irq);
 102
 103         /* to generate the first timer interrupt */
 104         c1 = read_c0_count();
 105         count = c1 + (mips_hpt_frequency / HZ);
 106         write_c0_compare(count);
 107         c2 = read_c0_count();
 108
 109 #ifdef CONFIG_TOSHIBA_RBTX4927
 110         {
 111                 extern void toshiba_rbtx4927_timer_setup(struct irqaction
 112                                                          *irq);
 113                 toshiba_rbtx4927_timer_setup(irq);
 114         }
 115 #endif
 116
 117         return;
 118 }
 119
 120
 121 #ifdef DEBUG
 122 void print_cp0(char *key, int num, char *name, u32 val)
 123 {
 124         printk("%s cp0:%02d:%s=0x%08x\n", key, num, name, val);
 125         return;
 126 }
 127
 128 indent: Standard input:25: Error:Unexpected end of file
 129
 130 void
 131 dump_cp0(char *key)
 132 {
 133         if (key == NULL)
 134                 key = "";
 135
 136         print_cp0(key, 0, "INDEX   ", read_c0_index());
 137         print_cp0(key, 2, "ENTRYLO1", read_c0_entrylo0());
 138         print_cp0(key, 3, "ENTRYLO2", read_c0_entrylo1());
 139         print_cp0(key, 4, "CONTEXT ", read_c0_context());
 140         print_cp0(key, 5, "PAGEMASK", read_c0_pagemask());
 141         print_cp0(key, 6, "WIRED   ", read_c0_wired());
 142         //print_cp0(key, 8, "BADVADDR",  read_c0_badvaddr());
 143         print_cp0(key, 9, "COUNT   ", read_c0_count());
 144         print_cp0(key, 10, "ENTRYHI ", read_c0_entryhi());
 145         print_cp0(key, 11, "COMPARE ", read_c0_compare());
 146         print_cp0(key, 12, "STATUS  ", read_c0_status());
 147         print_cp0(key, 13, "CAUSE   ", read_c0_cause() & 0xffff87ff);
 148         print_cp0(key, 16, "CONFIG  ", read_c0_config());
 149         return;
 150 }
 151
 152 void print_pic(char *key, u32 reg, char *name)
 153 {
 154         printk("%s pic:0x%08x:%s=0x%08x\n", key, reg, name,
 155                TX4927_RD(reg));
 156         return;
 157 }
 158
 159
 160 void dump_pic(char *key)
 161 {
 162         if (key == NULL)
 163                 key = "";
 164
 165         print_pic(key, 0xff1ff600, "IRDEN    ");
 166         print_pic(key, 0xff1ff604, "IRDM0    ");
 167         print_pic(key, 0xff1ff608, "IRDM1    ");
 168
 169         print_pic(key, 0xff1ff610, "IRLVL0   ");
 170         print_pic(key, 0xff1ff614, "IRLVL1   ");
 171         print_pic(key, 0xff1ff618, "IRLVL2   ");
 172         print_pic(key, 0xff1ff61c, "IRLVL3   ");
 173         print_pic(key, 0xff1ff620, "IRLVL4   ");
 174         print_pic(key, 0xff1ff624, "IRLVL5   ");
 175         print_pic(key, 0xff1ff628, "IRLVL6   ");
 176         print_pic(key, 0xff1ff62c, "IRLVL7   ");
 177
 178         print_pic(key, 0xff1ff640, "IRMSK    ");
 179         print_pic(key, 0xff1ff660, "IREDC    ");
 180         print_pic(key, 0xff1ff680, "IRPND    ");
 181         print_pic(key, 0xff1ff6a0, "IRCS     ");
 182
 183         print_pic(key, 0xff1ff514, "IRFLAG1  ");        /* don't read IRLAG0 -- it hangs system */
 184
 185         print_pic(key, 0xff1ff518, "IRPOL    ");
 186         print_pic(key, 0xff1ff51c, "IRRCNT   ");
 187         print_pic(key, 0xff1ff520, "IRMASKINT");
 188         print_pic(key, 0xff1ff524, "IRMASKEXT");
 189
 190         return;
 191 }
 192
 193
 194 void print_addr(char *hdr, char *key, u32 addr)
 195 {
 196         printk("%s %s:0x%08x=0x%08x\n", hdr, key, addr, TX4927_RD(addr));
 197         return;
 198 }
 199
 200
 201 void dump_180(char *key)
 202 {
 203         u32 i;
 204
 205         for (i = 0x80000180; i < 0x80000180 + 0x80; i += 4) {
 206                 print_addr("180", key, i);
 207         }
 208         return;
 209 }
 210
 211
 212 void dump_eh0(char *key)
 213 {
 214         int i;
 215         extern unsigned long exception_handlers[];
 216
 217         for (i = (int) exception_handlers;
 218              i < (int) (exception_handlers + 20); i += 4) {
 219                 print_addr("eh0", key, i);
 220         }
 221
 222         return;
 223 }
 224
 225 void pk0(void)
 226 {
 227         volatile u32 val;
 228
 229         __asm__ __volatile__("ori %0, $26, 0":"=r"(val)
 230             );
 231         printk("k0=[0x%08x]\n", val);
 232 }
 233 #endif