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 static void __init tx4927_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         return;
  81 }
  82
  83 early_initcall(tx4927_setup);
  84
  85 void __init tx4927_time_init(void)
  86 {
  87
  88 #ifdef CONFIG_TOSHIBA_RBTX4927
  89         {
  90                 extern void toshiba_rbtx4927_time_init(void);
  91                 toshiba_rbtx4927_time_init();
  92         }
  93 #endif
  94
  95         return;
  96 }
  97
  98
  99 void __init tx4927_timer_setup(struct irqaction *irq)
 100 {
 101         u32 count;
 102         u32 c1;
 103         u32 c2;
 104
 105         setup_irq(TX4927_IRQ_CPU_TIMER, irq);
 106
 107         /* to generate the first timer interrupt */
 108         c1 = read_c0_count();
 109         count = c1 + (mips_hpt_frequency / HZ);
 110         write_c0_compare(count);
 111         c2 = read_c0_count();
 112
 113 #ifdef CONFIG_TOSHIBA_RBTX4927
 114         {
 115                 extern void toshiba_rbtx4927_timer_setup(struct irqaction
 116                                                          *irq);
 117                 toshiba_rbtx4927_timer_setup(irq);
 118         }
 119 #endif
 120
 121         return;
 122 }
 123
 124
 125 #ifdef DEBUG
 126 void print_cp0(char *key, int num, char *name, u32 val)
 127 {
 128         printk("%s cp0:%02d:%s=0x%08x\n", key, num, name, val);
 129         return;
 130 }
 131
 132 indent: Standard input:25: Error:Unexpected end of file
 133
 134 void
 135 dump_cp0(char *key)
 136 {
 137         if (key == NULL)
 138                 key = "";
 139
 140         print_cp0(key, 0, "INDEX   ", read_c0_index());
 141         print_cp0(key, 2, "ENTRYLO1", read_c0_entrylo0());
 142         print_cp0(key, 3, "ENTRYLO2", read_c0_entrylo1());
 143         print_cp0(key, 4, "CONTEXT ", read_c0_context());
 144         print_cp0(key, 5, "PAGEMASK", read_c0_pagemask());
 145         print_cp0(key, 6, "WIRED   ", read_c0_wired());
 146         //print_cp0(key, 8, "BADVADDR",  read_c0_badvaddr());
 147         print_cp0(key, 9, "COUNT   ", read_c0_count());
 148         print_cp0(key, 10, "ENTRYHI ", read_c0_entryhi());
 149         print_cp0(key, 11, "COMPARE ", read_c0_compare());
 150         print_cp0(key, 12, "STATUS  ", read_c0_status());
 151         print_cp0(key, 13, "CAUSE   ", read_c0_cause() & 0xffff87ff);
 152         print_cp0(key, 16, "CONFIG  ", read_c0_config());
 153         return;
 154 }
 155
 156 void print_pic(char *key, u32 reg, char *name)
 157 {
 158         printk("%s pic:0x%08x:%s=0x%08x\n", key, reg, name,
 159                TX4927_RD(reg));
 160         return;
 161 }
 162
 163
 164 void dump_pic(char *key)
 165 {
 166         if (key == NULL)
 167                 key = "";
 168
 169         print_pic(key, 0xff1ff600, "IRDEN    ");
 170         print_pic(key, 0xff1ff604, "IRDM0    ");
 171         print_pic(key, 0xff1ff608, "IRDM1    ");
 172
 173         print_pic(key, 0xff1ff610, "IRLVL0   ");
 174         print_pic(key, 0xff1ff614, "IRLVL1   ");
 175         print_pic(key, 0xff1ff618, "IRLVL2   ");
 176         print_pic(key, 0xff1ff61c, "IRLVL3   ");
 177         print_pic(key, 0xff1ff620, "IRLVL4   ");
 178         print_pic(key, 0xff1ff624, "IRLVL5   ");
 179         print_pic(key, 0xff1ff628, "IRLVL6   ");
 180         print_pic(key, 0xff1ff62c, "IRLVL7   ");
 181
 182         print_pic(key, 0xff1ff640, "IRMSK    ");
 183         print_pic(key, 0xff1ff660, "IREDC    ");
 184         print_pic(key, 0xff1ff680, "IRPND    ");
 185         print_pic(key, 0xff1ff6a0, "IRCS     ");
 186
 187         print_pic(key, 0xff1ff514, "IRFLAG1  ");        /* don't read IRLAG0 -- it hangs system */
 188
 189         print_pic(key, 0xff1ff518, "IRPOL    ");
 190         print_pic(key, 0xff1ff51c, "IRRCNT   ");
 191         print_pic(key, 0xff1ff520, "IRMASKINT");
 192         print_pic(key, 0xff1ff524, "IRMASKEXT");
 193
 194         return;
 195 }
 196
 197
 198 void print_addr(char *hdr, char *key, u32 addr)
 199 {
 200         printk("%s %s:0x%08x=0x%08x\n", hdr, key, addr, TX4927_RD(addr));
 201         return;
 202 }
 203
 204
 205 void dump_180(char *key)
 206 {
 207         u32 i;
 208
 209         for (i = 0x80000180; i < 0x80000180 + 0x80; i += 4) {
 210                 print_addr("180", key, i);
 211         }
 212         return;
 213 }
 214
 215
 216 void dump_eh0(char *key)
 217 {
 218         int i;
 219         extern unsigned long exception_handlers[];
 220
 221         for (i = (int) exception_handlers;
 222              i < (int) (exception_handlers + 20); i += 4) {
 223                 print_addr("eh0", key, i);
 224         }
 225
 226         return;
 227 }
 228
 229 void pk0(void)
 230 {
 231         volatile u32 val;
 232
 233         __asm__ __volatile__("ori %0, $26, 0":"=r"(val)
 234             );
 235         printk("k0=[0x%08x]\n", val);
 236 }
 237 #endif