arch/mips/lasat/setup.c

   1 /*
   2  * Carsten Langgaard, carstenl@mips.com
   3  * Copyright (C) 1999 MIPS Technologies, Inc.  All rights reserved.
   4  *
   5  * Thomas Horsten <thh@lasat.com>
   6  * Copyright (C) 2000 LASAT Networks A/S.
   7  *
   8  * Brian Murphy <brian@murphy.dk>
   9  *
  10  *  This program is free software; you can distribute it and/or modify it
  11  *  under the terms of the GNU General Public License (Version 2) as
  12  *  published by the Free Software Foundation.
  13  *
  14  *  This program is distributed in the hope it will be useful, but WITHOUT
  15  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17  *  for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License along
  20  *  with this program; if not, write to the Free Software Foundation, Inc.,
  21  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Lasat specific setup.
  24  */
  25 #include <linux/config.h>
  26 #include <linux/init.h>
  27 #include <linux/sched.h>
  28 #include <linux/pci.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/tty.h>
  31 #include <linux/serial.h>
  32 #include <linux/serial_core.h>
  33
  34 #include <asm/time.h>
  35 #include <asm/cpu.h>
  36 #include <asm/bootinfo.h>
  37 #include <asm/irq.h>
  38 #include <asm/serial.h>
  39 #include <asm/lasat/lasat.h>
  40 #include <asm/lasat/serial.h>
  41
  42 #ifdef CONFIG_PICVUE
  43 #include <linux/notifier.h>
  44 #endif
  45
  46 #include "ds1603.h"
  47 #include <asm/lasat/ds1603.h>
  48 #include <asm/lasat/picvue.h>
  49 #include <asm/lasat/eeprom.h>
  50
  51 #include "prom.h"
  52
  53 int lasat_command_line = 0;
  54 void lasatint_init(void);
  55
  56 extern void lasat_reboot_setup(void);
  57 extern void pcisetup(void);
  58 extern void edhac_init(void *, void *, void *);
  59 extern void addrflt_init(void);
  60
  61 struct lasat_misc lasat_misc_info[N_MACHTYPES] = {
  62         {(void *)KSEG1ADDR(0x1c840000), (void *)KSEG1ADDR(0x1c800000), 2},
  63         {(void *)KSEG1ADDR(0x11080000), (void *)KSEG1ADDR(0x11000000), 6}
  64 };
  65
  66 struct lasat_misc *lasat_misc = NULL;
  67
  68 #ifdef CONFIG_DS1603
  69 static struct ds_defs ds_defs[N_MACHTYPES] = {
  70         { (void *)DS1603_REG_100, (void *)DS1603_REG_100,
  71                 DS1603_RST_100, DS1603_CLK_100, DS1603_DATA_100,
  72                 DS1603_DATA_SHIFT_100, 0, 0 },
  73         { (void *)DS1603_REG_200, (void *)DS1603_DATA_REG_200,
  74                 DS1603_RST_200, DS1603_CLK_200, DS1603_DATA_200,
  75                 DS1603_DATA_READ_SHIFT_200, 1, 2000 }
  76 };
  77 #endif
  78
  79 #ifdef CONFIG_PICVUE
  80 #include "picvue.h"
  81 static struct pvc_defs pvc_defs[N_MACHTYPES] = {
  82         { (void *)PVC_REG_100, PVC_DATA_SHIFT_100, PVC_DATA_M_100,
  83                 PVC_E_100, PVC_RW_100, PVC_RS_100 },
  84         { (void *)PVC_REG_200, PVC_DATA_SHIFT_200, PVC_DATA_M_200,
  85                 PVC_E_200, PVC_RW_200, PVC_RS_200 }
  86 };
  87 #endif
  88
  89 static int lasat_panic_display(struct notifier_block *this,
  90                              unsigned long event, void *ptr)
  91 {
  92 #ifdef CONFIG_PICVUE
  93         unsigned char *string = ptr;
  94         if (string == NULL)
  95                 string = "Kernel Panic";
  96         pvc_dump_string(string);
  97 #endif
  98         return NOTIFY_DONE;
  99 }
 100
 101 static int lasat_panic_prom_monitor(struct notifier_block *this,
 102                              unsigned long event, void *ptr)
 103 {
 104         prom_monitor();
 105         return NOTIFY_DONE;
 106 }
 107
 108 static struct notifier_block lasat_panic_block[] =
 109 {
 110         { lasat_panic_display, NULL, INT_MAX },
 111         { lasat_panic_prom_monitor, NULL, INT_MIN }
 112 };
 113
 114 static void lasat_time_init(void)
 115 {
 116         mips_hpt_frequency = lasat_board_info.li_cpu_hz / 2;
 117 }
 118
 119 static void lasat_timer_setup(struct irqaction *irq)
 120 {
 121
 122         write_c0_compare(
 123                 read_c0_count() +
 124                 mips_hpt_frequency / HZ);
 125         change_c0_status(ST0_IM, IE_IRQ0 | IE_IRQ5);
 126 }
 127
 128 #define DYNAMIC_SERIAL_INIT
 129 #ifdef DYNAMIC_SERIAL_INIT
 130 void __init serial_init(void)
 131 {
 132 #ifdef CONFIG_SERIAL_8250
 133         struct uart_port s;
 134
 135         memset(&s, 0, sizeof(s));
 136
 137         s.flags = STD_COM_FLAGS;
 138         s.iotype = SERIAL_IO_MEM;
 139
 140         if (mips_machtype == MACH_LASAT_100) {
 141                 s.uartclk = LASAT_BASE_BAUD_100 * 16;
 142                 s.irq = LASATINT_UART_100;
 143                 s.regshift = LASAT_UART_REGS_SHIFT_100;
 144                 s.membase = (char *)KSEG1ADDR(LASAT_UART_REGS_BASE_100);
 145         } else {
 146                 s.uartclk = LASAT_BASE_BAUD_200 * 16;
 147                 s.irq = LASATINT_UART_200;
 148                 s.regshift = LASAT_UART_REGS_SHIFT_200;
 149                 s.membase = (char *)KSEG1ADDR(LASAT_UART_REGS_BASE_200);
 150         }
 151
 152         if (early_serial_setup(&s) != 0)
 153                 printk(KERN_ERR "Serial setup failed!\n");
 154 #endif
 155 }
 156 #endif
 157
 158 static int __init lasat_setup(void)
 159 {
 160         int i;
 161         lasat_misc  = &lasat_misc_info[mips_machtype];
 162 #ifdef CONFIG_PICVUE
 163         picvue = &pvc_defs[mips_machtype];
 164 #endif
 165
 166         /* Set up panic notifier */
 167         for (i = 0; i < sizeof(lasat_panic_block) / sizeof(struct notifier_block); i++)
 168                 notifier_chain_register(&panic_notifier_list, &lasat_panic_block[i]);
 169
 170         lasat_reboot_setup();
 171
 172         board_time_init = lasat_time_init;
 173         board_timer_setup = lasat_timer_setup;
 174
 175 #ifdef CONFIG_DS1603
 176         ds1603 = &ds_defs[mips_machtype];
 177         rtc_get_time = ds1603_read;
 178         rtc_set_time = ds1603_set;
 179 #endif
 180
 181 #ifdef DYNAMIC_SERIAL_INIT
 182         serial_init();
 183 #endif
 184         /* Switch from prom exception handler to normal mode */
 185         change_c0_status(ST0_BEV,0);
 186
 187         prom_printf("Lasat specific initialization complete\n");
 188
 189         return 0;
 190 }
 191
 192 early_initcall(lasat_setup);