arch/mips/lasat/setup.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Carsten Langgaard, carstenl@mips.com
   4  * Copyright (C) 1999 MIPS Technologies, Inc.  All rights reserved.
   5  *
   6  * Thomas Horsten <thh@lasat.com>
   7  * Copyright (C) 2000 LASAT Networks A/S.
   8  *
   9  * Brian Murphy <brian@murphy.dk>
  10  *
  11  * Lasat specific setup.
  12  */
  13 #include <linux/init.h>
  14 #include <linux/sched.h>
  15 #include <linux/pci.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/tty.h>
  18
  19 #include <asm/time.h>
  20 #include <asm/cpu.h>
  21 #include <asm/bootinfo.h>
  22 #include <asm/irq.h>
  23 #include <asm/lasat/lasat.h>
  24 #include <asm/lasat/serial.h>
  25
  26 #ifdef CONFIG_PICVUE
  27 #include <linux/notifier.h>
  28 #endif
  29
  30 #include "ds1603.h"
  31 #include <asm/lasat/ds1603.h>
  32 #include <asm/lasat/picvue.h>
  33 #include <asm/lasat/eeprom.h>
  34
  35 #include "prom.h"
  36
  37 int lasat_command_line;
  38 void lasatint_init(void);
  39
  40 extern void lasat_reboot_setup(void);
  41 extern void pcisetup(void);
  42 extern void edhac_init(void *, void *, void *);
  43 extern void addrflt_init(void);
  44
  45 struct lasat_misc lasat_misc_info[N_MACHTYPES] = {
  46         {
  47                 .reset_reg      = (void *)KSEG1ADDR(0x1c840000),
  48                 .flash_wp_reg   = (void *)KSEG1ADDR(0x1c800000), 2
  49         }, {
  50                 .reset_reg      = (void *)KSEG1ADDR(0x11080000),
  51                 .flash_wp_reg   = (void *)KSEG1ADDR(0x11000000), 6
  52         }
  53 };
  54
  55 struct lasat_misc *lasat_misc;
  56
  57 #ifdef CONFIG_DS1603
  58 static struct ds_defs ds_defs[N_MACHTYPES] = {
  59         { (void *)DS1603_REG_100, (void *)DS1603_REG_100,
  60                 DS1603_RST_100, DS1603_CLK_100, DS1603_DATA_100,
  61                 DS1603_DATA_SHIFT_100, 0, 0 },
  62         { (void *)DS1603_REG_200, (void *)DS1603_DATA_REG_200,
  63                 DS1603_RST_200, DS1603_CLK_200, DS1603_DATA_200,
  64                 DS1603_DATA_READ_SHIFT_200, 1, 2000 }
  65 };
  66 #endif
  67
  68 #ifdef CONFIG_PICVUE
  69 #include "picvue.h"
  70 static struct pvc_defs pvc_defs[N_MACHTYPES] = {
  71         { (void *)PVC_REG_100, PVC_DATA_SHIFT_100, PVC_DATA_M_100,
  72                 PVC_E_100, PVC_RW_100, PVC_RS_100 },
  73         { (void *)PVC_REG_200, PVC_DATA_SHIFT_200, PVC_DATA_M_200,
  74                 PVC_E_200, PVC_RW_200, PVC_RS_200 }
  75 };
  76 #endif
  77
  78 static int lasat_panic_display(struct notifier_block *this,
  79                              unsigned long event, void *ptr)
  80 {
  81 #ifdef CONFIG_PICVUE
  82         unsigned char *string = ptr;
  83         if (string == NULL)
  84                 string = "Kernel Panic";
  85         pvc_dump_string(string);
  86 #endif
  87         return NOTIFY_DONE;
  88 }
  89
  90 static int lasat_panic_prom_monitor(struct notifier_block *this,
  91                              unsigned long event, void *ptr)
  92 {
  93         prom_monitor();
  94         return NOTIFY_DONE;
  95 }
  96
  97 static struct notifier_block lasat_panic_block[] =
  98 {
  99         {
 100                 .notifier_call  = lasat_panic_display,
 101                 .priority       = INT_MAX
 102         }, {
 103                 .notifier_call  = lasat_panic_prom_monitor,
 104                 .priority       = INT_MIN
 105         }
 106 };
 107
 108 void __init plat_time_init(void)
 109 {
 110         mips_hpt_frequency = lasat_board_info.li_cpu_hz / 2;
 111
 112         change_c0_status(ST0_IM, IE_IRQ0);
 113 }
 114
 115 void __init plat_mem_setup(void)
 116 {
 117         int i;
 118         int lasat_type = IS_LASAT_200() ? 1 : 0;
 119
 120         lasat_misc  = &lasat_misc_info[lasat_type];
 121 #ifdef CONFIG_PICVUE
 122         picvue = &pvc_defs[lasat_type];
 123 #endif
 124
 125         /* Set up panic notifier */
 126         for (i = 0; i < ARRAY_SIZE(lasat_panic_block); i++)
 127                 atomic_notifier_chain_register(&panic_notifier_list,
 128                                 &lasat_panic_block[i]);
 129
 130         lasat_reboot_setup();
 131
 132 #ifdef CONFIG_DS1603
 133         ds1603 = &ds_defs[lasat_type];
 134 #endif
 135
 136 #ifdef DYNAMIC_SERIAL_INIT
 137         serial_init();
 138 #endif
 139
 140         pr_info("Lasat specific initialization complete\n");
 141 }