LXR linux-old/arch/mips/ddb5xxx/ddb5074/setup.c

   1/*
   2 *  arch/mips/ddb5074/setup.c -- NEC DDB Vrc-5074 setup routines
   3 *
   4 *  Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
   5 *                     Sony Software Development Center Europe (SDCE), Brussels
   6 */
   7#include <linux/config.h>
   8#include <linux/init.h>
   9#include <linux/kbd_ll.h>
  10#include <linux/kernel.h>
  11#include <linux/kdev_t.h>
  12#include <linux/types.h>
  13#include <linux/console.h>
  14#include <linux/sched.h>
  15#include <linux/mc146818rtc.h>
  16#include <linux/pc_keyb.h>
  17#include <linux/pci.h>
  18#include <linux/ide.h>
  19#include <linux/ioport.h>
  20#include <linux/irq.h>
  21
  22#include <asm/addrspace.h>
  23#include <asm/bcache.h>
  24#include <asm/keyboard.h>
  25#include <asm/irq.h>
  26#include <asm/reboot.h>
  27#include <asm/gdb-stub.h>
  28#include <asm/time.h>
  29#include <asm/nile4.h>
  30#include <asm/ddb5xxx/ddb5074.h>
  31#include <asm/ddb5xxx/ddb5xxx.h>
  32
  33
  34#ifdef CONFIG_KGDB
  35extern void rs_kgdb_hook(int);
  36extern void breakpoint(void);
  37#endif
  38
  39extern struct ide_ops std_ide_ops;
  40extern struct kbd_ops std_kbd_ops;
  41extern struct rtc_ops ddb_rtc_ops;
  42
  43static void (*back_to_prom) (void) = (void (*)(void)) 0xbfc00000;
  44
  45static void ddb_machine_restart(char *command)
  46{
  47        u32 t;
  48
  49        /* PCI cold reset */
  50        t = nile4_in32(NILE4_PCICTRL + 4);
  51        t |= 0x40000000;
  52        nile4_out32(NILE4_PCICTRL + 4, t);
  53        /* CPU cold reset */
  54        t = nile4_in32(NILE4_CPUSTAT);
  55        t |= 1;
  56        nile4_out32(NILE4_CPUSTAT, t);
  57        /* Call the PROM */
  58        back_to_prom();
  59}
  60
  61static void ddb_machine_halt(void)
  62{
  63        printk("DDB Vrc-5074 halted.\n");
  64        do {
  65        } while (1);
  66}
  67
  68static void ddb_machine_power_off(void)
  69{
  70        printk("DDB Vrc-5074 halted. Please turn off the power.\n");
  71        do {
  72        } while (1);
  73}
  74
  75extern void ddb_irq_setup(void);
  76extern void rtc_ds1386_init(unsigned long base);
  77
  78extern void (*board_timer_setup) (struct irqaction * irq);
  79
  80static void __init ddb_timer_init(struct irqaction *irq)
  81{
  82        /* set the clock to 1 Hz */
  83        nile4_out32(NILE4_T2CTRL, 1000000);
  84        /* enable the General-Purpose Timer */
  85        nile4_out32(NILE4_T2CTRL + 4, 0x00000001);
  86        /* reset timer */
  87        nile4_out32(NILE4_T2CNTR, 0);
  88        /* enable interrupt */
  89        setup_irq(nile4_to_irq(NILE4_INT_GPT), irq);
  90        nile4_enable_irq(nile4_to_irq(NILE4_INT_GPT));
  91        change_c0_status(ST0_IM,
  92                          IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4);
  93
  94}
  95
  96static void __init ddb_time_init(void)
  97{
  98    /* we have ds1396 RTC chip */
  99        rtc_ds1386_init(KSEG1ADDR(DDB_PCI_MEM_BASE));
 100}
 101
 102
 103
 104void __init ddb_setup(void)
 105{
 106        extern int panic_timeout;
 107
 108        irq_setup = ddb_irq_setup;
 109        set_io_port_base(NILE4_PCI_IO_BASE);
 110        isa_slot_offset = NILE4_PCI_MEM_BASE;
 111        board_timer_setup = ddb_timer_init;
 112        board_time_init = ddb_time_init;
 113
 114
 115        _machine_restart = ddb_machine_restart;
 116        _machine_halt = ddb_machine_halt;
 117        _machine_power_off = ddb_machine_power_off;
 118
 119#ifdef CONFIG_BLK_DEV_IDE
 120        ide_ops = &std_ide_ops;
 121#endif
 122
 123#ifdef CONFIG_PC_KEYB
 124    kbd_ops = &std_kbd_ops;
 125#endif
 126
 127        rtc_ops = &ddb_rtc_ops;
 128
 129    ddb_out32(DDB_BAR0, 0);
 130
 131        ddb_set_pmr(DDB_PCIINIT0, DDB_PCICMD_IO, 0, 0x10);
 132        ddb_set_pmr(DDB_PCIINIT1, DDB_PCICMD_MEM, DDB_PCI_MEM_BASE , 0x10);
 133
 134#ifdef CONFIG_FB
 135    conswitchp = &dummy_con;
 136#endif
 137
 138        /* Reboot on panic */
 139        panic_timeout = 180;
 140}
 141
 142
 143#define USE_NILE4_SERIAL        0
 144
 145#if USE_NILE4_SERIAL
 146#define ns16550_in(reg)         nile4_in8((reg)*8)
 147#define ns16550_out(reg, val)   nile4_out8((reg)*8, (val))
 148#else
 149#define NS16550_BASE            (NILE4_PCI_IO_BASE+0x03f8)
 150static inline u8 ns16550_in(u32 reg)
 151{
 152        return *(volatile u8 *) (NS16550_BASE + reg);
 153}
 154
 155static inline void ns16550_out(u32 reg, u8 val)
 156{
 157        *(volatile u8 *) (NS16550_BASE + reg) = val;
 158}
 159#endif
 160
 161#define NS16550_RBR             0
 162#define NS16550_THR             0
 163#define NS16550_DLL             0
 164#define NS16550_IER             1
 165#define NS16550_DLM             1
 166#define NS16550_FCR             2
 167#define NS16550_IIR             2
 168#define NS16550_LCR             3
 169#define NS16550_MCR             4
 170#define NS16550_LSR             5
 171#define NS16550_MSR             6
 172#define NS16550_SCR             7
 173
 174#define NS16550_LSR_DR          0x01    /* Data ready */
 175#define NS16550_LSR_OE          0x02    /* Overrun */
 176#define NS16550_LSR_PE          0x04    /* Parity error */
 177#define NS16550_LSR_FE          0x08    /* Framing error */
 178#define NS16550_LSR_BI          0x10    /* Break */
 179#define NS16550_LSR_THRE        0x20    /* Xmit holding register empty */
 180#define NS16550_LSR_TEMT        0x40    /* Xmitter empty */
 181#define NS16550_LSR_ERR         0x80    /* Error */
 182
 183
 184void _serinit(void)
 185{
 186#if USE_NILE4_SERIAL
 187        ns16550_out(NS16550_LCR, 0x80);
 188        ns16550_out(NS16550_DLM, 0x00);
 189        ns16550_out(NS16550_DLL, 0x36); /* 9600 baud */
 190        ns16550_out(NS16550_LCR, 0x00);
 191        ns16550_out(NS16550_LCR, 0x03);
 192        ns16550_out(NS16550_FCR, 0x47);
 193#else
 194        /* done by PMON */
 195#endif
 196}
 197
 198void _putc(char c)
 199{
 200        while (!(ns16550_in(NS16550_LSR) & NS16550_LSR_THRE));
 201        ns16550_out(NS16550_THR, c);
 202        if (c == '\n') {
 203                while (!(ns16550_in(NS16550_LSR) & NS16550_LSR_THRE));
 204                ns16550_out(NS16550_THR, '\r');
 205        }
 206}
 207
 208void _puts(const char *s)
 209{
 210        char c;
 211        while ((c = *s++))
 212                _putc(c);
 213}
 214
 215char _getc(void)
 216{
 217        while (!(ns16550_in(NS16550_LSR) & NS16550_LSR_DR));
 218        return ns16550_in(NS16550_RBR);
 219}
 220
 221int _testc(void)
 222{
 223        return (ns16550_in(NS16550_LSR) & NS16550_LSR_DR) != 0;
 224}
 225
 226
 227/*
 228 *  Hexadecimal 7-segment LED
 229 */
 230void ddb5074_led_hex(int hex)
 231{
 232        outb(hex, 0x80);
 233}
 234
 235
 236/*
 237 *  LEDs D2 and D3, connected to the GPIO pins of the PMU in the ALi M1543
 238 */
 239struct pci_dev *pci_pmu = NULL;
 240
 241void ddb5074_led_d2(int on)
 242{
 243        u8 t;
 244
 245        if (pci_pmu) {
 246                pci_read_config_byte(pci_pmu, 0x7e, &t);
 247                if (on)
 248                        t &= 0x7f;
 249                else
 250                        t |= 0x80;
 251                pci_write_config_byte(pci_pmu, 0x7e, t);
 252        }
 253}
 254
 255void ddb5074_led_d3(int on)
 256{
 257        u8 t;
 258
 259        if (pci_pmu) {
 260                pci_read_config_byte(pci_pmu, 0x7e, &t);
 261                if (on)
 262                        t &= 0xbf;
 263                else
 264                        t |= 0x40;
 265                pci_write_config_byte(pci_pmu, 0x7e, t);
 266        }
 267}
 268