text: /*
   *  linux/arch/m68k/amiga/config.c
   *
   *  Copyright (C) 1993 Hamish Macdonald
   *
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file COPYING in the main directory of this archive
   * for more details.
   */
  
  /*
   * Miscellaneous Amiga stuff
   */
  
  #include <linux/types.h>
  #include <linux/kernel.h>
  #include <linux/mm.h>
  #include <linux/tty.h>
  #include <linux/console.h>
  #include <linux/rtc.h>
  #include <linux/init.h>
  #include <linux/vt_kern.h>
  #include <linux/delay.h>
  #include <linux/interrupt.h>
  #include <linux/zorro.h>
  
  #include <asm/bootinfo.h>
  #include <asm/setup.h>
  #include <asm/system.h>
  #include <asm/pgtable.h>
  #include <asm/amigahw.h>
  #include <asm/amigaints.h>
  #include <asm/irq.h>
  #include <asm/rtc.h>
  #include <asm/machdep.h>
  #include <asm/io.h>
  
  unsigned long amiga_model;
  unsigned long amiga_eclock;
  unsigned long amiga_masterclock;
  unsigned long amiga_colorclock;
  unsigned long amiga_chipset;
  unsigned char amiga_vblank;
  unsigned char amiga_psfreq;
  struct amiga_hw_present amiga_hw_present;
  
  static char s_a500[] __initdata = "A500";
  static char s_a500p[] __initdata = "A500+";
  static char s_a600[] __initdata = "A600";
  static char s_a1000[] __initdata = "A1000";
  static char s_a1200[] __initdata = "A1200";
  static char s_a2000[] __initdata = "A2000";
  static char s_a2500[] __initdata = "A2500";
  static char s_a3000[] __initdata = "A3000";
  static char s_a3000t[] __initdata = "A3000T";
  static char s_a3000p[] __initdata = "A3000+";
  static char s_a4000[] __initdata = "A4000";
  static char s_a4000t[] __initdata = "A4000T";
  static char s_cdtv[] __initdata = "CDTV";
  static char s_cd32[] __initdata = "CD32";
  static char s_draco[] __initdata = "Draco";
  static char *amiga_models[] __initdata = {
  	[AMI_500-AMI_500]	= s_a500,
  	[AMI_500PLUS-AMI_500]	= s_a500p,
  	[AMI_600-AMI_500]	= s_a600,
  	[AMI_1000-AMI_500]	= s_a1000,
  	[AMI_1200-AMI_500]	= s_a1200,
  	[AMI_2000-AMI_500]	= s_a2000,
  	[AMI_2500-AMI_500]	= s_a2500,
  	[AMI_3000-AMI_500]	= s_a3000,
  	[AMI_3000T-AMI_500]	= s_a3000t,
  	[AMI_3000PLUS-AMI_500]	= s_a3000p,
  	[AMI_4000-AMI_500]	= s_a4000,
  	[AMI_4000T-AMI_500]	= s_a4000t,
  	[AMI_CDTV-AMI_500]	= s_cdtv,
  	[AMI_CD32-AMI_500]	= s_cd32,
  	[AMI_DRACO-AMI_500]	= s_draco,
  };
  
  static char amiga_model_name[13] = "Amiga ";
  
  static void amiga_sched_init(irq_handler_t handler);
  /* amiga specific irq functions */
  extern void amiga_init_IRQ(void);
  static void amiga_get_model(char *model);
  static int amiga_get_hardware_list(char *buffer);
  /* amiga specific timer functions */
  static unsigned long amiga_gettimeoffset(void);
  static int a3000_hwclk(int, struct rtc_time *);
  static int a2000_hwclk(int, struct rtc_time *);
  static int amiga_set_clock_mmss(unsigned long);
  static unsigned int amiga_get_ss(void);
  extern void amiga_mksound(unsigned int count, unsigned int ticks);
  static void amiga_reset(void);
  extern void amiga_init_sound(void);
  static void amiga_mem_console_write(struct console *co, const char *b,
  				    unsigned int count);
  void amiga_serial_console_write(struct console *co, const char *s,
  				unsigned int count);
  #ifdef CONFIG_HEARTBEAT
  static void amiga_heartbeat(int on);
  #endif
  
  static struct console amiga_console_driver = {
  	.name	= "debug",
  	.flags	= CON_PRINTBUFFER,
  	.index	= -1,
  };
  
  
      /*
       *  Motherboard Resources present in all Amiga models
       */
  
  static struct {
  	struct resource _ciab, _ciaa, _custom, _kickstart;
  } mb_resources = {
  	._ciab = {
  		.name = "CIA B", .start = 0x00bfd000, .end = 0x00bfdfff
  	},
  	._ciaa = {
  		.name = "CIA A", .start = 0x00bfe000, .end = 0x00bfefff
  	},
  	._custom = {
  		.name = "Custom I/O", .start = 0x00dff000, .end = 0x00dfffff
  	},
  	._kickstart = {
  		.name = "Kickstart ROM", .start = 0x00f80000, .end = 0x00ffffff
  	}
  };
  
  static struct resource rtc_resource = {
  	.start = 0x00dc0000, .end = 0x00dcffff
  };
  
  static struct resource ram_resource[NUM_MEMINFO];
  
  
      /*
       *  Parse an Amiga-specific record in the bootinfo
       */
  
  int amiga_parse_bootinfo(const struct bi_record *record)
  {
  	int unknown = 0;
  	const unsigned long *data = record->data;
  
  	switch (record->tag) {
  	case BI_AMIGA_MODEL:
  		amiga_model = *data;
  		break;
  
  	case BI_AMIGA_ECLOCK:
  		amiga_eclock = *data;
  		break;
  
  	case BI_AMIGA_CHIPSET:
  		amiga_chipset = *data;
  		break;
  
  	case BI_AMIGA_CHIP_SIZE:
  		amiga_chip_size = *(const int *)data;
  		break;
  
  	case BI_AMIGA_VBLANK:
  		amiga_vblank = *(const unsigned char *)data;
  		break;
  
  	case BI_AMIGA_PSFREQ:
  		amiga_psfreq = *(const unsigned char *)data;
  		break;
  
  	case BI_AMIGA_AUTOCON:
  #ifdef CONFIG_ZORRO
  		if (zorro_num_autocon < ZORRO_NUM_AUTO) {
  			const struct ConfigDev *cd = (struct ConfigDev *)data;
  			struct zorro_dev *dev = &zorro_autocon[zorro_num_autocon++];
  			dev->rom = cd->cd_Rom;
  			dev->slotaddr = cd->cd_SlotAddr;
  			dev->slotsize = cd->cd_SlotSize;
  			dev->resource.start = (unsigned long)cd->cd_BoardAddr;
  			dev->resource.end = dev->resource.start + cd->cd_BoardSize - 1;
  		} else
  			printk("amiga_parse_bootinfo: too many AutoConfig devices\n");
  #endif /* CONFIG_ZORRO */
  		break;
  
  	case BI_AMIGA_SERPER:
  		/* serial port period: ignored here */
  		break;
  
  	default:
  		unknown = 1;
  	}
  	return unknown;
  }
  
      /*
       *  Identify builtin hardware
       */
  
  static void __init amiga_identify(void)
  {
  	/* Fill in some default values, if necessary */
  	if (amiga_eclock == 0)
  		amiga_eclock = 709379;
  
  	memset(&amiga_hw_present, 0, sizeof(amiga_hw_present));
  
  	printk("Amiga hardware found: ");
  	if (amiga_model >= AMI_500 && amiga_model <= AMI_DRACO) {
  		printk("[%s] ", amiga_models[amiga_model-AMI_500]);
  		strcat(amiga_model_name, amiga_models[amiga_model-AMI_500]);
  	}
  
  	switch (amiga_model) {
  	case AMI_UNKNOWN:
  		goto Generic;
  
  	case AMI_600:
  	case AMI_1200:
  		AMIGAHW_SET(A1200_IDE);
  		AMIGAHW_SET(PCMCIA);
  	case AMI_500:
  	case AMI_500PLUS:
  	case AMI_1000:
  	case AMI_2000:
  	case AMI_2500:
  		AMIGAHW_SET(A2000_CLK);	/* Is this correct for all models? */
  		goto Generic;
  
  	case AMI_3000:
  	case AMI_3000T:
  		AMIGAHW_SET(AMBER_FF);
  		AMIGAHW_SET(MAGIC_REKICK);
  		/* fall through */
  	case AMI_3000PLUS:
  		AMIGAHW_SET(A3000_SCSI);
  		AMIGAHW_SET(A3000_CLK);
  		AMIGAHW_SET(ZORRO3);
  		goto Generic;
  
  	case AMI_4000T:
  		AMIGAHW_SET(A4000_SCSI);
  		/* fall through */
  	case AMI_4000:
  		AMIGAHW_SET(A4000_IDE);
  		AMIGAHW_SET(A3000_CLK);
  		AMIGAHW_SET(ZORRO3);
  		goto Generic;
  
  	case AMI_CDTV:
  	case AMI_CD32:
  		AMIGAHW_SET(CD_ROM);
  		AMIGAHW_SET(A2000_CLK);             /* Is this correct? */
  		goto Generic;
  
  	Generic:
  		AMIGAHW_SET(AMI_VIDEO);
  		AMIGAHW_SET(AMI_BLITTER);
  		AMIGAHW_SET(AMI_AUDIO);
  		AMIGAHW_SET(AMI_FLOPPY);
  		AMIGAHW_SET(AMI_KEYBOARD);
  		AMIGAHW_SET(AMI_MOUSE);
  		AMIGAHW_SET(AMI_SERIAL);
  		AMIGAHW_SET(AMI_PARALLEL);
  		AMIGAHW_SET(CHIP_RAM);
  		AMIGAHW_SET(PAULA);
  
  		switch (amiga_chipset) {
  		case CS_OCS:
  		case CS_ECS:
  		case CS_AGA:
  			switch (amiga_custom.deniseid & 0xf) {
  			case 0x0c:
  				AMIGAHW_SET(DENISE_HR);
  				break;
  			case 0x08:
  				AMIGAHW_SET(LISA);
  				break;
  			}
  			break;
  		default:
  			AMIGAHW_SET(DENISE);
  			break;
  		}
  		switch ((amiga_custom.vposr>>8) & 0x7f) {
  		case 0x00:
  			AMIGAHW_SET(AGNUS_PAL);
  			break;
  		case 0x10:
  			AMIGAHW_SET(AGNUS_NTSC);
  			break;
  		case 0x20:
  		case 0x21:
  			AMIGAHW_SET(AGNUS_HR_PAL);
  			break;
  		case 0x30:
  		case 0x31:
  			AMIGAHW_SET(AGNUS_HR_NTSC);
  			break;
  		case 0x22:
  		case 0x23:
  			AMIGAHW_SET(ALICE_PAL);
  			break;
  		case 0x32:
  		case 0x33:
  			AMIGAHW_SET(ALICE_NTSC);
  			break;
  		}
  		AMIGAHW_SET(ZORRO);
  		break;
  
  	case AMI_DRACO:
  		panic("No support for Draco yet");
  
  	default:
  		panic("Unknown Amiga Model");
  	}
  
  #define AMIGAHW_ANNOUNCE(name, str)		\
  	if (AMIGAHW_PRESENT(name))		\
  		printk(str)
  
  	AMIGAHW_ANNOUNCE(AMI_VIDEO, "VIDEO ");
  	AMIGAHW_ANNOUNCE(AMI_BLITTER, "BLITTER ");
  	AMIGAHW_ANNOUNCE(AMBER_FF, "AMBER_FF ");
  	AMIGAHW_ANNOUNCE(AMI_AUDIO, "AUDIO ");
  	AMIGAHW_ANNOUNCE(AMI_FLOPPY, "FLOPPY ");
  	AMIGAHW_ANNOUNCE(A3000_SCSI, "A3000_SCSI ");
  	AMIGAHW_ANNOUNCE(A4000_SCSI, "A4000_SCSI ");
  	AMIGAHW_ANNOUNCE(A1200_IDE, "A1200_IDE ");
  	AMIGAHW_ANNOUNCE(A4000_IDE, "A4000_IDE ");
  	AMIGAHW_ANNOUNCE(CD_ROM, "CD_ROM ");
  	AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "KEYBOARD ");
  	AMIGAHW_ANNOUNCE(AMI_MOUSE, "MOUSE ");
  	AMIGAHW_ANNOUNCE(AMI_SERIAL, "SERIAL ");
  	AMIGAHW_ANNOUNCE(AMI_PARALLEL, "PARALLEL ");
  	AMIGAHW_ANNOUNCE(A2000_CLK, "A2000_CLK ");
  	AMIGAHW_ANNOUNCE(A3000_CLK, "A3000_CLK ");
  	AMIGAHW_ANNOUNCE(CHIP_RAM, "CHIP_RAM ");
  	AMIGAHW_ANNOUNCE(PAULA, "PAULA ");
  	AMIGAHW_ANNOUNCE(DENISE, "DENISE ");
  	AMIGAHW_ANNOUNCE(DENISE_HR, "DENISE_HR ");
  	AMIGAHW_ANNOUNCE(LISA, "LISA ");
  	AMIGAHW_ANNOUNCE(AGNUS_PAL, "AGNUS_PAL ");
  	AMIGAHW_ANNOUNCE(AGNUS_NTSC, "AGNUS_NTSC ");
  	AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "AGNUS_HR_PAL ");
  	AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "AGNUS_HR_NTSC ");
  	AMIGAHW_ANNOUNCE(ALICE_PAL, "ALICE_PAL ");
  	AMIGAHW_ANNOUNCE(ALICE_NTSC, "ALICE_NTSC ");
  	AMIGAHW_ANNOUNCE(MAGIC_REKICK, "MAGIC_REKICK ");
  	AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA ");
  	if (AMIGAHW_PRESENT(ZORRO))
  		printk("ZORRO%s ", AMIGAHW_PRESENT(ZORRO3) ? "3" : "");
  	printk("\n");
  
  #undef AMIGAHW_ANNOUNCE
  }
  
      /*
       *  Setup the Amiga configuration info
       */
  
  void __init config_amiga(void)
  {
  	int i;
  
  	amiga_identify();
  
  	/* Yuk, we don't have PCI memory */
  	iomem_resource.name = "Memory";
  	for (i = 0; i < 4; i++)
  		request_resource(&iomem_resource, &((struct resource *)&mb_resources)[i]);
  
  	mach_sched_init      = amiga_sched_init;
  	mach_init_IRQ        = amiga_init_IRQ;
  	mach_get_model       = amiga_get_model;
  	mach_get_hardware_list = amiga_get_hardware_list;
  	mach_gettimeoffset   = amiga_gettimeoffset;
  	if (AMIGAHW_PRESENT(A3000_CLK)) {
  		mach_hwclk         = a3000_hwclk;
  		rtc_resource.name = "A3000 RTC";
  		request_resource(&iomem_resource, &rtc_resource);
  	} else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
  		mach_hwclk         = a2000_hwclk;
  		rtc_resource.name = "A2000 RTC";
  		request_resource(&iomem_resource, &rtc_resource);
  	}
  
  	/*
  	 * default MAX_DMA=0xffffffff on all machines. If we don't do so, the SCSI
  	 * code will not be able to allocate any mem for transfers, unless we are
  	 * dealing with a Z2 mem only system.                  /Jes
  	 */
  	mach_max_dma_address = 0xffffffff;
  
  	mach_set_clock_mmss  = amiga_set_clock_mmss;
  	mach_get_ss          = amiga_get_ss;
  	mach_reset           = amiga_reset;
  #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
  	mach_beep            = amiga_mksound;
  #endif
  
  #ifdef CONFIG_HEARTBEAT
  	mach_heartbeat = amiga_heartbeat;
  #endif
  
  	/* Fill in the clock values (based on the 700 kHz E-Clock) */
  	amiga_masterclock = 40*amiga_eclock;	/* 28 MHz */
  	amiga_colorclock = 5*amiga_eclock;	/* 3.5 MHz */
  
  	/* clear all DMA bits */
  	amiga_custom.dmacon = DMAF_ALL;
  	/* ensure that the DMA master bit is set */
  	amiga_custom.dmacon = DMAF_SETCLR | DMAF_MASTER;
  
  	/* don't use Z2 RAM as system memory on Z3 capable machines */
  	if (AMIGAHW_PRESENT(ZORRO3)) {
  		int i, j;
  		u32 disabled_z2mem = 0;
  
  		for (i = 0; i < m68k_num_memory; i++) {
  			if (m68k_memory[i].addr < 16*1024*1024) {
  				if (i == 0) {
  					/* don't cut off the branch we're sitting on */
  					printk("Warning: kernel runs in Zorro II memory\n");
  					continue;
  				}
  				disabled_z2mem += m68k_memory[i].size;
  				m68k_num_memory--;
  				for (j = i; j < m68k_num_memory; j++)
  					m68k_memory[j] = m68k_memory[j+1];
  				i--;
  			}
  		}
  		if (disabled_z2mem)
  		printk("%dK of Zorro II memory will not be used as system memory\n",
  		disabled_z2mem>>10);
  	}
  
  	/* request all RAM */
  	for (i = 0; i < m68k_num_memory; i++) {
  		ram_resource[i].name =
  			(m68k_memory[i].addr >= 0x01000000) ? "32-bit Fast RAM" :
  			(m68k_memory[i].addr < 0x00c00000) ? "16-bit Fast RAM" :
  			"16-bit Slow RAM";
  		ram_resource[i].start = m68k_memory[i].addr;
  		ram_resource[i].end = m68k_memory[i].addr+m68k_memory[i].size-1;
  		request_resource(&iomem_resource, &ram_resource[i]);
  	}
  
  	/* initialize chipram allocator */
  	amiga_chip_init();
  
  	/* our beloved beeper */
  	if (AMIGAHW_PRESENT(AMI_AUDIO))
  		amiga_init_sound();
  
  	/*
  	 * if it is an A3000, set the magic bit that forces
  	 * a hard rekick
  	 */
  	if (AMIGAHW_PRESENT(MAGIC_REKICK))
  		*(unsigned char *)ZTWO_VADDR(0xde0002) |= 0x80;
  }
  
  static unsigned short jiffy_ticks;
  
  static void __init amiga_sched_init(irq_handler_t timer_routine)
  {
  	static struct resource sched_res = {
  		.name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
  	};
  	jiffy_ticks = (amiga_eclock+HZ/2)/HZ;
  
  	if (request_resource(&mb_resources._ciab, &sched_res))
  		printk("Cannot allocate ciab.ta{lo,hi}\n");
  	ciab.cra &= 0xC0;   /* turn off timer A, continuous mode, from Eclk */
  	ciab.talo = jiffy_ticks % 256;
  	ciab.tahi = jiffy_ticks / 256;
  
  	/* install interrupt service routine for CIAB Timer A
  	 *
  	 * Please don't change this to use ciaa, as it interferes with the
  	 * SCSI code. We'll have to take a look at this later
  	 */
  	request_irq(IRQ_AMIGA_CIAB_TA, timer_routine, 0, "timer", NULL);
  	/* start timer */
  	ciab.cra |= 0x11;
  }
  
  #define TICK_SIZE 10000
  
  /* This is always executed with interrupts disabled.  */
  static unsigned long amiga_gettimeoffset(void)
  {
  	unsigned short hi, lo, hi2;
  	unsigned long ticks, offset = 0;
  
  	/* read CIA B timer A current value */
  	hi  = ciab.tahi;
  	lo  = ciab.talo;
  	hi2 = ciab.tahi;
  
  	if (hi != hi2) {
  		lo = ciab.talo;
  		hi = hi2;
  	}
  
  	ticks = hi << 8 | lo;
  
  	if (ticks > jiffy_ticks / 2)
  		/* check for pending interrupt */
  		if (cia_set_irq(&ciab_base, 0) & CIA_ICR_TA)
  			offset = 10000;
  
  	ticks = jiffy_ticks - ticks;
  	ticks = (10000 * ticks) / jiffy_ticks;
  
  	return ticks + offset;
  }
  
  static int a3000_hwclk(int op, struct rtc_time *t)
  {
  	tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
  
  	if (!op) { /* read */
  		t->tm_sec  = tod_3000.second1 * 10 + tod_3000.second2;
  		t->tm_min  = tod_3000.minute1 * 10 + tod_3000.minute2;
  		t->tm_hour = tod_3000.hour1   * 10 + tod_3000.hour2;
  		t->tm_mday = tod_3000.day1    * 10 + tod_3000.day2;
  		t->tm_wday = tod_3000.weekday;
  		t->tm_mon  = tod_3000.month1  * 10 + tod_3000.month2 - 1;
  		t->tm_year = tod_3000.year1   * 10 + tod_3000.year2;
  		if (t->tm_year <= 69)
  			t->tm_year += 100;
  	} else {
  		tod_3000.second1 = t->tm_sec / 10;
  		tod_3000.second2 = t->tm_sec % 10;
  		tod_3000.minute1 = t->tm_min / 10;
  		tod_3000.minute2 = t->tm_min % 10;
  		tod_3000.hour1   = t->tm_hour / 10;
  		tod_3000.hour2   = t->tm_hour % 10;
  		tod_3000.day1    = t->tm_mday / 10;
  		tod_3000.day2    = t->tm_mday % 10;
  		if (t->tm_wday != -1)
  			tod_3000.weekday = t->tm_wday;
  		tod_3000.month1  = (t->tm_mon + 1) / 10;
  		tod_3000.month2  = (t->tm_mon + 1) % 10;
  		if (t->tm_year >= 100)
  			t->tm_year -= 100;
  		tod_3000.year1   = t->tm_year / 10;
  		tod_3000.year2   = t->tm_year % 10;
  	}
  
  	tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
  
  	return 0;
  }
  
  static int a2000_hwclk(int op, struct rtc_time *t)
  {
  	int cnt = 5;
  
  	tod_2000.cntrl1 = TOD2000_CNTRL1_HOLD;
  
  	while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt--) {
  		tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
  		udelay(70);
  		tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
  	}
  
  	if (!cnt)
  		printk(KERN_INFO "hwclk: timed out waiting for RTC (0x%x)\n",
  			tod_2000.cntrl1);
  
  	if (!op) { /* read */
  		t->tm_sec  = tod_2000.second1     * 10 + tod_2000.second2;
  		t->tm_min  = tod_2000.minute1     * 10 + tod_2000.minute2;
  		t->tm_hour = (tod_2000.hour1 & 3) * 10 + tod_2000.hour2;
  		t->tm_mday = tod_2000.day1        * 10 + tod_2000.day2;
  		t->tm_wday = tod_2000.weekday;
  		t->tm_mon  = tod_2000.month1      * 10 + tod_2000.month2 - 1;
  		t->tm_year = tod_2000.year1       * 10 + tod_2000.year2;
  		if (t->tm_year <= 69)
  			t->tm_year += 100;
  
  		if (!(tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)) {
  			if (!(tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour == 12)
  				t->tm_hour = 0;
  			else if ((tod_2000.hour1 & TOD2000_HOUR1_PM) && t->tm_hour != 12)
  				t->tm_hour += 12;
  		}
  	} else {
  		tod_2000.second1 = t->tm_sec / 10;
  		tod_2000.second2 = t->tm_sec % 10;
  		tod_2000.minute1 = t->tm_min / 10;
  		tod_2000.minute2 = t->tm_min % 10;
  		if (tod_2000.cntrl3 & TOD2000_CNTRL3_24HMODE)
  			tod_2000.hour1 = t->tm_hour / 10;
  		else if (t->tm_hour >= 12)
  			tod_2000.hour1 = TOD2000_HOUR1_PM +
  				(t->tm_hour - 12) / 10;
  		else
  			tod_2000.hour1 = t->tm_hour / 10;
  		tod_2000.hour2   = t->tm_hour % 10;
  		tod_2000.day1    = t->tm_mday / 10;
  		tod_2000.day2    = t->tm_mday % 10;
  		if (t->tm_wday != -1)
  			tod_2000.weekday = t->tm_wday;
  		tod_2000.month1  = (t->tm_mon + 1) / 10;
  		tod_2000.month2  = (t->tm_mon + 1) % 10;
  		if (t->tm_year >= 100)
  			t->tm_year -= 100;
  		tod_2000.year1   = t->tm_year / 10;
  		tod_2000.year2   = t->tm_year % 10;
  	}
  
  	tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
  
  	return 0;
  }
  
  static int amiga_set_clock_mmss(unsigned long nowtime)
  {
  	short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;
  
  	if (AMIGAHW_PRESENT(A3000_CLK)) {
  		tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
  
  		tod_3000.second1 = real_seconds / 10;
  		tod_3000.second2 = real_seconds % 10;
  		tod_3000.minute1 = real_minutes / 10;
  		tod_3000.minute2 = real_minutes % 10;
  
  		tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
  	} else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
  		int cnt = 5;
  
  		tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
  
  		while ((tod_2000.cntrl1 & TOD2000_CNTRL1_BUSY) && cnt--) {
  			tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
  			udelay(70);
  			tod_2000.cntrl1 |= TOD2000_CNTRL1_HOLD;
  		}
  
  		if (!cnt)
  			printk(KERN_INFO "set_clock_mmss: timed out waiting for RTC (0x%x)\n", tod_2000.cntrl1);
  
  		tod_2000.second1 = real_seconds / 10;
  		tod_2000.second2 = real_seconds % 10;
  		tod_2000.minute1 = real_minutes / 10;
  		tod_2000.minute2 = real_minutes % 10;
  
  		tod_2000.cntrl1 &= ~TOD2000_CNTRL1_HOLD;
  	}
  
  	return 0;
  }
  
  static unsigned int amiga_get_ss(void)
  {
  	unsigned int s;
  
  	if (AMIGAHW_PRESENT(A3000_CLK)) {
  		tod_3000.cntrl1 = TOD3000_CNTRL1_HOLD;
  		s = tod_3000.second1 * 10 + tod_3000.second2;
  		tod_3000.cntrl1 = TOD3000_CNTRL1_FREE;
  	} else /* if (AMIGAHW_PRESENT(A2000_CLK)) */ {
  		s = tod_2000.second1 * 10 + tod_2000.second2;
  	}
  	return s;
  }
  
  static NORET_TYPE void amiga_reset(void)
      ATTRIB_NORET;
  
  static void amiga_reset(void)
  {
  	unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040);
  	unsigned long jmp_addr = virt_to_phys(&&jmp_addr_label);
  
  	local_irq_disable();
  	if (CPU_IS_040_OR_060)
  		/* Setup transparent translation registers for mapping
  		 * of 16 MB kernel segment before disabling translation
  		 */
  		asm volatile ("\n"
  			"	move.l	%0,%%d0\n"
  			"	and.l	#0xff000000,%%d0\n"
  			"	or.w	#0xe020,%%d0\n"   /* map 16 MB, enable, cacheable */
  			"	.chip	68040\n"
  			"	movec	%%d0,%%itt0\n"
  			"	movec	%%d0,%%dtt0\n"
  			"	.chip	68k\n"
  			"	jmp	%0@\n"
  			: /* no outputs */
  			: "a" (jmp_addr040)
  			: "d0");
  	else
  		/* for 680[23]0, just disable translation and jump to the physical
  		 * address of the label
  		 */
  		asm volatile ("\n"
  			"	pmove	%%tc,%@\n"
  			"	bclr	#7,%@\n"
  			"	pmove	%@,%%tc\n"
  			"	jmp	%0@\n"
  			: /* no outputs */
  			: "a" (jmp_addr));
  jmp_addr_label040:
  	/* disable translation on '040 now */
  	asm volatile ("\n"
  		"	moveq	#0,%%d0\n"
  		"	.chip	68040\n"
  		"	movec	%%d0,%%tc\n"	/* disable MMU */
  		"	.chip	68k\n"
  		: /* no outputs */
  		: /* no inputs */
  		: "d0");
  
  	jmp_addr_label:
  	/* pickup reset address from AmigaOS ROM, reset devices and jump
  	 * to reset address
  	 */
  	asm volatile ("\n"
  		"	move.w	#0x2700,%sr\n"
  		"	lea	0x01000000,%a0\n"
  		"	sub.l	%a0@(-0x14),%a0\n"
  		"	move.l	%a0@(4),%a0\n"
  		"	subq.l	#2,%a0\n"
  		"	jra	1f\n"
  		/* align on a longword boundary */
  		"	" __ALIGN_STR "\n"
  		"1:\n"
  		"	reset\n"
  		"	jmp   %a0@");
  
  	for (;;)
  		;
  }
  
  
      /*
       *  Debugging
       */
  
  #define SAVEKMSG_MAXMEM		128*1024
  
  #define SAVEKMSG_MAGIC1		0x53415645	/* 'SAVE' */
  #define SAVEKMSG_MAGIC2		0x4B4D5347	/* 'KMSG' */
  
  struct savekmsg {
  	unsigned long magic1;		/* SAVEKMSG_MAGIC1 */
  	unsigned long magic2;		/* SAVEKMSG_MAGIC2 */
  	unsigned long magicptr;		/* address of magic1 */
  	unsigned long size;
  	char data[0];
  };
  
  static struct savekmsg *savekmsg;
  
  static void amiga_mem_console_write(struct console *co, const char *s,
  				    unsigned int count)
  {
  	if (savekmsg->size + count <= SAVEKMSG_MAXMEM-sizeof(struct savekmsg)) {
  		memcpy(savekmsg->data + savekmsg->size, s, count);
  		savekmsg->size += count;
  	}
  }
  
  static int __init amiga_savekmsg_setup(char *arg)
  {
  	static struct resource debug_res = { .name = "Debug" };
  
  	if (!MACH_IS_AMIGA || strcmp(arg, "mem"))
  		goto done;
  
  	if (!AMIGAHW_PRESENT(CHIP_RAM)) {
  		printk("Warning: no chipram present for debugging\n");
  		goto done;
  	}
  
  	savekmsg = amiga_chip_alloc_res(SAVEKMSG_MAXMEM, &debug_res);
  	savekmsg->magic1 = SAVEKMSG_MAGIC1;
  	savekmsg->magic2 = SAVEKMSG_MAGIC2;
  	savekmsg->magicptr = ZTWO_PADDR(savekmsg);
  	savekmsg->size = 0;
  
  	amiga_console_driver.write = amiga_mem_console_write;
  	register_console(&amiga_console_driver);
  
  done:
  	return 0;
  }
  
  early_param("debug", amiga_savekmsg_setup);
  
  static void amiga_serial_putc(char c)
  {
  	amiga_custom.serdat = (unsigned char)c | 0x100;
  	while (!(amiga_custom.serdatr & 0x2000))
  		;
  }
  
  void amiga_serial_console_write(struct console *co, const char *s,
  				unsigned int count)
  {
  	while (count--) {
  		if (*s == '\n')
  			amiga_serial_putc('\r');
  		amiga_serial_putc(*s++);
  	}
  }
  
  #ifdef CONFIG_SERIAL_CONSOLE
  void amiga_serial_puts(const char *s)
  {
  	amiga_serial_console_write(NULL, s, strlen(s));
  }
  
  int amiga_serial_console_wait_key(struct console *co)
  {
  	int ch;
  
  	while (!(amiga_custom.intreqr & IF_RBF))
  		barrier();
  	ch = amiga_custom.serdatr & 0xff;
  	/* clear the interrupt, so that another character can be read */
  	amiga_custom.intreq = IF_RBF;
  	return ch;
  }
  
  void amiga_serial_gets(struct console *co, char *s, int len)
  {
  	int ch, cnt = 0;
  
  	while (1) {
  		ch = amiga_serial_console_wait_key(co);
  
  		/* Check for backspace. */
  		if (ch == 8 || ch == 127) {
  			if (cnt == 0) {
  				amiga_serial_putc('\007');
  				continue;
  			}
  			cnt--;
  			amiga_serial_puts("\010 \010");
  			continue;
  		}
  
  		/* Check for enter. */
  		if (ch == 10 || ch == 13)
  			break;
  
  		/* See if line is too long. */
  		if (cnt >= len + 1) {
  			amiga_serial_putc(7);
  			cnt--;
  			continue;
  		}
  
  		/* Store and echo character. */
  		s[cnt++] = ch;
  		amiga_serial_putc(ch);
  	}
  	/* Print enter. */
  	amiga_serial_puts("\r\n");
  	s[cnt] = 0;
  }
  #endif
  
  static int __init amiga_debug_setup(char *arg)
  {
  	if (MACH_IS_AMIGA && !strcmp(arg, "ser")) {
  		/* no initialization required (?) */
  		amiga_console_driver.write = amiga_serial_console_write;
  		register_console(&amiga_console_driver);
  	}
  	return 0;
  }
  
  early_param("debug", amiga_debug_setup);
  
  #ifdef CONFIG_HEARTBEAT
  static void amiga_heartbeat(int on)
  {
  	if (on)
  		ciaa.pra &= ~2;
  	else
  		ciaa.pra |= 2;
  }
  #endif
  
      /*
       *  Amiga specific parts of /proc
       */
  
  static void amiga_get_model(char *model)
  {
  	strcpy(model, amiga_model_name);
  }
  
  
  static int amiga_get_hardware_list(char *buffer)
  {
  	int len = 0;
  
  	if (AMIGAHW_PRESENT(CHIP_RAM))
  		len += sprintf(buffer+len, "Chip RAM:\t%ldK\n", amiga_chip_size>>10);
  	len += sprintf(buffer+len, "PS Freq:\t%dHz\nEClock Freq:\t%ldHz\n",
  			amiga_psfreq, amiga_eclock);
  	if (AMIGAHW_PRESENT(AMI_VIDEO)) {
  		char *type;
  		switch (amiga_chipset) {
  		case CS_OCS:
  			type = "OCS";
  			break;
  		case CS_ECS:
  			type = "ECS";
  			break;
  		case CS_AGA:
  			type = "AGA";
  			break;
  		default:
  			type = "Old or Unknown";
  			break;
  		}
  		len += sprintf(buffer+len, "Graphics:\t%s\n", type);
  	}
  
  #define AMIGAHW_ANNOUNCE(name, str)			\
  	if (AMIGAHW_PRESENT(name))			\
  		len += sprintf (buffer+len, "\t%s\n", str)
  
  	len += sprintf (buffer + len, "Detected hardware:\n");
  
  	AMIGAHW_ANNOUNCE(AMI_VIDEO, "Amiga Video");
  	AMIGAHW_ANNOUNCE(AMI_BLITTER, "Blitter");
  	AMIGAHW_ANNOUNCE(AMBER_FF, "Amber Flicker Fixer");
  	AMIGAHW_ANNOUNCE(AMI_AUDIO, "Amiga Audio");
  	AMIGAHW_ANNOUNCE(AMI_FLOPPY, "Floppy Controller");
  	AMIGAHW_ANNOUNCE(A3000_SCSI, "SCSI Controller WD33C93 (A3000 style)");
  	AMIGAHW_ANNOUNCE(A4000_SCSI, "SCSI Controller NCR53C710 (A4000T style)");
  	AMIGAHW_ANNOUNCE(A1200_IDE, "IDE Interface (A1200 style)");
  	AMIGAHW_ANNOUNCE(A4000_IDE, "IDE Interface (A4000 style)");
  	AMIGAHW_ANNOUNCE(CD_ROM, "Internal CD ROM drive");
  	AMIGAHW_ANNOUNCE(AMI_KEYBOARD, "Keyboard");
  	AMIGAHW_ANNOUNCE(AMI_MOUSE, "Mouse Port");
  	AMIGAHW_ANNOUNCE(AMI_SERIAL, "Serial Port");
  	AMIGAHW_ANNOUNCE(AMI_PARALLEL, "Parallel Port");
  	AMIGAHW_ANNOUNCE(A2000_CLK, "Hardware Clock (A2000 style)");
  	AMIGAHW_ANNOUNCE(A3000_CLK, "Hardware Clock (A3000 style)");
  	AMIGAHW_ANNOUNCE(CHIP_RAM, "Chip RAM");
  	AMIGAHW_ANNOUNCE(PAULA, "Paula 8364");
  	AMIGAHW_ANNOUNCE(DENISE, "Denise 8362");
  	AMIGAHW_ANNOUNCE(DENISE_HR, "Denise 8373");
  	AMIGAHW_ANNOUNCE(LISA, "Lisa 8375");
  	AMIGAHW_ANNOUNCE(AGNUS_PAL, "Normal/Fat PAL Agnus 8367/8371");
  	AMIGAHW_ANNOUNCE(AGNUS_NTSC, "Normal/Fat NTSC Agnus 8361/8370");
  	AMIGAHW_ANNOUNCE(AGNUS_HR_PAL, "Fat Hires PAL Agnus 8372");
  	AMIGAHW_ANNOUNCE(AGNUS_HR_NTSC, "Fat Hires NTSC Agnus 8372");
  	AMIGAHW_ANNOUNCE(ALICE_PAL, "PAL Alice 8374");
  	AMIGAHW_ANNOUNCE(ALICE_NTSC, "NTSC Alice 8374");
  	AMIGAHW_ANNOUNCE(MAGIC_REKICK, "Magic Hard Rekick");
  	AMIGAHW_ANNOUNCE(PCMCIA, "PCMCIA Slot");
  #ifdef CONFIG_ZORRO
  	if (AMIGAHW_PRESENT(ZORRO))
  		len += sprintf(buffer+len, "\tZorro II%s AutoConfig: %d Expansion "
  				"Device%s\n",
  				AMIGAHW_PRESENT(ZORRO3) ? "I" : "",
  				zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
  #endif /* CONFIG_ZORRO */
  
  #undef AMIGAHW_ANNOUNCE
  
  	return len;
  }
  