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-rw-r--r--arch/m68k/q40/config.c425
1 files changed, 425 insertions, 0 deletions
diff --git a/arch/m68k/q40/config.c b/arch/m68k/q40/config.c
new file mode 100644
index 000000000..e3c35c60c
--- /dev/null
+++ b/arch/m68k/q40/config.c
@@ -0,0 +1,425 @@
+/*
+ * arch/m68k/q40/config.c
+ *
+ * originally based on:
+ *
+ * linux/bvme/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 README.legal in the main directory of this archive
+ * for more details.
+ */
+
+#include <stdarg.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/kd.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/major.h>
+
+#include <asm/bootinfo.h>
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/traps.h>
+#include <asm/machdep.h>
+#include <asm/q40_master.h>
+#include <asm/keyboard.h>
+
+extern void fd_floppy_eject(void);
+extern void fd_floppy_setup(char *str, int *ints);
+
+extern void q40_process_int (int level, struct pt_regs *regs);
+extern void (*q40_sys_default_handler[]) (int, void *, struct pt_regs *); /* added just for debugging */
+extern void q40_init_IRQ (void);
+extern void q40_free_irq (unsigned int, void *);
+extern int q40_get_irq_list (char *);
+extern void q40_enable_irq (unsigned int);
+extern void q40_disable_irq (unsigned int);
+static void q40_get_model(char *model);
+static int q40_get_hardware_list(char *buffer);
+extern int q40_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id);
+extern void q40_sched_init(void (*handler)(int, void *, struct pt_regs *));
+extern int q40_keyb_init(void);
+extern int q40_kbdrate (struct kbd_repeat *);
+extern unsigned long q40_gettimeoffset (void);
+extern void q40_gettod (int *year, int *mon, int *day, int *hour,
+ int *min, int *sec);
+extern int q40_hwclk (int, struct hwclk_time *);
+extern int q40_set_clock_mmss (unsigned long);
+extern void q40_reset (void);
+extern void q40_waitbut(void);
+void q40_set_vectors (void);
+extern void (*kd_mksound)(unsigned int, unsigned int);
+void q40_mksound(unsigned int /*freq*/, unsigned int /*ticks*/ );
+
+extern char *saved_command_line;
+extern char m68k_debug_device[];
+static void q40_mem_console_write(struct console *co, const char *b,
+ unsigned int count);
+
+static int ql_ticks=0;
+static int sound_ticks=0;
+
+static unsigned char bcd2bin (unsigned char b);
+static unsigned char bin2bcd (unsigned char b);
+
+static int q40_wait_key(struct console *co){return 0;}
+static struct console q40_console_driver = {
+ "debug",
+ NULL, /* write */
+ NULL, /* read */
+ NULL, /* device */
+ q40_wait_key, /* wait_key */
+ NULL, /* unblank */
+ NULL, /* setup */
+ CON_PRINTBUFFER,
+ -1,
+ 0,
+ NULL
+};
+
+
+/* Save tick handler routine pointer, will point to do_timer() in
+ * kernel/sched.c */
+
+/* static void (*tick_handler)(int, void *, struct pt_regs *); */
+
+
+/* early debugging function:*/
+extern char *q40_mem_cptr; /*=(char *)0xff020000;*/
+static int _cpleft;
+
+static void q40_mem_console_write(struct console *co, const char *s,
+ unsigned int count)
+{
+ char *p=(char *)s;
+
+ if (count<_cpleft)
+ while (count-- >0){
+ *q40_mem_cptr=*p++;
+ q40_mem_cptr+=4;
+ _cpleft--;
+ }
+}
+#if 0
+void printq40(char *str)
+{
+ int l=strlen(str);
+ char *p=q40_mem_cptr;
+
+ while (l-- >0 && _cpleft-- >0)
+ {
+ *p=*str++;
+ p+=4;
+ }
+ q40_mem_cptr=p;
+}
+#endif
+
+#if 0
+int q40_kbdrate (struct kbd_repeat *k)
+{
+ return 0;
+}
+#endif
+
+void q40_reset()
+{
+
+ printk ("\n\n*******************************************\n"
+ "Called q40_reset : press the RESET button!! \n");
+ printk( "*******************************************\n");
+
+ while(1)
+ ;
+}
+
+static void q40_get_model(char *model)
+{
+ sprintf(model, "Q40");
+}
+
+
+/* No hardware options on Q40? */
+
+static int q40_get_hardware_list(char *buffer)
+{
+ *buffer = '\0';
+ return 0;
+}
+
+
+__initfunc(void config_q40(void))
+{
+ mach_sched_init = q40_sched_init; /* ok */
+ /*mach_kbdrate = q40_kbdrate;*/ /* unneeded ?*/
+ mach_keyb_init = q40_keyb_init; /* OK */
+ mach_init_IRQ = q40_init_IRQ;
+ mach_gettimeoffset = q40_gettimeoffset;
+ mach_gettod = q40_gettod;
+ mach_hwclk = q40_hwclk;
+ mach_set_clock_mmss = q40_set_clock_mmss;
+/* mach_mksound = q40_mksound; */
+ mach_reset = q40_reset; /* use reset button instead !*/
+ mach_free_irq = q40_free_irq;
+ mach_process_int = q40_process_int;
+ mach_get_irq_list = q40_get_irq_list;
+ mach_request_irq = q40_request_irq;
+ enable_irq = q40_enable_irq;
+ disable_irq = q40_disable_irq;
+ mach_default_handler = &q40_sys_default_handler;
+ mach_get_model = q40_get_model; /* no use..*/
+ mach_get_hardware_list = q40_get_hardware_list; /* no use */
+ kd_mksound = q40_mksound;
+ /*mach_kbd_leds = q40kbd_leds;*/
+#ifdef CONFIG_MAGIC_SYSRQ
+ mach_sysrq_key = 0x54;
+#endif
+ conswitchp = &dummy_con;
+#ifdef CONFIG_BLK_DEV_FD
+ mach_floppy_setup = fd_floppy_setup;
+ mach_floppy_eject = fd_floppy_eject;
+ /**/
+#endif
+
+ mach_max_dma_address = 0; /* no DMA at all */
+
+
+/* userfull for early debuging stages writes kernel messages into SRAM */
+
+ if (!strncmp( m68k_debug_device,"mem",3 ))
+ {
+ /*printk("using NVRAM debug, q40_mem_cptr=%p\n",q40_mem_cptr);*/
+ _cpleft=2000-((long)q40_mem_cptr-0xff020000)/4;
+ q40_console_driver.write = q40_mem_console_write;
+ register_console(&q40_console_driver);
+ }
+}
+
+
+int q40_parse_bootinfo(const struct bi_record *rec)
+{
+ return 1; /* unknown */
+}
+
+#define DAC_LEFT ((unsigned char *)0xff008000)
+#define DAC_RIGHT ((unsigned char *)0xff008004)
+void q40_mksound(unsigned int hz, unsigned int ticks)
+{
+ /* for now ignore hz, except that hz==0 switches off sound */
+ /* simply alternate the ampl 0-255-0-.. at 200Hz */
+ if (hz==0)
+ {
+ if (sound_ticks)
+ sound_ticks=1; /* atomic - no irq spinlock used */
+
+ *DAC_LEFT=0;
+ *DAC_RIGHT=0;
+
+ return;
+ }
+ /* sound itself is done in q40_timer_int */
+ if (sound_ticks == 0) sound_ticks=1000; /* pretty long beep */
+ sound_ticks=ticks<<1;
+}
+
+static void (*q40_timer_routine)(int, void *, struct pt_regs *);
+
+static void q40_timer_int (int irq, void *dev_id, struct pt_regs *fp)
+{
+#if (HZ==10000)
+ master_outb(-1,SAMPLE_CLEAR_REG);
+#else /* must be 50 or 100 */
+ master_outb(-1,FRAME_CLEAR_REG);
+#endif
+
+#if (HZ==100)
+ ql_ticks = ql_ticks ? 0 : 1;
+ if (sound_ticks)
+ {
+ unsigned char sval=(sound_ticks & 1) ? 0 : 255;
+ sound_ticks--;
+ *DAC_LEFT=sval;
+ *DAC_RIGHT=sval;
+ }
+ if (ql_ticks) return;
+#endif
+ q40_timer_routine(irq, dev_id, fp);
+}
+
+
+void q40_sched_init (void (*timer_routine)(int, void *, struct pt_regs *))
+{
+ int timer_irq;
+
+ q40_timer_routine = timer_routine;
+
+#if (HZ==10000)
+ timer_irq=Q40_IRQ_TIMER;
+#else
+ timer_irq=Q40_IRQ_FRAME;
+#endif
+
+ /*printk("registering sched/timer IRQ %d\n", timer_irq);*/
+
+ if (request_irq(timer_irq, q40_timer_int, 0,
+ "timer", q40_timer_int))
+ panic ("Couldn't register timer int");
+
+#if (HZ==10000)
+ master_outb(SAMPLE_LOW,SAMPLE_RATE_REG);
+ master_outb(-1,SAMPLE_CLEAR_REG);
+ master_outb(1,SAMPLE_ENABLE_REG);
+#else
+ master_outb(-1,FRAME_CLEAR_REG); /* not necessary ? */
+#if (HZ==100)
+ master_outb( 1,FRAME_RATE_REG);
+#endif
+#endif
+}
+
+
+unsigned long q40_gettimeoffset (void)
+{
+#if (HZ==100)
+ return 5000*(ql_ticks!=0);
+#else
+ return 0;
+#endif
+}
+
+extern void q40_gettod (int *year, int *mon, int *day, int *hour,
+ int *min, int *sec)
+{
+ RTC_CTRL |= RTC_READ;
+ *year = bcd2bin (RTC_YEAR);
+ *mon = bcd2bin (RTC_MNTH)-1;
+ *day = bcd2bin (RTC_DATE);
+ *hour = bcd2bin (RTC_HOUR);
+ *min = bcd2bin (RTC_MINS);
+ *sec = bcd2bin (RTC_SECS);
+ RTC_CTRL &= ~(RTC_READ);
+
+}
+
+static unsigned char bcd2bin (unsigned char b)
+{
+ return ((b>>4)*10 + (b&15));
+}
+
+static unsigned char bin2bcd (unsigned char b)
+{
+ return (((b/10)*16) + (b%10));
+}
+
+
+/*
+ * Looks like op is non-zero for setting the clock, and zero for
+ * reading the clock.
+ *
+ * struct hwclk_time {
+ * unsigned sec; 0..59
+ * unsigned min; 0..59
+ * unsigned hour; 0..23
+ * unsigned day; 1..31
+ * unsigned mon; 0..11
+ * unsigned year; 00...
+ * int wday; 0..6, 0 is Sunday, -1 means unknown/don't set
+ * };
+ */
+
+int q40_hwclk(int op, struct hwclk_time *t)
+{
+ if (op)
+ { /* Write.... */
+ RTC_CTRL |= RTC_WRITE;
+
+ RTC_SECS = bin2bcd(t->sec);
+ RTC_MINS = bin2bcd(t->min);
+ RTC_HOUR = bin2bcd(t->hour);
+ RTC_DATE = bin2bcd(t->day);
+ RTC_MNTH = bin2bcd(t->mon + 1);
+ RTC_YEAR = bin2bcd(t->year%100);
+ if (t->wday >= 0)
+ RTC_DOW = bin2bcd(t->wday+1);
+
+ RTC_CTRL &= ~(RTC_WRITE);
+ }
+ else
+ { /* Read.... */
+ RTC_CTRL |= RTC_READ;
+
+ t->year = bcd2bin (RTC_YEAR);
+ t->mon = bcd2bin (RTC_MNTH)-1;
+ t->day = bcd2bin (RTC_DATE);
+ t->hour = bcd2bin (RTC_HOUR);
+ t->min = bcd2bin (RTC_MINS);
+ t->sec = bcd2bin (RTC_SECS);
+
+ RTC_CTRL &= ~(RTC_READ);
+
+ if (t->year < 70)
+ t->year += 100;
+ t->wday = bcd2bin(RTC_DOW)-1;
+
+ }
+
+ return 0;
+}
+
+/*
+ * Set the minutes and seconds from seconds value 'nowtime'. Fail if
+ * clock is out by > 30 minutes. Logic lifted from atari code.
+ * Algorithm is to wait for the 10ms register to change, and then to
+ * wait a short while, and then set it.
+ */
+
+int q40_set_clock_mmss (unsigned long nowtime)
+{
+ int retval = 0;
+ short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;
+
+ int rtc_minutes;
+
+
+ rtc_minutes = bcd2bin (RTC_MINS);
+
+ if ((rtc_minutes < real_minutes
+ ? real_minutes - rtc_minutes
+ : rtc_minutes - real_minutes) < 30)
+ {
+ RTC_CTRL |= RTC_WRITE;
+ RTC_MINS = bin2bcd(real_minutes);
+ RTC_SECS = bin2bcd(real_seconds);
+ RTC_CTRL &= ~(RTC_WRITE);
+ }
+ else
+ retval = -1;
+
+
+ return retval;
+}
+
+extern void q40kbd_init_hw(void);
+
+int q40_keyb_init (void)
+{
+ q40kbd_init_hw();
+ return 0;
+}
+
+#if 0
+/* dummy to cause */
+void q40_slow_io()
+{
+ return;
+}
+#endif
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