1 files changed, 365 insertions, 0 deletions

diff --git a/arch/m68k/q40/config.c b/arch/m68k/q40/config.c
new file mode 100644
index 000000000000..02b626bae4ae
--- /dev/null
+++ b/arch/m68k/q40/config.c
@@ -0,0 +1,365 @@
+/*
+ *  arch/m68k/q40/config.c
+ *
+ *  Copyright (C) 1999 Richard Zidlicky
+ *
+ * originally based on:
+ *
+ *  linux/bvme/config.c
+ *
+ * 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 <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/major.h>
+#include <linux/serial_reg.h>
+#include <linux/rtc.h>
+#include <linux/vt_kern.h>
+
+#include <asm/io.h>
+#include <asm/rtc.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>
+
+extern void floppy_setup(char *str, int *ints);
+
+extern irqreturn_t q40_process_int (int level, struct pt_regs *regs);
+extern irqreturn_t (*q40_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  show_q40_interrupts (struct seq_file *, void *);
+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, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id);
+extern void q40_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+
+extern unsigned long q40_gettimeoffset (void);
+extern int q40_hwclk (int, struct rtc_time *);
+extern unsigned int q40_get_ss (void);
+extern int q40_set_clock_mmss (unsigned long);
+static int q40_get_rtc_pll(struct rtc_pll_info *pll);
+static int q40_set_rtc_pll(struct rtc_pll_info *pll);
+extern void q40_reset (void);
+void q40_halt(void);
+extern void q40_waitbut(void);
+void q40_set_vectors (void);
+
+extern void q40_mksound(unsigned int /*freq*/, unsigned int /*ticks*/ );
+
+extern char m68k_debug_device[];
+static void q40_mem_console_write(struct console *co, const char *b,
+                                    unsigned int count);
+
+extern int ql_ticks;
+
+static struct console q40_console_driver = {
+        .name =         "debug",
+        .flags =        CON_PRINTBUFFER,
+        .index =        -1,
+};
+
+
+/* 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
+
+static int halted=0;
+
+#ifdef CONFIG_HEARTBEAT
+static void q40_heartbeat(int on)
+{
+  if (halted) return;
+
+  if (on)
+    Q40_LED_ON();
+  else
+    Q40_LED_OFF();
+}
+#endif
+
+void q40_reset(void)
+{
+        halted=1;
+        printk ("\n\n*******************************************\n"
+                "Called q40_reset : press the RESET button!! \n"
+                "*******************************************\n");
+        Q40_LED_ON();
+        while(1) ;
+}
+void q40_halt(void)
+{
+        halted=1;
+        printk ("\n\n*******************\n"
+                    "  Called q40_halt\n"
+                    "*******************\n");
+        Q40_LED_ON();
+        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;
+}
+
+static unsigned int serports[]={0x3f8,0x2f8,0x3e8,0x2e8,0};
+void q40_disable_irqs(void)
+{
+  unsigned i,j;
+
+  j=0;
+  while((i=serports[j++])) outb(0,i+UART_IER);
+  master_outb(0,EXT_ENABLE_REG);
+  master_outb(0,KEY_IRQ_ENABLE_REG);
+}
+
+void __init config_q40(void)
+{
+    mach_sched_init      = q40_sched_init;
+
+    mach_init_IRQ        = q40_init_IRQ;
+    mach_gettimeoffset   = q40_gettimeoffset;
+    mach_hwclk           = q40_hwclk;
+    mach_get_ss          = q40_get_ss;
+    mach_get_rtc_pll     = q40_get_rtc_pll;
+    mach_set_rtc_pll     = q40_set_rtc_pll;
+    mach_set_clock_mmss  = q40_set_clock_mmss;
+
+    mach_reset           = q40_reset;
+    mach_free_irq        = q40_free_irq;
+    mach_process_int     = q40_process_int;
+    mach_get_irq_list    = show_q40_interrupts;
+    mach_request_irq     = q40_request_irq;
+    enable_irq           = q40_enable_irq;
+    disable_irq          = q40_disable_irq;
+    mach_default_handler = &q40_default_handler;
+    mach_get_model       = q40_get_model;
+    mach_get_hardware_list = q40_get_hardware_list;
+
+#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
+    mach_beep            = q40_mksound;
+#endif
+#ifdef CONFIG_HEARTBEAT
+    mach_heartbeat = q40_heartbeat;
+#endif
+    mach_halt = q40_halt;
+#ifdef CONFIG_DUMMY_CONSOLE
+    conswitchp = &dummy_con;
+#endif
+
+    /* disable a few things that SMSQ might have left enabled */
+    q40_disable_irqs();
+
+    /* no DMA at all, but ide-scsi requires it.. make sure
+     * all physical RAM fits into the boundary - otherwise
+     * allocator may play costly and useless tricks */
+    mach_max_dma_address = 1024*1024*1024;
+
+    /* useful for early debugging 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;
+}
+
+
+static inline unsigned char bcd2bin (unsigned char b)
+{
+        return ((b>>4)*10 + (b&15));
+}
+
+static inline unsigned char bin2bcd (unsigned char b)
+{
+        return (((b/10)*16) + (b%10));
+}
+
+
+unsigned long q40_gettimeoffset (void)
+{
+    return 5000*(ql_ticks!=0);
+}
+
+
+/*
+ * 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 rtc_time *t)
+{
+        if (op)
+        {       /* Write.... */
+                Q40_RTC_CTRL |= Q40_RTC_WRITE;
+
+                Q40_RTC_SECS = bin2bcd(t->tm_sec);
+                Q40_RTC_MINS = bin2bcd(t->tm_min);
+                Q40_RTC_HOUR = bin2bcd(t->tm_hour);
+                Q40_RTC_DATE = bin2bcd(t->tm_mday);
+                Q40_RTC_MNTH = bin2bcd(t->tm_mon + 1);
+                Q40_RTC_YEAR = bin2bcd(t->tm_year%100);
+                if (t->tm_wday >= 0)
+                        Q40_RTC_DOW = bin2bcd(t->tm_wday+1);
+
+                Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
+        }
+        else
+        {       /* Read....  */
+          Q40_RTC_CTRL |= Q40_RTC_READ;
+
+          t->tm_year = bcd2bin (Q40_RTC_YEAR);
+          t->tm_mon  = bcd2bin (Q40_RTC_MNTH)-1;
+          t->tm_mday = bcd2bin (Q40_RTC_DATE);
+          t->tm_hour = bcd2bin (Q40_RTC_HOUR);
+          t->tm_min  = bcd2bin (Q40_RTC_MINS);
+          t->tm_sec  = bcd2bin (Q40_RTC_SECS);
+
+          Q40_RTC_CTRL &= ~(Q40_RTC_READ);
+
+          if (t->tm_year < 70)
+            t->tm_year += 100;
+          t->tm_wday = bcd2bin(Q40_RTC_DOW)-1;
+
+        }
+
+        return 0;
+}
+
+unsigned int q40_get_ss(void)
+{
+        return bcd2bin(Q40_RTC_SECS);
+}
+
+/*
+ * Set the minutes and seconds from seconds value 'nowtime'.  Fail if
+ * clock is out by > 30 minutes.  Logic lifted from atari code.
+ */
+
+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 (Q40_RTC_MINS);
+
+        if ((rtc_minutes < real_minutes
+                ? real_minutes - rtc_minutes
+                        : rtc_minutes - real_minutes) < 30)
+        {
+                Q40_RTC_CTRL |= Q40_RTC_WRITE;
+                Q40_RTC_MINS = bin2bcd(real_minutes);
+                Q40_RTC_SECS = bin2bcd(real_seconds);
+                Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
+        }
+        else
+                retval = -1;
+
+
+        return retval;
+}
+
+
+/* get and set PLL calibration of RTC clock */
+#define Q40_RTC_PLL_MASK ((1<<5)-1)
+#define Q40_RTC_PLL_SIGN (1<<5)
+
+static int q40_get_rtc_pll(struct rtc_pll_info *pll)
+{
+        int tmp=Q40_RTC_CTRL;
+        pll->pll_value = tmp & Q40_RTC_PLL_MASK;
+        if (tmp & Q40_RTC_PLL_SIGN)
+                pll->pll_value = -pll->pll_value;
+        pll->pll_max=31;
+        pll->pll_min=-31;
+        pll->pll_posmult=512;
+        pll->pll_negmult=256;
+        pll->pll_clock=125829120;
+        return 0;
+}
+
+static int q40_set_rtc_pll(struct rtc_pll_info *pll)
+{
+        if (!pll->pll_ctrl){
+                /* the docs are a bit unclear so I am doublesetting */
+                /* RTC_WRITE here ... */
+                int tmp = (pll->pll_value & 31) | (pll->pll_value<0 ? 32 : 0) |
+                          Q40_RTC_WRITE;
+                Q40_RTC_CTRL |= Q40_RTC_WRITE;
+                Q40_RTC_CTRL = tmp;
+                Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
+                return 0;
+        } else
+                return -EINVAL;
+}