1 files changed, 229 insertions, 0 deletions

diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c
new file mode 100644
index 000000000000..0fcf9720c2fe
--- /dev/null
+++ b/arch/m68k/mvme147/config.c
@@ -0,0 +1,229 @@
+/*
+ *  arch/m68k/mvme147/config.c
+ *
+ *  Copyright (C) 1996 Dave Frascone [chaos@mindspring.com]
+ *  Cloned from        Richard Hirst [richard@sleepie.demon.co.uk]
+ *
+ * Based on:
+ *
+ *  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 <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/genhd.h>
+#include <linux/rtc.h>
+#include <linux/interrupt.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/rtc.h>
+#include <asm/machdep.h>
+#include <asm/mvme147hw.h>
+
+
+extern irqreturn_t mvme147_process_int (int level, struct pt_regs *regs);
+extern void mvme147_init_IRQ (void);
+extern void mvme147_free_irq (unsigned int, void *);
+extern int  show_mvme147_interrupts (struct seq_file *, void *);
+extern void mvme147_enable_irq (unsigned int);
+extern void mvme147_disable_irq (unsigned int);
+static void mvme147_get_model(char *model);
+static int  mvme147_get_hardware_list(char *buffer);
+extern int mvme147_request_irq (unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id);
+extern void mvme147_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));
+extern unsigned long mvme147_gettimeoffset (void);
+extern int mvme147_hwclk (int, struct rtc_time *);
+extern int mvme147_set_clock_mmss (unsigned long);
+extern void mvme147_reset (void);
+extern void mvme147_waitbut(void);
+
+
+static int bcd2int (unsigned char b);
+
+/* Save tick handler routine pointer, will point to do_timer() in
+ * kernel/sched.c, called via mvme147_process_int() */
+
+irqreturn_t (*tick_handler)(int, void *, struct pt_regs *);
+
+
+int mvme147_parse_bootinfo(const struct bi_record *bi)
+{
+        if (bi->tag == BI_VME_TYPE || bi->tag == BI_VME_BRDINFO)
+                return 0;
+        else
+                return 1;
+}
+
+void mvme147_reset(void)
+{
+        printk ("\r\n\nCalled mvme147_reset\r\n");
+        m147_pcc->watchdog = 0x0a;      /* Clear timer */
+        m147_pcc->watchdog = 0xa5;      /* Enable watchdog - 100ms to reset */
+        while (1)
+                ;
+}
+
+static void mvme147_get_model(char *model)
+{
+        sprintf(model, "Motorola MVME147");
+}
+
+
+static int mvme147_get_hardware_list(char *buffer)
+{
+        *buffer = '\0';
+
+        return 0;
+}
+
+
+void __init config_mvme147(void)
+{
+        mach_max_dma_address    = 0x01000000;
+        mach_sched_init         = mvme147_sched_init;
+        mach_init_IRQ           = mvme147_init_IRQ;
+        mach_gettimeoffset      = mvme147_gettimeoffset;
+        mach_hwclk              = mvme147_hwclk;
+        mach_set_clock_mmss     = mvme147_set_clock_mmss;
+        mach_reset              = mvme147_reset;
+        mach_free_irq           = mvme147_free_irq;
+        mach_process_int        = mvme147_process_int;
+        mach_get_irq_list       = show_mvme147_interrupts;
+        mach_request_irq        = mvme147_request_irq;
+        enable_irq              = mvme147_enable_irq;
+        disable_irq             = mvme147_disable_irq;
+        mach_get_model          = mvme147_get_model;
+        mach_get_hardware_list  = mvme147_get_hardware_list;
+
+        /* Board type is only set by newer versions of vmelilo/tftplilo */
+        if (!vme_brdtype)
+                vme_brdtype = VME_TYPE_MVME147;
+}
+
+
+/* Using pcc tick timer 1 */
+
+static irqreturn_t mvme147_timer_int (int irq, void *dev_id, struct pt_regs *fp)
+{
+        m147_pcc->t1_int_cntrl = PCC_TIMER_INT_CLR;
+        m147_pcc->t1_int_cntrl = PCC_INT_ENAB|PCC_LEVEL_TIMER1;
+        return tick_handler(irq, dev_id, fp);
+}
+
+
+void mvme147_sched_init (irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
+{
+        tick_handler = timer_routine;
+        request_irq (PCC_IRQ_TIMER1, mvme147_timer_int,
+                IRQ_FLG_REPLACE, "timer 1", NULL);
+
+        /* Init the clock with a value */
+        /* our clock goes off every 6.25us */
+        m147_pcc->t1_preload = PCC_TIMER_PRELOAD;
+        m147_pcc->t1_cntrl = 0x0;       /* clear timer */
+        m147_pcc->t1_cntrl = 0x3;       /* start timer */
+        m147_pcc->t1_int_cntrl = PCC_TIMER_INT_CLR;  /* clear pending ints */
+        m147_pcc->t1_int_cntrl = PCC_INT_ENAB|PCC_LEVEL_TIMER1;
+}
+
+/* This is always executed with interrupts disabled.  */
+/* XXX There are race hazards in this code XXX */
+unsigned long mvme147_gettimeoffset (void)
+{
+        volatile unsigned short *cp = (volatile unsigned short *)0xfffe1012;
+        unsigned short n;
+
+        n = *cp;
+        while (n != *cp)
+                n = *cp;
+
+        n -= PCC_TIMER_PRELOAD;
+        return (unsigned long)n * 25 / 4;
+}
+
+static int bcd2int (unsigned char b)
+{
+        return ((b>>4)*10 + (b&15));
+}
+
+int mvme147_hwclk(int op, struct rtc_time *t)
+{
+#warning check me!
+        if (!op) {
+                m147_rtc->ctrl = RTC_READ;
+                t->tm_year = bcd2int (m147_rtc->bcd_year);
+                t->tm_mon  = bcd2int (m147_rtc->bcd_mth);
+                t->tm_mday = bcd2int (m147_rtc->bcd_dom);
+                t->tm_hour = bcd2int (m147_rtc->bcd_hr);
+                t->tm_min  = bcd2int (m147_rtc->bcd_min);
+                t->tm_sec  = bcd2int (m147_rtc->bcd_sec);
+                m147_rtc->ctrl = 0;
+        }
+        return 0;
+}
+
+int mvme147_set_clock_mmss (unsigned long nowtime)
+{
+        return 0;
+}
+
+/*-------------------  Serial console stuff ------------------------*/
+
+static void scc_delay (void)
+{
+        int n;
+        volatile int trash;
+
+        for (n = 0; n < 20; n++)
+                trash = n;
+}
+
+static void scc_write (char ch)
+{
+        volatile char *p = (volatile char *)M147_SCC_A_ADDR;
+
+        do {
+                scc_delay();
+        }
+        while (!(*p & 4));
+        scc_delay();
+        *p = 8;
+        scc_delay();
+        *p = ch;
+}
+
+
+void m147_scc_write (struct console *co, const char *str, unsigned count)
+{
+        unsigned long flags;
+
+        local_irq_save(flags);
+
+        while (count--)
+        {
+                if (*str == '\n')
+                        scc_write ('\r');
+                scc_write (*str++);
+        }
+        local_irq_restore(flags);
+}
+
+void mvme147_init_console_port (struct console *co, int cflag)
+{
+        co->write    = m147_scc_write;
+}