Initial import

1 files changed, 170 insertions, 0 deletions

diff --git a/arch/m68k/mvme147/config.c b/arch/m68k/mvme147/config.c
new file mode 100644
index 000000000..e6a3b56c6
--- /dev/null
+++ b/arch/m68k/mvme147/config.c
@@ -0,0 +1,170 @@
+/*
+ *  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/bootinfo-vme.h>
+#include <asm/byteorder.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>
+
+
+static void mvme147_get_model(char *model);
+extern void mvme147_sched_init(irq_handler_t handler);
+extern u32 mvme147_gettimeoffset(void);
+extern int mvme147_hwclk (int, struct rtc_time *);
+extern int mvme147_set_clock_mmss (unsigned long);
+extern void mvme147_reset (void);
+
+
+static int bcd2int (unsigned char b);
+
+/* Save tick handler routine pointer, will point to xtime_update() in
+ * kernel/time/timekeeping.c, called via mvme147_process_int() */
+
+irq_handler_t tick_handler;
+
+
+int __init mvme147_parse_bootinfo(const struct bi_record *bi)
+{
+	uint16_t tag = be16_to_cpu(bi->tag);
+	if (tag == BI_VME_TYPE || 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");
+}
+
+/*
+ * This function is called during kernel startup to initialize
+ * the mvme147 IRQ handling routines.
+ */
+
+void __init mvme147_init_IRQ(void)
+{
+	m68k_setup_user_interrupt(VEC_USER, 192);
+}
+
+void __init config_mvme147(void)
+{
+	mach_max_dma_address	= 0x01000000;
+	mach_sched_init		= mvme147_sched_init;
+	mach_init_IRQ		= mvme147_init_IRQ;
+	arch_gettimeoffset	= mvme147_gettimeoffset;
+	mach_hwclk		= mvme147_hwclk;
+	mach_set_clock_mmss	= mvme147_set_clock_mmss;
+	mach_reset		= mvme147_reset;
+	mach_get_model		= mvme147_get_model;
+
+	/* 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)
+{
+	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);
+}
+
+
+void mvme147_sched_init (irq_handler_t timer_routine)
+{
+	tick_handler = timer_routine;
+	if (request_irq(PCC_IRQ_TIMER1, mvme147_timer_int, 0, "timer 1", NULL))
+		pr_err("Couldn't register timer interrupt\n");
+
+	/* 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 */
+u32 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) * 1000;
+}
+
+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;
+}