m68k: merge m68k and m68knommu arch directories

There is a lot of common code that could be shared between the m68k
and m68knommu arch branches. It makes sense to merge the two branches
into a single directory structure so that we can more easily share
that common code.

This is a brute force merge, based on a script from Stephen King
<sfking@fdwdc.com>, which was originally written by Arnd Bergmann
<arnd@arndb.de>.

> The script was inspired by the script Sam Ravnborg used to merge the
> includes from m68knommu. For those files common to both arches but
> differing in content, the m68k version of the file is renamed to
> <file>_mm.<ext> and the m68knommu version of the file is moved into the
> corresponding m68k directory and renamed <file>_no.<ext> and a small
> wrapper file <file>.<ext> is used to select between the two version. Files
> that are common to both but don't differ are removed from the m68knommu
> tree and files and directories that are unique to the m68knommu tree are
> moved to the m68k tree. Finally, the arch/m68knommu tree is removed.
>
> To select between the the versions of the files, the wrapper uses
>
> #ifdef CONFIG_MMU
> #include <file>_mm.<ext>
> #else
> #include <file>_no.<ext>
> #endif

On top of this file merge I have done a simplistic merge of m68k and
m68knommu Kconfig, which primarily attempts to keep existing options and
menus in place. Other than a handful of options being moved it produces
identical .config outputs on m68k and m68knommu targets I tested it on.

With this in place there is now quite a bit of scope for merge cleanups
in future patches.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>

1 files changed, 0 insertions, 169 deletions

diff --git a/arch/m68knommu/platform/coldfire/pit.c b/arch/m68knommu/platform/coldfire/pit.c
deleted file mode 100644
index c2b980926bec..000000000000
--- a/arch/m68knommu/platform/coldfire/pit.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/***************************************************************************/
-
-/*
- *	pit.c -- Freescale ColdFire PIT timer. Currently this type of
- *	         hardware timer only exists in the Freescale ColdFire
- *		 5270/5271, 5282 and 5208 CPUs. No doubt newer ColdFire
- *		 family members will probably use it too.
- *
- *	Copyright (C) 1999-2008, Greg Ungerer (gerg@snapgear.com)
- *	Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com)
- */
-
-/***************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/param.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/clockchips.h>
-#include <asm/machdep.h>
-#include <asm/io.h>
-#include <asm/coldfire.h>
-#include <asm/mcfpit.h>
-#include <asm/mcfsim.h>
-
-/***************************************************************************/
-
-/*
- *	By default use timer1 as the system clock timer.
- */
-#define	FREQ	((MCF_CLK / 2) / 64)
-#define	TA(a)	(MCFPIT_BASE1 + (a))
-#define PIT_CYCLES_PER_JIFFY (FREQ / HZ)
-
-static u32 pit_cnt;
-
-/*
- * Initialize the PIT timer.
- *
- * This is also called after resume to bring the PIT into operation again.
- */
-
-static void init_cf_pit_timer(enum clock_event_mode mode,
-                             struct clock_event_device *evt)
-{
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-
-		__raw_writew(MCFPIT_PCSR_DISABLE, TA(MCFPIT_PCSR));
-		__raw_writew(PIT_CYCLES_PER_JIFFY, TA(MCFPIT_PMR));
-		__raw_writew(MCFPIT_PCSR_EN | MCFPIT_PCSR_PIE | \
-				MCFPIT_PCSR_OVW | MCFPIT_PCSR_RLD | \
-				MCFPIT_PCSR_CLK64, TA(MCFPIT_PCSR));
-		break;
-
-	case CLOCK_EVT_MODE_SHUTDOWN:
-	case CLOCK_EVT_MODE_UNUSED:
-
-		__raw_writew(MCFPIT_PCSR_DISABLE, TA(MCFPIT_PCSR));
-		break;
-
-	case CLOCK_EVT_MODE_ONESHOT:
-
-		__raw_writew(MCFPIT_PCSR_DISABLE, TA(MCFPIT_PCSR));
-		__raw_writew(MCFPIT_PCSR_EN | MCFPIT_PCSR_PIE | \
-				MCFPIT_PCSR_OVW | MCFPIT_PCSR_CLK64, \
-				TA(MCFPIT_PCSR));
-		break;
-
-	case CLOCK_EVT_MODE_RESUME:
-		/* Nothing to do here */
-		break;
-	}
-}
-
-/*
- * Program the next event in oneshot mode
- *
- * Delta is given in PIT ticks
- */
-static int cf_pit_next_event(unsigned long delta,
-		struct clock_event_device *evt)
-{
-	__raw_writew(delta, TA(MCFPIT_PMR));
-	return 0;
-}
-
-struct clock_event_device cf_pit_clockevent = {
-	.name		= "pit",
-	.features	= CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-	.set_mode	= init_cf_pit_timer,
-	.set_next_event	= cf_pit_next_event,
-	.shift		= 32,
-	.irq		= MCFINT_VECBASE + MCFINT_PIT1,
-};
-
-
-
-/***************************************************************************/
-
-static irqreturn_t pit_tick(int irq, void *dummy)
-{
-	struct clock_event_device *evt = &cf_pit_clockevent;
-	u16 pcsr;
-
-	/* Reset the ColdFire timer */
-	pcsr = __raw_readw(TA(MCFPIT_PCSR));
-	__raw_writew(pcsr | MCFPIT_PCSR_PIF, TA(MCFPIT_PCSR));
-
-	pit_cnt += PIT_CYCLES_PER_JIFFY;
-	evt->event_handler(evt);
-	return IRQ_HANDLED;
-}
-
-/***************************************************************************/
-
-static struct irqaction pit_irq = {
-	.name	 = "timer",
-	.flags	 = IRQF_DISABLED | IRQF_TIMER,
-	.handler = pit_tick,
-};
-
-/***************************************************************************/
-
-static cycle_t pit_read_clk(struct clocksource *cs)
-{
-	unsigned long flags;
-	u32 cycles;
-	u16 pcntr;
-
-	local_irq_save(flags);
-	pcntr = __raw_readw(TA(MCFPIT_PCNTR));
-	cycles = pit_cnt;
-	local_irq_restore(flags);
-
-	return cycles + PIT_CYCLES_PER_JIFFY - pcntr;
-}
-
-/***************************************************************************/
-
-static struct clocksource pit_clk = {
-	.name	= "pit",
-	.rating	= 100,
-	.read	= pit_read_clk,
-	.shift	= 20,
-	.mask	= CLOCKSOURCE_MASK(32),
-};
-
-/***************************************************************************/
-
-void hw_timer_init(void)
-{
-	cf_pit_clockevent.cpumask = cpumask_of(smp_processor_id());
-	cf_pit_clockevent.mult = div_sc(FREQ, NSEC_PER_SEC, 32);
-	cf_pit_clockevent.max_delta_ns =
-		clockevent_delta2ns(0xFFFF, &cf_pit_clockevent);
-	cf_pit_clockevent.min_delta_ns =
-		clockevent_delta2ns(0x3f, &cf_pit_clockevent);
-	clockevents_register_device(&cf_pit_clockevent);
-
-	setup_irq(MCFINT_VECBASE + MCFINT_PIT1, &pit_irq);
-
-	pit_clk.mult = clocksource_hz2mult(FREQ, pit_clk.shift);
-	clocksource_register(&pit_clk);
-}
-
-/***************************************************************************/