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, 58 insertions, 0 deletions

diff --git a/arch/m68k/kernel/irq.c b/arch/m68k/kernel/irq.c
new file mode 100644
index 0000000..c7dd48f
--- /dev/null
+++ b/arch/m68k/kernel/irq.c
@@ -0,0 +1,58 @@
+/*
+ * irq.c
+ *
+ * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/kernel_stat.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <asm/system.h>
+#include <asm/traps.h>
+
+asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
+{
+	struct pt_regs *oldregs = set_irq_regs(regs);
+
+	irq_enter();
+	generic_handle_irq(irq);
+	irq_exit();
+
+	set_irq_regs(oldregs);
+}
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+	struct irqaction *ap;
+	int irq = *((loff_t *) v);
+
+	if (irq == 0)
+		seq_puts(p, "           CPU0\n");
+
+	if (irq < NR_IRQS) {
+		struct irq_desc *desc = irq_to_desc(irq);
+
+		ap = desc->action;
+		if (ap) {
+			seq_printf(p, "%3d: ", irq);
+			seq_printf(p, "%10u ", kstat_irqs(irq));
+			seq_printf(p, "%14s  ", get_irq_desc_chip(desc)->name);
+
+			seq_printf(p, "%s", ap->name);
+			for (ap = ap->next; ap; ap = ap->next)
+				seq_printf(p, ", %s", ap->name);
+			seq_putc(p, '\n');
+		}
+	}
+
+	return 0;
+}
+