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>

3 files changed, 0 insertions, 243 deletions

diff --git a/arch/m68knommu/mm/Makefile b/arch/m68knommu/mm/Makefile
deleted file mode 100644
index b54ab6b4b523..000000000000
--- a/arch/m68knommu/mm/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-#
-# Makefile for the linux m68knommu specific parts of the memory manager.
-#
-
-obj-y += init.o kmap.o
diff --git a/arch/m68knommu/mm/init.c b/arch/m68knommu/mm/init.c
deleted file mode 100644
index 8a6653f56bd8..000000000000
--- a/arch/m68knommu/mm/init.c
+++ /dev/null
@@ -1,193 +0,0 @@
-/*
- *  linux/arch/m68knommu/mm/init.c
- *
- *  Copyright (C) 1998  D. Jeff Dionne <jeff@lineo.ca>,
- *                      Kenneth Albanowski <kjahds@kjahds.com>,
- *  Copyright (C) 2000  Lineo, Inc.  (www.lineo.com) 
- *
- *  Based on:
- *
- *  linux/arch/m68k/mm/init.c
- *
- *  Copyright (C) 1995  Hamish Macdonald
- *
- *  JAN/1999 -- hacked to support ColdFire (gerg@snapgear.com)
- *  DEC/2000 -- linux 2.4 support <davidm@snapgear.com>
- */
-
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/init.h>
-#include <linux/highmem.h>
-#include <linux/pagemap.h>
-#include <linux/bootmem.h>
-#include <linux/gfp.h>
-
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/machdep.h>
-
-#undef DEBUG
-
-extern void die_if_kernel(char *,struct pt_regs *,long);
-extern void free_initmem(void);
-
-/*
- * BAD_PAGE is the page that is used for page faults when linux
- * is out-of-memory. Older versions of linux just did a
- * do_exit(), but using this instead means there is less risk
- * for a process dying in kernel mode, possibly leaving a inode
- * unused etc..
- *
- * BAD_PAGETABLE is the accompanying page-table: it is initialized
- * to point to BAD_PAGE entries.
- *
- * ZERO_PAGE is a special page that is used for zero-initialized
- * data and COW.
- */
-static unsigned long empty_bad_page_table;
-
-static unsigned long empty_bad_page;
-
-unsigned long empty_zero_page;
-
-extern unsigned long memory_start;
-extern unsigned long memory_end;
-
-/*
- * paging_init() continues the virtual memory environment setup which
- * was begun by the code in arch/head.S.
- * The parameters are pointers to where to stick the starting and ending
- * addresses of available kernel virtual memory.
- */
-void __init paging_init(void)
-{
-        /*
-         * Make sure start_mem is page aligned, otherwise bootmem and
-         * page_alloc get different views of the world.
-         */
-#ifdef DEBUG
-        unsigned long start_mem = PAGE_ALIGN(memory_start);
-#endif
-        unsigned long end_mem   = memory_end & PAGE_MASK;
-
-#ifdef DEBUG
-        printk (KERN_DEBUG "start_mem is %#lx\nvirtual_end is %#lx\n",
-                start_mem, end_mem);
-#endif
-
-        /*
-         * Initialize the bad page table and bad page to point
-         * to a couple of allocated pages.
-         */
-        empty_bad_page_table = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
-        empty_bad_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
-        empty_zero_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
-        memset((void *)empty_zero_page, 0, PAGE_SIZE);
-
-        /*
-         * Set up SFC/DFC registers (user data space).
-         */
-        set_fs (USER_DS);
-
-#ifdef DEBUG
-        printk (KERN_DEBUG "before free_area_init\n");
-
-        printk (KERN_DEBUG "free_area_init -> start_mem is %#lx\nvirtual_end is %#lx\n",
-                start_mem, end_mem);
-#endif
-
-        {
-                unsigned long zones_size[MAX_NR_ZONES] = {0, };
-
-                zones_size[ZONE_DMA] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT;
-                free_area_init(zones_size);
-        }
-}
-
-void __init mem_init(void)
-{
-        int codek = 0, datak = 0, initk = 0;
-        unsigned long tmp;
-        extern char _etext, _stext, _sdata, _ebss, __init_begin, __init_end;
-        extern unsigned int _ramend, _rambase;
-        unsigned long len = _ramend - _rambase;
-        unsigned long start_mem = memory_start; /* DAVIDM - these must start at end of kernel */
-        unsigned long end_mem   = memory_end; /* DAVIDM - this must not include kernel stack at top */
-
-        pr_debug("Mem_init: start=%lx, end=%lx\n", start_mem, end_mem);
-
-        end_mem &= PAGE_MASK;
-        high_memory = (void *) end_mem;
-
-        start_mem = PAGE_ALIGN(start_mem);
-        max_mapnr = num_physpages = (((unsigned long) high_memory) - PAGE_OFFSET) >> PAGE_SHIFT;
-
-        /* this will put all memory onto the freelists */
-        totalram_pages = free_all_bootmem();
-
-        codek = (&_etext - &_stext) >> 10;
-        datak = (&_ebss - &_sdata) >> 10;
-        initk = (&__init_begin - &__init_end) >> 10;
-
-        tmp = nr_free_pages() << PAGE_SHIFT;
-        printk(KERN_INFO "Memory available: %luk/%luk RAM, (%dk kernel code, %dk data)\n",
-               tmp >> 10,
-               len >> 10,
-               codek,
-               datak
-               );
-}
-
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-        int pages = 0;
-        for (; start < end; start += PAGE_SIZE) {
-                ClearPageReserved(virt_to_page(start));
-                init_page_count(virt_to_page(start));
-                free_page(start);
-                totalram_pages++;
-                pages++;
-        }
-        printk (KERN_NOTICE "Freeing initrd memory: %dk freed\n", pages * (PAGE_SIZE / 1024));
-}
-#endif
-
-void
-free_initmem()
-{
-#ifdef CONFIG_RAMKERNEL
-        unsigned long addr;
-        extern char __init_begin, __init_end;
-        /*
-         * The following code should be cool even if these sections
-         * are not page aligned.
-         */
-        addr = PAGE_ALIGN((unsigned long)(&__init_begin));
-        /* next to check that the page we free is not a partial page */
-        for (; addr + PAGE_SIZE < (unsigned long)(&__init_end); addr +=PAGE_SIZE) {
-                ClearPageReserved(virt_to_page(addr));
-                init_page_count(virt_to_page(addr));
-                free_page(addr);
-                totalram_pages++;
-        }
-        printk(KERN_NOTICE "Freeing unused kernel memory: %ldk freed (0x%x - 0x%x)\n",
-                        (addr - PAGE_ALIGN((long) &__init_begin)) >> 10,
-                        (int)(PAGE_ALIGN((unsigned long)(&__init_begin))),
-                        (int)(addr - PAGE_SIZE));
-#endif
-}
-
diff --git a/arch/m68knommu/mm/kmap.c b/arch/m68knommu/mm/kmap.c
deleted file mode 100644
index ece8d5ad4e6c..000000000000
--- a/arch/m68knommu/mm/kmap.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- *  linux/arch/m68knommu/mm/kmap.c
- *
- *  Copyright (C) 2000 Lineo, <davidm@snapgear.com>
- *  Copyright (C) 2000-2002 David McCullough <davidm@snapgear.com>
- */
-
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/vmalloc.h>
-
-#include <asm/setup.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/io.h>
-#include <asm/system.h>
-
-#undef DEBUG
-
-/*
- * Map some physical address range into the kernel address space.
- */
-void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag)
-{
-        return (void *)physaddr;
-}
-
-/*
- * Unmap a ioremap()ed region again.
- */
-void iounmap(void *addr)
-{
-}
-
-/*
- * Set new cache mode for some kernel address space.
- * The caller must push data for that range itself, if such data may already
- * be in the cache.
- */
-void kernel_set_cachemode(void *addr, unsigned long size, int cmode)
-{
-}