powerpc: Remove arch/ppc and include/asm-ppc

All the maintained platforms are now in arch/powerpc, so the old
arch/ppc stuff can now go away.

Acked-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Becky Bruce <becky.bruce@freescale.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jochen Friedrich <jochen@scram.de>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Scott Wood <scottwood@freescale.com>
Acked-by: Sean MacLennan <smaclennan@pikatech.com>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 603 deletions

diff --git a/arch/ppc/mm/init.c b/arch/ppc/mm/init.c
deleted file mode 100644
index 1a63711081b5..000000000000
--- a/arch/ppc/mm/init.c
+++ /dev/null
@@ -1,603 +0,0 @@
-/*
- *  PowerPC version
- *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- *  Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
- *  and Cort Dougan (PReP) (cort@cs.nmt.edu)
- *    Copyright (C) 1996 Paul Mackerras
- *  Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk).
- *  PPC44x/36-bit changes by Matt Porter (mporter@mvista.com)
- *
- *  Derived from "arch/i386/mm/init.c"
- *    Copyright (C) 1991, 1992, 1993, 1994  Linus Torvalds
- *
- *  This program is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU General Public License
- *  as published by the Free Software Foundation; either version
- *  2 of the License, or (at your option) any later version.
- *
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/highmem.h>
-#include <linux/initrd.h>
-#include <linux/pagemap.h>
-
-#include <asm/pgalloc.h>
-#include <asm/prom.h>
-#include <asm/io.h>
-#include <asm/mmu_context.h>
-#include <asm/pgtable.h>
-#include <asm/mmu.h>
-#include <asm/smp.h>
-#include <asm/machdep.h>
-#include <asm/btext.h>
-#include <asm/tlb.h>
-#include <asm/bootinfo.h>
-
-#include "mem_pieces.h"
-#include "mmu_decl.h"
-
-#if defined(CONFIG_KERNEL_START_BOOL) || defined(CONFIG_LOWMEM_SIZE_BOOL)
-/* The amount of lowmem must be within 0xF0000000 - KERNELBASE. */
-#if (CONFIG_LOWMEM_SIZE > (0xF0000000 - KERNELBASE))
-#error "You must adjust CONFIG_LOWMEM_SIZE or CONFIG_START_KERNEL"
-#endif
-#endif
-#define MAX_LOW_MEM	CONFIG_LOWMEM_SIZE
-
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-
-unsigned long total_memory;
-unsigned long total_lowmem;
-
-unsigned long ppc_memstart;
-unsigned long ppc_memoffset = PAGE_OFFSET;
-
-int mem_init_done;
-int init_bootmem_done;
-int boot_mapsize;
-
-extern char _end[];
-extern char etext[], _stext[];
-extern char __init_begin, __init_end;
-
-#ifdef CONFIG_HIGHMEM
-pte_t *kmap_pte;
-pgprot_t kmap_prot;
-
-EXPORT_SYMBOL(kmap_prot);
-EXPORT_SYMBOL(kmap_pte);
-#endif
-
-void MMU_init(void);
-void set_phys_avail(unsigned long total_ram);
-
-/* XXX should be in current.h  -- paulus */
-extern struct task_struct *current_set[NR_CPUS];
-
-char *klimit = _end;
-struct mem_pieces phys_avail;
-
-/*
- * this tells the system to map all of ram with the segregs
- * (i.e. page tables) instead of the bats.
- * -- Cort
- */
-int __map_without_bats;
-int __map_without_ltlbs;
-
-/* max amount of RAM to use */
-unsigned long __max_memory;
-/* max amount of low RAM to map in */
-unsigned long __max_low_memory = MAX_LOW_MEM;
-
-void show_mem(void)
-{
-	int i,free = 0,total = 0,reserved = 0;
-	int shared = 0, cached = 0;
-	int highmem = 0;
-
-	printk("Mem-info:\n");
-	show_free_areas();
-	i = max_mapnr;
-	while (i-- > 0) {
-		total++;
-		if (PageHighMem(mem_map+i))
-			highmem++;
-		if (PageReserved(mem_map+i))
-			reserved++;
-		else if (PageSwapCache(mem_map+i))
-			cached++;
-		else if (!page_count(mem_map+i))
-			free++;
-		else
-			shared += page_count(mem_map+i) - 1;
-	}
-	printk("%d pages of RAM\n",total);
-	printk("%d pages of HIGHMEM\n", highmem);
-	printk("%d free pages\n",free);
-	printk("%d reserved pages\n",reserved);
-	printk("%d pages shared\n",shared);
-	printk("%d pages swap cached\n",cached);
-}
-
-/* Free up now-unused memory */
-static void free_sec(unsigned long start, unsigned long end, const char *name)
-{
-	unsigned long cnt = 0;
-
-	while (start < end) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page(start);
-		cnt++;
-		start += PAGE_SIZE;
- 	}
-	if (cnt) {
-		printk(" %ldk %s", cnt << (PAGE_SHIFT - 10), name);
-		totalram_pages += cnt;
-	}
-}
-
-void free_initmem(void)
-{
-#define FREESEC(TYPE) \
-	free_sec((unsigned long)(&__ ## TYPE ## _begin), \
-		 (unsigned long)(&__ ## TYPE ## _end), \
-		 #TYPE);
-
-	printk ("Freeing unused kernel memory:");
-	FREESEC(init);
- 	printk("\n");
-	ppc_md.progress = NULL;
-#undef FREESEC
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-	printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
-
-	for (; start < end; start += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page(start);
-		totalram_pages++;
-	}
-}
-#endif
-
-/*
- * Check for command-line options that affect what MMU_init will do.
- */
-void MMU_setup(void)
-{
-	/* Check for nobats option (used in mapin_ram). */
-	if (strstr(cmd_line, "nobats")) {
-		__map_without_bats = 1;
-	}
-
-	if (strstr(cmd_line, "noltlbs")) {
-		__map_without_ltlbs = 1;
-	}
-
-	/* Look for mem= option on command line */
-	if (strstr(cmd_line, "mem=")) {
-		char *p, *q;
-		unsigned long maxmem = 0;
-
-		for (q = cmd_line; (p = strstr(q, "mem=")) != 0; ) {
-			q = p + 4;
-			if (p > cmd_line && p[-1] != ' ')
-				continue;
-			maxmem = simple_strtoul(q, &q, 0);
-			if (*q == 'k' || *q == 'K') {
-				maxmem <<= 10;
-				++q;
-			} else if (*q == 'm' || *q == 'M') {
-				maxmem <<= 20;
-				++q;
-			}
-		}
-		__max_memory = maxmem;
-	}
-}
-
-/*
- * MMU_init sets up the basic memory mappings for the kernel,
- * including both RAM and possibly some I/O regions,
- * and sets up the page tables and the MMU hardware ready to go.
- */
-void __init MMU_init(void)
-{
-	if (ppc_md.progress)
-		ppc_md.progress("MMU:enter", 0x111);
-
-	/* parse args from command line */
-	MMU_setup();
-
-	/*
-	 * Figure out how much memory we have, how much
-	 * is lowmem, and how much is highmem.  If we were
-	 * passed the total memory size from the bootloader,
-	 * just use it.
-	 */
-	if (boot_mem_size)
-		total_memory = boot_mem_size;
-	else
-		total_memory = ppc_md.find_end_of_memory();
-
-	if (__max_memory && total_memory > __max_memory)
-		total_memory = __max_memory;
-	total_lowmem = total_memory;
-	if (total_lowmem > __max_low_memory) {
-		total_lowmem = __max_low_memory;
-#ifndef CONFIG_HIGHMEM
-		total_memory = total_lowmem;
-#endif /* CONFIG_HIGHMEM */
-	}
-	set_phys_avail(total_lowmem);
-
-	/* Initialize the MMU hardware */
-	if (ppc_md.progress)
-		ppc_md.progress("MMU:hw init", 0x300);
-	MMU_init_hw();
-
-	/* Map in all of RAM starting at KERNELBASE */
-	if (ppc_md.progress)
-		ppc_md.progress("MMU:mapin", 0x301);
-	mapin_ram();
-
-#ifdef CONFIG_HIGHMEM
-	ioremap_base = PKMAP_BASE;
-#else
-	ioremap_base = 0xfe000000UL;	/* for now, could be 0xfffff000 */
-#endif /* CONFIG_HIGHMEM */
-	ioremap_bot = ioremap_base;
-
-	/* Map in I/O resources */
-	if (ppc_md.progress)
-		ppc_md.progress("MMU:setio", 0x302);
-	if (ppc_md.setup_io_mappings)
-		ppc_md.setup_io_mappings();
-
-	/* Initialize the context management stuff */
-	mmu_context_init();
-
-	if (ppc_md.progress)
-		ppc_md.progress("MMU:exit", 0x211);
-
-#ifdef CONFIG_BOOTX_TEXT
-	/* By default, we are no longer mapped */
-       	boot_text_mapped = 0;
-	/* Must be done last, or ppc_md.progress will die. */
-	map_boot_text();
-#endif
-}
-
-/* This is only called until mem_init is done. */
-void __init *early_get_page(void)
-{
-	void *p;
-
-	if (init_bootmem_done) {
-		p = alloc_bootmem_pages(PAGE_SIZE);
-	} else {
-		p = mem_pieces_find(PAGE_SIZE, PAGE_SIZE);
-	}
-	return p;
-}
-
-/*
- * Initialize the bootmem system and give it all the memory we
- * have available.
- */
-void __init do_init_bootmem(void)
-{
-	unsigned long start, size;
-	int i;
-
-	/*
-	 * Find an area to use for the bootmem bitmap.
-	 * We look for the first area which is at least
-	 * 128kB in length (128kB is enough for a bitmap
-	 * for 4GB of memory, using 4kB pages), plus 1 page
-	 * (in case the address isn't page-aligned).
-	 */
-	start = 0;
-	size = 0;
-	for (i = 0; i < phys_avail.n_regions; ++i) {
-		unsigned long a = phys_avail.regions[i].address;
-		unsigned long s = phys_avail.regions[i].size;
-		if (s <= size)
-			continue;
-		start = a;
-		size = s;
-		if (s >= 33 * PAGE_SIZE)
-			break;
-	}
-	start = PAGE_ALIGN(start);
-
-	min_low_pfn = start >> PAGE_SHIFT;
-	max_low_pfn = (PPC_MEMSTART + total_lowmem) >> PAGE_SHIFT;
-	max_pfn = (PPC_MEMSTART + total_memory) >> PAGE_SHIFT;
-	boot_mapsize = init_bootmem_node(&contig_page_data, min_low_pfn,
-					 PPC_MEMSTART >> PAGE_SHIFT,
-					 max_low_pfn);
-
-	/* remove the bootmem bitmap from the available memory */
-	mem_pieces_remove(&phys_avail, start, boot_mapsize, 1);
-
-	/* add everything in phys_avail into the bootmem map */
-	for (i = 0; i < phys_avail.n_regions; ++i)
-		free_bootmem(phys_avail.regions[i].address,
-			     phys_avail.regions[i].size);
-
-	init_bootmem_done = 1;
-}
-
-/*
- * paging_init() sets up the page tables - in fact we've already done this.
- */
-void __init paging_init(void)
-{
-	unsigned long start_pfn, end_pfn;
-	unsigned long max_zone_pfns[MAX_NR_ZONES];
-#ifdef CONFIG_HIGHMEM
-	map_page(PKMAP_BASE, 0, 0);	/* XXX gross */
-	pkmap_page_table = pte_offset_kernel(pmd_offset(pgd_offset_k
-			(PKMAP_BASE), PKMAP_BASE), PKMAP_BASE);
-	map_page(KMAP_FIX_BEGIN, 0, 0);	/* XXX gross */
-	kmap_pte = pte_offset_kernel(pmd_offset(pgd_offset_k
-			(KMAP_FIX_BEGIN), KMAP_FIX_BEGIN), KMAP_FIX_BEGIN);
-	kmap_prot = PAGE_KERNEL;
-#endif /* CONFIG_HIGHMEM */
-	/* All pages are DMA-able so we put them all in the DMA zone. */
-	start_pfn = __pa(PAGE_OFFSET) >> PAGE_SHIFT;
-	end_pfn = start_pfn + (total_memory >> PAGE_SHIFT);
-	add_active_range(0, start_pfn, end_pfn);
-
-	memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
-#ifdef CONFIG_HIGHMEM
-	max_zone_pfns[ZONE_DMA] = total_lowmem >> PAGE_SHIFT;
-	max_zone_pfns[ZONE_HIGHMEM] = total_memory >> PAGE_SHIFT;
-#else
-	max_zone_pfns[ZONE_DMA] = total_memory >> PAGE_SHIFT;
-#endif /* CONFIG_HIGHMEM */
-	free_area_init_nodes(max_zone_pfns);
-}
-
-void __init mem_init(void)
-{
-	unsigned long addr;
-	int codepages = 0;
-	int datapages = 0;
-	int initpages = 0;
-#ifdef CONFIG_HIGHMEM
-	unsigned long highmem_mapnr;
-
-	highmem_mapnr = total_lowmem >> PAGE_SHIFT;
-#endif /* CONFIG_HIGHMEM */
-	max_mapnr = total_memory >> PAGE_SHIFT;
-
-	high_memory = (void *) __va(PPC_MEMSTART + total_lowmem);
-	num_physpages = max_mapnr;	/* RAM is assumed contiguous */
-
-	totalram_pages += free_all_bootmem();
-
-#ifdef CONFIG_BLK_DEV_INITRD
-	/* if we are booted from BootX with an initial ramdisk,
-	   make sure the ramdisk pages aren't reserved. */
-	if (initrd_start) {
-		for (addr = initrd_start; addr < initrd_end; addr += PAGE_SIZE)
-			ClearPageReserved(virt_to_page(addr));
-	}
-#endif /* CONFIG_BLK_DEV_INITRD */
-
-	for (addr = PAGE_OFFSET; addr < (unsigned long)high_memory;
-	     addr += PAGE_SIZE) {
-		if (!PageReserved(virt_to_page(addr)))
-			continue;
-		if (addr < (ulong) etext)
-			codepages++;
-		else if (addr >= (unsigned long)&__init_begin
-			 && addr < (unsigned long)&__init_end)
-			initpages++;
-		else if (addr < (ulong) klimit)
-			datapages++;
-	}
-
-#ifdef CONFIG_HIGHMEM
-	{
-		unsigned long pfn;
-
-		for (pfn = highmem_mapnr; pfn < max_mapnr; ++pfn) {
-			struct page *page = mem_map + pfn;
-
-			ClearPageReserved(page);
-			init_page_count(page);
-			__free_page(page);
-			totalhigh_pages++;
-		}
-		totalram_pages += totalhigh_pages;
-	}
-#endif /* CONFIG_HIGHMEM */
-
-        printk("Memory: %luk available (%dk kernel code, %dk data, %dk init, %ldk highmem)\n",
-	       (unsigned long)nr_free_pages()<< (PAGE_SHIFT-10),
-	       codepages<< (PAGE_SHIFT-10), datapages<< (PAGE_SHIFT-10),
-	       initpages<< (PAGE_SHIFT-10),
-	       (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10)));
-
-	mem_init_done = 1;
-}
-
-/*
- * Set phys_avail to the amount of physical memory,
- * less the kernel text/data/bss.
- */
-void __init
-set_phys_avail(unsigned long total_memory)
-{
-	unsigned long kstart, ksize;
-
-	/*
-	 * Initially, available physical memory is equivalent to all
-	 * physical memory.
-	 */
-
-	phys_avail.regions[0].address = PPC_MEMSTART;
-	phys_avail.regions[0].size = total_memory;
-	phys_avail.n_regions = 1;
-
-	/*
-	 * Map out the kernel text/data/bss from the available physical
-	 * memory.
-	 */
-
-	kstart = __pa(_stext);	/* should be 0 */
-	ksize = PAGE_ALIGN(klimit - _stext);
-
-	mem_pieces_remove(&phys_avail, kstart, ksize, 0);
-	mem_pieces_remove(&phys_avail, 0, 0x4000, 0);
-
-#if defined(CONFIG_BLK_DEV_INITRD)
-	/* Remove the init RAM disk from the available memory. */
-	if (initrd_start) {
-		mem_pieces_remove(&phys_avail, __pa(initrd_start),
-				  initrd_end - initrd_start, 1);
-	}
-#endif /* CONFIG_BLK_DEV_INITRD */
-}
-
-/* Mark some memory as reserved by removing it from phys_avail. */
-void __init reserve_phys_mem(unsigned long start, unsigned long size)
-{
-	mem_pieces_remove(&phys_avail, start, size, 1);
-}
-
-/*
- * This is called when a page has been modified by the kernel.
- * It just marks the page as not i-cache clean.  We do the i-cache
- * flush later when the page is given to a user process, if necessary.
- */
-void flush_dcache_page(struct page *page)
-{
-	clear_bit(PG_arch_1, &page->flags);
-}
-
-void flush_dcache_icache_page(struct page *page)
-{
-#ifdef CONFIG_BOOKE
-	void *start = kmap_atomic(page, KM_PPC_SYNC_ICACHE);
-	__flush_dcache_icache(start);
-	kunmap_atomic(start, KM_PPC_SYNC_ICACHE);
-#elif defined(CONFIG_8xx)
-	/* On 8xx there is no need to kmap since highmem is not supported */
-	__flush_dcache_icache(page_address(page)); 
-#else
-	__flush_dcache_icache_phys(page_to_pfn(page) << PAGE_SHIFT);
-#endif
-
-}
-void clear_user_page(void *page, unsigned long vaddr, struct page *pg)
-{
-	clear_page(page);
-	clear_bit(PG_arch_1, &pg->flags);
-}
-
-void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
-		    struct page *pg)
-{
-	copy_page(vto, vfrom);
-	clear_bit(PG_arch_1, &pg->flags);
-}
-
-void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
-			     unsigned long addr, int len)
-{
-	unsigned long maddr;
-
-	maddr = (unsigned long) kmap(page) + (addr & ~PAGE_MASK);
-	flush_icache_range(maddr, maddr + len);
-	kunmap(page);
-}
-
-/*
- * This is called at the end of handling a user page fault, when the
- * fault has been handled by updating a PTE in the linux page tables.
- * We use it to preload an HPTE into the hash table corresponding to
- * the updated linux PTE.
- */
-void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
-		      pte_t pte)
-{
-	/* handle i-cache coherency */
-	unsigned long pfn = pte_pfn(pte);
-
-	if (pfn_valid(pfn)) {
-		struct page *page = pfn_to_page(pfn);
-#ifdef CONFIG_8xx
-		/* On 8xx, the TLB handlers work in 2 stages:
-	 	 * First, a zeroed entry is loaded by TLBMiss handler,
-		 * which causes the TLBError handler to be triggered.
-		 * That means the zeroed TLB has to be invalidated
-		 * whenever a page miss occurs.
-		 */
-		_tlbie(address, 0 /* 8xx doesn't care about PID */);
-#endif
-		if (!PageReserved(page)
-		    && !test_bit(PG_arch_1, &page->flags)) {
-			if (vma->vm_mm == current->active_mm)
-				__flush_dcache_icache((void *) address);
-			else
-				flush_dcache_icache_page(page);
-			set_bit(PG_arch_1, &page->flags);
-		}
-	}
-
-#ifdef CONFIG_PPC_STD_MMU
-	/* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */
-	if (Hash != 0 && pte_young(pte)) {
-		struct mm_struct *mm;
-		pmd_t *pmd;
-
-		mm = (address < TASK_SIZE)? vma->vm_mm: &init_mm;
-		pmd = pmd_offset(pgd_offset(mm, address), address);
-		if (!pmd_none(*pmd))
-			add_hash_page(mm->context.id, address, pmd_val(*pmd));
-	}
-#endif
-}
-
-/*
- * This is called by /dev/mem to know if a given address has to
- * be mapped non-cacheable or not
- */
-int page_is_ram(unsigned long pfn)
-{
-	return pfn < max_pfn;
-}
-
-pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
-			      unsigned long size, pgprot_t vma_prot)
-{
-	if (ppc_md.phys_mem_access_prot)
-		return ppc_md.phys_mem_access_prot(file, pfn, size, vma_prot);
-
-	if (!page_is_ram(pfn))
-		vma_prot = __pgprot(pgprot_val(vma_prot)
-				    | _PAGE_GUARDED | _PAGE_NO_CACHE);
-	return vma_prot;
-}
-EXPORT_SYMBOL(phys_mem_access_prot);