mirror of
https://github.com/torvalds/linux.git
synced 2024-11-01 01:31:44 +00:00
7c0f6ba682
This was entirely automated, using the script by Al:
PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
$(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)
to do the replacement at the end of the merge window.
Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/* MN10300 Memory management initialisation
|
|
*
|
|
* Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
|
* Modified by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
#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/fs.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/swap.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/init.h>
|
|
#include <linux/initrd.h>
|
|
#include <linux/highmem.h>
|
|
#include <linux/pagemap.h>
|
|
#include <linux/bootmem.h>
|
|
#include <linux/gfp.h>
|
|
|
|
#include <asm/processor.h>
|
|
#include <linux/uaccess.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/pgalloc.h>
|
|
#include <asm/dma.h>
|
|
#include <asm/tlb.h>
|
|
#include <asm/sections.h>
|
|
|
|
unsigned long highstart_pfn, highend_pfn;
|
|
|
|
#ifdef CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
|
|
static struct vm_struct user_iomap_vm;
|
|
#endif
|
|
|
|
/*
|
|
* set up paging
|
|
*/
|
|
void __init paging_init(void)
|
|
{
|
|
unsigned long zones_size[MAX_NR_ZONES] = {0,};
|
|
pte_t *ppte;
|
|
int loop;
|
|
|
|
/* main kernel space -> RAM mapping is handled as 1:1 transparent by
|
|
* the MMU */
|
|
memset(swapper_pg_dir, 0, sizeof(swapper_pg_dir));
|
|
memset(kernel_vmalloc_ptes, 0, sizeof(kernel_vmalloc_ptes));
|
|
|
|
/* load the VMALLOC area PTE table addresses into the kernel PGD */
|
|
ppte = kernel_vmalloc_ptes;
|
|
for (loop = VMALLOC_START / (PAGE_SIZE * PTRS_PER_PTE);
|
|
loop < VMALLOC_END / (PAGE_SIZE * PTRS_PER_PTE);
|
|
loop++
|
|
) {
|
|
set_pgd(swapper_pg_dir + loop, __pgd(__pa(ppte) | _PAGE_TABLE));
|
|
ppte += PAGE_SIZE / sizeof(pte_t);
|
|
}
|
|
|
|
/* declare the sizes of the RAM zones (only use the normal zone) */
|
|
zones_size[ZONE_NORMAL] =
|
|
contig_page_data.bdata->node_low_pfn -
|
|
contig_page_data.bdata->node_min_pfn;
|
|
|
|
/* pass the memory from the bootmem allocator to the main allocator */
|
|
free_area_init(zones_size);
|
|
|
|
#ifdef CONFIG_MN10300_HAS_ATOMIC_OPS_UNIT
|
|
/* The Atomic Operation Unit registers need to be mapped to userspace
|
|
* for all processes. The following uses vm_area_register_early() to
|
|
* reserve the first page of the vmalloc area and sets the pte for that
|
|
* page.
|
|
*
|
|
* glibc hardcodes this virtual mapping, so we're pretty much stuck with
|
|
* it from now on.
|
|
*/
|
|
user_iomap_vm.flags = VM_USERMAP;
|
|
user_iomap_vm.size = 1 << PAGE_SHIFT;
|
|
vm_area_register_early(&user_iomap_vm, PAGE_SIZE);
|
|
ppte = kernel_vmalloc_ptes;
|
|
set_pte(ppte, pfn_pte(USER_ATOMIC_OPS_PAGE_ADDR >> PAGE_SHIFT,
|
|
PAGE_USERIO));
|
|
#endif
|
|
|
|
local_flush_tlb_all();
|
|
}
|
|
|
|
/*
|
|
* transfer all the memory from the bootmem allocator to the runtime allocator
|
|
*/
|
|
void __init mem_init(void)
|
|
{
|
|
BUG_ON(!mem_map);
|
|
|
|
#define START_PFN (contig_page_data.bdata->node_min_pfn)
|
|
#define MAX_LOW_PFN (contig_page_data.bdata->node_low_pfn)
|
|
|
|
max_mapnr = MAX_LOW_PFN - START_PFN;
|
|
high_memory = (void *) __va(MAX_LOW_PFN * PAGE_SIZE);
|
|
|
|
/* clear the zero-page */
|
|
memset(empty_zero_page, 0, PAGE_SIZE);
|
|
|
|
/* this will put all low memory onto the freelists */
|
|
free_all_bootmem();
|
|
|
|
mem_init_print_info(NULL);
|
|
}
|
|
|
|
/*
|
|
* recycle memory containing stuff only required for initialisation
|
|
*/
|
|
void free_initmem(void)
|
|
{
|
|
free_initmem_default(POISON_FREE_INITMEM);
|
|
}
|
|
|
|
/*
|
|
* dispose of the memory on which the initial ramdisk resided
|
|
*/
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
void free_initrd_mem(unsigned long start, unsigned long end)
|
|
{
|
|
free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
|
|
"initrd");
|
|
}
|
|
#endif
|