mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 00:21:59 +00:00
002547b4f8
Majorily based on Hyok Choi's patches, this fixes up the asm-arm header files for mmuless systems. Over and above Hyok's patches: - nommu.h merged into mmu.h (it's only a structure) - nommu_context.h is essentially the same as mmu_context.h, but without the MM switching code. so there's no point having separate files. Also, in memory.h, there's no point #ifndef'ing PHYS_OFFSET and END_MEM - both CONFIG_DRAM_BASE and CONFIG_DRAM_SIZE will always be set by the configuration scripts. Other files have minor formatting changes, but are essentially the same. Hyok's original patches were signed off thusly: Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*
|
|
* linux/include/asm-arm/page-nommu.h
|
|
*
|
|
* Copyright (C) 2004 Hyok S. Choi
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#ifndef _ASMARM_PAGE_NOMMU_H
|
|
#define _ASMARM_PAGE_NOMMU_H
|
|
|
|
#if !defined(CONFIG_SMALL_TASKS) && PAGE_SHIFT < 13
|
|
#define KTHREAD_SIZE (8192)
|
|
#else
|
|
#define KTHREAD_SIZE PAGE_SIZE
|
|
#endif
|
|
|
|
#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
|
|
#define free_user_page(page, addr) free_page(addr)
|
|
|
|
#define clear_page(page) memset((page), 0, PAGE_SIZE)
|
|
#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
|
|
|
|
#define clear_user_page(page, vaddr, pg) clear_page(page)
|
|
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
|
|
|
|
/*
|
|
* These are used to make use of C type-checking..
|
|
*/
|
|
typedef unsigned long pte_t;
|
|
typedef unsigned long pmd_t;
|
|
typedef unsigned long pgd_t[2];
|
|
typedef unsigned long pgprot_t;
|
|
|
|
#define pte_val(x) (x)
|
|
#define pmd_val(x) (x)
|
|
#define pgd_val(x) ((x)[0])
|
|
#define pgprot_val(x) (x)
|
|
|
|
#define __pte(x) (x)
|
|
#define __pmd(x) (x)
|
|
#define __pgprot(x) (x)
|
|
|
|
/* to align the pointer to the (next) page boundary */
|
|
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
|
|
|
|
extern unsigned long memory_start;
|
|
extern unsigned long memory_end;
|
|
|
|
#endif
|