forked from Minki/linux
9b97173e78
Several of the ioremap functions use unsigned long in places resulting in truncation if physical addresses greater than 4G are passed in. Change the types of the functions and the callers accordingly. Cc: Krzysztof Halasa <khc@pm.waw.pl> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/*
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* linux/arch/arm/mm/nommu.c
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*
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* ARM uCLinux supporting functions.
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*/
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#include <linux/module.h>
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#include <linux/mm.h>
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#include <linux/pagemap.h>
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#include <linux/io.h>
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#include <linux/memblock.h>
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#include <asm/cacheflush.h>
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#include <asm/sections.h>
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#include <asm/page.h>
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#include <asm/setup.h>
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#include <asm/traps.h>
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#include <asm/mach/arch.h>
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#include "mm.h"
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void __init arm_mm_memblock_reserve(void)
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{
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/*
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* Register the exception vector page.
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* some architectures which the DRAM is the exception vector to trap,
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* alloc_page breaks with error, although it is not NULL, but "0."
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*/
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memblock_reserve(CONFIG_VECTORS_BASE, PAGE_SIZE);
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}
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void __init sanity_check_meminfo(void)
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{
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phys_addr_t end = bank_phys_end(&meminfo.bank[meminfo.nr_banks - 1]);
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high_memory = __va(end - 1) + 1;
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}
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/*
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* paging_init() sets up the page tables, initialises the zone memory
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* maps, and sets up the zero page, bad page and bad page tables.
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*/
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void __init paging_init(struct machine_desc *mdesc)
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{
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early_trap_init((void *)CONFIG_VECTORS_BASE);
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bootmem_init();
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}
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/*
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* We don't need to do anything here for nommu machines.
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*/
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void setup_mm_for_reboot(void)
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{
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}
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void flush_dcache_page(struct page *page)
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{
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__cpuc_flush_dcache_area(page_address(page), PAGE_SIZE);
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}
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EXPORT_SYMBOL(flush_dcache_page);
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void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
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unsigned long uaddr, void *dst, const void *src,
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unsigned long len)
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{
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memcpy(dst, src, len);
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if (vma->vm_flags & VM_EXEC)
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__cpuc_coherent_user_range(uaddr, uaddr + len);
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}
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void __iomem *__arm_ioremap_pfn(unsigned long pfn, unsigned long offset,
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size_t size, unsigned int mtype)
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{
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if (pfn >= (0x100000000ULL >> PAGE_SHIFT))
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return NULL;
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return (void __iomem *) (offset + (pfn << PAGE_SHIFT));
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}
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EXPORT_SYMBOL(__arm_ioremap_pfn);
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void __iomem *__arm_ioremap_pfn_caller(unsigned long pfn, unsigned long offset,
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size_t size, unsigned int mtype, void *caller)
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{
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return __arm_ioremap_pfn(pfn, offset, size, mtype);
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}
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void __iomem *__arm_ioremap(phys_addr_t phys_addr, size_t size,
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unsigned int mtype)
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{
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return (void __iomem *)phys_addr;
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}
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EXPORT_SYMBOL(__arm_ioremap);
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void __iomem * (*arch_ioremap_caller)(phys_addr_t, size_t, unsigned int, void *);
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void __iomem *__arm_ioremap_caller(phys_addr_t phys_addr, size_t size,
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unsigned int mtype, void *caller)
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{
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return __arm_ioremap(phys_addr, size, mtype);
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}
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void (*arch_iounmap)(volatile void __iomem *);
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void __arm_iounmap(volatile void __iomem *addr)
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{
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}
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EXPORT_SYMBOL(__arm_iounmap);
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