mirror of https://gitee.com/openkylin/linux.git
29 lines
797 B
C
29 lines
797 B
C
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#ifndef _ASM_CRIS_ARCH_PAGE_H
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#define _ASM_CRIS_ARCH_PAGE_H
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#include <linux/config.h>
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#ifdef __KERNEL__
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#define PAGE_OFFSET KSEG_C /* kseg_c is mapped to physical ram. */
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/*
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* Macros to convert between physical and virtual addresses. By stripiing a
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* selected bit it's possible to convert between KSEG_x and 0x40000000 where the
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* DRAM really resides. DRAM is virtually at 0xc.
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*/
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#ifndef CONFIG_ETRAXFS_SIM
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#define __pa(x) ((unsigned long)(x) & 0x7fffffff)
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#define __va(x) ((void *)((unsigned long)(x) | 0x80000000))
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#else
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#define __pa(x) ((unsigned long)(x) & 0x3fffffff)
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#define __va(x) ((void *)((unsigned long)(x) | 0xc0000000))
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#endif
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#define VM_STACK_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
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VM_MAYREAD | VM_MAYWRITE)
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#endif /* __KERNEL__ */
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#endif /* _ASM_CRIS_ARCH_PAGE_H */
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