Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
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* Copyright (C) 2006 Atmel Corporation
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __ASM_AVR32_ADDRSPACE_H
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#define __ASM_AVR32_ADDRSPACE_H
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#include <asm/types.h>
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/* Memory segments when segmentation is enabled */
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#define P0SEG 0x00000000
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#define P1SEG 0x80000000
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#define P2SEG 0xa0000000
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#define P3SEG 0xc0000000
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#define P4SEG 0xe0000000
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/* Returns the privileged segment base of a given address */
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#define PXSEG(a) (((unsigned long)(a)) & 0xe0000000)
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/* Returns the physical address of a PnSEG (n=1,2) address */
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#define PHYSADDR(a) (((unsigned long)(a)) & 0x1fffffff)
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/*
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* Map an address to a certain privileged segment
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*/
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#define P1SEGADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P1SEG))
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#define P2SEGADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P2SEG))
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#define P3SEGADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P3SEG))
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#define P4SEGADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | P4SEG))
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/* virt_to_phys will only work when address is in P1 or P2 */
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static inline unsigned long virt_to_phys(volatile void *address)
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{
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return PHYSADDR(address);
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}
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static inline void * phys_to_virt(unsigned long address)
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{
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return (void *)P1SEGADDR(address);
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}
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#define cached(addr) ((void *)P1SEGADDR(addr))
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#define uncached(addr) ((void *)P2SEGADDR(addr))
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/*
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* Given a physical address and a length, return a virtual address
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* that can be used to access the memory range with the caching
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* properties specified by "flags".
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*
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* This implementation works for memory below 512MiB (flash, etc.) as
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* well as above 3.5GiB (internal peripherals.)
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*/
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#define MAP_NOCACHE (0)
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#define MAP_WRCOMBINE (1 << 7)
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#define MAP_WRBACK (MAP_WRCOMBINE | (1 << 9))
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#define MAP_WRTHROUGH (MAP_WRBACK | (1 << 0))
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static inline void *
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map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
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{
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return (void *)paddr;
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}
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#endif /* __ASM_AVR32_ADDRSPACE_H */
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