u-boot/arch/avr32/include/asm/arch-at32ap700x/addrspace.h
Wolfgang Denk 1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00

65 lines
1.9 KiB
C

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