diff options
Diffstat (limited to 'roms/u-boot/arch/avr32/include/asm/arch-at32ap700x/addrspace.h')
-rw-r--r-- | roms/u-boot/arch/avr32/include/asm/arch-at32ap700x/addrspace.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/roms/u-boot/arch/avr32/include/asm/arch-at32ap700x/addrspace.h b/roms/u-boot/arch/avr32/include/asm/arch-at32ap700x/addrspace.h new file mode 100644 index 00000000..7b25e2ef --- /dev/null +++ b/roms/u-boot/arch/avr32/include/asm/arch-at32ap700x/addrspace.h @@ -0,0 +1,65 @@ +/* + * 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 */ |