vectors.h
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/*
* arch/xtensa/include/asm/xchal_vaddr_remap.h
*
* Xtensa macros for MMU V3 Support. Deals with re-mapping the Virtual
* Memory Addresses from "Virtual == Physical" to their prevvious V2 MMU
* mappings (KSEG at 0xD0000000 and KIO at 0XF0000000).
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2008 - 2012 Tensilica Inc.
*
* Pete Delaney <piet@tensilica.com>
* Marc Gauthier <marc@tensilica.com
*/
#ifndef _XTENSA_VECTORS_H
#define _XTENSA_VECTORS_H
#include <variant/core.h>
#include <platform/hardware.h>
#if XCHAL_HAVE_PTP_MMU
#define XCHAL_KIO_CACHED_VADDR 0xe0000000
#define XCHAL_KIO_BYPASS_VADDR 0xf0000000
#define XCHAL_KIO_DEFAULT_PADDR 0xf0000000
#else
#define XCHAL_KIO_BYPASS_VADDR XCHAL_KIO_PADDR
#define XCHAL_KIO_DEFAULT_PADDR 0x90000000
#endif
#define XCHAL_KIO_SIZE 0x10000000
#if (!XCHAL_HAVE_PTP_MMU || XCHAL_HAVE_SPANNING_WAY) && defined(CONFIG_OF)
#define XCHAL_KIO_PADDR xtensa_get_kio_paddr()
#ifndef __ASSEMBLY__
extern unsigned long xtensa_kio_paddr;
static inline unsigned long xtensa_get_kio_paddr(void)
{
return xtensa_kio_paddr;
}
#endif
#else
#define XCHAL_KIO_PADDR XCHAL_KIO_DEFAULT_PADDR
#endif
#if defined(CONFIG_MMU)
/* Will Become VECBASE */
#define VIRTUAL_MEMORY_ADDRESS 0xD0000000
/* Image Virtual Start Address */
#define KERNELOFFSET 0xD0003000
#if defined(XCHAL_HAVE_PTP_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
/* MMU v3 - XCHAL_HAVE_PTP_MMU == 1 */
#define LOAD_MEMORY_ADDRESS 0x00003000
#else
/* MMU V2 - XCHAL_HAVE_PTP_MMU == 0 */
#define LOAD_MEMORY_ADDRESS 0xD0003000
#endif
#define RESET_VECTOR1_VADDR (VIRTUAL_MEMORY_ADDRESS + \
XCHAL_RESET_VECTOR1_PADDR)
#else /* !defined(CONFIG_MMU) */
/* MMU Not being used - Virtual == Physical */
/* VECBASE */
#define VIRTUAL_MEMORY_ADDRESS (PLATFORM_DEFAULT_MEM_START + 0x2000)
/* Location of the start of the kernel text, _start */
#define KERNELOFFSET (PLATFORM_DEFAULT_MEM_START + 0x3000)
/* Loaded just above possibly live vectors */
#define LOAD_MEMORY_ADDRESS (PLATFORM_DEFAULT_MEM_START + 0x3000)
#define RESET_VECTOR1_VADDR (XCHAL_RESET_VECTOR1_VADDR)
#endif /* CONFIG_MMU */
#define XC_VADDR(offset) (VIRTUAL_MEMORY_ADDRESS + offset)
/* Used to set VECBASE register */
#define VECBASE_RESET_VADDR VIRTUAL_MEMORY_ADDRESS
#if defined(XCHAL_HAVE_VECBASE) && XCHAL_HAVE_VECBASE
#define USER_VECTOR_VADDR XC_VADDR(XCHAL_USER_VECOFS)
#define KERNEL_VECTOR_VADDR XC_VADDR(XCHAL_KERNEL_VECOFS)
#define DOUBLEEXC_VECTOR_VADDR XC_VADDR(XCHAL_DOUBLEEXC_VECOFS)
#define WINDOW_VECTORS_VADDR XC_VADDR(XCHAL_WINDOW_OF4_VECOFS)
#define INTLEVEL2_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL2_VECOFS)
#define INTLEVEL3_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL3_VECOFS)
#define INTLEVEL4_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL4_VECOFS)
#define INTLEVEL5_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL5_VECOFS)
#define INTLEVEL6_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL6_VECOFS)
#define DEBUG_VECTOR_VADDR XC_VADDR(XCHAL_DEBUG_VECOFS)
#define NMI_VECTOR_VADDR XC_VADDR(XCHAL_NMI_VECOFS)
#define INTLEVEL7_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL7_VECOFS)
/*
* These XCHAL_* #defines from varian/core.h
* are not valid to use with V3 MMU. Non-XCHAL
* constants are defined above and should be used.
*/
#undef XCHAL_VECBASE_RESET_VADDR
#undef XCHAL_RESET_VECTOR0_VADDR
#undef XCHAL_USER_VECTOR_VADDR
#undef XCHAL_KERNEL_VECTOR_VADDR
#undef XCHAL_DOUBLEEXC_VECTOR_VADDR
#undef XCHAL_WINDOW_VECTORS_VADDR
#undef XCHAL_INTLEVEL2_VECTOR_VADDR
#undef XCHAL_INTLEVEL3_VECTOR_VADDR
#undef XCHAL_INTLEVEL4_VECTOR_VADDR
#undef XCHAL_INTLEVEL5_VECTOR_VADDR
#undef XCHAL_INTLEVEL6_VECTOR_VADDR
#undef XCHAL_DEBUG_VECTOR_VADDR
#undef XCHAL_NMI_VECTOR_VADDR
#undef XCHAL_INTLEVEL7_VECTOR_VADDR
#else
#define USER_VECTOR_VADDR XCHAL_USER_VECTOR_VADDR
#define KERNEL_VECTOR_VADDR XCHAL_KERNEL_VECTOR_VADDR
#define DOUBLEEXC_VECTOR_VADDR XCHAL_DOUBLEEXC_VECTOR_VADDR
#define WINDOW_VECTORS_VADDR XCHAL_WINDOW_VECTORS_VADDR
#define INTLEVEL2_VECTOR_VADDR XCHAL_INTLEVEL2_VECTOR_VADDR
#define INTLEVEL3_VECTOR_VADDR XCHAL_INTLEVEL3_VECTOR_VADDR
#define INTLEVEL4_VECTOR_VADDR XCHAL_INTLEVEL4_VECTOR_VADDR
#define INTLEVEL5_VECTOR_VADDR XCHAL_INTLEVEL5_VECTOR_VADDR
#define INTLEVEL6_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR
#define DEBUG_VECTOR_VADDR XCHAL_DEBUG_VECTOR_VADDR
#endif
#endif /* _XTENSA_VECTORS_H */