126 lines
4.1 KiB
C
126 lines
4.1 KiB
C
/*
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* arch/xtensa/include/asm/xchal_vaddr_remap.h
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*
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* Xtensa macros for MMU V3 Support. Deals with re-mapping the Virtual
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* Memory Addresses from "Virtual == Physical" to their prevvious V2 MMU
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* mappings (KSEG at 0xD0000000 and KIO at 0XF0000000).
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2008 - 2012 Tensilica Inc.
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*
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* Pete Delaney <piet@tensilica.com>
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* Marc Gauthier <marc@tensilica.com
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*/
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#ifndef _XTENSA_VECTORS_H
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#define _XTENSA_VECTORS_H
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#include <variant/core.h>
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#if defined(CONFIG_MMU)
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/* Will Become VECBASE */
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#define VIRTUAL_MEMORY_ADDRESS 0xD0000000
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/* Image Virtual Start Address */
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#define KERNELOFFSET 0xD0003000
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#if defined(XCHAL_HAVE_PTP_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
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/* MMU v3 - XCHAL_HAVE_PTP_MMU == 1 */
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#define PHYSICAL_MEMORY_ADDRESS 0x00000000
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#define LOAD_MEMORY_ADDRESS 0x00003000
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#else
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/* MMU V2 - XCHAL_HAVE_PTP_MMU == 0 */
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#define PHYSICAL_MEMORY_ADDRESS 0xD0000000
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#define LOAD_MEMORY_ADDRESS 0xD0003000
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#endif
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#else /* !defined(CONFIG_MMU) */
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/* MMU Not being used - Virtual == Physical */
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/* VECBASE */
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#define VIRTUAL_MEMORY_ADDRESS 0x00002000
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/* Location of the start of the kernel text, _start */
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#define KERNELOFFSET 0x00003000
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#define PHYSICAL_MEMORY_ADDRESS 0x00000000
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/* Loaded just above possibly live vectors */
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#define LOAD_MEMORY_ADDRESS 0x00003000
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#endif /* CONFIG_MMU */
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#define XC_VADDR(offset) (VIRTUAL_MEMORY_ADDRESS + offset)
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#define XC_PADDR(offset) (PHYSICAL_MEMORY_ADDRESS + offset)
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/* Used to set VECBASE register */
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#define VECBASE_RESET_VADDR VIRTUAL_MEMORY_ADDRESS
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#define RESET_VECTOR_VECOFS (XCHAL_RESET_VECTOR_VADDR - \
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VECBASE_RESET_VADDR)
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#define RESET_VECTOR_VADDR XC_VADDR(RESET_VECTOR_VECOFS)
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#define RESET_VECTOR1_VECOFS (XCHAL_RESET_VECTOR1_VADDR - \
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VECBASE_RESET_VADDR)
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#define RESET_VECTOR1_VADDR XC_VADDR(RESET_VECTOR1_VECOFS)
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#if XCHAL_HAVE_VECBASE
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#define USER_VECTOR_VADDR XC_VADDR(XCHAL_USER_VECOFS)
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#define KERNEL_VECTOR_VADDR XC_VADDR(XCHAL_KERNEL_VECOFS)
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#define DOUBLEEXC_VECTOR_VADDR XC_VADDR(XCHAL_DOUBLEEXC_VECOFS)
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#define WINDOW_VECTORS_VADDR XC_VADDR(XCHAL_WINDOW_OF4_VECOFS)
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#define INTLEVEL2_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL2_VECOFS)
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#define INTLEVEL3_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL3_VECOFS)
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#define INTLEVEL4_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL4_VECOFS)
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#define INTLEVEL5_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL5_VECOFS)
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#define INTLEVEL6_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL6_VECOFS)
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#define DEBUG_VECTOR_VADDR XC_VADDR(XCHAL_DEBUG_VECOFS)
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#undef XCHAL_NMI_VECTOR_VADDR
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#define XCHAL_NMI_VECTOR_VADDR XC_VADDR(XCHAL_NMI_VECOFS)
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#undef XCHAL_INTLEVEL7_VECTOR_VADDR
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#define XCHAL_INTLEVEL7_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL7_VECOFS)
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/*
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* These XCHAL_* #defines from varian/core.h
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* are not valid to use with V3 MMU. Non-XCHAL
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* constants are defined above and should be used.
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*/
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#undef XCHAL_VECBASE_RESET_VADDR
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#undef XCHAL_RESET_VECTOR0_VADDR
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#undef XCHAL_USER_VECTOR_VADDR
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#undef XCHAL_KERNEL_VECTOR_VADDR
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#undef XCHAL_DOUBLEEXC_VECTOR_VADDR
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#undef XCHAL_WINDOW_VECTORS_VADDR
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#undef XCHAL_INTLEVEL2_VECTOR_VADDR
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#undef XCHAL_INTLEVEL3_VECTOR_VADDR
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#undef XCHAL_INTLEVEL4_VECTOR_VADDR
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#undef XCHAL_INTLEVEL5_VECTOR_VADDR
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#undef XCHAL_INTLEVEL6_VECTOR_VADDR
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#undef XCHAL_DEBUG_VECTOR_VADDR
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#undef XCHAL_NMI_VECTOR_VADDR
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#undef XCHAL_INTLEVEL7_VECTOR_VADDR
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#else
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#define USER_VECTOR_VADDR XCHAL_USER_VECTOR_VADDR
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#define KERNEL_VECTOR_VADDR XCHAL_KERNEL_VECTOR_VADDR
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#define DOUBLEEXC_VECTOR_VADDR XCHAL_DOUBLEEXC_VECTOR_VADDR
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#define WINDOW_VECTORS_VADDR XCHAL_WINDOW_VECTORS_VADDR
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#define INTLEVEL2_VECTOR_VADDR XCHAL_INTLEVEL2_VECTOR_VADDR
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#define INTLEVEL3_VECTOR_VADDR XCHAL_INTLEVEL3_VECTOR_VADDR
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#define INTLEVEL4_VECTOR_VADDR XCHAL_INTLEVEL4_VECTOR_VADDR
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#define INTLEVEL5_VECTOR_VADDR XCHAL_INTLEVEL5_VECTOR_VADDR
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#define INTLEVEL6_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR
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#define DEBUG_VECTOR_VADDR XCHAL_DEBUG_VECTOR_VADDR
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#endif
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#endif /* _XTENSA_VECTORS_H */
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