mirror of
https://github.com/torvalds/linux
synced 2024-10-20 18:28:21 +00:00
5e4417f921
Allow vectors to be either merged into the kernel .text or put at a fixed virtual address independently of XIP option. Drop option that puts vectors at a fixed offset from the kernel text. Add choice to Kconfig. Vectors at fixed virtual address may be useful for XIP-aware MTD support and for noMMU configurations with available IRAM. Configurations without VECBASE register must put their vectors at specific locations regardless of the selected option. All other configurations should happily use merged vectors. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
/*
|
|
* 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 <asm/core.h>
|
|
#include <asm/kmem_layout.h>
|
|
|
|
#if defined(CONFIG_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
|
|
#ifdef CONFIG_KERNEL_VIRTUAL_ADDRESS
|
|
#define KERNELOFFSET CONFIG_KERNEL_VIRTUAL_ADDRESS
|
|
#else
|
|
#define KERNELOFFSET (CONFIG_KERNEL_LOAD_ADDRESS + \
|
|
XCHAL_KSEG_CACHED_VADDR - \
|
|
XCHAL_KSEG_PADDR)
|
|
#endif
|
|
#else
|
|
#define KERNELOFFSET CONFIG_KERNEL_LOAD_ADDRESS
|
|
#endif
|
|
|
|
#define RESET_VECTOR1_VADDR (XCHAL_RESET_VECTOR1_VADDR)
|
|
#ifdef CONFIG_VECTORS_ADDR
|
|
#define VECBASE_VADDR (CONFIG_VECTORS_ADDR)
|
|
#else
|
|
#define VECBASE_VADDR _vecbase
|
|
#endif
|
|
|
|
#if XCHAL_HAVE_VECBASE
|
|
|
|
#define VECTOR_VADDR(offset) (VECBASE_VADDR + offset)
|
|
|
|
#define USER_VECTOR_VADDR VECTOR_VADDR(XCHAL_USER_VECOFS)
|
|
#define KERNEL_VECTOR_VADDR VECTOR_VADDR(XCHAL_KERNEL_VECOFS)
|
|
#define DOUBLEEXC_VECTOR_VADDR VECTOR_VADDR(XCHAL_DOUBLEEXC_VECOFS)
|
|
#define WINDOW_VECTORS_VADDR VECTOR_VADDR(XCHAL_WINDOW_OF4_VECOFS)
|
|
#define INTLEVEL2_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL2_VECOFS)
|
|
#define INTLEVEL3_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL3_VECOFS)
|
|
#define INTLEVEL4_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL4_VECOFS)
|
|
#define INTLEVEL5_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL5_VECOFS)
|
|
#define INTLEVEL6_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL6_VECOFS)
|
|
#define INTLEVEL7_VECTOR_VADDR VECTOR_VADDR(XCHAL_INTLEVEL7_VECOFS)
|
|
#define DEBUG_VECTOR_VADDR VECTOR_VADDR(XCHAL_DEBUG_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_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_INTLEVEL7_VECTOR_VADDR
|
|
#undef XCHAL_DEBUG_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 INTLEVEL7_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR
|
|
#define DEBUG_VECTOR_VADDR XCHAL_DEBUG_VECTOR_VADDR
|
|
|
|
#endif
|
|
|
|
#endif /* _XTENSA_VECTORS_H */
|