| /* |
| * 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> |
| #include <asm/kmem_layout.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) |
| |
| #if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY |
| /* Image Virtual Start Address */ |
| #define KERNELOFFSET (XCHAL_KSEG_CACHED_VADDR + \ |
| CONFIG_KERNEL_LOAD_ADDRESS - \ |
| XCHAL_KSEG_PADDR) |
| #else |
| #define KERNELOFFSET CONFIG_KERNEL_LOAD_ADDRESS |
| #endif |
| |
| #else /* !defined(CONFIG_MMU) */ |
| /* MMU Not being used - Virtual == Physical */ |
| |
| /* Location of the start of the kernel text, _start */ |
| #define KERNELOFFSET CONFIG_KERNEL_LOAD_ADDRESS |
| |
| |
| #endif /* CONFIG_MMU */ |
| |
| #define RESET_VECTOR1_VADDR (XCHAL_RESET_VECTOR1_VADDR) |
| #ifdef CONFIG_VECTORS_OFFSET |
| #define VECBASE_VADDR (KERNELOFFSET - CONFIG_VECTORS_OFFSET) |
| #else |
| #define VECBASE_VADDR _vecbase |
| #endif |
| |
| #if defined(XCHAL_HAVE_VECBASE) && 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 */ |
