/* * Kernel virtual memory layout definitions. * * 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) 2016 Cadence Design Systems Inc. */ #ifndef _XTENSA_KMEM_LAYOUT_H #define _XTENSA_KMEM_LAYOUT_H #include #ifdef CONFIG_MMU /* * Fixed TLB translations in the processor. */ #define XCHAL_PAGE_TABLE_VADDR __XTENSA_UL_CONST(0x80000000) #define XCHAL_PAGE_TABLE_SIZE __XTENSA_UL_CONST(0x00400000) #if defined(CONFIG_XTENSA_KSEG_MMU_V2) #define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xd0000000) #define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xd8000000) #define XCHAL_KSEG_SIZE __XTENSA_UL_CONST(0x08000000) #define XCHAL_KSEG_ALIGNMENT __XTENSA_UL_CONST(0x08000000) #define XCHAL_KSEG_TLB_WAY 5 #define XCHAL_KIO_TLB_WAY 6 #elif defined(CONFIG_XTENSA_KSEG_256M) #define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xb0000000) #define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xc0000000) #define XCHAL_KSEG_SIZE __XTENSA_UL_CONST(0x10000000) #define XCHAL_KSEG_ALIGNMENT __XTENSA_UL_CONST(0x10000000) #define XCHAL_KSEG_TLB_WAY 6 #define XCHAL_KIO_TLB_WAY 6 #elif defined(CONFIG_XTENSA_KSEG_512M) #define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xa0000000) #define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xc0000000) #define XCHAL_KSEG_SIZE __XTENSA_UL_CONST(0x20000000) #define XCHAL_KSEG_ALIGNMENT __XTENSA_UL_CONST(0x10000000) #define XCHAL_KSEG_TLB_WAY 6 #define XCHAL_KIO_TLB_WAY 6 #else #error Unsupported KSEG configuration #endif #ifdef CONFIG_KSEG_PADDR #define XCHAL_KSEG_PADDR __XTENSA_UL_CONST(CONFIG_KSEG_PADDR) #else #define XCHAL_KSEG_PADDR __XTENSA_UL_CONST(0x00000000) #endif #if XCHAL_KSEG_PADDR & (XCHAL_KSEG_ALIGNMENT - 1) #error XCHAL_KSEG_PADDR is not properly aligned to XCHAL_KSEG_ALIGNMENT #endif #endif #ifndef CONFIG_KASAN #define KERNEL_STACK_SHIFT 13 #else #define KERNEL_STACK_SHIFT 15 #endif #define KERNEL_STACK_SIZE (1 << KERNEL_STACK_SHIFT) #endif