1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_TASK_SIZE_32_H 3 #define _ASM_POWERPC_TASK_SIZE_32_H 4 5 #include <linux/sizes.h> 6 7 #if CONFIG_TASK_SIZE > CONFIG_KERNEL_START 8 #error User TASK_SIZE overlaps with KERNEL_START address 9 #endif 10 11 #ifdef CONFIG_PPC_8xx 12 #define MODULES_END ASM_CONST(CONFIG_PAGE_OFFSET) 13 #define MODULES_SIZE (CONFIG_MODULES_SIZE * SZ_1M) 14 #define MODULES_VADDR (MODULES_END - MODULES_SIZE) 15 #define MODULES_BASE (MODULES_VADDR & ~(UL(SZ_4M) - 1)) 16 #define USER_TOP (MODULES_BASE - SZ_4M) 17 #endif 18 19 #ifdef CONFIG_PPC_BOOK3S_32 20 #define MODULES_END (ASM_CONST(CONFIG_PAGE_OFFSET) & ~(UL(SZ_256M) - 1)) 21 #define MODULES_SIZE (CONFIG_MODULES_SIZE * SZ_1M) 22 #define MODULES_VADDR (MODULES_END - MODULES_SIZE) 23 #define MODULES_BASE (MODULES_VADDR & ~(UL(SZ_256M) - 1)) 24 #define USER_TOP (MODULES_BASE - SZ_4M) 25 #endif 26 27 #ifndef USER_TOP 28 #define USER_TOP ((ASM_CONST(CONFIG_PAGE_OFFSET) - SZ_128K) & ~(UL(SZ_128K) - 1)) 29 #endif 30 31 #if CONFIG_TASK_SIZE < USER_TOP 32 #define TASK_SIZE ASM_CONST(CONFIG_TASK_SIZE) 33 #else 34 #define TASK_SIZE USER_TOP 35 #endif 36 37 /* 38 * This decides where the kernel will search for a free chunk of vm space during 39 * mmap's. 40 */ 41 #define TASK_UNMAPPED_BASE (TASK_SIZE / 8 * 3) 42 43 #define DEFAULT_MAP_WINDOW TASK_SIZE 44 #define STACK_TOP TASK_SIZE 45 #define STACK_TOP_MAX STACK_TOP 46 47 #endif /* _ASM_POWERPC_TASK_SIZE_32_H */ 48