1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2017, STMicroelectronics - All Rights Reserved 4 * Author(s): Patrice Chotard, <patrice.chotard@st.com> for STMicroelectronics. 5 */ 6 7 #include <common.h> 8 #include <asm/io.h> 9 #include <asm/armv7_mpu.h> 10 11 int arch_cpu_init(void) 12 { 13 int i; 14 15 struct mpu_region_config stm32_region_config[] = { 16 /* 17 * Make SDRAM area cacheable & executable. 18 */ 19 #if defined(CONFIG_STM32F4) 20 { 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW, 21 O_I_WB_RD_WR_ALLOC, REGION_16MB }, 22 #endif 23 24 #if defined(CONFIG_STM32F7) || defined(CONFIG_STM32H7) 25 { 0xC0000000, REGION_0, XN_DIS, PRIV_RW_USR_RW, 26 O_I_WB_RD_WR_ALLOC, REGION_512MB }, 27 #endif 28 }; 29 30 disable_mpu(); 31 for (i = 0; i < ARRAY_SIZE(stm32_region_config); i++) 32 mpu_config(&stm32_region_config[i]); 33 enable_mpu(); 34 35 return 0; 36 } 37