| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (C) 2017, STMicroelectronics - All Rights Reserved |
| * Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics. |
| */ |
| |
| enum region_number { |
| REGION_0 = 0, |
| REGION_1, |
| REGION_2, |
| REGION_3, |
| REGION_4, |
| REGION_5, |
| REGION_6, |
| REGION_7, |
| }; |
| |
| enum ap { |
| NO_ACCESS = 0, |
| PRIV_RW_USR_NO, |
| PRIV_RW_USR_RO, |
| PRIV_RW_USR_RW, |
| UNPREDICTABLE, |
| PRIV_RO_USR_NO, |
| PRIV_RO_USR_RO, |
| }; |
| |
| enum mr_attr { |
| STRONG_ORDER = 0, |
| SHARED_WRITE_BUFFERED, |
| O_I_WT_NO_WR_ALLOC, |
| O_I_WB_NO_WR_ALLOC, |
| O_I_NON_CACHEABLE, |
| O_I_WB_RD_WR_ALLOC, |
| DEVICE_NON_SHARED, |
| }; |
| enum size { |
| REGION_8MB = 22, |
| REGION_16MB, |
| REGION_32MB, |
| REGION_64MB, |
| REGION_128MB, |
| REGION_256MB, |
| REGION_512MB, |
| REGION_1GB, |
| REGION_2GB, |
| REGION_4GB, |
| }; |
| |
| enum xn { |
| XN_DIS = 0, |
| XN_EN, |
| }; |
| |
| struct mpu_region_config { |
| uint32_t start_addr; |
| enum region_number region_no; |
| enum xn xn; |
| enum ap ap; |
| enum mr_attr mr_attr; |
| enum size reg_size; |
| }; |
| |
| void disable_mpu(void); |
| void enable_mpu(void); |
| void mpu_config(struct mpu_region_config *reg_config); |
