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