1 files changed, 67 insertions, 0 deletions
diff --git a/arch/arm/include/asm/armv7m_mpu.h b/arch/arm/include/asm/armv7m_mpu.h
new file mode 100644
index 0000000..d7e99b4
--- /dev/null
+++ b/arch/arm/include/asm/armv7m_mpu.h
@@ -0,0 +1,67 @@
+/*
+ * (C) Copyright 2017
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+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);