@@ -50,6 +50,42 @@ typedef struct {
prlar_t prlar;
} pr_t;
+/* Set base address of MPU protection region(pr_t). */
+static inline void pr_set_base(pr_t *pr, paddr_t base)
+{
+ pr->prbar.reg.base = (base >> MPU_REGION_SHIFT);
+}
+
+/* Set limit address of MPU protection region(pr_t). */
+static inline void pr_set_limit(pr_t *pr, paddr_t limit)
+{
+ pr->prlar.reg.limit = ((limit - 1) >> MPU_REGION_SHIFT);
+}
+
+/*
+ * Access to get base address of MPU protection region(pr_t).
+ * The base address shall be zero extended.
+ */
+static inline paddr_t pr_get_base(pr_t *pr)
+{
+ return (paddr_t)(pr->prbar.reg.base << MPU_REGION_SHIFT);
+}
+
+/*
+ * Access to get limit address of MPU protection region(pr_t).
+ * The limit address shall be concatenated with 0x3f.
+ */
+static inline paddr_t pr_get_limit(pr_t *pr)
+{
+ return (paddr_t)((pr->prlar.reg.limit << MPU_REGION_SHIFT)
+ | ~MPU_REGION_MASK);
+}
+
+static inline bool region_is_valid(pr_t *pr)
+{
+ return pr->prlar.reg.en;
+}
+
#endif /* __ASSEMBLY__ */
#endif /* __ARM64_MPU_H__ */
Introduce few utility function to manipulate and handle the pr_t type. Signed-off-by: Luca Fancellu <luca.fancellu@arm.com> --- xen/arch/arm/include/asm/arm64/mpu.h | 36 ++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+)