ARM: Add ARMv7-M support

[karo-tx-uboot.git] / arch / arm / include / asm / armv7m.h

diff --git a/arch/arm/include/asm/armv7m.h b/arch/arm/include/asm/armv7m.h
new file mode 100644 (file)
index 0000000..d2aa1c4
--- /dev/null
+++ b/arch/arm/include/asm/armv7m.h
@@ -0,0 +1,60 @@
+/*
+ * (C) Copyright 2010,2011
+ * Vladimir Khusainov, Emcraft Systems, vlad@emcraft.com
+ *
+ * (C) Copyright 2015
+ * Kamil Lulko, <rev13@wp.pl>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef ARMV7M_H
+#define ARMV7M_H
+
+#if defined(__ASSEMBLY__)
+.syntax unified
+.thumb
+#endif
+
+#define V7M_SCB_BASE           0xE000ED00
+#define V7M_MPU_BASE           0xE000ED90
+
+#define V7M_SCB_VTOR           0x08
+
+#if !defined(__ASSEMBLY__)
+struct v7m_scb {
+       uint32_t cpuid;         /* CPUID Base Register */
+       uint32_t icsr;          /* Interrupt Control and State Register */
+       uint32_t vtor;          /* Vector Table Offset Register */
+       uint32_t aircr;         /* App Interrupt and Reset Control Register */
+};
+#define V7M_SCB                                ((struct v7m_scb *)V7M_SCB_BASE)
+
+#define V7M_AIRCR_VECTKEY              0x5fa
+#define V7M_AIRCR_VECTKEY_SHIFT                16
+#define V7M_AIRCR_ENDIAN               (1 << 15)
+#define V7M_AIRCR_PRIGROUP_SHIFT       8
+#define V7M_AIRCR_PRIGROUP_MSK         (0x7 << V7M_AIRCR_PRIGROUP_SHIFT)
+#define V7M_AIRCR_SYSRESET             (1 << 2)
+
+#define V7M_ICSR_VECTACT_MSK           0xFF
+
+struct v7m_mpu {
+       uint32_t type;          /* Type Register */
+       uint32_t ctrl;          /* Control Register */
+       uint32_t rnr;           /* Region Number Register */
+       uint32_t rbar;          /* Region Base Address Register */
+       uint32_t rasr;          /* Region Attribute and Size Register */
+};
+#define V7M_MPU                                ((struct v7m_mpu *)V7M_MPU_BASE)
+
+#define V7M_MPU_CTRL_ENABLE            (1 << 0)
+#define V7M_MPU_CTRL_HFNMIENA          (1 << 1)
+
+#define V7M_MPU_RASR_EN                        (1 << 0)
+#define V7M_MPU_RASR_SIZE_BITS         1
+#define V7M_MPU_RASR_SIZE_4GB          (31 << V7M_MPU_RASR_SIZE_BITS)
+#define V7M_MPU_RASR_AP_RW_RW          (3 << 24)
+
+#endif /* !defined(__ASSEMBLY__) */
+#endif /* ARMV7M_H */