ARM: Add ARMv7-M support
Signed-off-by: Kamil Lulko <rev13@wp.pl>
diff --git a/arch/arm/include/asm/armv7m.h b/arch/arm/include/asm/armv7m.h
new file mode 100644
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 */