1 /* 2 * (C) Copyright 2010,2011 3 * Vladimir Khusainov, Emcraft Systems, vlad@emcraft.com 4 * 5 * (C) Copyright 2015 6 * Kamil Lulko, <kamil.lulko@gmail.com> 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #ifndef ARMV7M_H 12 #define ARMV7M_H 13 14 #if defined(__ASSEMBLY__) 15 .syntax unified 16 .thumb 17 #endif 18 19 /* armv7m fixed base addresses */ 20 #define V7M_SCS_BASE 0xE000E000 21 #define V7M_NVIC_BASE (V7M_SCS_BASE + 0x0100) 22 #define V7M_SCB_BASE (V7M_SCS_BASE + 0x0D00) 23 #define V7M_PROC_FTR_BASE (V7M_SCS_BASE + 0x0D78) 24 #define V7M_MPU_BASE (V7M_SCS_BASE + 0x0D90) 25 #define V7M_FPU_BASE (V7M_SCS_BASE + 0x0F30) 26 #define V7M_CACHE_MAINT_BASE (V7M_SCS_BASE + 0x0F50) 27 #define V7M_ACCESS_CNTL_BASE (V7M_SCS_BASE + 0x0F90) 28 29 #define V7M_SCB_VTOR 0x08 30 31 #if !defined(__ASSEMBLY__) 32 struct v7m_scb { 33 uint32_t cpuid; /* CPUID Base Register */ 34 uint32_t icsr; /* Interrupt Control and State Register */ 35 uint32_t vtor; /* Vector Table Offset Register */ 36 uint32_t aircr; /* App Interrupt and Reset Control Register */ 37 uint32_t scr; /* offset 0x10: System Control Register */ 38 uint32_t ccr; /* offset 0x14: Config and Control Register */ 39 uint32_t shpr1; /* offset 0x18: System Handler Priority Reg 1 */ 40 uint32_t shpr2; /* offset 0x1c: System Handler Priority Reg 2 */ 41 uint32_t shpr3; /* offset 0x20: System Handler Priority Reg 3 */ 42 uint32_t shcrs; /* offset 0x24: System Handler Control State */ 43 uint32_t cfsr; /* offset 0x28: Configurable Fault Status Reg */ 44 uint32_t hfsr; /* offset 0x2C: HardFault Status Register */ 45 uint32_t res; /* offset 0x30: reserved */ 46 uint32_t mmar; /* offset 0x34: MemManage Fault Address Reg */ 47 uint32_t bfar; /* offset 0x38: BusFault Address Reg */ 48 uint32_t afsr; /* offset 0x3C: Auxiliary Fault Status Reg */ 49 }; 50 #define V7M_SCB ((struct v7m_scb *)V7M_SCB_BASE) 51 52 #define V7M_AIRCR_VECTKEY 0x5fa 53 #define V7M_AIRCR_VECTKEY_SHIFT 16 54 #define V7M_AIRCR_ENDIAN (1 << 15) 55 #define V7M_AIRCR_PRIGROUP_SHIFT 8 56 #define V7M_AIRCR_PRIGROUP_MSK (0x7 << V7M_AIRCR_PRIGROUP_SHIFT) 57 #define V7M_AIRCR_SYSRESET (1 << 2) 58 59 #define V7M_ICSR_VECTACT_MSK 0xFF 60 61 #define V7M_CCR_DCACHE 16 62 #define V7M_CCR_ICACHE 17 63 64 struct v7m_mpu { 65 uint32_t type; /* Type Register */ 66 uint32_t ctrl; /* Control Register */ 67 uint32_t rnr; /* Region Number Register */ 68 uint32_t rbar; /* Region Base Address Register */ 69 uint32_t rasr; /* Region Attribute and Size Register */ 70 }; 71 #define V7M_MPU ((struct v7m_mpu *)V7M_MPU_BASE) 72 73 #endif /* !defined(__ASSEMBLY__) */ 74 #endif /* ARMV7M_H */ 75