1 /* 2 * ARMv7M CPU object 3 * 4 * Copyright (c) 2017 Linaro Ltd 5 * Written by Peter Maydell <peter.maydell@linaro.org> 6 * 7 * This code is licensed under the GPL version 2 or later. 8 */ 9 10 #ifndef HW_ARM_ARMV7M_H 11 #define HW_ARM_ARMV7M_H 12 13 #include "hw/sysbus.h" 14 #include "hw/intc/armv7m_nvic.h" 15 #include "target/arm/idau.h" 16 #include "qom/object.h" 17 18 #define TYPE_BITBAND "ARM-bitband-memory" 19 OBJECT_DECLARE_SIMPLE_TYPE(BitBandState, BITBAND) 20 21 struct BitBandState { 22 /*< private >*/ 23 SysBusDevice parent_obj; 24 /*< public >*/ 25 26 AddressSpace source_as; 27 MemoryRegion iomem; 28 uint32_t base; 29 MemoryRegion *source_memory; 30 }; 31 32 #define TYPE_ARMV7M "armv7m" 33 OBJECT_DECLARE_SIMPLE_TYPE(ARMv7MState, ARMV7M) 34 35 #define ARMV7M_NUM_BITBANDS 2 36 37 /* ARMv7M container object. 38 * + Unnamed GPIO input lines: external IRQ lines for the NVIC 39 * + Named GPIO output SYSRESETREQ: signalled for guest AIRCR.SYSRESETREQ. 40 * If this GPIO is not wired up then the NVIC will default to performing 41 * a qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET). 42 * + Property "cpu-type": CPU type to instantiate 43 * + Property "num-irq": number of external IRQ lines 44 * + Property "memory": MemoryRegion defining the physical address space 45 * that CPU accesses see. (The NVIC, bitbanding and other CPU-internal 46 * devices will be automatically layered on top of this view.) 47 * + Property "idau": IDAU interface (forwarded to CPU object) 48 * + Property "init-svtor": secure VTOR reset value (forwarded to CPU object) 49 * + Property "vfp": enable VFP (forwarded to CPU object) 50 * + Property "dsp": enable DSP (forwarded to CPU object) 51 * + Property "enable-bitband": expose bitbanded IO 52 */ 53 struct ARMv7MState { 54 /*< private >*/ 55 SysBusDevice parent_obj; 56 /*< public >*/ 57 NVICState nvic; 58 BitBandState bitband[ARMV7M_NUM_BITBANDS]; 59 ARMCPU *cpu; 60 61 /* MemoryRegion we pass to the CPU, with our devices layered on 62 * top of the ones the board provides in board_memory. 63 */ 64 MemoryRegion container; 65 66 /* Properties */ 67 char *cpu_type; 68 /* MemoryRegion the board provides to us (with its devices, RAM, etc) */ 69 MemoryRegion *board_memory; 70 Object *idau; 71 uint32_t init_svtor; 72 bool enable_bitband; 73 bool start_powered_off; 74 bool vfp; 75 bool dsp; 76 }; 77 78 #endif 79