aboutsummaryrefslogtreecommitdiff
path: root/include/hw/arm/armv7m.h
blob: 189b23a8ceb5aed226a5184234a8715bd73add7c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
/*
 * ARMv7M CPU object
 *
 * Copyright (c) 2017 Linaro Ltd
 * Written by Peter Maydell <peter.maydell@linaro.org>
 *
 * This code is licensed under the GPL version 2 or later.
 */

#ifndef HW_ARM_ARMV7M_H
#define HW_ARM_ARMV7M_H

#include "hw/sysbus.h"
#include "hw/intc/armv7m_nvic.h"
#include "target/arm/idau.h"
#include "qom/object.h"

#define TYPE_BITBAND "ARM-bitband-memory"
OBJECT_DECLARE_SIMPLE_TYPE(BitBandState, BITBAND)

struct BitBandState {
    /*< private >*/
    SysBusDevice parent_obj;
    /*< public >*/

    AddressSpace source_as;
    MemoryRegion iomem;
    uint32_t base;
    MemoryRegion *source_memory;
};

#define TYPE_ARMV7M "armv7m"
OBJECT_DECLARE_SIMPLE_TYPE(ARMv7MState, ARMV7M)

#define ARMV7M_NUM_BITBANDS 2

/* ARMv7M container object.
 * + Unnamed GPIO input lines: external IRQ lines for the NVIC
 * + Named GPIO output SYSRESETREQ: signalled for guest AIRCR.SYSRESETREQ.
 *   If this GPIO is not wired up then the NVIC will default to performing
 *   a qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET).
 * + Property "cpu-type": CPU type to instantiate
 * + Property "num-irq": number of external IRQ lines
 * + Property "memory": MemoryRegion defining the physical address space
 *   that CPU accesses see. (The NVIC, bitbanding and other CPU-internal
 *   devices will be automatically layered on top of this view.)
 * + Property "idau": IDAU interface (forwarded to CPU object)
 * + Property "init-svtor": secure VTOR reset value (forwarded to CPU object)
 * + Property "vfp": enable VFP (forwarded to CPU object)
 * + Property "dsp": enable DSP (forwarded to CPU object)
 * + Property "enable-bitband": expose bitbanded IO
 */
struct ARMv7MState {
    /*< private >*/
    SysBusDevice parent_obj;
    /*< public >*/
    NVICState nvic;
    BitBandState bitband[ARMV7M_NUM_BITBANDS];
    ARMCPU *cpu;

    /* MemoryRegion we pass to the CPU, with our devices layered on
     * top of the ones the board provides in board_memory.
     */
    MemoryRegion container;

    /* Properties */
    char *cpu_type;
    /* MemoryRegion the board provides to us (with its devices, RAM, etc) */
    MemoryRegion *board_memory;
    Object *idau;
    uint32_t init_svtor;
    bool enable_bitband;
    bool start_powered_off;
    bool vfp;
    bool dsp;
};

#endif