diff options
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/timer/nrf51_timer.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/include/hw/timer/nrf51_timer.h b/include/hw/timer/nrf51_timer.h new file mode 100644 index 0000000000..85cad2300d --- /dev/null +++ b/include/hw/timer/nrf51_timer.h @@ -0,0 +1,80 @@ +/* + * nRF51 System-on-Chip Timer peripheral + * + * QEMU interface: + * + sysbus MMIO regions 0: GPIO registers + * + sysbus irq + * + * Copyright 2018 Steffen Görtz <contrib@steffen-goertz.de> + * + * This code is licensed under the GPL version 2 or later. See + * the COPYING file in the top-level directory. + */ +#ifndef NRF51_TIMER_H +#define NRF51_TIMER_H + +#include "hw/sysbus.h" +#include "qemu/timer.h" +#define TYPE_NRF51_TIMER "nrf51_soc.timer" +#define NRF51_TIMER(obj) OBJECT_CHECK(NRF51TimerState, (obj), TYPE_NRF51_TIMER) + +#define NRF51_TIMER_REG_COUNT 4 + +#define NRF51_TIMER_TASK_START 0x000 +#define NRF51_TIMER_TASK_STOP 0x004 +#define NRF51_TIMER_TASK_COUNT 0x008 +#define NRF51_TIMER_TASK_CLEAR 0x00C +#define NRF51_TIMER_TASK_SHUTDOWN 0x010 +#define NRF51_TIMER_TASK_CAPTURE_0 0x040 +#define NRF51_TIMER_TASK_CAPTURE_3 0x04C + +#define NRF51_TIMER_EVENT_COMPARE_0 0x140 +#define NRF51_TIMER_EVENT_COMPARE_1 0x144 +#define NRF51_TIMER_EVENT_COMPARE_2 0x148 +#define NRF51_TIMER_EVENT_COMPARE_3 0x14C + +#define NRF51_TIMER_REG_SHORTS 0x200 +#define NRF51_TIMER_REG_SHORTS_MASK 0xf0f +#define NRF51_TIMER_REG_INTENSET 0x304 +#define NRF51_TIMER_REG_INTENCLR 0x308 +#define NRF51_TIMER_REG_INTEN_MASK 0xf0000 +#define NRF51_TIMER_REG_MODE 0x504 +#define NRF51_TIMER_REG_MODE_MASK 0x01 +#define NRF51_TIMER_TIMER 0 +#define NRF51_TIMER_COUNTER 1 +#define NRF51_TIMER_REG_BITMODE 0x508 +#define NRF51_TIMER_REG_BITMODE_MASK 0x03 +#define NRF51_TIMER_WIDTH_16 0 +#define NRF51_TIMER_WIDTH_8 1 +#define NRF51_TIMER_WIDTH_24 2 +#define NRF51_TIMER_WIDTH_32 3 +#define NRF51_TIMER_REG_PRESCALER 0x510 +#define NRF51_TIMER_REG_PRESCALER_MASK 0x0F +#define NRF51_TIMER_REG_CC0 0x540 +#define NRF51_TIMER_REG_CC3 0x54C + +typedef struct NRF51TimerState { + SysBusDevice parent_obj; + + MemoryRegion iomem; + qemu_irq irq; + + QEMUTimer timer; + int64_t timer_start_ns; + int64_t update_counter_ns; + uint32_t counter; + + bool running; + + uint8_t events_compare[NRF51_TIMER_REG_COUNT]; + uint32_t cc[NRF51_TIMER_REG_COUNT]; + uint32_t shorts; + uint32_t inten; + uint32_t mode; + uint32_t bitmode; + uint32_t prescaler; + +} NRF51TimerState; + + +#endif |