diff options
| author | Alistair Francis <alistair.francis@wdc.com> | 2021-06-18 17:27:54 +1000 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2021-06-24 05:00:12 -0700 |
| commit | df41cbd6bfa55dc3e69834f4402dbf776062c26e (patch) | |
| tree | 5f8c06787125e59d9c3dabb1a59dc3dd7c6853fa /include/hw/timer | |
| parent | bdc36ce649e2985225fcf9ab4958698fcafb04e9 (diff) | |
hw/timer: Initial commit of Ibex Timer
Add support for the Ibex timer. This is used with the RISC-V
mtime/mtimecmp similar to the SiFive CLINT.
We currently don't support changing the prescale or the timervalue.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-id: 716fdea2244515ce86a2c46fe69467d013c03147.1624001156.git.alistair.francis@wdc.com
Diffstat (limited to 'include/hw/timer')
| -rw-r--r-- | include/hw/timer/ibex_timer.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/hw/timer/ibex_timer.h b/include/hw/timer/ibex_timer.h new file mode 100644 index 0000000000..6a43537003 --- /dev/null +++ b/include/hw/timer/ibex_timer.h @@ -0,0 +1,52 @@ +/* + * QEMU lowRISC Ibex Timer device + * + * Copyright (c) 2021 Western Digital + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef HW_IBEX_TIMER_H +#define HW_IBEX_TIMER_H + +#include "hw/sysbus.h" + +#define TYPE_IBEX_TIMER "ibex-timer" +OBJECT_DECLARE_SIMPLE_TYPE(IbexTimerState, IBEX_TIMER) + +struct IbexTimerState { + /* <private> */ + SysBusDevice parent_obj; + + /* <public> */ + MemoryRegion mmio; + + uint32_t timer_ctrl; + uint32_t timer_cfg0; + uint32_t timer_compare_lower0; + uint32_t timer_compare_upper0; + uint32_t timer_intr_enable; + uint32_t timer_intr_state; + uint32_t timer_intr_test; + + uint32_t timebase_freq; + + qemu_irq irq; +}; +#endif /* HW_IBEX_TIMER_H */ |