diff options
| author | Anup Patel <anup.patel@wdc.com> | 2021-05-20 11:01:57 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2021-06-24 09:38:47 +0530 |
| commit | 4519e29c51315205119ce03ff0e5152def647ed5 (patch) | |
| tree | d9e081487bb0a64209a23b73b4c9ad2159270ee9 /include | |
| parent | 11c345f14a3e3c67e688024094f72de4f92c87a4 (diff) | |
lib: utils/timer: Add ACLINT MTIMER library
We add common ACLINT MTIMER library similar to the CLINT library
so that OpenSBI platforms can use it.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sbi_utils/timer/aclint_mtimer.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/sbi_utils/timer/aclint_mtimer.h b/include/sbi_utils/timer/aclint_mtimer.h new file mode 100644 index 0000000..62aa086 --- /dev/null +++ b/include/sbi_utils/timer/aclint_mtimer.h @@ -0,0 +1,41 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2021 Western Digital Corporation or its affiliates. + * + * Authors: + * Anup Patel <anup.patel@wdc.com> + */ + +#ifndef __TIMER_ACLINT_MTIMER_H__ +#define __TIMER_ACLINT_MTIMER_H__ + +#include <sbi/sbi_types.h> + +#define ACLINT_MTIMER_ALIGN 0x1000 +#define ACLINT_MTIMER_SIZE 0x8000 +#define ACLINT_MTIMER_MAX_HARTS 4095 + +#define CLINT_MTIMER_OFFSET 0x4000 + +struct aclint_mtimer_data { + /* Public details */ + unsigned long addr; + unsigned long size; + u32 first_hartid; + u32 hart_count; + bool has_64bit_mmio; + /* Private details (initialized and used by ACLINT MTIMER library) */ + struct aclint_mtimer_data *time_delta_reference; + unsigned long time_delta_computed; + u64 time_delta; + u64 (*time_rd)(volatile u64 *addr); + void (*time_wr)(bool timecmp, u64 value, volatile u64 *addr); +}; + +int aclint_mtimer_warm_init(void); + +int aclint_mtimer_cold_init(struct aclint_mtimer_data *mt, + struct aclint_mtimer_data *reference); + +#endif |