opensbi.git/include/sbi_utils/timer/aclint_mtimer.h, branch master

lib: utils/timer: Expose timer update function

2025-10-28T05:58:06Z

Exposing the ACLINT timer update APIs so the user can update the mtimer after waking up from the non-retentive suspend. Reviewed-by: Cyan Yang Reviewed-by: Anup Patel Signed-off-by: Nick Hu Link: https://lore.kernel.org/r/20251020-cache-upstream-v7-10-69a132447d8a@sifive.com Signed-off-by: Anup Patel

lib: sbi_timer: Call driver warm_init from SBI core

2024-11-05T11:59:13Z

Currently, the platform's timer device is tracked in two places: the core SBI implementation has `timer_dev`, and the FDT timer layer has `current_driver`. The latter is used for warm initialization of the timer device. However, this warm init is not specific to FDT-based platforms; other platforms call exactly the same functions from the same point in the boot sequence. The code is simplified and made common across platforms by treating warm init and exit as properties of the driver, not the platform. Then the platform's only role is to select and prepare a driver during cold boot. For now, only add a .warm_init hook, since none of the existing drivers need an .exit hook. It could be added in the future if needed. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi: Add sbi_domain_root_add_memrange() API

2022-10-23T04:51:21Z

This patch generalizes the logic to add a memory range with desired alignment and flags of consecutive regions to the root domain. Signed-off-by: Yu Chien Peter Lin Reviewed-by: Anup Patel

lib: sbi: Add timer frequency to struct sbi_timer_device

2021-09-26T14:22:10Z

Generic mdelay() and udelay() functions can be provided by the sbi_timer framework if timer frequency is available in the timer instance provided by the platform support or timer driver. This patch adds timer frequency (timer_freq) member in the struct sbi_timer_device for above purpose. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Xiang W

lib: utils/timer: Simplify MTIMER synchronization

2021-08-14T03:37:42Z

We simplify MTIMER synchronization as follows: 1) Detect MTIMER devices with unique (or non-shared) MTIME register at boot-time 2) Select first MTIMER device with no associated HART as our reference MTIMER device 3) Only synchronize MTIMER devices with unique (or non-shared) MTIME register using reference MTIMER device 4) Directly update the MTIME register at time of synchronization because MTIME is a read/write register. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/timer: Allow separate base addresses for MTIME and MTIMECMP

2021-08-14T03:32:33Z

We extend the ACLINT library to support separate base addresses for MTIME and MTIMECMP registers. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/timer: Add ACLINT MTIMER library

2021-06-24T04:08:47Z

We add common ACLINT MTIMER library similar to the CLINT library so that OpenSBI platforms can use it. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Xiang W