opensbi.git/lib/utils/timer, branch release-1.8.x

lib: utils/timer: mtimer: add MIPS P8700 compatible

2025-11-10T08:11:53Z

The MTIMER of the MIPS P8700 is compliant with the ACLINT specification, so add a compatible string for it. Signed-off-by: Benoît Monin Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20251107-p8700-aclint-v3-2-93eabb17d54e@bootlin.com Signed-off-by: Anup Patel

lib: utils/timer: mtimer: Select the reference mtimer from a DT property

2025-11-10T08:11:53Z

The current selection of the reference MTIMER may fail in some setup. In a multi-cluster configuration, there is one MTIMER per cluster, each associated with the HARTS of the cluster. So we do not have a MTIMER with no associated HARTs to use as our reference. To be able to select a reference MTIMER in that case, look up an optional device tree property named "riscv,reference-mtimer" that indicate which MTIMER is the reference. Signed-off-by: Benoît Monin Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20251107-p8700-aclint-v3-1-93eabb17d54e@bootlin.com Signed-off-by: Anup Patel

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: utils/timer: mtimer: Add SiFive CLINT v2 support

2025-10-21T14:02:08Z

The SiFive CLINT v2 is the HRT that supports the Zicntr extension. It is incompatible with the SiFive CLINT v0 due to differences in their control methods. Signed-off-by: Vincent Chen Signed-off-by: Yong-Xuan Wang Co-developed-by: Yong-Xuan Wang Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250917105224.78291-1-yongxuan.wang@sifive.com Signed-off-by: Anup Patel

lib: utils/timer: Use fdt_driver for initialization

2024-11-28T12:27:20Z

The timer driver subsystem does not need any extra data, so it can use `struct fdt_driver` directly. The generic fdt_timer_init() performs a best-effort initialization of all matching DT nodes. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

treewide: Make carray arrays const and NULL-terminated

2024-11-28T11:39:17Z

This allows the compiler to generate significantly better code, because it does not have to maintain either the loop counter or loop limit. Plus there are half as many symbols to relocate. This also simplifies passing carray arrays to helper functions. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

platform: Drop timer warm init and exit hooks

2024-11-05T12:09:31Z

Now that driver lifecycle is managed from within the SBI timer core, platforms need only to initialize the driver once during cold init. Remove the remaining platform hooks that are no longer used. Signed-off-by: Samuel Holland Reviewed-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: utils/timer: Constify FDT pointers in parsing functions

2024-08-24T07:32:48Z

Indicate that none of these functions modify the devicetree by constifying the parameter type. Signed-off-by: Samuel Holland Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

Makefile: change to using .carray.c for carray files

2024-07-04T06:41:45Z

We would like to clean any files generated by the carray scripts by just searching for the filename as the current make system turns f.carray into f.o. Change to make the make system turn f.carray into f.carray.o note, command to go through .mk files changing the .o in the .mk files is: find . -type f -name "*.carray" | xargs -t -I fname /bin/bash -x -c ' fn=`basename -s .carray fname`; echo "$fn"; sed -i `dirname fname `/objects.mk -e s/"$fn".o/"$fn".carray.o/g' Link: https://patchwork.ozlabs.org/project/opensbi/patch/20240401213438.590209-2-ivan.orlov0322@gmail.com/ Reported-by: Ivan Orlov Suggested-by: Andrew Jones Signed-off-by: Ben Dooks Reviewed-by: Andrew Jones Reviewed-by: Anup Patel