opensbi.git/lib/utils/reset, branch v1.7

lib: rpmi: Make RPMI drivers as non-experimental

2025-06-24T03:12:27Z

As RPMI v1.0 specification is frozen, disable the experimental tag for such RPMI drivers. Signed-off-by: Rahul Pathak Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20250618053854.2577299-2-rpathak@ventanamicro.com Signed-off-by: Anup Patel

lib: sbi: Use sbi_hart_count() and sbi_for_each_hartindex()

2025-03-24T12:27:20Z

Simplify the code and improve consistency by using the new macros where possible. sbi_hart_count() obsoletes sbi_scratch_last_hartindex(). Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils: Constify FDT driver definitions

2025-02-19T12:17:24Z

The carray referencing these definitions assumes they are const. Fixes: 6a26726e08e4 ("lib/utils: reset: Add RPMI System Reset driver") Fixes: 13f55f33a1d3 ("lib: utils/suspend: Add RPMI system suspend driver") Fixes: 33ee9b8240fe ("lib: utils/hsm: Add RPMI HSM driver") Fixes: 591a98bdd549 ("lib: utils/cppc: Add RPMI CPPC driver") Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils: Initialize miscellaneous drivers in one pass

2025-02-12T16:09:25Z

For driver subsystems that are not tightly integrated into the OpenSBI init sequence, it is not important that the drivers are initialized in any particular order. By putting all of these drivers in one array, they can all be initialized with a single pass through the devicetree. This saves about 10 ms of boot time on HiFive Unmatched. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils: Mark RPMI drivers as experimental

2024-12-21T12:52:47Z

These drivers were merged on an experimental basis without the RPMI specification being frozen. As a result, they may not be compatible with the frozen version of the RPMI protocol. Additionally, their devicetree bindings have not been reviewed and are subject to change. Warn the user that these drivers make no compatibility guarantees, and that their behavior and devicetree bindings may change incompatibly in future versions of OpenSBI. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib/utils: reset: Add RPMI System Reset driver

2024-12-06T03:56:27Z

Add RPMI based driver for system reset and enable it in the generic platform defconfig Signed-off-by: Rahul Pathak Signed-off-by: Anup Patel

lib: utils/reset: Use fdt_driver for initialization

2024-11-28T12:18:17Z

The reset driver subsystem does not need any extra data, so it can use `struct fdt_driver` directly. The generic fdt_reset_init() performs a best-effort initialization of all matching DT nodes. Platform-specific logic expects exactly one DT node to match a single driver. This is accomplished by using fdt_driver_init_one() with a local list containing that one driver. 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

lib: utils/reset: Pass the FDT to fdt_reset_init()

2024-08-24T07:32:58Z

Indicate that this function does not modify the FDT blob, and deduplicate the call to fdt_get_address(). Signed-off-by: Samuel Holland Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

lib: utils/reset: Constify FDT pointers in parsing functions

2024-08-24T07:32:42Z

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