opensbi.git/lib/utils/reset/fdt_reset_htif.c, branch master

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/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

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

lib: utils/sys: Extend HTIF library to allow custom base address

2022-01-11T12:47:49Z

Some of RISC-V emulators provide HTIF at fixed base address so for such emulators users have to hard-code HTIF base address in the linker script. To address this problem, we let users optionally provide fixed HTIF base address via platform support (or device tree). Signed-off-by: Anup Patel Reviewed-by: Dong Du Reviewed-by: Atish Patra

lib: sbi: Simplify system reset platform operations

2021-04-28T11:55:00Z

Instead of having system_reset_check() and system_reset() callbacks in platform operations, it will be much simpler for reset driver to directly register these operations as a device to the sbi_system implementation. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis

lib: sbi: Improve system reset platform operations

2020-12-01T11:40:31Z

To implement the SBI SRST extension, we need two platform operations for system reset: 1) system_reset_check() - This operation will check whether given reset type and reason are supported by the platform 2) system_reset() - This operation will do the actual platform system reset and it will not return if reset type and reason are supported by the platform This patch updates system reset related code everywhere as-per above. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Add simple FDT reset framework

2020-05-01T05:01:37Z

We add simple reset framework which will select and use reset driver based on details in FDT passed by previous booting stage. Signed-off-by: Anup Patel Reviewed-by: Atish Patra