opensbi.git/include/sbi/sbi_ecall.h, branch master

include: sbi: Change SBI spec version to 3.0

2025-05-20T08:17:34Z

Now that SBI v3.0 specification is frozen, change runtime SBI version implemented by OpenSBI to v3.0. Also, mark extensions defined by the SBI v3.0 specification as non-experimental. Signed-off-by: Anup Patel Reviewed-by: Clément Léger Reviewed-by: Atish Patra Link: https://lore.kernel.org/r/20250516122844.113423-1-apatel@ventanamicro.com Signed-off-by: Anup Patel

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22T05:46:13Z

Add boot-time prints for list of available standard and experimental SBI extensions. Signed-off-by: Anup Patel

lib: sbi: Pass trap context pointer to sbi_ecall_handler()

2024-03-19T06:01:39Z

To be consistent with other trap handlers, pass trap context pointer to sbi_ecall_handler(). Signed-off-by: Anup Patel Reviewed-by: Samuel Holland Tested-by: Samuel Holland Reviewed-by: Clément Léger

lib: sbi: Allow ecall handlers to directly update register state

2023-12-19T10:26:37Z

Some of the upcoming SBI extensions (such as SSE) will directly update register state so improve the prototype of ecall handler to accommodate this. Further, this flexibility allows us to push the trap redirection from sbi_ecall_handler() to the sbi_ecall_legacy_handler(). Signed-off-by: Anup Patel

include: sbi: Change spec version to 2.0

2023-10-19T11:51:17Z

Now that SBI v2.0 specification is frozen, we change spec version implemented by OpenSBI to v2.0. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones

lib: sbi: Document sbi_ecall_extension members

2023-05-21T11:24:02Z

With the introduction of the register_extensions callback the range members (extid_start and extid_end) may now change and it has become a bit subtle as to when a probe function should be implemented. Document all the members and their relationship to the register_extensions callback. Signed-off-by: Andrew Jones Reviewed-by: Anup Patel

lib: sbi: Introduce register_extensions extension callback

2023-05-21T10:57:38Z

Rather than registering all extensions on their behalf in sbi_ecall_init(), introduce another extension callback and invoke that instead. For now, implement each callback by simply registering the extension, which means this patch has no intended functional change. In later patches, extension callbacks will be modified to choose when to register and to possibly narrow the extension ID range prior to registering. When an extension range needs to remove IDs, leaving gaps, then multiple invocations of sbi_ecall_register_extension() may be used. In summary, later patches for current extensions and the introductions of future extensions will use the new callback to ensure that only valid extension IDs from the initial range, which are also available, will be registered. Signed-off-by: Andrew Jones Reviewed-by: Anup Patel

lib: sbi_ecall: Generate extensions list with carray

2022-10-23T05:30:30Z

Instead of hard-coding the list of extensions in C code, use carray to generate the list of extensions. Using carray makes adding and removing extensions slightly cleaner. This also paves the way for using Kconfig to disable unneeded extensions. Signed-off-by: Vivian Wang Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

include: sbi: Change spec version to 1.0

2022-06-24T03:24:59Z

Now that SBI v1.0 specification is ratified, we change spec verion implemented by OpenSBI to v1.0. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi: Implement SBI PMU extension

2021-07-11T05:08:02Z

RISC-V SBI specfication 0.3 defines a PMU extension that allows supervisor mode to start/stop/configure pmu related events. This patch implements all of the functionality defined in the specification. Reviewed-by: Anup Patel Signed-off-by: Atish Patra