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

include: sbi: Add SBI_ERR_DENIED_LOCKED

2025-02-19T16:40:59Z

Add SBI_ERR_DENIED_LOCKED and set it as the SBI_LAST_ERR which was wrongly set to SBI_ERR_BAD_RANGE. Signed-off-by: Clément Léger Reviewed-by: Anup Patel

lib: sbi: Add SBI Message Proxy (MPXY) framework

2024-12-06T03:56:50Z

Introduce SBI Message Proxy (MPXY) framework which allows platform specific code or drivers to register message protocol specific channels. This framework enables the supervisor software to send messages belonging to different message protocols via OpenSBI firmware. Signed-off-by: Rahul Pathak Co-developed-by: Himanshu Chauhan Signed-off-by: Himanshu Chauhan Co-developed-by: Anup Patel Signed-off-by: Anup Patel

lib: sbi: Add support for Supervisor Software Events extension

2024-04-05T10:17:30Z

This extension [1] allows to deliver events from SBI to supervisor via a software mechanism. This extension defines events (either local or global) which are signaled by the SBI on specific signal sources (IRQ, exceptions, etc) and are injected to be executed in supervisor mode. [1] https://lists.riscv.org/g/tech-prs/message/798 Signed-off-by: Clément Léger Reviewed-by: Himanshu Chauhan Reviewed-by: Anup Patel

lib: sbi: Remove the SBI_ETRAP error code

2023-12-19T10:26:37Z

The SBI_ETRAP error code was introduced only for doing trap redirection in generic sbi_ecall_handler(). Now the trap redirection is moved into sbi_ecall_legacy.c and SBI_ETRAP error code is only used in this source file so let us remove it. Signed-off-by: Anup Patel

lib: sbi_pmu: Add PMU snapshot definitions

2023-12-08T17:20:21Z

OpenSBI doesn't support SBI PMU snapshot yet as there is not much benefit unless the multiple counters overflow at the same time. Just add the definition and return not supported error at this moment. The default returned error is also not supported. Thus, no functional change intended. Reviewed-by: Anup Patel Signed-off-by: Atish Patra

lib: sbi: Add PMU support

2021-07-11T04:53:18Z

RISC-V SBI v0.3 specification defined a PMU extension to configure/start/stop the hardware/firmware pmu events. Implement PMU support in OpenSBI library. The implementation is agnostic of event to counter mapping & mhpmevent value configuration. That means, it expects platform hooks will be used to set up the mapping and provide the mhpmevent value at runtime. Reviewed-by: Anup Patel Signed-off-by: Atish Patra

lib: Don't return any invalid error from SBI ecall

2020-06-20T05:06:13Z

We should only return valid error codes from SBI ecalls as defined by the RISC-V SBI spec. To achieve this: 1. We use SBI_Exxxx defines for OpenSBI internal errors with error values starting from -1000 2. We use SBI_ERR_xxxx defines for errors defined by SBI spec 3. We map some of the SBI_Exxxx defines to SBI_ERR_xxxx defines which are semantically same 4. We throw a error print and force return error code to SBI_ERR_FAILED in sbi_ecall_handler() if we see an invalid error code being returned to S-mode Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi: Fix coding style issues

2020-03-10T04:57:28Z

This fixes various coding style issues found in the SBI codes. No functional changes. Signed-off-by: Bin Meng Reviewed-by: Anup Patel

lib: Implement hart hotplug

2020-02-24T12:37:55Z

This patch adds support for hart hotplug in OpenSBI using a generic WFI based approach. Hart hotplug can be achieved via SBI HSM extension which allows supervisor mode software to start or stop any harts anytime. Any platform wishes to implement platform specific hart hotplug must implement both hart_start and hart_stop in addition to enable platform feature SBI_PLATFORM_HAS_HART_HOTPLUG. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

lib: Align error codes as per SBI specification.

2019-10-03T03:22:54Z

Follow the SBI specification for error codes. Signed-off-by: Atish Patra Reviewed-by: Anup Patel