opensbi.git/include/sbi/sbi_ecall_interface.h, branch v1.2

lib: sbi: Add the bound check for events during config match

2022-07-30T05:52:50Z

Currently, there is no sanity check for firmware event code. We don't see any issue as Linux kernel driver does a bound check on firmware events already. However, OpenSBI can't assume sane supervisor mode software always. Thus, an invalid event idx can cause a buffer overflow error. For hardware events, the match will fail for invalid event code anyways. However, a search is unecessary if event code is invalid. Add a event ID validation function to solve the issue. Signed-off-by: Atish Patra Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

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

include: sbi: SBI function IDs for RFENCE extension

2021-03-12T04:02:53Z

The SBI function IDs for RFENCE extension must match the SBI specification. Signed-off-by: Heinrich Schuchardt Reviewed-by: Atish Patra

include: sbi: Add HSM suspend related defines

2021-03-03T04:49:13Z

This patch adds SBI HSM suspend related defines to ecall interface header. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

include: sbi: Simplify HSM state define names

2021-03-03T04:47:35Z

We simplify HSM state define names so that these defines can directly replace SBI_HART_xyz defines used by SBI HSM implementation. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

include: sbi: Add SBI SRST extension related defines

2020-12-01T11:33:50Z

We extend the SBI ecall interface header for the SBI SRST extension recently accepted in SBI specification v0.3-draft. Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-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

include: sbi: Add firmware extension constants

2020-05-19T03:52:44Z

Cc: Abner Chang Signed-off-by: Daniel Schaefer Reviewed-by: Anup Patel

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 State Management (HSM) SBI extension

2020-02-24T12:43:23Z

This patch adds support HSM extension. The specification is available at https://github.com/riscv/riscv-sbi-doc. It allows to implement hart hotplug and fixed ordered hart booting in supervisor. Signed-off-by: Atish Patra Reviewed-by: Anup Patel