opensbi.git/include/sbi/sbi_ecall_interface.h, branch v1.3

lib: sbi_pmu: Align the event type offset as per SBI specification

2023-04-07T04:36:59Z

The bits encoded in event_idx[19:16] indicate the event type, with an offset of 16 instead of 20. Fixes: 13d40f21d588 ("lib: sbi: Add PMU support") Signed-off-by: Yu Chien Peter Lin Reviewed-by: Andrew Jones Reviewed-by: Xiang W

include: Add defines for SBI CPPC extension

2023-04-07T04:05:06Z

Add SBI CPPC extension related defines to the SBI ecall interface header. Signed-off-by: Sunil V L Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

lib: sbi_pmu: Reserve space for implementation specific firmware events

2023-03-10T08:30:22Z

We reserve space for SBI implementation specific custom firmware events which can be used by M-mode firmwares and HS-mode hypervisors for their own use. This reserved space is intentionally large to ensure that SBI implementation has enough space to accommodate platform specific firmware events as well. Signed-off-by: Mayuresh Chitale Reviewed-by: Atish Patra Reviewed-by: Anup Patel

lib: sbi_pmu: Implement sbi_pmu_counter_fw_read_hi

2023-03-10T08:30:07Z

To support 64 bit firmware counters on RV32 systems, we implement sbi_pmu_counter_fw_read_hi() which returns the upper 32 bits of the firmware counter value. On RV64 (or higher) systems, this function will always return zero. Signed-off-by: Mayuresh Chitale Reviewed-by: Atish Patra Reviewed-by: Anup Patel

lib: sbi: Add system suspend skeleton

2023-02-27T14:13:52Z

Add the SUSP extension probe and ecall support, but for now the system suspend function is just a stub. Signed-off-by: Andrew Jones Reviewed-by: Anup Patel

include: Add defines for SBI debug console extension

2023-02-09T16:51:24Z

We add SBI debug console extension related defines to the SBI ecall interface header. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones Reviewed-by: Atish Patra Reviewed-by: Bin Meng Reviewed-by: Xiang W

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