starfive-tech/opensbi.git/include, branch starfive-dubhe

include: types: Use __builtin_offsetof when supported

2021-07-17T11:10:07+00:00

Clang provides a __builtin_offsetof which can be detected using __has_builtin(). Signed-off-by: Alex Richardson Reviewed-by: Anup Patel

firmware: use __SIZEOF_LONG__ for field offsets in fw_dynamic.h

2021-07-17T11:05:23+00:00

The fields are of type unsigned long and are not pointers. While this happens to be the same for RV32/RV64, it is not correct when compiling for a CHERI-RISC-V system where pointers are twice the size of long. Signed-off-by: Alex Richardson Reviewed-by: Bin Meng Reviewed-by: Anup Patel

lib: utils/gpio: Add simple FDT based GPIO framework

2021-07-17T08:11:17+00:00

We add a simple FDT based GPIO framework which is built on top of generic GPIO library. The phandle of FDT GPIO chip DT node is treated as unique GPIO chip ID required by the generic GPIO library. The FDT based GPIO chip drivers will be probed on-demand from fdt_gpio_pin_get() called by the GPIO client drivers. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/gpio: Add generic GPIO configuration library

2021-07-17T06:12:51+00:00

We add generic GPIO configuration library which is independent of hardware description format (FDT or ACPI). The OpenSBI platform support or GPIO drivers can register GPIO chip instances which can be discovered and used by different GPIO clients. Each GPIO chip instance has a unique ID which can be used by GPIO clients to lookup GPIO chip instance. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/fdt: Add fdt_parse_phandle_with_args() API

2021-07-17T06:10:49+00:00

The libfdt project does not have a generic API to parse phandle with args from a DT node so we add fdt_parse_phandle_with_args() for this purpose. This new API will be useful to FDT based drivers. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

firmware: Define a macro for version of struct fw_dynamic_info

2021-07-11T08:43:32+00:00

Avoid using a magic number, instead use a macro for the version of struct fw_dynamic_info. Signed-off-by: Bin Meng Reviewed-by: Xiang W Reviewed-by: Anup Patel

lib: sbi: Implement SBI PMU extension

2021-07-11T05:08:02+00:00

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

utils: fdt: Add fdt helper functions to parse PMU DT nodes

2021-07-11T04:57:57+00:00

The PMU DT node bindings are defined in docs/pmu_support.md Add few fdt helper functions to parse the DT node and update the event-counter mapping tables. Reviewed-by: Anup Patel Signed-off-by: Atish Patra

lib: sbi: Add PMU support

2021-07-11T04:53:18+00:00

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: sbi: Add PMU specific platform hooks

2021-07-11T04:51:38+00:00

A platform hook to initialize PMU allows platform vendors to provide their own mechanism to define pmu event-counter mappings in addition to the DT based approach. Another platform hook that allows platform vendors customize the final mhpmevent value configuration. Reviewed-by: Anup Patel Signed-off-by: Atish Patra