opensbi.git/lib/sbi/sbi_init.c, branch v1.2

lib: sbi: Print platform PMU device at boot-time

2022-09-01T11:23:25Z

Let us print the platform PMU device name at the boot-time so that users know whether the underlying platform has custom per-HART PMU operations. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones Reviewed-by: Atish Patra

lib: sbi: Convert hart features into hart extensions

2022-05-07T04:46:30Z

Since past few years, we have been using "hart features" in OpenSBI to represent all optionalities and multi-letter extensions defined by the RISC-V specifications. The RISC-V profiles specification has taken a different approach and started assigning extension names for all optionalities which did not have any extension name previously. (Refer, https://github.com/riscv/riscv-profiles/blob/main/profiles.adoc) Inspired from the RISC-V profiles specification, we convert OpenSBI hart features into hart extensions. Going forward, we align the extension naming with RISC-V profiles specification. Currently, only "time CSR" and "AIA CSR" have not been assigned extension name but for everything else we have a name. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi: Update the name of ISA string printed at boot time

2022-05-07T04:33:24Z

The ISA string printed at boot time is not the complete ISA string representing all single letter and multi-letter extensions rather it is base ISA string derived from misa CSR so let us update the boot print accordingly. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi: Detect and print privileged spec version

2022-05-07T04:19:54Z

It is possible to guess privileged spec versions based on the CSRs that where introduced in different privileged spec versions. In future, if we are not able guess privileged spec version then we can have platform provide it. We add privileged spec version as per-hart feature and try to guess it based on presence of mcounteren, mcountinhibit, and menvcfg CSRs. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi: Add a simple external interrupt handling framework

2022-02-28T04:13:12Z

Currently, the external interrupt handling is scattered between sbi_init and sbi_trap. This patch moves all external interrupt handling into a simple framework called sbi_irqchip. Signed-off-by: Anup Patel Reviewed-by: Xiang W Reviewed-by: Atish Patra

lib: sbi: Enable mie.MEIE bit for IPIs based on external interrupts.

2022-02-15T15:05:45Z

We can have IPIs based on external interrupts provided by devices such as AIA IMSIC so we should enable mie.MEIE bit at appropriate places in generic library. Signed-off-by: Anup Patel Signed-off-by: Anup Patel Reviewed-by: Atish Patra

include: sbi: Introduce nascent_init() platform callback

2022-02-15T15:04:24Z

We introduce nascent_init() platform callback which will allow platforms to do very early initialization of platform specific per-HART CSRs and per-HART devices. Signed-off-by: Anup Patel Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi: move sbi_boot_print_general()

2021-11-08T05:09:31Z

Moving the sbi_boot_print_general() call after the sbi_platform_final_init() call allows to print devices initialized in the latter. To keep the overall print sequence the same also move sbi_boot_print_domains(). Signed-off-by: Heinrich Schuchardt Reviewed-by: Anup Patel

Makefile: Add build time and compiler info string

2021-10-20T09:40:52Z

When we are doing opensbi development, we want to know the build time and compiler info for debug purpose. To enable this message, please add "BUILD_INFO=y", like: ``` make BUILD_INFO=y ``` NOTE: Using `BUILD_INFO=y` without specifying SOURCE_DATE_EPOCH will violate "reproducible builds". So it's ONLY for development and debug purpose, and should NOT be used in a product which follows "reproducible builds". Signed-off-by: Wei Fu Reviewed-by: Anup Patel Reviewed-by: Alistair Francis

lib: sbi: convert reset to list

2021-10-11T04:29:29Z

To support different handlers for different types of resets, we are adding a sbi_list of restart handlers. Instead of sbi_system_reset_set_device we use sbi_system_reset_add_device to reflect the actual meaning. Signed-off-by: Nikita Shubin Reviewed-by: Anup Patel