opensbi.git/lib/sbi/sbi_system.c, branch v0.7

include: sbi_system: Remove scratch parameter and redundant functions

2020-03-28T08:02:52Z

This patch removes scratch parameter and redundant functions from sbi_system. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

include: sbi_ipi: Remove scratch parameter from most functions

2020-03-28T08:02:47Z

This patch removes scratch parameter from most sbi_ipi functions. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi_hsm: Remove scratch parameter from hart_started_mask() API

2020-03-19T03:53:12Z

The scratch parameter in sbi_hsm_hart_started_mask() API is now redundant hence removing it. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Atish Patra

include: Make sbi_current_hartid() as macro in riscv_asm.h

2020-03-13T06:52:02Z

The sbi_current_hartid() being a regular function is quite expensive because for callers it is a function call instead of a direct CSR read. This patch converts sbi_current_hartid() into a macro in riscv_asm.h. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi_system: Use sbi_hsm_hart_started_mask() API

2020-03-11T10:00:23Z

This patch replaces use of sbi_hart_available_mask() API with sbi_hsm_hart_started_mask() API. Signed-off-by: Anup Patel Reviewed-by: Bin Meng

include: Move bits related defines and macros to sbi_bitops.h

2020-03-08T05:36:18Z

The right location for all bits related defines and macros is sbi_bitops.h hence this patch. With this patch, the sbi_bits.h is redundant so we remove it. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

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: Introduce sbi_ipi_send_halt() API

2020-01-22T06:40:37Z

Instead of directly calling sbi_ipi_send_many(), we introduce sbi_ipi_send_halt() for halting a set of HARTs. This way in future we can assign any IPI event number for HART halting within sbi_ipi.c only. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: improve system reboot and shutdown implementation

2020-01-07T06:41:36Z

We improve sbi_system_reboot() an sbi_system_shutdown() by: 1. Calling halt IPI to all harts (except current HART) before calling platform reboot/shutdown hook. 2. Calling sbi_exit() instead of sbi_hang() in-case platform reboot/shutdown hook failed. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: Add system early_exit and final_exit APIs

2020-01-07T06:40:48Z

This patch adds system-level early_exit and final_exit APIs with corresponding platform hooks. These new APIs will be primarily used by sbi_exit() in OpenSBI exit path. Signed-off-by: Anup Patel Reviewed-by: Atish Patra