4 Commits

Author	SHA1	Message	Date
Anup Patel	6734304f8c	lib: sbi: Allow specifying start mode to sbi_hsm_hart_start() API ... The sbi_scratch already has provision to specify the next stage mode so we can leverage this to specify start mode to sbi_hsm_hart_start(). In future, this will be useful in providing SBI calls to U-mode on embedded cores where we M-mode and U-mode but no S-mode. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>	2020-09-16 09:05:22 +05:30
Anup Patel	7487116b41	lib: sbi_ecall: Remove mcause, scratch and hartid parameters ... We remove mcause, scratch and hartid parameters from various functions for ecall handling because we can always get current HART id and current scratch pointer using just one CSR access. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>	2020-03-28 13:32:20 +05:30
Anup Patel	19bd531a15	lib: sbi_hsm: Simplify hart_get_state() and hart_started() APIs ... We remove redundant scratch parameter from sbi_hsm_hart_get_state() and sbi_hsm_hart_started() APIs. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>	2020-03-19 09:08:26 +05:30
Atish Patra	e3f69fc1e9	lib: Implement Hart State Management (HSM) SBI extension ... 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 <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>	2020-02-24 18:13:23 +05:30