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3 Commits

Author SHA1 Message Date
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