opensbi.git/lib/sbi/sbi_timer.c, branch v0.8

include: sbi: Use scratch pointer as parmeter in HART feature APIs

2020-05-19T03:49:42Z

It makes more sense to have scratch pointer as parameter in HART feature APIs because: 1. We already have scratch pointer at places where these APIs are used. 2. This is consistent with lot of other APIs in sbi_hart.h Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: timer: Provide a hart based timer feature

2020-05-10T04:44:54Z

As per the RISC-V specification, time value can be obtained from a time CSR implemented in hardware or a MMIO based IP block. Qemu virt machine already supports timer csr while CLINT provides the timer for other platforms. Implement a hart specific timer feature that can be detected at runtime. As CSR based timer implementation are faster than MMIO address based, it is always preferred over MMIO based one. Signed-off-by: Atish Patra Tested-by: Jonathan Balkind Reviewed-by: Anup Patel

include: sbi_timer: Remove scratch parameter from most funcitons

2020-03-28T08:02:55Z

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

lib: Add timer exit API

2020-01-07T06:40:55Z

We add sbi_timer_exit() API for OpenSBI exit path handling in sbi_exit() implementation. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: Emulate HTIMEDELTA CSR for platforms not having TIME CSR

2019-09-30T10:06:14Z

For platforms not having TIME CSR, we trap-n-emulate TIME CSR read/write in OpenSBI. Same rationale applies to HTIMEDELTA CSR as well so we trap-n-emulate HTIMEDELTA CSR for platforms not having TIME CSR. Signed-off-by: Anup Patel

lib: Move sbi core library to lib/sbi

2019-06-19T04:18:51Z

Signed-off-by: Atish Patra Acked-by: Anup Patel