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[PATCH v3 0/3] Implement Sstc extension
From: |
Atish Patra |
Subject: |
[PATCH v3 0/3] Implement Sstc extension |
Date: |
Mon, 9 May 2022 14:28:24 -0700 |
This series implements Sstc extension[1] which was ratified recently.
The first patch is a prepartory patches while PATCH 2 adds stimecmp
support while PATCH 3 adds vstimecmp support. This series is based on
on top of upstream commit (faee5441a038).
The series can also be found at
https://github.com/atishp04/qemu/tree/sstc_v3
It is tested on RV32 & RV64 with latest OpenSBI & Linux kernel[2]
patches. It does require the mcountinhibi support patch from PMU series[3]
or dummy one from Anup's series [4]. Otherwise, OpenSBI doesn't detect v1.12
priv version.
Changes from v2->v3:
1. Dropped generic migration code improvement patches.
2. Removed the order constraints while updating stimecmp/vstimecmp.
Changes from v1->v2:
1. Rebased on the latest upstream commit.
2. Replaced PATCH 1 with another patch where mtimer/timecmp is
moved from CPU to ACLINT.
3. Added ACLINT migration support.
[1] https://drive.google.com/file/d/1m84Re2yK8m_vbW7TspvevCDR82MOBaSX/view
[2] https://github.com/atishp04/linux/tree/sstc_v3
[3] https://github.com/atishp04/qemu/tree/riscv_pmu_v7
[4] https://www.mail-archive.com/qemu-devel@nongnu.org/msg885157.html
Atish Patra (3):
hw/intc: Move mtimer/mtimecmp to aclint
target/riscv: Add stimecmp support
target/riscv: Add vstimecmp support
hw/intc/riscv_aclint.c | 41 +++++--
hw/timer/ibex_timer.c | 18 ++-
include/hw/intc/riscv_aclint.h | 2 +
include/hw/timer/ibex_timer.h | 2 +
target/riscv/cpu.c | 8 ++
target/riscv/cpu.h | 14 ++-
target/riscv/cpu_bits.h | 8 ++
target/riscv/cpu_helper.c | 11 +-
target/riscv/csr.c | 200 +++++++++++++++++++++++++++++++++
target/riscv/machine.c | 7 +-
target/riscv/meson.build | 3 +-
target/riscv/time_helper.c | 114 +++++++++++++++++++
target/riscv/time_helper.h | 30 +++++
13 files changed, 426 insertions(+), 32 deletions(-)
create mode 100644 target/riscv/time_helper.c
create mode 100644 target/riscv/time_helper.h
--
2.25.1
- [PATCH v3 0/3] Implement Sstc extension,
Atish Patra <=