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[PATCH v10 4/5] docs/system: riscv: Document AIA options for virt machin
From: |
Anup Patel |
Subject: |
[PATCH v10 4/5] docs/system: riscv: Document AIA options for virt machine |
Date: |
Sun, 20 Feb 2022 14:25:25 +0530 |
From: Anup Patel <anup.patel@wdc.com>
We have two new machine options "aia" and "aia-guests" available
for the RISC-V virt machine so let's document these options.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
---
docs/system/riscv/virt.rst | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/docs/system/riscv/virt.rst b/docs/system/riscv/virt.rst
index 08ce3c4177..1272b6659e 100644
--- a/docs/system/riscv/virt.rst
+++ b/docs/system/riscv/virt.rst
@@ -63,6 +63,22 @@ The following machine-specific options are supported:
When this option is "on", ACLINT devices will be emulated instead of
SiFive CLINT. When not specified, this option is assumed to be "off".
+- aia=[none|aplic|aplic-imsic]
+
+ This option allows selecting interrupt controller defined by the AIA
+ (advanced interrupt architecture) specification. The "aia=aplic" selects
+ APLIC (advanced platform level interrupt controller) to handle wired
+ interrupts whereas the "aia=aplic-imsic" selects APLIC and IMSIC (incoming
+ message signaled interrupt controller) to handle both wired interrupts and
+ MSIs. When not specified, this option is assumed to be "none" which selects
+ SiFive PLIC to handle wired interrupts.
+
+- aia-guests=nnn
+
+ The number of per-HART VS-level AIA IMSIC pages to be emulated for a guest
+ having AIA IMSIC (i.e. "aia=aplic-imsic" selected). When not specified,
+ the default number of per-HART VS-level AIA IMSIC pages is 0.
+
Running Linux kernel
--------------------
--
2.25.1
- [PATCH v10 0/5] QEMU RISC-V AIA support, Anup Patel, 2022/02/20
- [PATCH v10 1/5] hw/riscv: virt: Add optional AIA APLIC support to virt machine, Anup Patel, 2022/02/20
- [PATCH v10 2/5] hw/intc: Add RISC-V AIA IMSIC device emulation, Anup Patel, 2022/02/20
- [PATCH v10 3/5] hw/riscv: virt: Add optional AIA IMSIC support to virt machine, Anup Patel, 2022/02/20
- [PATCH v10 4/5] docs/system: riscv: Document AIA options for virt machine,
Anup Patel <=
- [PATCH v10 5/5] hw/riscv: virt: Increase maximum number of allowed CPUs, Anup Patel, 2022/02/20
- Re: [PATCH v10 0/5] QEMU RISC-V AIA support, Alistair Francis, 2022/02/21