From: Anup Patel <anup.pa...@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.pa...@wdc.com> Signed-off-by: Anup Patel <a...@brainfault.org> Reviewed-by: Alistair Francis <alistair.fran...@wdc.com> Reviewed-by: Frank Chang <frank.ch...@sifive.com> Message-Id: <20220220085526.808674-5-a...@brainfault.org> Signed-off-by: Alistair Francis <alistair.fran...@wdc.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 -------------------- -- 2.35.1
