Re: [PATCH 3/3] hw/mips: Add MIPS virt board

[Jiaxun Yang]

Ping?

> 2023年2月6日 01:08，Jiaxun Yang <jiaxun.yang@flygoat.com> 写道：
> 
> 
> 
>> 2023年2月5日 11:48，Philippe Mathieu-Daudé <philmd@linaro.org> 写道：
>> 
>> Hi Jiaxun,
>> 
>> On 2/2/23 14:21, Jiaxun Yang wrote:
>>> MIPS virt board is design to utilize existing VirtIO infrastures
>>> but also comptitable with MIPS's existing internal simulation tools.
>>> It includes virtio-mmio, pcie gpex, flash rom, fw_cfg, goldfish-rtc,
>>> and optional goldfish_pic in case MIPS GIC is not present.
>> 
>> Is it worth using the CPS/GIC? Can't we using the goldfish PIC
>> regardless CPS availability? Did you run performance comparison?
> 
> goldfish_pic don’t have IPI infra so we must reinvent another SMP mechanism 
> :-(
> 
> The interrupt performance should be close as the interrupt handling flow is 
> almost
> the same.
> 
> Also it can help us prepare for I6400 vGIC support.
> 
> Thanks.
> - Jiaxun
> 
> 
>> 
>>> It should be able to cooperate with any MIPS CPU cores.
>>> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
>>> ---
>>> v1:
>>> - Rename to virt board
>>> - Convert BIOS flash to ROM
>>> - Cleanups
>>> ---
>>> MAINTAINERS                             |    7 +
>>> configs/devices/mips-softmmu/common.mak |    1 +
>>> docs/system/target-mips.rst             |   24 +
>>> hw/mips/Kconfig                         |   18 +
>>> hw/mips/meson.build                     |    1 +
>>> hw/mips/virt.c                          | 1015 +++++++++++++++++++++++
>>> 6 files changed, 1066 insertions(+)
>>> create mode 100644 hw/mips/virt.c
>> 
> 
>