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[Qemu-devel] [Bug 1772165] Re: arm raspi2/raspi3 emulation has no USB su
From: |
Aditya Govardhan |
Subject: |
[Qemu-devel] [Bug 1772165] Re: arm raspi2/raspi3 emulation has no USB support |
Date: |
Mon, 22 Jul 2019 20:19:32 -0000 |
After reading change logs, I believe USB support for raspi2/raspi3 is
not added yet. Which means host internet network can't be accessed by
emulated machine.
I would be glad to help in documentation of differences between real
Raspberry Pi devices and QEMU emulated raspi2/raspi3 since I have seen a
lot of tutorials on internet trying to use QEMU for emulating raspberry
pi. These tutorials most of the times are just hacks, like using
versatilepb or using custom kernel instead of the Raspbian OS.
I have gathered as much info as possible over the last week through
these tutorials, QEMU raspi code and change logs, and believe a good
documentation of this info could help future users trying to emulate
raspi.
Finally, I am able to run latest Raspbian OS (2019-07-10) lite version
on raspi2 using the following command where I have extracted kernel
image and dtb file from second partition:
qemu-system-arm -M raspi2 -kernel bootpart/kernel7l.img -dtb
bootpart/bcm2709-rpi-2-b.dtb -drive file=2019-07-10-raspbian-buster-
lite.img,format=raw,if=sd -append "rw console=ttyAMA0 loglevel=8
root=/dev/mmcblk0p2 fsck.repair=yes rootwait memtest=1" -serial stdio
I am not able to connect network devices, not able to use images other
than lite image (https://bugs.launchpad.net/qemu/+bug/1837347) and
unsure why this command is showing Hardware name as BCM2835 when the
QEMU raspi code has BCM2836 associated with raspi2
(https://github.com/qemu/qemu/blob/59c58f96b270f5edd4ad10954c3a96556cb3a728/hw/arm/bcm2836.c#L31).
I highly appreciate the support provided for raspi2 and raspi3 till now.
Thank you.
--
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https://bugs.launchpad.net/bugs/1772165
Title:
arm raspi2/raspi3 emulation has no USB support
Status in QEMU:
Confirmed
Bug description:
Using Qemu 2.12.0 on ArchLinux.
Trying to emulate arm device with `qemu-system-arm` and attach usb
device for unput using
` -usb -device usb-host,bus=001,vendorid=0x1d6b,productid=0x0002 `
# lsusb returns
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 014: ID 13d3:3487 IMC Networks
Bus 001 Device 004: ID 0457:11af Silicon Integrated Systems Corp.
Bus 001 Device 003: ID 0bda:57e6 Realtek Semiconductor Corp.
Bus 001 Device 002: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card
Reader Controller
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
# qemu returns
qemu-system-arm: -device usb-host,bus=001,vendorid=0x1d6b,productid=0x0002:
Bus '001' not found
Tried with connecting external usb keyboard but that didn't seem to work
either.
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- [Qemu-devel] [Bug 1772165] Re: arm raspi2/raspi3 emulation has no USB support,
Aditya Govardhan <=