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[Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg
From: |
Paul Zimmerman |
Subject: |
[Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed. |
Date: |
Thu, 17 Sep 2020 09:08:24 -0000 |
Something very strange is going on with the dwc_otg driver in
2016-05-27-raspbian-jessie.img. Something is reading and writing incrementally
throughout the register space of the hcd-dwc2 host.
And adding the "dwc_otg.fiq_fsm_enable=0" kernel option does not fix it.
Brendan, Petunia, is there a reason why you are testing with such an old
version of Raspbian? I used 2019-09-26-raspbian-buster.img when
developing the hcd-dwc2 emulation, and it works fine, other than needing
the "dwc_otg.fiq_fsm_enable=0" kernel option.
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https://bugs.launchpad.net/bugs/1892604
Title:
qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion
`addr <= GINTSTS2' failed.
Status in QEMU:
New
Bug description:
When trying to run the 2016-05-27 Raspbian image on the emulated
raspi2 platform, the system boots but shortly after the login prompt
QEMU (master; commit ID ca489cd037e4d50dc6c40570a167504ad7e5a521) dies
with:
qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion
`addr <= GINTSTS2' failed.
Steps to reproduce:
1. Get the image: wget
http://downloads.raspberrypi.org/raspbian/images/raspbian-2016-05-31/2016-05-27
-raspbian-jessie.zip
2. Extract the kernel image and DTB:
sudo losetup -f --show -P 2016-05-27-raspbian-jessie.img
sudo mkdir /mnt/rpi
sudo mount /dev/loop11p1 /mnt/rpi/
cp /mnt/rpi/kernel7.img .
cp /mnt/rpi/bcm2709-rpi-2-b.dtb .
sudo umount /mnt/rpi
sudo losetup -d /dev/loop11
3. Run QEMU:
qemu-system-arm -M raspi2 -m 1G -dtb bcm2709-rpi-2-b.dtb -kernel kernel7.img
-append "rw earlyprintk loglevel=8 console=ttyAMA0,115200 dwc_otg.lpm_enable=0
root=/dev/mmcblk0p2" -sd 2016-05-27-raspbian-jessie.img -smp 4 -serial stdio
-display none
A few seconds after the login prompt is displayed, QEMU will exit with
the assertion failure.
I also tried changing all of the asserts to if statements that (for
MMIO reads) returned 0 and (for writes) just returned, but this
resulted in a non-responsive system.
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- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Petunia, 2020/09/15
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Brendan Dolan-Gavitt, 2020/09/15
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Petunia, 2020/09/15
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Paul Zimmerman, 2020/09/15
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Petunia, 2020/09/15
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Paul Zimmerman, 2020/09/15
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed.,
Paul Zimmerman <=
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Paul Zimmerman, 2020/09/17
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Brendan Dolan-Gavitt, 2020/09/18
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Paul Zimmerman, 2020/09/19
- [Bug 1892604] Re: qemu-system-arm: ../hw/usb/hcd-dwc2.c:666: dwc2_glbreg_read: Assertion `addr <= GINTSTS2' failed., Paul Zimmerman, 2020/09/20