From: David Aghaian <1895895@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1895895] [NEW] Attaching SD-Card to specific SD-Bus Sabrelite (ARM)
Date: Wed, 16 Sep 2020 21:21:27 -0000 [thread overview]
Message-ID: <160029128826.621.15541420718494673931.malonedeb@chaenomeles.canonical.com> (raw)
Public bug reported:
Currently, I am looking for a method of attaching an sd-card to a
specific bus as opposed to defaulting to the first.
QEMU Version: 5.0.0
Specifically trying to use qemu-system-arm binary
Running an "info qtree" shows the output seen in the attached image. I have attempted multiple different combinations of arguments to attempt to get the sd-card to appear on the FOURTH sd-bus but no luck. The machine type being used is Sabrelite. It should be noted that I was able to PATCH QEMU to achieve the result I expected but I had hoped this functionality was already available and did not require modification to QEMU itself.
For reference, this is the patch that was made to source to allow the card to attach to a specific bus. After the change was made, an sd-card could be attached to a bus with the following flags:
-drive file=sdcard.img,format=raw,id=mycard -device sd-
card,drive=mycard,bus=sd-bus.0
diff qemu-5.1.0.orig/hw/sd/sdhci.c qemu-5.1.0/hw/sd/sdhci.c
1311a1312,1314
> static int index=0;
> char name[64];
> sprintf(name, "sd-bus.%d", index++);
1313c1316
< TYPE_SDHCI_BUS, DEVICE(s), "sd-bus");
---
> TYPE_SDHCI_BUS, DEVICE(s), name);
If there is a way to attach an sd-card to the specific bus that does NOT
require this change, I'd appreciate it.
** Affects: qemu
Importance: Undecided
Status: New
** Attachment added: "device_tree.png"
https://bugs.launchpad.net/bugs/1895895/+attachment/5411432/+files/device_tree.png
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https://bugs.launchpad.net/bugs/1895895
Title:
Attaching SD-Card to specific SD-Bus Sabrelite (ARM)
Status in QEMU:
New
Bug description:
Currently, I am looking for a method of attaching an sd-card to a
specific bus as opposed to defaulting to the first.
QEMU Version: 5.0.0
Specifically trying to use qemu-system-arm binary
Running an "info qtree" shows the output seen in the attached image. I have attempted multiple different combinations of arguments to attempt to get the sd-card to appear on the FOURTH sd-bus but no luck. The machine type being used is Sabrelite. It should be noted that I was able to PATCH QEMU to achieve the result I expected but I had hoped this functionality was already available and did not require modification to QEMU itself.
For reference, this is the patch that was made to source to allow the card to attach to a specific bus. After the change was made, an sd-card could be attached to a bus with the following flags:
-drive file=sdcard.img,format=raw,id=mycard -device sd-
card,drive=mycard,bus=sd-bus.0
diff qemu-5.1.0.orig/hw/sd/sdhci.c qemu-5.1.0/hw/sd/sdhci.c
1311a1312,1314
> static int index=0;
> char name[64];
> sprintf(name, "sd-bus.%d", index++);
1313c1316
< TYPE_SDHCI_BUS, DEVICE(s), "sd-bus");
---
> TYPE_SDHCI_BUS, DEVICE(s), name);
If there is a way to attach an sd-card to the specific bus that does
NOT require this change, I'd appreciate it.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1895895/+subscriptions
next reply other threads:[~2020-09-16 21:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-16 21:21 David Aghaian [this message]
2020-11-23 19:04 ` [Bug 1895895] Re: Attaching SD-Card to specific SD-Bus Sabrelite (ARM) Peter Maydell
2020-11-24 10:44 ` Philippe Mathieu-Daudé
2021-04-30 16:07 ` Thomas Huth
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