How To Emulate An eMMC And SD Host Controller
Hello, I'm developing a kernel for Arm64 and emulating it on QEMU. I'm using this version of QEMU: QEMU emulator version 8.2.2 (Debian 1:8.2.2+ds-0ubuntu1.2) Copyright (c) 2003-2023 Fabrice Bellard and the QEMU Project developers I'm trying to emulate a SD host controller and an eMMC so I can test a SD host controller driver and an eMMC driver. Here's my emulation attempt: qemu-system-aarch64 \ -machine virt,mte=off,virtualization=off,gic-version=3 \ -cpu cortex-a76 -smp 8,sockets=2 \ -m 4G \ -device sdhci-pci,sd-spec-version=3 -device sd-card,spec_version=3 For the virt board, the sdhci-pci host controller is the only one I saw supported, so I decided to use that. I didn't see an eMMC device, so I chose sd-card. I'm hoping that I can create a drive that provides an eMMC image to the sd-card that will allow me to test my SD host and eMMC drivers. But I don't know how to create the eMMC image. I read the qemu-img documentation but I'm still unsure how to do this. So, my question is, how do I correctly emulate an eMMC on the virt board? Thank you, Darius
Re: How To Emulate An eMMC And SD Host Controller
* On 9/19/24 23:59, darius.mca...@goldkey.com wrote: > [...] QEMU emulator version 8.2.2 (Debian 1:8.2.2+ds-0ubuntu1.2) Copyright (c) 2003-2023 Fabrice Bellard and the QEMU Project developers > [...] > For the virt board, thesdhci-pci host controller is the only one I saw supported, so I decided to use that. I didn't see an eMMC device, so I chose sd-card. I'm hoping that I can create a drive that provides an eMMC image to the sd-card that will allow me to test my SD host and eMMC drivers. But I don't know how to create the eMMC image. I read the qemu-img documentation but I'm still unsure how to do this. So, my question is, how do I correctly emulate an eMMC on the virt board? I can't directly help with that question, but your Qemu version is too old to support eMMC anyway. According to https://gitlab.com/qemu-project/qemu/-/commit/e2f346aa98646e84eabe0256f89d08e89b1837cf you'll have to upgrade to 9.1.0. Since you seem to be using Debian: unfortunately, bookworm-backports only contains 9.0.2, just like trixie. Sid, however, does contain 9.1.0, which is your target version. Another viable option might be to backport the version from sid to bookworm yourself, but I haven't checked the dependencies to figure out whether that's easily possible. Mihai OpenPGP_signature.asc Description: OpenPGP digital signature
