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raspberrypi0.conf: add QB_ variables for runqemu

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Add the relevant QB_ variables sufficient to get the QEMU raspi0 model
running with runqemu.  The dwc_otg.fiq_fsm_enable setting is necessary
to get USB devices (both disk and net) working.  Without this, boot
hangs.  The initcall_blacklist=bcm2835_pm_driver_init is needed to
workaround other boot issues.  Seems like the PM HW emulation isn't
present in the QEMU model.

Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Jon Mason authored and Khem Raj committed 2026-10-13 19:30:08 -07:00
1 parent 25a847b50f
commit c3539e8040
1 file changed
+17
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conf/machine/raspberrypi0.conf
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@@ -13,3 +13,20 @@ UBOOT_MACHINE = "rpi_config"
SERIAL_CONSOLES ?= "115200;ttyAMA0"
ARMSTUB ?= "armstub.bin"
#
# Below are variables ONLY needed for running with Yocto/OE's runqemu script
#
IMAGE_CLASSES += "qemuboot"
QB_SYSTEM_NAME = "qemu-system-arm"
QB_MACHINE = "-machine raspi0"
QB_MEM = "-m 512"
QB_DTB = "bcm2708-rpi-zero.dtb"
QB_NETWORK_DEVICE = "-device usb-net,netdev=net0,mac=@MAC@"
QB_KERNEL_ROOT = "/dev/sda"
# The dwc_otg.fiq_fsm_enable setting is necessary to get USB devices (both disk and net) working. Without this, boot hangs
# The initcall_blacklist=bcm2835_pm_driver_init is needed to workaround boot issues. Seems like the PM HW emulation isn't present
QB_KERNEL_CMDLINE_APPEND = "rootwait initcall_blacklist=bcm2835_pm_driver_init earlycon=pl011,0x20201000 dwc_otg.fiq_fsm_enable=0"
QB_RNG = ""
QB_ROOTFS_OPT = "-drive id=disk0,file=@ROOTFS@,if=none,format=raw -device usb-storage,drive=disk0"
QB_DEFAULT_FSTYPE = "ext3"