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>Number: 60401
>Category: port-arm
>Synopsis: usb boot RPi 3B+ NetBSD 11.0_RC5 fails - cannot boot from usb stick
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: port-arm-maintainer
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sat Jul 04 03:55:00 +0000 2026
>Originator: [email protected]
>Release: NetBSD 11.0_RC5
>Organization:
>Environment:
System: NetBSD SS.Culver.Net 11.0_RC5 NetBSD 11.0_RC5 (GENERIC) #0: Tue Jun 16 15:48:07 UTC 2026 [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:
I wrote the USB stick from amd64 system; this output is from the RPi 3B+
Booting
[ 1.0000000] NetBSD/evbarm (fdt) booting ...
[ 1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
[ 1.0000000] 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,
[ 1.0000000] 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023,
[ 1.0000000] 2024, 2025, 2026
[ 1.0000000] The NetBSD Foundation, Inc. All rights reserved.
[ 1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
[ 1.0000000] The Regents of the University of California. All rights reserved.
[ 1.0000000] NetBSD 11.0_RC5 (GENERIC64) #0: Tue Jun 16 15:48:07 UTC 2026
[ 1.0000000] [email protected]:/usr/src/sys/arch/evbarm/compile/GENERIC64
[ 1.0000000] total memory = 930 MB
[ 1.0000000] avail memory = 895 MB
[ 1.0000000] armfdt0 (root)
[ 1.0000000] simplebus0 at armfdt0: Raspberry Pi 3 Model B Plus Rev 1.4
[ 1.0000000] simplebus1 at simplebus0
[ 1.0000000] simplebus2 at simplebus0
[ 1.0000000] cpus0 at simplebus0
[ 1.0000000] simplebus3 at simplebus0
[ 1.0000000] cpu0 at cpus0: Arm Cortex-A53 r0p4 (v8-A), id 0x0
[ 1.0000000] cpu0: package 0, core 0, smt 0, numa 0
[ 1.0000000] cpu1 at cpus0: Arm Cortex-A53 r0p4 (v8-A), id 0x1
[ 1.0000000] cpu1: package 0, core 1, smt 0, numa 0
[ 1.0000000] cpu2 at cpus0: Arm Cortex-A53 r0p4 (v8-A), id 0x2
[ 1.0000000] cpu2: package 0, core 2, smt 0, numa 0
[ 1.0000000] cpu3 at cpus0: Arm Cortex-A53 r0p4 (v8-A), id 0x3
[ 1.0000000] cpu3: package 0, core 3, smt 0, numa 0
[ 1.0000000] bcmicu0 at simplebus1
[ 1.0000000] fclock0 at simplebus2: 19200000 Hz fixed clock (osc)
[ 1.0000000] bcmcprman0 at simplebus1: BCM283x Clock Controller
[ 1.0000000] syscon0 at simplebus1: couldn't get registers
[ 1.0000000] bcmaux0 at simplebus1
[ 1.0000000] fclock1 at simplebus2: 480000000 Hz fixed clock (otg)
[ 1.0000000] bcmicu1 at simplebus1: Multiprocessor
[ 1.0000000] gtmr0 at simplebus0: Generic Timer
[ 1.0000000] gtmr0: interrupting on local_intc irq 3
[ 1.0000000] armgtmr0 at gtmr0: Generic Timer (19200 kHz, virtual)
[ 1.0000040] bcmgpio0 at simplebus1: GPIO controller 2835
[ 1.0000040] bcmgpio0: pins 0..31 interrupting on icu irq 49
[ 1.0000040] bcmgpio0: pins 32..54 interrupting on icu irq 50
[ 1.0000040] gpio0 at bcmgpio0: 54 pins
[ 1.0000040] plcom0 at simplebus1: ARM PL011 UART
[ 1.0000040] plcom0: txfifo 16 bytes
[ 1.0000040] plcom0: interrupting on icu irq 57
[ 1.0000040] com0 at simplebus1: BCM AUX UART, 1-byte FIFO
[ 1.0000040] com0: console
[ 1.0000040] com0: interrupting on icu irq 29, clock 800000000 Hz
[ 1.0000040] mmcpwrseq0 at simplebus0: couldn't get reset GPIOs
[ 1.0000040] /soc/thermal@7e212000 at simplebus1 not configured
[ 1.0000040] bcmdmac0 at simplebus1: DMA0 DMA2 DMA4 DMA5 DMA6 DMA7 DMA8 DMA9 DMA10 DMA11
[ 1.0000040] /soc/power at simplebus1 not configured
[ 1.0000040] /phy at simplebus0 not configured
[ 1.0000040] bsciic0 at simplebus1: Broadcom Serial Controller
[ 1.0000040] bsciic0: interrupting on icu irq 53
[ 1.0000040] iic0 at bsciic0: I2C bus
[ 1.0000040] bcmmbox0 at simplebus1: VC mailbox
[ 1.0000040] bcmmbox0: interrupting on icu irq 65
[ 1.0000040] vcmbox0 at bcmmbox0
[ 1.0000040] /soc/timer@7e003000 at simplebus1 not configured
[ 1.0000040] /soc/txp@7e004000 at simplebus1 not configured
[ 1.0000040] bcmsdhost0 at simplebus1: SD HOST controller
[ 1.0000040] bcmsdhost0: interrupting on icu irq 56
[ 1.0000040] bsciic1 at simplebus1: Broadcom Serial Controller
[ 1.0000040] bsciic1: interrupting on icu irq 53
[ 1.0000040] iic1 at bsciic1: I2C bus
[ 1.0000040] /soc/pwm@7e20c000 at simplebus1 not configured
[ 1.0000040] sdhc0 at simplebus1: SDHC controller
[ 1.0000040] sdhc0: interrupting on icu irq 62
[ 1.0000040] bsciic2 at simplebus1: Broadcom Serial Controller
[ 1.0000040] bsciic2: interrupting on icu irq 53
[ 1.0000040] iic2 at bsciic2: I2C bus
[ 1.0000040] dwctwo0 at simplebus1: USB controller
[ 1.0000040] dwctwo0: interrupting on icu irq 9
[ 1.0000040] bcmpmwdog0 at simplebus1: Power management, Reset and Watchdog controller
[ 1.0000040] /soc/vec@7e806000 at simplebus1 not configured
[ 1.0000040] /soc/hdmi@7e902000 at simplebus1 not configured
[ 1.0000040] /soc/gpu at simplebus1 not configured
[ 1.0000040] genfb0 at simplebus1
[ 1.0000040] wsdisplay0 at genfb0 kbdmux 1
[ 1.0000040] vchiq0 at simplebus1: BCM2835 VCHIQ
[ 1.0000040] armpmu0 at simplebus0: Performance Monitor Unit
[ 1.0000040] gpioleds0 at simplebus0: ACT
[ 1.0000040] bcmrng0 at simplebus1: RNG
[ 1.0000040] entropy: ready
[ 1.4453592] sdmmc0 at bcmsdhost0
[ 1.4453592] sdhc0: SDHC 3.0, rev 153, platform DMA, 200000 kHz, HS 3.3V, re-tuning mode 1, 1024 byte blocks
[ 1.4553608] sdmmc1 at sdhc0 slot 0
[ 1.4753623] usb0 at dwctwo0: USB revision 2.0
[ 1.4853639] armpmu0: interrupting on local_intc irq 9
[ 1.4953647] uhub0 at usb0: NetBSD (0x0000) DWC2 root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1
[ 1.5753697] sdmmc0: direct I/O error 5, r=6 p=0xffffc000b14fce5c write
[ 1.5853707] sdmmc0: couldn't enable c853784] (manufacturer 0x2d0, product 0xa9a6, standard function interface code 0x2) at sdmmc1 function 3 not configured
[ 1.6953788] swwdog0: software watchdog initialized
[ 1.6953788] WARNING: 3 errors while detecting hardware; check system log.
[ 1.7053798] boot device: <unknown>
[ 1.7053798] unknown device major 0xffffffffffffffff
[ 2.7054456] unknown device major 0xffffffffffffffff
[ 3.7055112] unknown device major 0xffffffffffffffff
[ 4.7055772] unknown device major 0xffffffffffffffff
[ 5.7056424] unknown device major 0xffffffffffffffff
[ 6.7057071] unknown device major 0xffffffffffffffff
[ 7.7057727] unknown device major 0xffffffffffffffff
[ 8.7058384] unknown device major 0xffffffffffffffff
[ 9.7059045] unknown device major 0xffffffffffffffff
[ 10.7059702] unknown device major 0xffffffffffffffff
[ 11.7060366] unknown device major 0xffffffffffffffff
[ 12.7061022] unknown device major 0xffffffffffffffff
[ 13.7061684] unknown device major 0xffffffffffffffff
[ 14.7062348] unknown device major 0xffffffffffffffff
[ 15.7063005] unknown device major 0xffffffffffffffff
[ 16.7063667] unknown device major 0xffffffffffffffff
[ 17.7064323] unknown device major 0xffffffffffffffff
[ 18.7064980] unknown device major 0xffffffffffffffff
[ 19.7065637] unknown device major 0xffffffffffffffff
[ 20.7066296] unknown device major 0xffffffffffffffff
[ 21.7066954] unknown device major 0xffffffffffffffff
[ 21.7166960] root device: ?
[ 34.3075282] use one of: bwfm0 ddb halt reboot
[ 34.3175289] root device:
>How-To-Repeat:
put USB stick into NetBSD computer; it shows up on my amd64 machine as sd4
# dd if=/tmp/arm64.img of=/dev/rsd4 bs=1m conv=sync progress=1
or
# dd if=/tmp/arm64mbr.img of=/dev/rsd4 bs=1m conv=sync progress=1
add "dtoverlay=disable-bt" to msdos file config.txt
change cmdline.txt to be "root=NAME=netbsd-root" -or- "root=sd0"
Boot on Raspberry Pi 3 Model B Plus Rev 1.4 with 1G memory
Console TTY output is as above.
>Fix:
>Unformatted: