Re: My first try installing

Kia ora koutou,
I almost got my Jetson Nano to boot.

I have an early mode Jetson Nano with a revision A02 carrier board. I
may well have upgraded the onboard firmware at some distant time in the
past. I used a serial to USB cable. I am not "correctly" powering my
Jetson, others may have more luck than me.

If I boot my Jetson Nano with no SD Card in it then I eventually get a
U-Boot 2020.04 banner, a "Hit any key to stop autoboot:" prompt and
when the prompt times out it tries to boot from the ethernet. This is
good because we need U-Boot to boot NetBSD.

I then copied the Nvidia Linux image to a µSD and mounted that card on
a Linux laptop. I copied the file boot/kernel_tegra210-p3448-0000-
p3449-0000-b00.dtb onto my laptop. This is the devicetree file I talked
about earlier. There are a huge pile of .dtbo files that are devicetree
overlay files which are only needed to describe optional extra hardware
and I ignored them. I then copied kernel_tegra210-p3448-0000-p3449-
0000-b00.dtb into the dtb directory on the MS-DOS partition of a µSD
card with NetBSD on it.

When I booted the system with the modified µSD card I got a kernel
panic while attaching a PCI bus. The traceback is appended to this
email. I tried again and I halted the NetBSD boot at the NetBSD EFI
boot screen and ran the following four commands.

	userconf disable tegrapcie0
	userconf disable tegrapcie?
	userconf disable tegrapcie*
	boot

NetBSD then booted far enough to ask me

	[   1.7549993] boot device: <unknown>
	[   1.7549993] root device: ld1a
	[   3.4621742] use one of: ddb halt reboot

Neither ld0a or ld1a worked as a root device and I don't know why the
µSD card wasn't detected. I did notice that the devicetree only lists
one SDHCI device.

I also noted this in the boot log

	[   1.0000000] cpu0 at cpus0: Arm Cortex-A57 r1p1 (v8-A), id
0x0
	[   1.0000000] cpu0: package 0, core 0, smt 0
	[   1.0000000] cpu1 at cpus0: disabled (unresponsive)
	[   1.0000000] cpu2 at cpus0: disabled (unresponsive)
	[   1.0000000] cpu3 at cpus0: disabled (unresponsive)

someone smarter than me will need to look at the unresponsive CPUs.

I'll at least try and come up with a better devicetree tomorrow.

Ngā-mihi,
Lloyd

-------------->8-----------------
7582752+3367920+4178656+1742704 [595981+949152+708890]=0x13cca30
[   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
[   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 10.0 (GENERIC64) #0: Thu Mar 28 08:33:33 UTC 2024
[   1.0000000] 
[email protected]:/usr/src/sys/arch/evbarm/compile/GENERIC64
[   1.0000000] total memory = 4043 MB
[   1.0000000] avail memory = 3897 MB
[   1.0000000] armfdt0 (root)
[   1.0000000] simplebus0 at armfdt0: NVIDIA Jetson Nano Developer Kit
...
[   1.0000040] sdhc0 at simplebus0: SDMMC (81600 kHz)
[   1.0000040] sdhc0: interrupting on irq 46
[   1.0000040] sdhc0: SDHC 4.0, rev 3, 32-bit ADMA2, 81600 kHz, HS 1.8V
3.0V 3.3V, re-tuning mode 1, 512 byte blocks
[   1.0000040] sdmmc0 at sdhc0 slot 0
[   1.0000040] /regulators/regulator@9 at simplebus2 not configured
[   1.0000040] /soft_watchdog at simplebus0 not configured
[   1.0000040] tegrapcie0 at simplebus0: PCIE
[   1.0000040] tegrapcie0: interrupting on irq 130
[   1.0000040] tegrapcie0: lane config: x4 x1
[   1.0000040] panic: trap_el1h_error
[   1.0000040] cpu0: Begin traceback...
[   1.0000040] trace fp ffffc000010041d0
[   1.0000040] fp ffffc00001004200 vpanic() at ffffc000004ef228
netbsd:vpanic+0x178
[   1.0000040] fp ffffc00001004260 panic() at ffffc000004ef334
netbsd:panic+0x44
[   1.0000040] fp ffffc000010042f0 trap_el1h_error() at
ffffc000000a9260 netbsd:trap_el1h_error+0xac
[   1.0000040] tf ffffc00001004300 el1_trap() at ffffc000000aaf84
netbsd:el1_vectors+0x784
[   1.0000040] ---- SError Interrupt: trapframe 0xffffc00001004300 (304
bytes) ----
[   1.0000040]     pc=ffffc000000c75c8,   spsr=0000000080000005
[   1.0000040]    esr=00000000bf000000,    far=0000000000000000
[   1.0000040]     x0=000000000000ffff,     x1=0000000000010000
[   1.0000040]     x2=000000000000000c,     x3=ffffc00040b76038
[   1.0000040]     x4=000000000000002a,     x5=0000000000000000
[   1.0000040]     x6=0000000000000000,     x7=0000010000000000
[   1.0000040]     x8=0000000000000000,     x9=0000000000000006
[   1.0000040]    x10=0000000000000040,    x11=000000000000003f
[   1.0000040]    x12=ffffff00010000c0,    x13=ffffff0001000157
[   1.0000040]    x14=0000000000000000,    x15=ffffc000400055e8
[   1.0000040]    x16=ffffc0000009e0c8,    x17=c46cf087dc66bc65
[   1.0000040]    x18=ffffc00001004638,    x19=0000000000010000
[   1.0000040]    x20=0000000000000000,    x21=ffffc00040006000
[   1.0000040]    x22=ffffc00040004660,    x23=0000000000000000
[   1.0000040]    x24=0000000000000006,    x25=0000000000000000
[   1.0000040]    x26=ffffc00000d0b510,    x27=0000000000000008
[   1.0000040]    x28=ffffc00040003000, fp=x29=ffffc00001004630
[   1.0000040] lr=x30=ffffc000000c7598,     sp=ffffc00001004630
[   1.0000040] ------------------------------------------------
[   1.0000040] fp ffffc00001004630 probe_bus() at ffffc000000c75c8
netbsd:probe_bus+0x108
[   1.0000040] fp ffffc00001004710 probe_bus() at ffffc000000c8384
netbsd:probe_bus+0xec4
[   1.0000040] fp ffffc000010047f0 pci_configure_bus() at
ffffc000000c9a7c netbsd:pci_configure_bus+0xec
[   1.0000040] fp ffffc00001004830 tegra_pcie_attach() at
ffffc000000330f8 netbsd:tegra_pcie_attach+0x708
[   1.0000040] fp ffffc000010049c0 config_attach_internal() at
ffffc000004d4a88 netbsd:config_attach_internal+0x1f8
[   1.0000040] fp ffffc00001004a20 config_found() at ffffc000004d4c60
netbsd:config_found+0xf0
[   1.0000040] fp ffffc00001004a80 fdt_scan() at ffffc000005d2330
netbsd:fdt_scan+0x250
[   1.0000040] fp ffffc00001004c10 fdt_rescan() at ffffc000005d2760
netbsd:fdt_rescan+0x50
[   1.0000040] fp ffffc00001004c40 config_attach_internal() at
ffffc000004d4a88 netbsd:config_attach_internal+0x1f8
[   1.0000040] fp ffffc00001004ca0 config_found() at ffffc000004d4c60
netbsd:config_found+0xf0
[   1.0000040] fp ffffc00001004d00 arm_fdt_attach() at ffffc0000006b258
netbsd:arm_fdt_attach+0x94
[   1.0000040] fp ffffc00001004d60 config_attach_internal() at
ffffc000004d4a88 netbsd:config_attach_internal+0x1f8
[   1.0000040] fp ffffc00001004dc0 config_rootfound() at
ffffc000004d4d8c netbsd:config_rootfound+0x58
[   1.0000040] fp ffffc00001004e20 cpu_configure() at ffffc00000066d1c
netbsd:cpu_configure+0x4c
[   1.0000040] fp ffffc00001004e50 main() at ffffc0000073aff0
netbsd:main+0x260
[   1.0000040] fp 0000000000000000 aarch64_start() at ffffc0000000189c
netbsd:aarch64_start+0x109c
[   1.0000040] cpu0: End traceback...
Stopped in pid 0.0 (system) at  netbsd:cpu_Debugger+0xc:        ldp   
x29, x30
, [sp],#16
db{0}>