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Date:      Mon, 28 Feb 2022 18:48:26 +0100
From:      Milan Obuch <freebsd-riscv@dino.sk>
To:        freebsd-riscv@freebsd.org
Subject:   Re: Sipeed Lichee RV (Allwinner D1)
Message-ID:  <20220228184826.5bdfe7d9@zeta.dino.sk>
In-Reply-To: <CAMWTpVk2xpVjwGc5MEjaazXEJ5HmjrXE78UU3_7B2Z_9DA5kag@mail.gmail.com>
References:  <54a1fb0c-1128-a9fc-a96d-fe973bd2cabc@alvermark.net> <41855845-4e9f-deb9-386c-3e98b99692e9@alvermark.net> <CAMWTpVk2xpVjwGc5MEjaazXEJ5HmjrXE78UU3_7B2Z_9DA5kag@mail.gmail.com>

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On Mon, 28 Feb 2022 18:19:46 +0100
Julien Cassette <julien.cassette@gmail.com> wrote:

[ snip ]

> Now the boot is failing while mouting the rootfs:
> 
> Hit [Enter] to boot immediately, or any other key for command prompt.
> Booting [/boot/kernel/kernel]...
> Using DTB provided by EFI at 0x47ef6000.
> Kernel entry at 0x56a0002e...
> Kernel args: (null)
> ---<<BOOT>>---
> Copyright (c) 1992-2021 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993,
> 1994 The Regents of the University of California. All rights reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 13.0-RELEASE #0 releng/13.0-n244733-ea31abc261f: Fri Apr  9
> 03:30:22 UTC 2021
>     root@releng1.nyi.freebsd.org:/usr/obj/usr/src/riscv.riscv64/sys/GENERIC
> riscv
> FreeBSD clang version 11.0.1 (git@github.com:llvm/llvm-project.git
> llvmorg-11.0.1-0-g43ff75f2c3fe)
> SBI: OpenSBI v0.9
> SBI Specification Version: 0.3
> CPU(0): Unknown Implementer Unknown Processor
> real memory  = 536870912 (512 MB)
> avail memory = 507383808 (483 MB)
> arc4random: WARNING: initial seeding bypassed the cryptographic random
> device because it was not yet seeded and the knob
> 'bypass_before_seeding' was enabled.
> random: entropy device external interface
> WARNING: Device "openfirm" is Giant locked and may be deleted before
> FreeBSD 14.0.
> ofwbus0: <Open Firmware Device Tree>
> clk_fixed0: <Fixed clock> on ofwbus0
> simplebus0: <Flattened device tree simple bus> on ofwbus0
> timer0: <RISC-V Timer>
> Timecounter "RISC-V Timecounter" frequency 24000000 Hz quality 1000
> Event timer "RISC-V Eventtimer" frequency 24000000 Hz quality 1000
> rcons0: <RISC-V console>
> cpulist0: <Open Firmware CPU Group> on ofwbus0
> cpu0: <Open Firmware CPU> on cpulist0
> cryptosoft0: <software crypto>
> Timecounters tick every 1.000 msec
> Trying to mount root from ufs:/dev/ufs/rootfs [rw]...
> mountroot: waiting for device /dev/ufs/rootfs...
> Mounting from ufs:/dev/ufs/rootfs failed with error 19.
> 
> The full boot log is here: https://pastebin.com/BVaqnRh9
>

Hi,

I have zero knowledge about Allwinner D1, however your console log is
really short, almost no devices here. As it is not possible to mount
root this way (no device where any file system could reside on), it
is possible to use memory filesystem (mfs) embedded in kernel for small
root.

Also, at 'mountroot>' prompt, try pressing '?' to get valid disk boot
devices list, probably it is empty because lack of devices. Using mfs
allows boot to multiuser with some minimal filesystem, which is
important milestone when working on support for new system, in my eyes.

Regards,
Milan



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