I don't want this to run via separate root / boot partitions as it did way
back. There should be no reason (anything hardware) that it shouldn't run with
the newest Debian with am335x-evmsk.dts.
I ran debug in the command line options of uEnv.txt and got the following. This
was right before it defaulting to shell:.......
+ mkdir -m 0755 /run/initramfs
+ [ -n /run/initramfs/initramfs.debug ]
+ exec
[ 3.070539] systemd-udevd[123]: Starting version 241
[ 3.085221] systemd-udevd[124]: Network interface NamePolicy= disabled on
kernel command line, ignoring.
[ 3.108769] systemd-udevd[124]:
/usr/lib/udev/rules.d/50-udev-default.rules:18: Invalid GROUP operation
[ 3.133753] systemd-udevd[124]:
/usr/lib/udev/rules.d/50-udev-default.rules:19: Invalid GROUP operation
[ 3.153806] systemd-udevd[124]:
/usr/lib/udev/rules.d/50-udev-default.rules:20: Invalid GROUP operation
[ 3.173970] systemd-udevd[124]:
/usr/lib/udev/rules.d/50-udev-default.rules:21: Invalid GROUP operation
[ 3.193984] systemd-udevd[124]:
/usr/lib/udev/rules.d/50-udev-default.rules:22: Invalid GROUP operation
[ 3.213997] systemd-udevd[124]:
/usr/lib/udev/rules.d/50-udev-default.rules:23: Invalid GROUP operation
[ 3.234000] systemd-udevd[124]:
/usr/lib/udev/rules.d/50-udev-default.rules:24: Invalid GROUP operation
[ 3.253952] systemd-udevd[124]:
/usr/lib/udev/rules.d/50-udev-default.rules:25: Invalid GROUP operation
This is 50-udev-defualt.rules file:
# do not edit this file, it will be overwritten on update
# run a command on remove events
ACTION=="remove", ENV{REMOVE_CMD}!="", RUN+="$env{REMOVE_CMD}"
ACTION=="remove", GOTO="default_end"
SUBSYSTEM=="virtio-ports", KERNEL=="vport*", ATTR{name}=="?*",
SYMLINK+="virtio-ports/$attr{name}"
# select "system RTC" or just use the first one
SUBSYSTEM=="rtc", ATTR{hctosys}=="1", SYMLINK+="rtc"
SUBSYSTEM=="rtc", KERNEL=="rtc0", SYMLINK+="rtc", OPTIONS+="link_priority=-100"
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", IMPORT{builtin}="usb_id",
IMPORT{builtin}="hwdb --subsystem=usb"
ENV{MODALIAS}!="", IMPORT{builtin}="hwdb --subsystem=$env{SUBSYSTEM}"
ACTION!="add", GOTO="default_end"
SUBSYSTEM=="tty", KERNEL=="ptmx", GROUP="tty", MODE="0666"
SUBSYSTEM=="tty", KERNEL=="tty", GROUP="tty", MODE="0666"
SUBSYSTEM=="tty", KERNEL=="tty[0-9]*", GROUP="tty", MODE="0620"
SUBSYSTEM=="tty", KERNEL=="sclp_line[0-9]*", GROUP="tty", MODE="0620"
SUBSYSTEM=="tty", KERNEL=="ttysclp[0-9]*", GROUP="tty", MODE="0620"
SUBSYSTEM=="tty", KERNEL=="3270/tty[0-9]*", GROUP="tty", MODE="0620"
SUBSYSTEM=="vc", KERNEL=="vcs*|vcsa*", GROUP="tty"
KERNEL=="tty[A-Z]*[0-9]|ttymxc[0-9]*|pppox[0-9]*|ircomm[0-9]*|noz[0-9]*|rfcomm[0-9]*",
GROUP="dialout"
SUBSYSTEM=="mem", KERNEL=="mem|kmem|port", GROUP="kmem", MODE="0640"
SUBSYSTEM=="input", GROUP="input"
SUBSYSTEM=="input", KERNEL=="js[0-9]*", MODE="0664"
SUBSYSTEM=="video4linux", GROUP="video"
SUBSYSTEM=="graphics", GROUP="video"
SUBSYSTEM=="drm", KERNEL!="renderD*", GROUP="video"
SUBSYSTEM=="dvb", GROUP="video"
SUBSYSTEM=="media", GROUP="video"
SUBSYSTEM=="cec", GROUP="video"
SUBSYSTEM=="drm", KERNEL=="renderD*", GROUP="render", MODE="0660"
SUBSYSTEM=="kfd", GROUP="render", MODE="0660"
SUBSYSTEM=="sound", GROUP="audio", \
OPTIONS+="static_node=snd/seq", OPTIONS+="static_node=snd/timer"
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", MODE="0664"
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x00010*", GROUP="video"
SUBSYSTEM=="firewire", ATTR{units}=="*0x00b09d:0x00010*", GROUP="video"
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x010001*", GROUP="video"
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x014001*", GROUP="video"
KERNEL=="parport[0-9]*", GROUP="lp"
SUBSYSTEM=="printer", KERNEL=="lp*", GROUP="lp"
SUBSYSTEM=="ppdev", GROUP="lp"
KERNEL=="lp[0-9]*", GROUP="lp"
KERNEL=="irlpt[0-9]*", GROUP="lp"
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device",
ENV{ID_USB_INTERFACES}=="*:0701??:*", GROUP="lp"
SUBSYSTEM=="block", GROUP="disk"
SUBSYSTEM=="block", KERNEL=="sr[0-9]*", GROUP="cdrom"
SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="4|5", GROUP="cdrom"
KERNEL=="sch[0-9]*", GROUP="cdrom"
KERNEL=="pktcdvd[0-9]*", GROUP="cdrom"
KERNEL=="pktcdvd", GROUP="cdrom"
SUBSYSTEM=="scsi_generic|scsi_tape", SUBSYSTEMS=="scsi", ATTRS{type}=="1|8",
GROUP="tape"
SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="0", GROUP="disk"
KERNEL=="qft[0-9]*|nqft[0-9]*|zqft[0-9]*|nzqft[0-9]*|rawqft[0-9]*|nrawqft[0-9]*",
GROUP="disk"
KERNEL=="loop-control", GROUP="disk", OPTIONS+="static_node=loop-control"
KERNEL=="btrfs-control", GROUP="disk"
KERNEL=="rawctl", GROUP="disk"
SUBSYSTEM=="raw", KERNEL=="raw[0-9]*", GROUP="disk"
SUBSYSTEM=="aoe", GROUP="disk", MODE="0220"
SUBSYSTEM=="aoe", KERNEL=="err", MODE="0440"
KERNEL=="rfkill", MODE="0664"
KERNEL=="tun", MODE="0666", OPTIONS+="static_node=net/tun"
KERNEL=="fuse", MODE="0666", OPTIONS+="static_node=fuse"
# The static_node is required on s390x and ppc (they are using MODULE_ALIAS)
KERNEL=="kvm", GROUP="kvm", MODE="0660", OPTIONS+="static_node=kvm"
SUBSYSTEM=="ptp", ATTR{clock_name}=="KVM virtual PTP", SYMLINK += "ptp_kvm"
LABEL="default_end"
If I go off of those line numbers and GROUP failure.... it doesn't like
GROUP="video" for some reason. I'll disable video in uEnv.txt and see if that
makes a difference. But I doubt that's it. I'm also trying a different uSD Card
(manufacturer) just in case.
Regards,Ray
On Friday, January 15, 2021, 10:11:33 AM CST, Robert Nelson
<robertcnel...@gmail.com> wrote:
On Thu, Jan 14, 2021 at 6:02 PM 'Ray Willis' via BeagleBoard
<beagleboard@googlegroups.com> wrote:
>
>
> All,
> I'm trying to figure out how to get the TDMSSK3358 (or AM335x Starter Kit)
> working with Bone Debian. There is a devicetree overlay that is set up to
> supposedly use it, am335x-evmsk.dts, but I have not been able to get it to
> work even with the latest build.
>
> When it runs, it loads u-boot just fine, but dumps to Linux shell after
> attempting to load the Kernel. I've attached my putty log. I've found
> similar issues in forum posts that were supposedly a faulty voltage supply or
> bent pin for the uSD Card. I do not think this is the case as the Linux Arago
> (built via Yocto) still runs fine... that it comes with.
>
> A little more info for context:
> This Dev System runs only from uSD Card, it does not utilize the emmc. When
> it fails, the linux shell stays shown on the display (Linux Icon with
> blinking cursor). I do have basic shell commands.
>
> I think the fault lies in that the devicetree is still not correct. It is
> somewhat set up as a traditional device for using emmc first and if the uSD
> Card Detect (CD) goes low it will switch the boot up order. Typical
> Beaglebone Black requires a SW be pressed also to switch the boot up order
> upon boot up.
>
> The failure is basically the Kernel doesn't see /dev/mmcblk0p1 for rootfs. I
> can check /dev in shell but no memory location is there.... not mmcblk, sda,
> sdb, or other. The original Arago OS uses a separate Boot/Root partition
> (unlike Bone Debian) but that shouldn't matter as boot is actually running.
> It's almost as if it tries to access the SD Card pins for what's designated
> for mmc2 in the pinmux but can't read the data.
>
> Has anyone else tackled this and had it work, or can someone provide more
> insight?
>
> from my log attached:
> .....
> [ 2.899401] omap_hsmmc 48060000.mmc: Got CD GPIO
> ......
> Gave up waiting for root file system device. Common problems:
> - Boot args (cat /proc/cmdline)
> - Check rootdelay= (did the system wait long enough?)
> - Missing modules (cat /proc/modules; ls /dev)
> ALERT! /dev/mmcblk0p1 does not exist. Dropping to a shell!
> (initramfs)
>
> Any help is appreciated on this.
There's an override for a 2 partition setup: in /boot/uEnv.txt
uenv_root=/dev/mmcblk0p2
Regards,
--
Robert Nelson
https://rcn-ee.com/
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