FYI: head -r358966 -> -r359736 and RPi4: -r359736 fails to boot (unless I use boot -v) where -r358966 booted fine before update

[Mark Millard]

I use a microsd card that is set up for booting both
a Rock64 and a RPi4: the dd'd u-boot vs. the RPi4
specific materials are in independent places and
the rest is shared and rather generic.

So at head -r358966 I'd been able to both the
Rock64 and the RPi4 from the same media.

Now with head -r359736 in place instead:

A) The Rock64 boots via that media just fine.

B) The RPi4 fails to boot (nothing special
   like "boot -v").

C) The RPi4 with "boot -v" boots just fine.
   (This makes identifying the issue non-obvious.)



For (B, i.e., no boot -v):

. . .
Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...    
. . .
Release APs...done
CPU  0: ARM Cortex-A72 r0p3 affinity:  0
Trying to mount root from ufs:/dev/label/RPi4root [rw,noatime]...
           
. . . (looks normal until after the CPU 3 line) . . .

CPU  1: ARM Cortex-A72 r0p3 affinity:  1
CPU  2: ARM Cortex-A72 r0p3 affinity:  2
CPU  3: ARM Cortex-A72 r0p3 affinity:  3
sdhci_bcm0-slot0: Controller timeout
sdhci_bcm0-slot0: ============== REGISTER DUMP ==============
sdhci_bcm0-slot0: Sys addr: 0x000006c8 | Version:  0x00001002
sdhci_bcm0-slot0: Blk size: 0x00000200 | Blk cnt:  0x00000001
sdhci_bcm0-slot0: Argument: 0x0ee2afc1 | Trn mode: 0x00000036
sdhci_bcm0-slot0: Present:  0x1fff0a06 | Host ctl: 0x00000007
sdhci_bcm0-slot0: Power:    0x0000000f | Blk gap:  0x00000080
sdhci_bcm0-slot0: Wake-up:  0x00000000 | Clock:    0x00000107
sdhci_bcm0-slot0: Timeout:  0x00000003 | Int stat: 0x00000000
sdhci_bcm0-slot0: Int enab: 0x01ff003b | Sig enab: 0x01ff003b
sdhci_bcm0-slot0: AC12 err: 0x00000000 | Host ctl2:0x00000000
sdhci_bcm0-slot0: Caps:     0x45ee6432 | Caps2:    0x0000a525
sdhci_bcm0-slot0: Max curr: 0x00080008 | ADMA err: 0x00000000
sdhci_bcm0-slot0: ADMA addr:0x00000000 | Slot int: 0x00000000
sdhci_bcm0-slot0: ===========================================
mmcsd0: Error indicated: 1 Timeout
mmcsd0: Error indicated: 1 Timeout
mmcsd0: Error indicated: 1 Timeout
mmcsd0: Error indicated: 1 Timeout
mmcsd0: Error indicated: 1 Timeout
Root mount waiting for: CAM
Mounting from ufs:/dev/label/RPi4root failed with error 2; retrying for 10 more seconds
Mounting from ufs:/dev/label/RPi4root failed with error 2.

Loader variables:
  vfs.root.mountfrom=ufs:/dev/label/RPi4root
  vfs.root.mountfrom.options=rw,noatime

Manual root filesystem specification:
  <fstype>:<device> [options]
      Mount <device> using filesystem <fstype>
      and with the specified (optional) option list.

    eg. ufs:/dev/da0s1a
        zfs:zroot/ROOT/default
        cd9660:/dev/cd0 ro
          (which is equivalent to: mount -t cd9660 -o ro /dev/cd0 /)

  ?               List valid disk boot devices
  .               Yield 1 second (for background tasks)
  <empty line>    Abort manual input

mountroot> ?

List of GEOM managed disk devices:
  mmcsd0

mountroot> 

So far the above has been 100% repeating.


For (C, i.e., boot -v in use):

. . .
Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel] in 9 seconds... 

Type '?' for a list of commands, 'help' for more detailed help.
OK boot -v
. . .
. . .
Release APs...done
CPU  0: ARM Cortex-A72 r0p3 affinity:  0
Trying to mount root from ufs:/dev/label/RPi4root [rw,noatime]...
. . .
CPU  1: ARM Cortex-A72 r0p3 affinity:  1
CPU  2: ARM Cortex-A72 r0p3 affinity:  2
CPU  3: ARM Cortex-A72 r0p3 affinity:  3
Root mount waiting for:regulator: shutting down unused regulators
 CAM
Root mount waiting for: CAM
Root mount waiting for: CAM
Root mount waiting for: CAM
Root mount waiting for: CAM
Root mount waiting for: CAM
Root mount waiting for: CAM
Root mount waiting for: CAM
Root mount waiting for: CAM
Root mount waiting for: CAM
Warning: no time-of-day clock registered, system time will not be set accurately
start_init: trying /sbin/init
Setting hostuuid: REPLACED.
Setting hostid: REPLACED.
Starting file system checks:
/dev/label/RPi4root: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/label/RPi4root: clean, 19057570 free (498234 frags, 2319917 blocks, 1.8% fragmentation)
. . .


===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)