FYI: head -r338341 on Pine64+ 2GB early "KLD file umodem.ko is missing dependencies" but later manual kldload works

[Mark Millard]

On 2018-Aug-31, at 10:50 AM, John-Mark Gurney <jmg at funkthat.com> wrote:

Ian Lepore wrote this message on Wed, Aug 29, 2018 at 09:30 -0600:
> On Tue, 2018-08-28 at 22:53 -0700, Mark Millard via freebsd-arm wrote:
>> Loading kernel...
>> /boot/kernel/kernel text=0x8d4607 data=0x176e78+0x79d254
>> syms=[0x8+0x11f670+0x8+0x112dd8]
>> Loading configured modules...
>> /boot/entropy size=0x1000
>> /boot/kernel/umodem.ko text=0x2168 text=0x1410 data=0x102d0+0xfd40
>> syms=[0x8+0xf30+0x8+0xb73]
>> Using DTB provided by EFI at 0x47ff9000.
>> Loading DTB overlays: 'sun50i-a64-sid,sun50i-a64-ths,sun50i-a64-
>> timer'
>> /boot/dtb/overlays/sun50i-a64-sid.dtbo size=0x1fd
>> /boot/dtb/overlays/sun50i-a64-ths.dtbo size=0x3e8
>> /boot/dtb/overlays/sun50i-a64-timer.dtbo size=0x175
>> applying DTB overlay '/boot/dtb/overlays/sun50i-a64-sid.dtbo'
>> applying DTB overlay '/boot/dtb/overlays/sun50i-a64-ths.dtbo'
>> applying DTB overlay '/boot/dtb/overlays/sun50i-a64-timer.dtbo'
>> EHCI failed to shut down host controller.
>> ---<<BOOT>>---
>> KDB: debugger backends: ddb
>> KDB: current backend: ddb
>> Copyright (c) 1992-2018 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 12.0-ALPHA3  r338341M arm64
>> FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540) (based on
>> LLVM 6.0.1)
>> VT: init without driver.
>> KLD file umodem.ko is missing dependencies
>> . . .
>> 
. . .
>> But after login:
>> 
>> # kldstat
>> Id Refs Address                Size Name
>>  1    1 0xffff000000000000  141bba8 kernel
>> # kldload umodem.ko
>> # kldstat
>> Id Refs Address                Size Name
>>  1    6 0xffff000000000000  141bba8 kernel
>>  2    1 0xffff00005d000000    41000 umodem.ko
>>  3    1 0xffff00005d041000    41000 ucom.ko

I finally have access to the BPI-M3 (armv7/cortexA7) again and
I updated it from something in the range -r333??? . The BPI-M3
did not have this problem:

QUOTE
Loading kernel...
/boot/kernel/kernel text=0x889d68 data=0xad8e0+0x1f79a0 syms=[0x4+0xa6630+0x4+0x108bbf]
Loading configured modules...
/boot/kernel/umodem.ko text=0x1550 text=0xf30 data=0x1080+0xf84 syms=[0x4+0xe90+0x4+0xa7e]
loading required module 'ucom'
/boot/kernel/ucom.ko text=0x174c text=0x2a30 data=0x1080+0x17b8 syms=[0x4+0x13e0+0x4+0xbac]
/boot/entropy size=0x1000

Hit [Enter] to boot immediately, or any other key for command prompt.
END QUOTE

The problem with loading ucom as a required module while loading
the kernel seems to be aarch64 specific in some way. The same
range of text for the Pine64+ 2GB (aarch64/cortexA53) shows no
reference to ucom.ko :

QUOTE
Loading kernel...
/boot/kernel/kernel text=0x8d5063 data=0x1770f8+0x79d454 syms=[0x8+0x11f790+0x8+0x112f2c]
Loading configured modules...
/boot/entropy size=0x1000
/boot/kernel/umodem.ko text=0x2168 text=0x1410 data=0x102d0+0xfd40 syms=[0x8+0xf30+0x8+0xb73]

Hit [Enter] to boot immediately, or any other key for command prompt.
END QUOTE

The builds for the above are both based on -r339076 (cross builds from
the same amd64 host using the same /usr/src/ tree content as the host).


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