Date: Fri, 15 Dec 2017 01:21:07 -0800 From: Mark Millard <markmi@dsl-only.net> To: Freebsd-arm <freebsd-arm@freebsd.org> Subject: Fairly minimal sdcard content for booting kernel and world on an RPI2 V1.1 from a USB SSD instead of from the sdcard Message-ID: <96279C4C-C713-48E1-AD5F-178852C04B45@dsl-only.net>
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For the following the sdcard can be removed
after the kernel starts to load from the
USB drive (in my context a USB SSD stick).
=46rom gpart show (sdcard plugged in someplace
else via USB):
=3D> 63 62521281 da4 MBR (30G)
63 102375 da4s1 !12 [active] (50M)
102438 56623098 da4s2 freebsd (27G)
56725536 5795808 - free - (2.8G)
=3D> 0 56623098 da4s2 BSD (27G)
0 90 - free - (45K)
90 56623008 da4s2a freebsd-ufs (27G)
(I did not bother to shrink the ufs partition on s2a
or s2 itself. But little space is needed.)
For /media being where I mounted s1
in order to show it:
# du -Asm /media/*
1 /media/BOOTCODE.BIN
1 /media/CONFIG.TXT
1 /media/FIXUP.DAT
1 /media/FIXUP_CD.DAT
1 /media/FIXUP_X.DAT
1 /media/LICENCE.broadcom
1 /media/README
3 /media/START.ELF
1 /media/START_CD.ELF
4 /media/START_X.ELF
1 /media/U-BOOT.BIN
1 /media/fixup_db.dat
5 /media/start_db.elf
1 /media/ubldr.bin
So. . .
Ports based:
sysutils/rpi-firmware content
sysutils/u-boot-rpi2 content
installworld copy based:
boot/ubldr.bin copy
# du -Asm /usr/local/share/rpi-firmware =
/usr/local/share/u-boot/u-boot-rpi2
12 /usr/local/share/rpi-firmware
1 /usr/local/share/u-boot/u-boot-rpi2
(I do not repeat the port instructions here.)
For /mnt being where I mounted s2a
in order to show it:
# du -Asm /mnt/*/*
1 /mnt/boot/beastie.4th
1 /mnt/boot/boot1.efi
1 /mnt/boot/boot1.efifat
1 /mnt/boot/brand-fbsd.4th
1 /mnt/boot/brand.4th
1 /mnt/boot/check-password.4th
1 /mnt/boot/color.4th
1 /mnt/boot/defaults
1 /mnt/boot/delay.4th
3 /mnt/boot/dtb
1 /mnt/boot/efi.4th
1 /mnt/boot/entropy
1 /mnt/boot/firmware
1 /mnt/boot/frames.4th
1 /mnt/boot/loader.4th
1 /mnt/boot/loader.conf
1 /mnt/boot/loader.efi
1 /mnt/boot/loader.help
1 /mnt/boot/loader.rc
1 /mnt/boot/logo-beastie.4th
1 /mnt/boot/logo-beastiebw.4th
1 /mnt/boot/logo-fbsdbw.4th
1 /mnt/boot/logo-orb.4th
1 /mnt/boot/logo-orbbw.4th
1 /mnt/boot/menu-commands.4th
1 /mnt/boot/menu.4th
1 /mnt/boot/menu.rc
1 /mnt/boot/menu.rc.sample
1 /mnt/boot/menusets.4th
1 /mnt/boot/modules
1 /mnt/boot/msdos
1 /mnt/boot/pcibios.4th
1 /mnt/boot/screen.4th
1 /mnt/boot/shortcuts.4th
1 /mnt/boot/support.4th
1 /mnt/boot/ubldr
1 /mnt/boot/ubldr.bin
1 /mnt/boot/version.4th
1 /mnt/boot/zfs
1 /mnt/etc/fstab
(I'll not list all the dtb files in the
dtb directory.)
# df -m /mnt
Filesystem 1M-blocks Used Avail Capacity Mounted on
/dev/da4s2a 26763 5 24617 0% /mnt
(So not much space needed.)
# more /mnt/etc/fstab
/dev/da0p1 / ufs rw,noatime 1 1
/dev/da0p2 none swap sw 0 0
fstab used notation for the root file system
that ubldr.bin could interpret on its own.
Of course, for the /dev/da0p1 and /dev/da0p2
notation for the USB SSD, it can be important
that other USB drives not be plugged in yet
or the paths needed might be different.
As for populating boot/ above:
Having done an installkernel and installworld locally
in order to copy selectively to the sdcard's s2a UFS
partition:
# du -Asm /usr/obj/DESTDIRs/clang-armv7-installworld/boot/* =
/usr/obj/DESTDIRs/clang-armv7-installkernel/boot/dtb | more
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/beastie.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/boot1.efi
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/boot1.efifat
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/brand-fbsd.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/brand.4th
1 =
/usr/obj/DESTDIRs/clang-armv7-installworld/boot/check-password.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/color.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/defaults
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/delay.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/dtb
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/efi.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/firmware
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/frames.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/kernel
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/loader.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/loader.efi
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/loader.help
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/loader.rc
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/logo-beastie.4th
1 =
/usr/obj/DESTDIRs/clang-armv7-installworld/boot/logo-beastiebw.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/logo-fbsdbw.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/logo-orb.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/logo-orbbw.4th
1 =
/usr/obj/DESTDIRs/clang-armv7-installworld/boot/menu-commands.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/menu.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/menu.rc
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/menusets.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/modules
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/pcibios.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/screen.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/shortcuts.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/support.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/ubldr
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/ubldr.bin
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/version.4th
1 /usr/obj/DESTDIRs/clang-armv7-installworld/boot/zfs
3 /usr/obj/DESTDIRs/clang-armv7-installkernel/boot/dtb
Copy (my paths are just examples):
cp -ax /usr/obj/DESTDIRs/clang-armv7-installworld/boot /mnt/
cp -ax /usr/obj/DESTDIRs/clang-armv7-installkernel/boot/dtb /mnt/boot/
(Updates may mean cleaning out older directory/file names.)
(A more selective copy should be possible but gets into
tracking potential changes in what files are required more
carefully.)
[For UFS the mounts presume endian matching, here little endian.]
[In my context, the USB SSD stick is on a powered hub that is
plugged into the RPI2-B V1.1 .]
=3D=3D=3D
Mark Millard
markmi at dsl-only.net
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