ODROID U3 - system encryption / initrd

[arxx]

hej,

so i'm trying to have a fully encrypted archlinux on an emmc in my odroid u3. i'm stuck right now: during the boot process the cryptdevice is not getting mounted and the process stops "waiting for /dev/mapper/root". to me it seems as if the initrd i specified is not getting loaded.

my boot file:
$this->bbcode_second_pass_code('', 'setenv initrd_high "0xffffffff"
setenv fdt_high "0xffffffff"
setenv fb_x_res "1920"
setenv fb_y_res "1080"
setenv hdmi_phy_res "1080"
setenv bootcmd "fatload mmc 0:1 0x40008000 zImage; fatload mmc 0:1 0x42000000 uInitrd; bootm 0x40008000 0x42000000"
setenv bootargs "fb_x_res=${fb_x_res} fb_y_res=${fb_y_res} hdmi_phy_res=${hdmi_phy_res} cryptdevice=/dev/mmcblk0p2:root root=/dev/mapper/root rootwait ro mem=2047M"
boot
')

do you have any ideas on this?

[Geoff]

Some kernels don't have device-mapper or LVM built in. Try loading dm_mod and lvm2 in your uInitrd, along with crypto modules.

[arxx]

Thanks for your advice. I put dm_mod and dm_crypt into the modules-array of the mkinitcpio.conf. imho lvm2 is not needed as i didn't setup a lvm.

Nevertheless, the boot process still stops with "waiting for /dev/mapper/root".

[WarheadsSE]

Did you confirm that it is loading the module @ boot?

[Geoff]

Did you insert "encrypt" in between "block" and "filesystems" in the definition of HOOKS in /etc/mkinitcpio.conf? I imagine you won't get a prompt for the crypto password without that.

$this->bbcode_second_pass_quote('Geoff', 'D')id you insert "encrypt" in between "block" and "filesystems" in the definition of HOOKS in /etc/mkinitcpio.conf? I imagine you won't get a prompt for the crypto password without that.

[WarheadsSE]

Might want to add it to a modules-load.d/ entry

This is a sample on my desktop:
$this->bbcode_second_pass_code('', '
$ cat /etc/modules-load.d/docker.conf
# loop needs to be prior to aufs for docker.
loop
aufs
')

[Geoff]

$this->bbcode_second_pass_quote('arxx', 'I') doubt that it loads the initrd at all. Is there a way to confirm this?