Dobrica Pavlinušić's random unstructured stuff
Chromebook: Revision 9

I have two chromebooks, one is working and one is bricked

Samsung ARM Chromebook (working)

localhost ~ # cat /proc/cpuinfo 
processor       : 0
model name      : ARMv7 Processor rev 4 (v7l)
BogoMIPS        : 48.00
Features        : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt 
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xc0f
CPU revision    : 4

processor       : 1
model name      : ARMv7 Processor rev 4 (v7l)
BogoMIPS        : 48.00
Features        : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt 
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xc0f
CPU revision    : 4

Hardware        : SAMSUNG EXYNOS5 (Flattened Device Tree)
Revision        : 0000
Serial          : 0000000000000000

bricked, recovery doesn't help

This chromebook reports that it wants to do recovery, but inserting (few different) usb sticks generated using http://www.google.com/chromeos/recovery instructions doesn't help

https://dl.google.com/dl/edgedl/chromeos/recovery/linux_recovery.sh

arch

https://wiki.archlinux.org/index.php/Samsung_Chromebook_(ARM)

setenv bootargs root=/dev/mmcblk1p2 rootfstype=jfs rootwait rw
mmc dev 1
ext2load mmc 1:1 42000000 vmlinux.uimg
bootm 42000000

custom firmware

dpavlin@nuc:/nuc/books/Chromebook$ wget http://commondatastorage.googleapis.com/chromeos-localmirror/distfiles/nv_uboot-snow.kpart.bz2
--2017-01-19 19:05:28--  http://commondatastorage.googleapis.com/chromeos-localmirror/distfiles/nv_uboot-snow.kpart.bz2
Resolving commondatastorage.googleapis.com (commondatastorage.googleapis.com)... 216.58.206.16, 2a00:1450:4001:820::2010
Connecting to commondatastorage.googleapis.com (commondatastorage.googleapis.com)|216.58.206.16|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 281844 (275K) [application/octet-stream]
Saving to: ‘nv_uboot-snow.kpart.bz2’

nv_uboot-snow.kpart.bz2       100%[================================================>] 275.24K  1.37MB/s    in 0.2s    

2017-01-19 19:05:28 (1.37 MB/s) - ‘nv_uboot-snow.kpart.bz2’ saved [281844/281844]