Original bootloader hibernates with battery too low

Custom Firmware / Bootloader HackieboxNG - Bootloader for CC3200 (V1, V2)
1

Hello,

after flashing HackieboxNG 0.9.3c (debug) I get the following boot log:

INFO  main.c:777:main: HackieboxNG preloader debug 0.9.3 b14eb68
INFO  main.c:789:main: Wakeup by cause 7
DEBUG main.c:797:main: Mounting sd card...
TRACE helper.c:49:SdFileExists: sd:/revvox/boot/ngbootloader.bin exists.
DEBUG main.c:850:main: Open sd:/revvox/boot/ngbootloader.bin ...
DEBUG main.c:854:main: Read sd:/revvox/boot/ngbootloader.bin ...
DEBUG main.c:858:main: Read 36095 bytes
INFO  main.c:629:prepareRun: SHA256 hash=06c54cac0c61cd6fba21ab94c76969198ce41c25b10f105edc7ce60e537cd6b6 
DEBUG main.c:342:BoardDeinitCustom: Prepare board deinitialization...
INFO  main.c:758:prepareRun: Start firmware sd:/revvox/boot/ngbootloader.bin ...
INFO  main.c:777:main: HackieboxNG bootloader debug 0.9.3 b14eb68
INFO  main.c:789:main: Wakeup by cause 7
TRACE config.c:193:Config_InitImageInfos: Initialize ImageInfos
DEBUG main.c:797:main: Mounting sd card...
TRACE config.c:222:Config_ReadJsonCfg: Reading config with 2198b in size.
TRACE helper.c:60:FlashFileExists: flash:/sys/pre-img.bin exists.
INFO  main.c:406:ReadBootInfo: Read bootinfo firmware=1, state=0xabcddcba
WARN  helper.c:52:SdFileExists: sd:/revvox/boot/ng-ofw3.bin doesn't exist.
WARN  helper.c:52:SdFileExists: sd:/revvox/boot/ng-cfw1.bin doesn't exist.
WARN  helper.c:52:SdFileExists: sd:/revvox/boot/ng-cfw2.bin doesn't exist.
WARN  helper.c:52:SdFileExists: sd:/revvox/boot/ng-cfw3.bin doesn't exist.
WARN  helper.c:52:SdFileExists: sd:/revvox/boot/ng-add1.bin doesn't exist.
WARN  helper.c:52:SdFileExists: sd:/revvox/boot/ng-add2.bin doesn't exist.
WARN  helper.c:52:SdFileExists: sd:/revvox/boot/ng-add3.bin doesn't exist.
DEBUG main.c:807:main: Battery level is 11998, poweroff at 8869
DEBUG main.c:825:main: Open flash:/sys/pre-img.bin ...
DEBUG main.c:832:main: Read 20480 bytes
DEBUG main.c:342:BoardDeinitCustom: Prepare board deinitialization...
INFO  main.c:755:prepareRun: Start firmware flash:/sys/pre-img.bin ...
---:--:--.---	BSP	Unknown newer hw platform (57592), last known is (16)

CC3200 bootloader v4287950848-DEBUG (M���
0uild:  dl:243.90.129 sl:32.104.144.248 hw:tb-smt-57592:253:141 sw:UNKNOWN img_ix:4
loaded battery critical level = 260866
battery_level = 4411
battery too low
---:--:--.---	BSP	Entered hibernate

The battery was charging for more than 5 hours. HackieboxNG reports a different battery level than the original bootloader, and the battery critical level seems to be way off. Do you have any idea what went wrong here?

2

Check the battery voltage. Maybe it is defective. If not, there may be another problem with your box.

The battery-level within HackieboxNG is just sampled once. This could be very inaccurate.
Also, the value is the raw value of the pin. I don’t know if the ofw bootloader does any calculations on it.

https://github.com/toniebox-reverse-engineering/hackiebox_cfw_ng/blob/2b00ddb8b4d672fe4ae091d5c0b53f23c6bdd865/sd-bootloader-ng/bootmanager/config.c#L10

3

After writing /sys/pre-img.bin again, the box booted the ofw. I don´t understand why, but am happy anyway. Thanks for your suggestions!

4

Great, that looks like the bootloader was defective.