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cwalls · 01-23-2022, 07:36 PM

Is it possbile to use https://github.com/yifanlu/Fastboot-Kindle in order to boot a custom kernel from USB (aka without flashing it?) I tried './fastboot boot uBoot' and './fastboot boot vmlinux', but I think it just booted (after downloading) the normal kernel:

Code:

downloading
done
## Booting kernel from Legacy Image at 80800000 ...
   Image Name:   Linux-3.0.35-lab126
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    3143456 Bytes =  3 MB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Btw './fastboot flash kernel' worked fine.

I saw the thread "How-to: Booting U-Boot and Linux over USB", but I think activating the "Serial Download Protocol" (SDP) would require me to unscrew the board again, which I would like to avoid if possible. (Also I wasn't able to find TM401, only "TM501 BOOT_0", see here, nor CR501 here).
I feel like erasing the first 128kB of mmcblk0boot0 is not the safest method/idea, even though it might would work out all just fine!

Thanks!

01-23-2022, 07:36 PM	#1
cwalls Member Posts: 10 Karma: 1010 Join Date: Jan 2022 Device: Kindle Voyage 3G + WiFi (Europe)	Use fastboot to boot from USB? Is it possbile to use https://github.com/yifanlu/Fastboot-Kindle in order to boot a custom kernel from USB (aka without flashing it?) I tried './fastboot boot uBoot' and './fastboot boot vmlinux', but I think it just booted (after downloading) the normal kernel: Code: downloading done ## Booting kernel from Legacy Image at 80800000 ... Image Name: Linux-3.0.35-lab126 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 3143456 Bytes = 3 MB Load Address: 80008000 Entry Point: 80008000 Verifying Checksum ... OK Loading Kernel Image ... OK OK Btw './fastboot flash kernel' worked fine. I saw the thread "How-to: Booting U-Boot and Linux over USB", but I think activating the "Serial Download Protocol" (SDP) would require me to unscrew the board again, which I would like to avoid if possible. (Also I wasn't able to find TM401, only "TM501 BOOT_0", see here, nor CR501 here). I feel like erasing the first 128kB of mmcblk0boot0 is not the safest method/idea, even though it might would work out all just fine! Thanks!