Differences

This shows you the differences between two versions of the page.

--- debug_port [2025/05/04 18:41] – ounsatn
+++ debug_port [2025/05/04 18:54] (current) – ounsatn
@@ Line 42: / Line 42: @@
-{{http://dnttalo.cluster029.hosting.ovh.net/Pictures/Uart/AKF_Uboot.png}}
+{{http://dnttalo.cluster029.hosting.ovh.net/Pictures/Uart/AKF_Uboot.jpg}}
+So to interrupt, press space or another key few times in your putty ( console apps )
+Then you'll be on uboot prompt ( => ) .
+There you can type help to get list of all commands but be careful of what you do.
+To log into linux, as we don't have password, we are going to change it by mounting the rootfs partition and then we run passwd to change password.
+<code>
+# Under uboot, print current bootargs , UUID will be different so use the one you have.
+$>printenv bootargs
+$>bootargs=root=PARTUUID=1c5755ae-899e-475b-821b-636c4825550c rootwait ro console=ttyS2,115200 rfkill.default_state=0
+# We add "single init=/bin/sh'" to the end of the booting args with command below :
+$>setenv bootargs 'root=PARTUUID=1c5755ae-899e-475b-821b-636c4825550c rootwait ro console=ttyS2,115200 rfkill.default_state=0 single init=/bin/sh'
+# Print again to check everything is fine :
+$>printenv bootargs
+# Then boot
+$>boot
+#Remount rootfs / with read write rights :
+$>mount -rw -o remount /
+#Change password, type what you want
+$>passwd root
+#Reboot
+$>reboot -f
+</code>
+and Voila, you have a console access to your device.