Changes between Version 6 and Version 7 of SF_Ch_pstore

Timestamp:

09/07/18 08:48:13 (6 years ago)

Author:

admin

Comment:

--

SF_Ch_pstore

@@ -57 +57 @@
 }}}
 
+=== Kernel panic in boot image ===
+To use the kernel panic in the boot image it has to be added to the initramfs.
 
+See [https://github.com/guhl/hybris-boot_chiron/commit/3dc13787ed18abcd1a9f76c81a67d1e489603320]
 
+Changes in hybris/hybris-boot/Android.mk
+- define a variable for the panic module (next to BB_STATIC)
+{{{
+PM_STATIC := $(PRODUCT_OUT)/vendor/lib/modules/panic.ko
+}}}
+- copy the PM_STATIC to the /bin directory (next to "@cp $(BB_STATIC) $(BOOT_INTERMEDIATE)/initramfs/bin/")
+{{{
+@cp $(PM_STATIC) $(BOOT_INTERMEDIATE)/initramfs/bin/
+}}}
+
+=== Usage in init ===
+See also [https://github.com/guhl/hybris-boot_chiron/commit/3dc13787ed18abcd1a9f76c81a67d1e489603320]
+
+To write to pstore and cause a kernel panic add something like 
+{{{
+    # first test of pstore / panic
+    cat /init.log > /dev/pmsg0
+    /bin/busybox insmod /bin/panic.ko
+}}}
+to hybris/hybris-boot/init-script where ever you want to see the init.log or output additional information.
+
+Then build the boot image using make hybrs-boot in HABUILD and boot it using fastboot boot.
+After the kernel panic and the reboot boot to recovery or LOS and check the files in /sys/fs/pstore
+
+/sys/fs/pstore/console-ramoops-0 and /sys/fs/pstore/dmesg-ramoops-0 should contain
+{{{
+<0>[    3.596679] Kernel panic - not syncing: Guhl caused a kernel panic!
+}}}
+
+/sys/fs/pstore/pmsg-ramoops-0 should contain the init.log of mer and look something like 
+{{{
++ exec
++ echo Running Mer Boat Loader
+Running Mer Boat Loader
++ BOOTLOGO=
++ ALWAYSDEBUG=
++ DATA_PARTITION=/dev/sda17
++ DEFAULT_OS=sailfishos
++ export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
++ USB_FUNCTIONS=rndis
++ ANDROID_USB=/sys/class/android_usb/android0
++ GADGET_DIR=/config/usb_gadget
++ LOCAL_IP=192.168.2.15
++ DONE_SWITCH=no
++ [ /init = /init-debug ]
++ [ no = no ]
++ EXPLICIT_BUSYBOX=
++ TELNET_DEBUG_PORT=23
++ /bin/busybox --install -s
++ date
+Sat Nov 28 00:15:15 UTC 1970
++ do_mount_devprocsys
++ echo ########################## mounting devprocsys
+########################## mounting devprocsys
++ mkdir /dev
+mkdir: can't create directory '/dev': File exists
++ mount -t devtmpfs devtmpfs /dev
++ mkdir /dev/pts
++ mount -t devpts devpts /dev/pts
++ mkdir /proc
++ mkdir /sys
++ mount -t sysfs sysfs /sys
++ mount -t proc proc /proc
++ mkdir /config
++ mount -t configfs none /config
++ do_hotplug_scan
++ echo /sbin/mdev
++ mdev -s
++ sleep 2
++ cat /init.log
+}}}