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Sailfish/Backup Device

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(Added command to set up an IP for the PC - →‎Using prebuilt image)
m (add links to https://github.com/djselbeck/jollarecovery)
 
(3 intermediate revisions by 2 users not shown)
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* fastboot
 
* fastboot
−
** Linux: 64-bit version in git of jollarecovery
+
** Linux: 64-bit version in [https://github.com/djselbeck/jollarecovery git of jollarecovery]
 
** Mac OS X: [http://forum.xda-developers.com/showthread.php?t=1917237 instructions]
 
** Mac OS X: [http://forum.xda-developers.com/showthread.php?t=1917237 instructions]
 
* mkbootimg (x64 Linux version in git of jollarecovery)
 
* mkbootimg (x64 Linux version in git of jollarecovery)
−
** Linux: 64-bit version in git of jollarecovery
+
** Linux: 64-bit version in [https://github.com/djselbeck/jollarecovery git of jollarecovery]
 
* Cross-compile toolchain for ''armv7hl-hardfloat-linux-gnueabi'', if you want to compile your own kernel
 
* Cross-compile toolchain for ''armv7hl-hardfloat-linux-gnueabi'', if you want to compile your own kernel
 
* telnet client
 
* telnet client
Line 16: Line 16:
  
 
* Download the [https://github.com/djselbeck/jollarecovery/raw/master/boot-telnet-initrd.img boot image]
 
* Download the [https://github.com/djselbeck/jollarecovery/raw/master/boot-telnet-initrd.img boot image]
−
* Start fastboot on your computer (may need to be run as root)
+
* Start fastboot on your computer (may need to be run as root) ('''This is not possible with bootloader after update to 1.0.25''')
 
   $ fastboot -i 0x2931 boot boot-telnet-initrd.img
 
   $ fastboot -i 0x2931 boot boot-telnet-initrd.img
 
* While holding the volume down key pressed, connect the USB cable
 
* While holding the volume down key pressed, connect the USB cable
Line 36: Line 36:
 
* Reboot normally
 
* Reboot normally
  
−
= Compile own kernel image =  
+
= Build your own recovery image =  
  
−
== Create initrd tree ==
+
== Building the kernel ==
  
−
* Download source tree at: https://github.com/djselbeck/jollarecovery for example to /home/user/jollarecovery
+
# Download sources at: https://github.com/KonstaT/sailfishos_kernel_jolla_msm8930/
 +
# <code>export ARCH=arm</code>
 +
# <code>export CROSS_COMPILE=armv7hl-hardfloat-linux-gnueabi-</code> (replace with your arm crosscompiler)
 +
# Make default config: <code>make sbj_defconfig</code>
 +
# Change config with <code>make menuconfig</code> (see for example https://github.com/djselbeck/jollarecovery/blob/master/kernelconfig). Setting a builtin CONFIG_CMDLINE here is optional as you can set one using mkbootimg.
 +
# <code>make -j4 zImage</code>
  
 +
== Building a initramfs ==
  
−
== Build Kernel image ==
+
This is a standard Linux concept and there's plenty of documentation around the web and this wiki. You may also use the initramfs in https://github.com/djselbeck/jollarecovery . To create a very simple initramfs, either use a crosscompiler (scratchbox2, crossdev), or just copy the binaries (and libraries!) from the Jolla device. Once you've done that:
−
* Download sources at: https://github.com/KonstaT/sailfishos_kernel_jolla_msm8930/
+
 
−
* export ARCH=arm
+
# In the directory where the initramfs directory is stored, <code>find . | cpio -H newc -o | gzip > ../ramfs.cpio.gz</code>
−
* export CROSS_COMPILE=armv7hl-hardfloat-linux-gnueabi- (replace with your arm crosscompiler)
+
 
−
* Make default config: <code>make sbj_defconfig</code>
+
== Packing everything into a boot.img ==
−
* Change config with make menuconfig (see for e.x. https://github.com/djselbeck/jollarecovery/blob/master/kernelconfig)
+
 
−
* Set CONFIG_CMDLINE: root=/dev/ram0 rw init=/init androidboot.hardware=qcom user_debug=31 ehci-hcd.park=3 maxcpus=2
+
<code><nowiki>mkbootimg --cmdline 'root=/dev/ram0 rw init=/init androidboot.hardware=qcom user_debug=31 ehci-hcd.park=3 maxcpus=2' --base 0x00000000 --pagesize 2048 --kernel_offset 0x80208000 --ramdisk_offset 0x82200000 --second_offset 0x81100000 --tags_offset 0x80200100 --board '' --ramdisk ramfs.cpio.gz --kernel kernelsourcetreepath/arch/arm/boot/zImage --output boot.img</nowiki></code>
−
* Set CONFIG_CMDLINE_FORCE
+
−
* Set General Setup->Initramfs source file(s) to your path of initrd-root tree, example (/home/user/jollarecovery/root)
+
−
* make -j8 zImage
+
−
* create bootable image:
+
−
** mkbootimg --cmdline '' --base 0x00000000 --pagesize 2048 --kernel_offset 0x80208000 --ramdisk_offset 0x82200000 --second_offset 0x81100000 --tags_offset 0x80200100 --board '' --ramdisk boot.img-ramdisk --kernel kernelsourcetreepath/arch/arm/boot/zImage --output "boot-telnet-initrd.img"
+

Latest revision as of 22:09, 15 January 2014

DISCLAIMER: Be careful with all your actions. The author of this page will not take any responsibility for you if you brick your device. YOU ARE DOING ALL THE FOLLOWING STEPS ON YOUR OWN. Please make sure your device is fully charged

Prerequisites:

  • fastboot
  • mkbootimg (x64 Linux version in git of jollarecovery)
  • Cross-compile toolchain for armv7hl-hardfloat-linux-gnueabi, if you want to compile your own kernel
  • telnet client
  • Patience
  • MicroSD card with a minimum capacity of 16GB (formatted with a filesystem capable of storing files with 15GB size, e.g. ext4 or btrfs, not FAT32)

Contents

[edit] Using prebuilt image

  • Download the boot image
  • Start fastboot on your computer (may need to be run as root) (This is not possible with bootloader after update to 1.0.25) 
 $ fastboot -i 0x2931 boot boot-telnet-initrd.img
  • While holding the volume down key pressed, connect the USB cable
  • Jolla logo should appear, message "fastboot mode" on the very first line of the display
  • Check if LED turns blue and wait for it to turn red after some time
  • As soon as the LED is red, your network is up and running with the IP 192.168.42.17 and should be running a DHCP server
  • Configure the USB networking on your computer accordingly (if DHCP fails, try "sudo ifconfig usb0 192.168.42.18 netmask 255.255.255.0 up")
  • Connect to Jolla using telnet 
 $ telnet 192.168.42.17
  • Mount your SD card 
 $ mkdir /sd
 $ mount /dev/mmcblk1p1 /sd
  • Backup all your internal eMMC partitons with: 
 $ cd /dev
 $ for i in mmcblk0p* ; do echo $i; dd if=$i of=/sd/$i; done; sync
  • Wait a long time until the command finishes
  • Unmount the SD card 
 $ umount /sd
  • Reboot normally

[edit] Build your own recovery image

[edit] Building the kernel

  1. Download sources at: https://github.com/KonstaT/sailfishos_kernel_jolla_msm8930/
  2. export ARCH=arm
  3. export CROSS_COMPILE=armv7hl-hardfloat-linux-gnueabi- (replace with your arm crosscompiler)
  4. Make default config: make sbj_defconfig
  5. Change config with make menuconfig (see for example https://github.com/djselbeck/jollarecovery/blob/master/kernelconfig). Setting a builtin CONFIG_CMDLINE here is optional as you can set one using mkbootimg.
  6. make -j4 zImage

[edit] Building a initramfs

This is a standard Linux concept and there's plenty of documentation around the web and this wiki. You may also use the initramfs in https://github.com/djselbeck/jollarecovery . To create a very simple initramfs, either use a crosscompiler (scratchbox2, crossdev), or just copy the binaries (and libraries!) from the Jolla device. Once you've done that:

  1. In the directory where the initramfs directory is stored, find . | cpio -H newc -o | gzip > ../ramfs.cpio.gz

[edit] Packing everything into a boot.img

mkbootimg --cmdline 'root=/dev/ram0 rw init=/init androidboot.hardware=qcom user_debug=31 ehci-hcd.park=3 maxcpus=2' --base 0x00000000 --pagesize 2048 --kernel_offset 0x80208000 --ramdisk_offset 0x82200000 --second_offset 0x81100000 --tags_offset 0x80200100 --board '' --ramdisk ramfs.cpio.gz --kernel kernelsourcetreepath/arch/arm/boot/zImage --output boot.img

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