Samsung Galaxy Mini 2 (samsung-s6500d)

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Samsung Galaxy Mini 2
Samsung s6500d
Samsung s6500d
Manufacturer Samsung
Name Galaxy Mini 2
Codename s6500d, s6500, jena
Released 2012
Original software Android 2.3.4
postmarketOS kernel 2.6 from Cyanogen
Hardware
Chipset Snapdragon S1 / MSM7227A
CPU ARM Cortex-A5 800 Mhz
GPU Adreno 200
Display 320×480
Storage 4GB
Memory 512MB

Contributors

What works

  • It boots
  • SSH through USB
  • display
  • flashing

What does not work

  • Restart after ~2 minutes 22 seconds
  • No input (keys and screen)
  • osk-keyboard
  • Wi-Fi
  • XWayland
  • FDE
  • Not mainlined
  • No charging with turned off phone (is it even supported?)
  • 3D acceleration
  • Accelerometers and other sensors
  • Audio
  • Bluetooth
  • Camera
  • GPS
  • Mobile data
  • SMS
  • Voice

To do

informations below may be chaotic and change often

SMSM_RESET

Most annoying problem sunce everything on the phone has to be done within 2 minutes. After about 2mins 22secs phone reboots with dmesg showing SMSM: Modem SMSM state changed to SMSM_RESET This message is hardcoded into arch/arm/mach-msm/smd.c Check what causes if, if it can be avoided by hanging defconfig or adding some drivers/blobs


Touch screen

The screen as well as two touch buttons (menu and back) are combined together as /dev/input/event1. It displays some sort of animation when pressing buttons in postmarket demos window in weston but only for first press or two. weston-calibrate does not work


Home button and volume buttons are /dev/input/event1, where power button is recognised as /dev/input/event6

Mainline

Currently we have working 2.6 kernel, no DTS files for qcom-msm7227a.

Get data form all over the kernel source code (mainly arch/mach-msm/board-<board name>.c for starters and recreate it in .dts file(s).

Useful links (mainly dts stuff)

The Mainline Kernel – our docs about mainlining

Qualcomm mainline porting — our sparse docs about Qualcomm mainlining

Device Tree – The Disaster so Far(pdf) – introduction to DT and basic knowledge how to move from board files do DT

Device Tree for dummies(pdf) – a little bit more complex infoa bout DT files

Halium project docs on mainlining – has a nice list where to look for ready solutions

Qualcomm SOC Mainlining Project – sadly no MSM7227a

Allwinner SOC Mainlining Project – not useful for this phone

Devicetree.org specification

Documentation/devicetree/ inside linux kernel files, should contain newest documentation about dts files, should be most reliable source of information

S6500d fork

https://github.com/Halamix2/pmbootstrap/tree/device-samsung-s6500d

How to enter flash mode

Press power button and hold home button and VOL-

Installation

For now see Installation Guide and Flashing on Porting to a new device

Partitions

fdisk -l /dev/mmcblk0
omitting empty partition (25)
Disk /dev/mmcblk0: 3.7 GiB, 3909091328 bytes, 7634944 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000

Device          Boot   Start     End Sectors  Size Id Type
/dev/mmcblk0p1  *          1      40      40   20K 4d QNX4.x
/dev/mmcblk0p2            41     340     300  150K 45 unknown
/dev/mmcblk0p3           341   41300   40960   20M  c W95 FAT32 (LBA)
/dev/mmcblk0p4         41301 7634943 7593643  3.6G  5 Extended
/dev/mmcblk0p5         49152   51151    2000 1000K 46 unknown
/dev/mmcblk0p6         51152   53151    2000 1000K 47 unknown
/dev/mmcblk0p7         53152   57151    4000    2M 5d unknown
/dev/mmcblk0p8         57152   81727   24576   12M 48 unknown
/dev/mmcblk0p9         81728   87871    6144    3M 4a unknown
/dev/mmcblk0p10        87872   94015    6144    3M 4b unknown
/dev/mmcblk0p11        94016  110399   16384    8M 90 unknown
/dev/mmcblk0p12       110400  134975   24576   12M 91 unknown
/dev/mmcblk0p13       134976  143167    8192    4M 92 unknown
/dev/mmcblk0p14       143168  151359    8192    4M 93 Amoeba
/dev/mmcblk0p15       151360  152383    1024  512K 95 unknown
/dev/mmcblk0p16       152384 1176383 1024000  500M 82 Linux swap / Solaris
/dev/mmcblk0p17      1176384 1483583  307200  150M 94 Amoeba BBT
/dev/mmcblk0p18      1483584 3396415 1912832  934M 83 Linux
/dev/mmcblk0p19      3396416 3420991   24576   12M 65 Novell Netware 386
/dev/mmcblk0p20      3420992 3470143   49152   24M 9a unknown
/dev/mmcblk0p21      3470144 3478335    8192    4M 63 GNU HURD or SysV
/dev/mmcblk0p22      3478336 3580735  102400   50M 67 unknown
/dev/mmcblk0p23      3580736 7429803 3849068  1.9G 64 Novell Netware 286
/dev/mmcblk0p24      7429804 7437995    8192    4M 58 unknown