Samsung Galaxy Core Plus (samsung-cs02)

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Samsung Galaxy Core Plus
Manufacturer Samsung
Name Galaxy Core Plus
Codename samsung-cs02
Released 2013
Category testing
Original software Android 4.2.2
postmarketOS kernel 3.4.5
Hardware
Chipset Broadcom BCM21664T
CPU 2x 1.2 GHz Cortex-A9
GPU VideoCore IV
Display 480x800 (217dpi)
Storage 4 GB
Memory 768 MB
Architecture armv7
Features
USB Networking
Works
Flashing
Works
Touchscreen
Works
Display
Works
WiFi
Works
Xwayland
FDE
Mainline
Partial
Battery
Works
3D Acceleration
Accelerometer
Works
Audio
Partial
Bluetooth
Camera
GPS
Mobile data
Broken
SMS
Broken
Calls
Broken
USB OTG



Samsung Galaxy Core Plus G3500 (Broadcom variant)

Contributors

  • Santeri3700

Maintainer(s)

  • Santeri3700

Users owning this device


What works

  • Screen
  • Audio* (more information below)
  • USB Network
  • Wifi*
  • Touch (/dev/input/event4)
  • Proximity sensor (/dev/input/event0)
    • enable with echo 1 > /sys/class/input/input0/enable
  • Accelerometer (/dev/input/event1)
    • enable with echo 1 > /sys/class/input/input1/enable
  • Compass (/dev/input/event2)
    • enable with echo 1 > /sys/class/input/input2/enable

What does not work

  • Setting up wifi using NetworkManager GUI/applet. (nm-applet never asks for the PSK, manually setting the password works and nmtui works too)
  • Everything else

Audio

Audio works partially and only with Alsa. PulseAudio doesn't seem to work even when changing the sample rate to 48KHz.

  • Playback only work with with the sample rate of 48KHz. Anything else than 48KHz results in silence or or crackling (and the logs say "underrun!!!")
  • Recording works only with the sample rate of 48KHz and mono only.

Alsa record & playback test: arecord -f dat -c 1 | aplay -f S16_LE -r 48000 -c 1


Misc

  • CMDLINE: console=ttyS2,115200n8 mem=738M cma0=0M carveout0=0M vmalloc=136M androidboot.console=ttyS2 logbuf_nocache=1 sec_debug.reset_reason=0x1A2B3C00 sec_debug.level=0 androidboot.debug_level=0x4f4c loglevel=0 sec_log=0x70000@0xae900000 bootloaderfb=0xae980000,0x180000 lpcharge=0 cordon=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx androidboot.emmc_checksum=3 brd_ver=2 androidboot.serialno=xxxxxxxxxxxxxxxx
  • Both 150kΩ and 619kΩ resistors work for a serial debug cable.

Bootloader / S-Boot 4.0

To abort auto-boot, press Enter while the phone is powered on. You will need a serial debug cable to be connected before powering on.

Use command help to get started and use command log to print the output log if commands don't print output immediately.

More instructions about the log level and debug printing can be found below.

Version: Samsung S-Boot 4.0-2930239 for SM-G350 (Jul 4 2016 - 11:58:36)

Default printenv

: REBOOT_MODE: 0
: SWITCH_SEL: 1
: DEBUG_LEVEL: 20300
: KERNEL_LOG_LEVEL: 17484
: SUD_MODE: 0
: DN_ERROR: 0
: CHECKSUM: 3
: INT_RSVD6: 0
: INT_RSVD7: 0
: INT_RSVD8: 0
: INT_RSVD9: 0
: CMDLINE: console=ttyS2,115200n8 mem=738M cma0=0M carveout0=0M vmalloc=136M androidboot.console=ttyS2 logbuf_nocache=1
: STR_RSVD1: (null)
: STR_RSVD2: (null)


How to enable S-Boot & Kernel debug output (persistent)

S-BOOT # setenv KERNEL_LOG_LEVEL 17740
argv[0]: setenv
argv[1]: KERNEL_LOG_LEVEL
argv[2]: 17740
S-BOOT # printenv
: REBOOT_MODE: 0
: SWITCH_SEL: 1
: DEBUG_LEVEL: 20300
: KERNEL_LOG_LEVEL: 17740 <--- New log level appears here
: SUD_MODE: 0
: DN_ERROR: 0
: CHECKSUM: 3
: INT_RSVD6: 0
: INT_RSVD7: 0
: INT_RSVD8: 0
: INT_RSVD9: 0
: CMDLINE: console=ttyS2,115200n8 mem=738M cma0=0M carveout0=0M vmalloc=136M androidboot.console=ttyS2 logbuf_nocache=1
: STR_RSVD1: (null)
: STR_RSVD2: (null)
S-BOOT # saveenv
S-BOOT # reset


Hardware

WIFI/Bluetooth/FM-Radio Broadcom BCM4330LB2KUBG
NFC Broadcom BCM2079(1b05)
PMU Broadcom BCM59054A1IUB1G
Accelerometer & compass Bosch BMC150
Proximity sensor Sharp GP2AP002
Display BOE BF050WVM-500-1HP0 (5.0" A-si TFT)
LCD Driver Himax HX8369 (480x800)
Rear camera Samsung S5K4ECGX (5.0MP)
Front camera SR030PC50 (0.3MP)
Capacitive touch buttons sensor Broadcom BCM20793MKML4G
Storage/EMMC Samsung KMK5U000YM-B309 (4GB)
Platform Hawaii (Broadcom)
Family KONA (Broadcom)

How to enter flash mode

  • Press volume down and the home key, then press the power button.
  • Maintain volume down and home pressed until a warning screen comes up
  • Press volume up to confirm


Links