Galaxy Nexus (GT-I9250)¶

• Table of contents
• Galaxy Nexus (GT-I9250)
  • Replicant status
  • Replicant installation
  • Replicant build
  • Replicant development
  • Freedom and privacy/security issues
  • Research
    • Hardware table
    • Software configuration
      • Partitions

	Device	Galaxy Nexus (GT-I9250)
	Manufacturer	Google/Samsung
	Release date	November 2011
	Codename	maguro
	Status	Maintained
	Variants	GSM: GT-I9250
	Latest images	Replicant 6.0 0003

Replicant status¶

Replicant status for the Galaxy Nexus (GT-I9250): ReplicantStatus Replicant 6.0

Replicant installation¶

To install Replicant on the Galaxy Nexus (GT-I9250), see the RecoveryInstallationWithHeimdall and MinorVersionUpgrade wiki pages.

Replicant build¶

Replicant build for the Galaxy Nexus (GT-I9250): GalaxyNexusI9250Build

Replicant development¶

• Galaxy Nexus (GT-I9250) serial research: GalaxyNexusI9250SerialConsole
• Exemplary serial setup: SamsungSerial

Freedom and privacy/security issues¶

• Proprietary hardware
• Proprietary firmwares, some of which have to be loaded by the system: GalaxyNexusI9250LoadedFirmwares
• Proprietary modem system
• Proprietary bootrom
• Proprietary and signed bootloader: GalaxyNexusI9250Bootloader

Privacy/security issues on the Galaxy Nexus (GT-I9250): GalaxyNexusI9250PrivacySecurityIssues

Research¶

OMAP4 Ducati camera

Hardware table¶

Component	Name	Source	Status
SoC	TI OMAP 4460	Linux kernel	Linux kernel support
GPU	PowerVR SGX540	https://wiki.lineageos.org/devices/maguro	Linux kernel support, proprietary userspace
Audio Codec	TWL6040	Linux kernel, ifixit	Linux kernel support (ALSA)
Power management chip			Linux kernel support
Modem	XMM6260	Linux kernel	Free userspace implementation: Samsung-RIL/libsamsung-ipc
Wi-Fi	BCM4330	Linux kernel	Linux kernel support, proprietary loaded firmware
Bluetooth
NFC	PN544	Android userspace	Linux kernel support
GPS	GSD4t	Android userspace	Proprietary userspace, no free implementation: GSD4t
Accelerometer	BMA250	Linux kernel	Linux kernel support, free userspace
Compass	YAS530	Kernel sources	Linux kernel support, free userspace

In an Ifixit teardown of the device the Step 12 we can see the following comments: "Samsung KMVYL000LM Multichip Memory Package, which we believe to house 512 MB of RAM in addition to the main processor." While the device has 1G of RAM, the SOC is probably in this chip package through techniques like package on package or using wire bonding to put different chips together in a single package.

Software configuration¶

The booloader of this device have two software interface to load code:

• The Fastboot interface can be used after holding the volume-down, volume-up and power key combination while powering up the device.
• The Heimdall/odin interface can be used after holding the volume-down and power key combination while powering up the device.

See GalaxyNexusI9250Pit for PIT partition table.

Partitions¶

PIT	Linux name	mount point	partition type	block device	Description
system		/system	ext4	mmcblk0p10	system partition
boot		None	bootimage (mkbootimg)	mmcblk0p7	boot.img partition
recovery		None	bootimage (mkbootimg)	mmcblk0p8	recovery partition
userdata		/data	ext4	mmcblk0p12	data partition
efs		/factory	ext4	mmcblk0p3	modem data partition (content)