Replicant

h1. Galaxy S III 4G (GT-I9305)

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|/8. !galaxys34g.png! | *Device* | Galaxy S III 4G (GT-I9305) |

| *Manufacturer* | Samsung |

| *Release date* | September 2012 |

| *Codename* | @i9305@ |

| *Status* | Uncompleted |

| *Supported models* | GT-I9305 |

| *Latest images* | [[ReplicantImages#Replicant-60-0002-images|Replicant 6.0 0002]] |

h2. Replicant status

Replicant status for the Galaxy S III 4G (GT-I9305): [[ReplicantStatus#Replicant-60|ReplicantStatus Replicant 6.0]]

Also, the Galaxy S3 4G (I9305) has an issue that makes it suddenly reboot. See the related "bugreport":https://redmine.replicant.us/issues/1834 for more details.

h2. Replicant installation

Replicant installation for the Galaxy S III 4G (GT-I9305): [[ReplicantStatus#Replicant-60|ReplicantStatus Replicant 6.0]]

h2. Replicant usage

* Galaxy S III 4G (GT-I9305) compass calibration: [[GalaxyS3I9300CompassCalibration]]

h2. Replicant build

Replicant build for the Galaxy S III 4G (GT-I9305): [[GalaxyS3I9305Build]]

h2. Replicant development

* Galaxy S III 4G (GT-I9305) UART: [[GalaxyS3I9300UART]]

h2. Freedom and privacy/security evaluation

See [[GalaxyS3I9305PrivacySecurityEvaluation]] for more details.

h2. Research

* [[QMI-RIL]] development of a modem interface

* The Galaxy SIII 4G (GT-I9305) has a Qualcomm MDM9615 modem. The "quectel-modems osmocom wiki":https://osmocom.org/projects/quectel-modems/wiki/Wiki has some information related to running GNU/Linux on that modem, and information in its hardware:

** "Qualcomm MDM9615":https://osmocom.org/projects/quectel-modems/wiki/Qualcomm_MDM9615

** "Samsung Galaxy SIII 4G":https://osmocom.org/projects/quectel-modems/wiki/Samsung_Galaxy_SIII_4G_(GT-I9305)

h3. Hardware table

|_. Component |_. Name |_. Source |_. Status |

| SoC | Samsung Exynos 4412 | "iFixit":http://www.ifixit.com/Teardown/Samsung+Galaxy+S+III+Teardown/9391/2 | Linux kernel support |

| GPU | Mali 400 | "The Exynos Wikipedia page":https://secure.wikimedia.org/wikipedia/en/wiki/Exynos | Linux kernel and secret userspace |

| Audio Codec | WM8994 | Linux kernel | Linux kernel support (ALSA) |

| Modem | Qualcomm MDM9615 | Linux kernel | "free library for QMI protocol":https://www.freedesktop.org/wiki/Software/libqmi/, no free RIL yet |

| Wi-Fi | BCM4334 | Linux kernel | Linux kernel support, proprietary loaded firmware |

| Bluetooth | BCM4334 | Linux kernel | Linux kernel support, proprietary loaded firmware |

| NFC | PN544 | Linux kernel | Linux kernel support |

| GPS | Qualcomm MDM9615 | "Linux kernel":https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/clk/qcom/gcc-mdm9615.c?h=v5.2.7 | "partly free userspace":https://github.com/LineageOS/android_device_samsung_smdk4412-qcom-common/tree/cm-14.1/gps |

| Accelerometer | LSM330DLC | Linux kernel | Linux kernel support, free userspace |

| Compass | AKM8975 | Kernel sources | Linux kernel support, free userspace |

| Light/proximity sensor | CM36651 | Kernel sources | Linux kernel support, free userspace |

| Gyroscope | LSM330DLC | Kernel sources | Linux kernel support, free userspace |

| Barometer | LPS331AP | Kernel sources | Linux kernel support, free userspace |

| Camera (back) | S5C73M3 | Linux kernel | Linux kernel support, free userspace |

| Camera (front) | S5K6A3 | Linux kernel | Linux kernel support, free userspace, proprietary loaded firmware |

h3. Software Configuration

* [[GalaxyS3I9305Pit]]: Galaxy S III 4G (GT-I9305) PIT (a partition table)

* system fstab: "fstab.smdk4x12":https://git.replicant.us/replicant/device_samsung_i9305/tree/rootdir/fstab.smdk4x12

h4. Partitions

WARNING some content may not be the same on your device

|_. PIT      |_. Linux name | block device  |_. mount point |_. partition type      |_. block device |_. Description            | size or size@location for 16G eMMC |

| SYSTEM     | SYSTEM       |               | /system       | ext4                  | mmcblk0p13     | system partition         |                                    |

| BOOT       | BOOT         |               | None          | bootimage (mkbootimg) | mmcblk0p8      | boot.img partition       |                                    |

| RECOVERY   | RECOVERY     |               | None          | bootimage (mkbootimg) | mmcblk0p9      | recovery partition       |                                    |

| USERDATA   | USERDATA     |               | /data         | ext4                  | mmcblk0p16     | data partition           |                                    |

| RADIO      | RADIO        |               | /firmware     | vfat                  |                | modem firmware partition |                                    |

| EFS        | EFS          |               | /efs          | ext4                  | mmcblk0p3      | modem data partition     |                                    |

| TOMBSTONES | TOMBSTONES   |               | /tombstones   | ext4                  |                | ?                        |                                    |

h3. Mainlining

See https://wiki.postmarketos.org/wiki/Samsung_Galaxy_SIII_LTE_(samsung-i9305)#Mainline_Kernel, https://blog.forkwhiletrue.me/pages/midas-mainline/. The mainline kernel probably needs the equivalent of https://github.com/LineageOS/android_kernel_samsung_smdk4412/blob/b7ffe7f2aea2391737cdeac2a33217ee0ea4f2ba/arch/arm/mach-exynos/mdm_hsic_pm.c#L1003 for the modem to work.