Neo 1973 hardware

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[[Image:Gta01b v3 top.jpg|thumb|400px|display (top) side]]
+
{{Neo1973}}
[[Image:Gta01b v3 bottom.jpg|thumb|400px|component (back) side]]
+
== Main components ==
+
=== Processor ===
+
  
The main Processor (CPU) of the Neo1973 is a Samsung S3C2410AL-26 (Capable of running up to 266 MHz)
+
Openmoko is a software distribution stack that sits on top of a [[hardware]] platform.  The [[Neo1973]] phone is the first hardware platform to take advantage of Openmoko.  You can find specifics of the [[:Category:Neo1973 Hardware | Neo1973 Hardware]] by reviewing this introduction page and the pages in the category as shown at the bottom of this page.
  
* Product Homepage: http://www.samsung.com/products/semiconductor/MobileSoC/ApplicationProcessor/ARM9Series/S3C2410/S3C2410.htm
+
'''Note that this page is about the first Openmoko phone which is now discontinued. See details on the second Openmoko phone at this page - [[Neo FreeRunner GTA02 Hardware]].'''
* User Manual: http://www.samsung.com/Products/Semiconductor/MobileSoC/ApplicationProcessor/ARM9Series/S3C2410/2410UserManual.pdf
+
* BSDL File: http://www.samsung.com/Products/Semiconductor/MobileSoC/ApplicationProcessor/ARM9Series/S3C2410/S3C2410_BGA_BSDLJTAGFILE.bsd
+
* GPIO Assignments: https://svn.openmoko.org/trunk/doc/hardware/GTA01Bv3/gpio.txt
+
  
=== Flash ===
+
[[Image:Gta01b v3 top.jpg|thumb|400px|display (top) side]]
 +
[[Image:Gta01b v3 bottom.jpg|thumb|400px|component (back) side]]
  
64MB Samsung NAND flash (K9F1208U0B) attached to S3C2410 NAND controller.
+
==User experiences of Phase 0 hardware==
 +
[[Wishlist:Neo1973_P0_Review]]
  
* Product Homepage: http://www.samsung.com/products/semiconductor/NANDFlash/SLC_SmallBlock/512Mbit/K9F1208U0B/K9F1208U0B.htm
+
==User reports of robustness==
* Data Sheet: http://www.samsung.com/Products/Semiconductor/NANDFlash/SLC_SmallBlock/512Mbit/K9F1208U0B/ds_k9f1208x0b_rev03.pdf
+
User experiences - drops onto concrete - ... [[Neo1973 Robustness]]
* Connected to: S3C2410 NAND controller
+
  
This is the only flash memory in the device. The S3C2410 boots directly from nand, using the [[Steppingstone]].
+
== Physical Dimensions ==
 +
* 120.7 x 62 x 18.5 mm (4.75 x 2.44 x 0.728 inch)
 +
* 184 +/- 5 g (6.5 ounces)
 +
* For the purposes of acquiring/cutting a properly sized screen protector, the display hole of the case is about 45 x 59 mm, while the top cover internal frame can house up to a 53 x 74 mm protector; sizes much larger than the display hole would obviously necessitate removing the front cover for installation.
 +
* A Useful size comparison between the Neo1973, iPhone, Motorola A1200 and the SEM600i can be seen at [http://www.sizeasy.com/page/size_comparison/5512-Neo1973-vs-Apple-iPhone-vs-M600i-2-vs-A-1200 sizeasy]
  
We only use free software, no proprietary flash file systems.  For a full description of how it is used, see [[NAND_bad_blocks]]
+
== Main components ==
 
+
=== RAM ===
+
 
+
128MB SDRAM (2x Samsung K4M511633C) attached to S3C2410 SDRAM controller
+
* Product Homepage: http://www.samsung.com/Products/Semiconductor/MobileSDRAM/MobileSDRSDRAM/512Mbit/K4M511633C/K4M511633C.htm
+
* Data Sheet: http://www.samsung.com/Products/Semiconductor/MobileSDRAM/MobileSDRSDRAM/512Mbit/K4M511633C/ds_k4m511633c.pdf
+
* Connected to: S3C2410
+
 
+
=== GSM/GPRS ===
+
 
+
The GSM/GPRS modem is Texas Instruments Calypso based.
+
 
+
* Connected to: S3C2410 UART1 (full-uart, RxD, TxD, CTS, RTS), /dev/ttySAC0 in userspace
+
* PM Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/gta01-power_control.patch
+
 
+
==== CALYPSO digital baseband ====
+
 
+
Unfortunately we cannot provide many details on the GSM chipset due to very tight NDA's.  However, this is not neccessarily required, since it interfaces using a standard UART serial line with the S3C2410.  On that interface, GSM 07.05, 07.10 and other standardized protocols are used.
+
 
+
==== TWL3014 analog baseband ====
+
 
+
Product Homepage: http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12295&contentId=4703
+
 
+
==== TRF6151 RF Transceiver ====
+
 
+
Product Homepage: http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12296&contentId=4701
+
 
+
=== AGPS ===
+
Hammerhead AGPS from Global Locate.
+
 
+
* Product Homepage: http://www.globallocate.com/SEMICONDUCTORS/SEMI_HAMMER_Frameset.htm
+
* Connected to: S3C2410 UART2 (full-uart, RxD, TxD, CTS, RTS) /dev/ttySAC1 in userspace
+
* Driver: Implemented as userspace agps daemon (agpsd)
+
* PM Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/gta01-power_control.patch
+
 
+
=== microSD-Card ===
+
 
+
The Neo1973 has one microSD aka Transflash slot.
+
* Connected to: S3C2410 MMC/SD controller
+
* Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/s3c_mci.patch
+
* Backlight Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/gta01-backlight.patch
+
* [[Supported microSD cards]]
+
 
+
=== LCD Display Module (LCM) ===
+
 
+
This is a 2.8" 480x640 toppoly (tpo) TD028TTEC1 module, using a Toshiba JBT6K74 TFT LCD Driver Chipset.
+
* Homepage: http://www.tpo.biz/ENG/business-eng/Activer-Matrix-VGA.htm
+
* Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/gta01-jbt6k74.patch
+
* Connected to: S3C2410 Display Controller
+
 
+
==== Touch Screen ====
+
 
+
* Connected to: S3C2410 TS controller
+
* Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/qt2410-touchscreen.patch* Backlight Driver:
+
 
+
=== Bluetooth ===
+
 
+
Delta DFBM-CS320 Class2 Module, using CSR BlueCore4
+
 
+
* Data Sheet: http://www.delta.com.tw/product/cp/vco/BT/download/pdf/CS/2.DFBM-CS320.pdf
+
* CSR Data Sheet: http://www.csrsupport.com/download/2302/CS-101564-DSP10%20BlueCore4-ROM%20Product%20Data%20Sheet.pdf
+
* Driver: Stock Linux Kernel BlueZ
+
* Connected to: S3C2410 USB Host controller (OHCI)
+
* PM Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/gta01-power_control.patch
+
 
+
=== Vibrator ===
+
  
 +
{|
 +
|-
 +
! style="width:250px" | Component
 +
! Chip or Info
 +
|-
 +
| ''' Main Components '''
 +
|
 +
|-
 +
| Processor
 +
| [[Samsung S3C2410]]
 +
|-
 +
| NAND-Flash
 +
| 64MB into [[Samsung K9F1208U0B]]
 +
|-
 +
| SDRAM
 +
| 128MB from the 2 [[Samsung K4M511633C]]
 +
|-
 +
| [[GSM]]/[[GPRS]]
 +
| Texas Instruments Calypso based, probably [[TI Calypso D751992AZHH]]
 +
|-
 +
| [[GPS]]/[[AGPS]]
 +
| [[Hammerhead PMB 2520]].
 +
|-
 +
| microSD-Card
 +
| Supported throught the [[Samsung_S3C2410]]
 +
|-
 +
| LCD
 +
|
 +
|-
 +
|    LCD Module (LCM)
 +
| [[TPO TD028TTEC1]] module
 +
|-
 +
| style='vertical-align:top' |     Touch Screen
 +
| More info, see [[TPO TD028TTEC1]]
 +
|-
 +
| Stylus
 +
| Seemingly identical to [http://cgi.ebay.com/4in1-PDA-Stylus-LED-Light-Torch-Laser-Pointer-Pen-h7_W0QQitemZ280089656134QQihZ018QQcategoryZ48677QQrdZ1QQcmdZViewItem this one on ebay]
 +
|-
 +
| Bluetooth
 +
|
 +
|-
 +
|    Bluetooth module
 +
| [[Delta DFBM-CS320 Class2 Module]]
 +
|-
 +
| Bluetooth Headset
 +
| This one is wired via PCM bus from the CSR Bluetooth chip to the Wolfson codec.
 +
|-
 +
| style='vertical-align:top' | Vibrator
 +
|
 
* Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/gta01-vibrator.patch
 
* Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/gta01-vibrator.patch
 
* Connected to: S3C2410 GPIO
 
* Connected to: S3C2410 GPIO
 +
* Controllable via /sys/class/leds/gta01:vibrator
 +
|-
 +
| USB Host
 +
| inside the [[Samsung S3C2410]]
 +
|-
 +
| USB Device
 +
| inside the [[Samsung S3C2410]]
 +
|-
 +
| style='vertical-align:top' | I2C Devices
 +
| The I2C is a simple communication standard intended to move small amounts of data a few inches between chips.
 +
Please see [[I2C | Neo I2C Devices]] for more information & a list of devices & the addresses currently in use & documented for the Neo1973.
 +
|-
 +
| Audio
 +
| See also: [[Neo1973 Audio Subsystem]]
 +
|-
 +
|    Wolfson Codec
 +
| [[WM8753]]
 +
|-
 +
|    Stereo Amplifier
 +
| [[LM4857]]
 +
|-
 +
|    Analog wired Headset
 +
| [[Analog wired Headset]]
 +
|-
 +
| [[Neo_1973_GTA01_Power_Management|Power Management]]
 +
| [[Philips PCF50606]]
 +
|-
 +
| Battery
 +
| [[Neo1973 Battery]]
 +
|-
 +
| style='vertical-align:top' | Buttons
 +
|
 +
* [[Neo1973 Power Button|The Power Button]]
 +
* [[Neo1973 AUX Button|The "Aux" button]]
 +
|-
 +
| Case
 +
| [[Neo1973 case schematics]]
 +
|}
  
=== USB Host ===
+
<!--
 +
Todo for [[User:dolfje]] (please do not remove):
 +
* Add info of sdcard slot (=Transflash slot)
 +
* Add info of the vibrators to a new wikipage
 +
-->
  
The USB Host controller is inside the S3C2410
+
== Alternate cases ==
* Driver: Stock Linux kernel ohci_hcd
+
A number of alternate case designs have been suggested and requested.
 +
[[Alternate Neo1973 case designs]]
  
=== USB Device ===
+
== Hardware revisions==
 +
{{Main|GTA01 revisions}}
  
The USB Device controller is inside the S3C2410
+
===Debug Connector===
* Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/s3c2410_udc.patch
+
{{Main|Debug Board v2}}
  
=== Audio ===
+
===Test points===
  
==== Wolfson Codec ====
+
* GSM RTS - H-TP1531
 +
* GSM CTS - H-TP1530
 +
* GSM Modem on - R10818 - ungrounded end
 +
* GSM_EN - R1501 (not present) - ungrounded end
  
There's a WM8573 Wolfson Microelectronics Codec.
+
== Distinguishing hardware revisions ==
* Product Homepage: http://www.wolfsonmicro.com/products/WM8753/
+
=== Inside the [[U-Boot]] ===
* Data Sheet: http://www.wolfsonmicro.com/uploads/documents/en/WM8753.pdf
+
Every hardware revision has its own u-boot image type. Thus, the U-Boot has the revision hard-coded.
* Connected to: S3C2410 IIS interface
+
The hardware revision is passed on to the kernel via the ATAG mechanism (ATAG_REVISION)
* Driver: https://svn.openmoko.org/trunk/src/target/kernel/patches/asoc.patch
+
  
==== Analog wired Headset ====
+
=== Inside the [[Kernel]] ===
 +
The kernel receives the ATAG_REVISION during bootup, and saves its contents in the "system_rev" global variable.
  
There's a four-ring 2.5mm stereo jack which provides connectivity to old-fashined wired headsets.
+
=== From Userspace ===
 +
The kernel exports the system_rev variable in /proc/cpuinfo as "Revision :" line.
  
The headsets used by Motorola smartphones (A780,A1200, ...) have a compatible configuration
+
??? So does GTA01Bv4 equal the cat /proc/cpuinfo output of
 +
Hardware        : GTA01
 +
Revision        : 0240
  
==== Bluetooth Headset ====
+
== Approval ==
 +
*CE compliance is needed before a product can be sold in the EU. The CE mark indicates that a product complies to the relevant legislation, defined in the  [http://ec.europa.eu/enterprise/newapproach/standardization/harmstds/reflist.html harmonised standards]. This refers also to the most relevant, for the Neo1973,  [http://ec.europa.eu/enterprise/newapproach/standardization/harmstds/reflist/emc.html Directive 89/336/EEC on electromagnetic compatibility] (EMC is the art of assuring [http://en.wikipedia.org/wiki/Electromagnetic_compatibility electromagnetic compatibility] between products). The standards are defined by [http://www.cenelec.org CENELEC] (European Committee for Electrotechnical Standardization), but not verified by any authority. It is the responsibilty of the manufacturer to convince himself that a product is in compliance, and is obligated to be able to prove this (with relevant technical documentation) for a specific product to the authorities on request. Whether the current Phase 1 devices are actually tested against the directives are unknown, no documentation has been disclosed, other than the fact that the devices bear the CE mark.
  
This one is wired via PCM bus from the CSR Bluetooth chip to the Wolfson codec.
+
*[http://www.fcc.gov/ FCC]
  
=== Power Management ===
+
===GTA01 FCC test report===
  
A Philips PCF50606 is used for power management.
+
[http://people.openmoko.org/tony_tu/GTA01/certificate/FCC/ FCC test report]
  
* Data Sheet: http://www.rockbox.org/twiki/pub/Main/DataSheets/pcf50606.pdf
+
===GTA01 CE test report===
* Connected to: S3C2410 via I2C, client address is 0x08.
+
* Driver Source: https://svn.openmoko.org/trunk/src/target/kernel/patches/gta01-pcf50606.patch
+
  
== History ==
+
[http://people.openmoko.org/tony_tu/GTA01/certificate/CE/ CE test report]
  
=== GTA01 ===
+
===GTA01 NCC test report===
  
This is the most simple, non-bluetooth version of the prototype.
+
For Taiwan Import usage:
  
==== GTA01v3 ====
+
[http://people.openmoko.org/tony_tu/GTA01/certificate/NCC/ NCC test report]
  
First generation of prototypes that was given to internal OpenMoko software developers.
+
[[Category:Neo1973 Hardware]]
 
+
Unfortunately not useful at all due to non-working touchscreen.
+
 
+
* ATAG_REVISION: 0x0000130
+
 
+
==== GTA01v4 ====
+
 
+
Second generation of prototypes that was given to Harald + Mickey.
+
 
+
Unfortunately still not useful due to half-working touchscreen.
+
 
+
* ATAG_REVISION: 0x00000140
+
 
+
=== GTA01B ===
+
 
+
This is the bluetooth-enabled fork of GTA01
+
 
+
==== GTA01Bv2 ====
+
 
+
This is the first produced version of the bluetooth-enabled version.
+
 
+
* ATAG_REVISION: 0x00000220
+
 
+
==== GTA01Bv3 ====
+
 
+
This is the second produced version of the bluetooth-enabled version. It contains mainly GPS-related fixes.
+
 
+
* ATAG_REVISION: 0x00000230
+
 
+
This is the version that is shipped in Phase 0
+
 
+
==== GTA01Bv4 ====
+
 
+
This is the version that is shipped in Phase 1
+
 
+
== Distinguishing hardware revisions ==
+
 
+
=== Inside the [[Bootloader]] ===
+
 
+
Every hardware revision has its own u-boot image type.  Thus, the bootloader has the revision hard-coded.
+
The hardware revision is passed on to the kernel via the ATAG mechanism (ATAG_REVISION)
+
 
+
=== Inside the [[Kernel]] ===
+
 
+
The kernel receives the ATAG_REVISION during bootup, and saves its contents in the "system_rev" global variable.
+
 
+
=== From Userspace ===
+
 
+
The kernel exports the system_rev variable in /proc/cpuinfo as "Revision :" line.
+

Latest revision as of 10:25, 10 February 2012

Neo 1973
sold out

(Other phones)

Openmoko is a software distribution stack that sits on top of a hardware platform. The Neo1973 phone is the first hardware platform to take advantage of Openmoko. You can find specifics of the Neo1973 Hardware by reviewing this introduction page and the pages in the category as shown at the bottom of this page.

Note that this page is about the first Openmoko phone which is now discontinued. See details on the second Openmoko phone at this page - Neo FreeRunner GTA02 Hardware.

display (top) side
component (back) side

Contents

[edit] User experiences of Phase 0 hardware

Wishlist:Neo1973_P0_Review

[edit] User reports of robustness

User experiences - drops onto concrete - ... Neo1973 Robustness

[edit] Physical Dimensions

  • 120.7 x 62 x 18.5 mm (4.75 x 2.44 x 0.728 inch)
  • 184 +/- 5 g (6.5 ounces)
  • For the purposes of acquiring/cutting a properly sized screen protector, the display hole of the case is about 45 x 59 mm, while the top cover internal frame can house up to a 53 x 74 mm protector; sizes much larger than the display hole would obviously necessitate removing the front cover for installation.
  • A Useful size comparison between the Neo1973, iPhone, Motorola A1200 and the SEM600i can be seen at sizeasy

[edit] Main components

Component Chip or Info
Main Components
Processor Samsung S3C2410
NAND-Flash 64MB into Samsung K9F1208U0B
SDRAM 128MB from the 2 Samsung K4M511633C
GSM/GPRS Texas Instruments Calypso based, probably TI Calypso D751992AZHH
GPS/AGPS Hammerhead PMB 2520.
microSD-Card Supported throught the Samsung_S3C2410
LCD
   LCD Module (LCM) TPO TD028TTEC1 module
   Touch Screen More info, see TPO TD028TTEC1
Stylus Seemingly identical to this one on ebay
Bluetooth
   Bluetooth module Delta DFBM-CS320 Class2 Module
Bluetooth Headset This one is wired via PCM bus from the CSR Bluetooth chip to the Wolfson codec.
Vibrator
USB Host inside the Samsung S3C2410
USB Device inside the Samsung S3C2410
I2C Devices The I2C is a simple communication standard intended to move small amounts of data a few inches between chips.

Please see Neo I2C Devices for more information & a list of devices & the addresses currently in use & documented for the Neo1973.

Audio See also: Neo1973 Audio Subsystem
   Wolfson Codec WM8753
   Stereo Amplifier LM4857
   Analog wired Headset Analog wired Headset
Power Management Philips PCF50606
Battery Neo1973 Battery
Buttons
Case Neo1973 case schematics


[edit] Alternate cases

A number of alternate case designs have been suggested and requested. Alternate Neo1973 case designs

[edit] Hardware revisions

Main article: GTA01 revisions


[edit] Debug Connector

Main article: Debug Board v2


[edit] Test points

  • GSM RTS - H-TP1531
  • GSM CTS - H-TP1530
  • GSM Modem on - R10818 - ungrounded end
  • GSM_EN - R1501 (not present) - ungrounded end

[edit] Distinguishing hardware revisions

[edit] Inside the U-Boot

Every hardware revision has its own u-boot image type. Thus, the U-Boot has the revision hard-coded. The hardware revision is passed on to the kernel via the ATAG mechanism (ATAG_REVISION)

[edit] Inside the Kernel

The kernel receives the ATAG_REVISION during bootup, and saves its contents in the "system_rev" global variable.

[edit] From Userspace

The kernel exports the system_rev variable in /proc/cpuinfo as "Revision :" line.

??? So does GTA01Bv4 equal the cat /proc/cpuinfo output of

Hardware        : GTA01
Revision        : 0240

[edit] Approval

  • CE compliance is needed before a product can be sold in the EU. The CE mark indicates that a product complies to the relevant legislation, defined in the harmonised standards. This refers also to the most relevant, for the Neo1973, Directive 89/336/EEC on electromagnetic compatibility (EMC is the art of assuring electromagnetic compatibility between products). The standards are defined by CENELEC (European Committee for Electrotechnical Standardization), but not verified by any authority. It is the responsibilty of the manufacturer to convince himself that a product is in compliance, and is obligated to be able to prove this (with relevant technical documentation) for a specific product to the authorities on request. Whether the current Phase 1 devices are actually tested against the directives are unknown, no documentation has been disclosed, other than the fact that the devices bear the CE mark.

[edit] GTA01 FCC test report

FCC test report

[edit] GTA01 CE test report

CE test report

[edit] GTA01 NCC test report

For Taiwan Import usage:

NCC test report

Personal tools
display (top) side
component (back) side

Main components

Processor

The main Processor (CPU) of the Neo1973 is a Samsung S3C2410AL-26 (Capable of running up to 266 MHz)

Flash

64MB Samsung NAND flash (K9F1208U0B) attached to S3C2410 NAND controller.

This is the only flash memory in the device. The S3C2410 boots directly from nand, using the Steppingstone.

We only use free software, no proprietary flash file systems. For a full description of how it is used, see NAND_bad_blocks

RAM

128MB SDRAM (2x Samsung K4M511633C) attached to S3C2410 SDRAM controller

GSM/GPRS

The GSM/GPRS modem is Texas Instruments Calypso based.

CALYPSO digital baseband

Unfortunately we cannot provide many details on the GSM chipset due to very tight NDA's. However, this is not neccessarily required, since it interfaces using a standard UART serial line with the S3C2410. On that interface, GSM 07.05, 07.10 and other standardized protocols are used.

TWL3014 analog baseband

Product Homepage: http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12295&contentId=4703

TRF6151 RF Transceiver

Product Homepage: http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?templateId=6123&navigationId=12296&contentId=4701

AGPS

Hammerhead AGPS from Global Locate.

microSD-Card

The Neo1973 has one microSD aka Transflash slot.

LCD Display Module (LCM)

This is a 2.8" 480x640 toppoly (tpo) TD028TTEC1 module, using a Toshiba JBT6K74 TFT LCD Driver Chipset.

Touch Screen

Bluetooth

Delta DFBM-CS320 Class2 Module, using CSR BlueCore4

Vibrator

USB Host

The USB Host controller is inside the S3C2410

  • Driver: Stock Linux kernel ohci_hcd

USB Device

The USB Device controller is inside the S3C2410

Audio

Wolfson Codec

There's a WM8573 Wolfson Microelectronics Codec.

Analog wired Headset

There's a four-ring 2.5mm stereo jack which provides connectivity to old-fashined wired headsets.

The headsets used by Motorola smartphones (A780,A1200, ...) have a compatible configuration

Bluetooth Headset

This one is wired via PCM bus from the CSR Bluetooth chip to the Wolfson codec.

Power Management

A Philips PCF50606 is used for power management.

History

GTA01

This is the most simple, non-bluetooth version of the prototype.

GTA01v3

First generation of prototypes that was given to internal OpenMoko software developers.

Unfortunately not useful at all due to non-working touchscreen.

  • ATAG_REVISION: 0x0000130

GTA01v4

Second generation of prototypes that was given to Harald + Mickey.

Unfortunately still not useful due to half-working touchscreen.

  • ATAG_REVISION: 0x00000140

GTA01B

This is the bluetooth-enabled fork of GTA01

GTA01Bv2

This is the first produced version of the bluetooth-enabled version.

  • ATAG_REVISION: 0x00000220

GTA01Bv3

This is the second produced version of the bluetooth-enabled version. It contains mainly GPS-related fixes.

  • ATAG_REVISION: 0x00000230

This is the version that is shipped in Phase 0

GTA01Bv4

This is the version that is shipped in Phase 1

Distinguishing hardware revisions

Inside the Bootloader

Every hardware revision has its own u-boot image type. Thus, the bootloader has the revision hard-coded. The hardware revision is passed on to the kernel via the ATAG mechanism (ATAG_REVISION)

Inside the Kernel

The kernel receives the ATAG_REVISION during bootup, and saves its contents in the "system_rev" global variable.

From Userspace

The kernel exports the system_rev variable in /proc/cpuinfo as "Revision :" line.