bridgeOS - Misplaced Pages

Embedded operating system by Apple Inc.

Operating system

bridgeOS
Support status
Developer	Apple Inc.
Written in	C C++ Objective-C Swift assembly language
OS family	Unix-like, iOS
Working state	Current
Source model	Closed, with open-source components
Initial release	October 27, 2016; 8 years ago (2016-10-27)
Update method	FOTA (via Mac running macOS)
Platforms	T series (2016 MacBook Pro and later)
License	Proprietary software except for open-source components
Supported

bridgeOS is an embedded operating system created and developed by Apple Inc. for use exclusively with its hardware. bridgeOS runs on the T series Apple silicon processors and operates devices such as the OLED touchscreen strip called the "Touch Bar", TouchID fingerprint sensor, SSD encryption, and cooling fans.

At boot time, the bootloader executes the bridgeOS kernel, then the bridgeOS kernel passes off to the UEFI firmware.

bridgeOS is based on Apple's watchOS.

References

"10.15.4 Supplemental Update Bricking Small Number of T2 Macs". Mr. Macintosh. April 17, 2020. Retrieved August 18, 2020.
Davidov, Mikhail; Erickson, Jeremy (2019). "Inside The Apple T2" (PDF). blackhat.com.
Misha Davidov (November 20, 2018). "Secure Boot in the Era of the T2". duo.com.
Lianying Zhao; He Shuang; Shengjie Xu; Wei Huang; Rongzhen Cui; Pushkar Bettadpur; David Lie. "A Survey of Hardware Improvements to Secure Program Execution" (PDF). ACM Computing Surveys. 56 (12): 1–37. doi:10.1145/3672392.
Snell, Jason; Macworld | (July 8, 2020). "The switch to Apple silicon: Will the Touch Bar survive?". Macworld. Retrieved August 18, 2020.
"TinkerTool System 7, Reference Manual" (PDF). Marcel Bresink Software-Systeme (MBS). August 22, 2023.
Frazelle, Jessie (February 4, 2020). "Securing the Boot Process: The hardware root of trust". Queue. 17 (6): –60:5–Pages 60:21. doi:10.1145/3380774.3382016. ISSN 1542-7730. Retrieved January 14, 2024.
Pepijn Bruienne (May 2, 2018). "Apple iMac Pro and Secure Storage". duo.com.

Operating systems by Apple

Apple II, III, Lisa

Mac

Classic Mac OS	System 1 Systems 2, 3, and 4 System 5 System 6 System 7 Mac OS 8 Mac OS 9
macOS	History NeXTSTEP OpenStep Rhapsody Public Beta Core Darwin XNU Desktop Mac OS X Public Beta 10.0 (Cheetah) 10.1 (Puma) 10.2 Jaguar 10.3 Panther 10.4 Tiger 10.5 Leopard 10.6 Snow Leopard 10.7 Lion OS X 10.8 Mountain Lion 10.9 Mavericks 10.10 Yosemite 10.11 El Capitan macOS 10.12 Sierra 10.13 High Sierra 10.14 Mojave 10.15 Catalina 11 Big Sur 12 Monterey 13 Ventura 14 Sonoma 15 Sequoia Server Mac OS X Server 1.0
Other projects	Shipped A/ROSE A/UX AIX for Apple Network Servers MAE MkLinux PowerOpen Environment Cancelled Star Trek Taligent Copland Nukernel Vanguard

iOS derivatives

iOS	iPhone OS 1 2 3 iOS 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
iPadOS	13 14 15 16 17 18
Others	tvOS Apple TV Software visionOS watchOS audioOS bridgeOS

Others

List •

Category

Darwin-derived operating systems

1
2
3
Forks from iOS with 4

iOS

iPhone OS
- 1
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- 3
iOS
- 4
- 5
- 6
- 7
- 8
- 9
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- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18

tvOS

TV Software
- 4
- 5
- 6
- 7
tvOS
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18

audioOS	13.4 14 15 16 17 18

watchOS

bridgeOS	1 2

audioOS

11
12
13
Forks from tvOS with 13.4

iPadOS

visionOS	1 2

Non-Apple
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macOS version history
Mac OS X Server version history
tvOS version history
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iPadOS version history
watchOS version history
audioOS version history
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Former	Mike Markkula (Chairman) John Sculley (Chairman) Steve Jobs (Chairman) Gil Amelio Fred D. Anderson Bill Campbell Mickey Drexler Al Eisenstat Larry Ellison Al Gore Robert A. Iger Delano Lewis Arthur Rock Eric Schmidt Michael Scott Michael Spindler Edgar S. Woolard Jr. Jerry York

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