The document compares CISC (x86) and RISC (ARM) architectures. CISC emphasizes complex instructions, large code sizes, and uses more transistors for complex instructions and storage. RISC emphasizes software, uses reduced instructions only, and has smaller code sizes. RISC has lower power and space requirements compared to CISC. The document also discusses various ARM-based system on chip (SoC) designs used in smartphones from companies like Qualcomm, Samsung, Huawei, Apple, MediaTek, and Intel. It provides examples of smartphone models using SoCs from these companies.

2. ARM vs X86
Complex Instruction Set ComputingReduced instruction Set Computing

3. Cont. ARM vs X86
CISC (x86) RISC(ARM)
Emphasis on hardware Emphasis on software
complex instructions
reduced instruction only
Small code sizes large code sizes
Transistors used for storing
complex instructions
Spends more transistors
on memory registers
High Power and space Low Power and space

4. SOC Market in Smartphone
HiSilicon Kirin

5. AnTuTu Report
• one of the most popular benchmarking apps

6. TEE
• ARM
– The family of TrustZone technologies can be
integrated into below cores of ARM :
• Cortex-A profile
• ARMv8-M (For Cortex-M Profile)
• Intel
– Intel SGX (Software Guard Extensions), A trusted
execution environment
• Mobile Skylake CPUs in 2015 (Skylake)
– Intel’s new smartphone strategy is to quit (2016)

7. List of ARM microarchitectures

8. Cortex-A (32bit)

9. Cortex-A (64 bit)

10. SOC based on ARM Cortex-A
Mobile Processors : here

11. Snapdragon SOC
Snapdragon
(Qualcomm)
Instruction set Microarchitecture
ARMv7-A Scorpion
Krait
ARMv8-A Kryo
Qualcomm
ARMv6
2007-2008
ARMv7-A
Cortex-A Scorpion Krait
ARMv8-A
Kryo Cortex-A

12. Finding Snapdragon Devices

13. Finding Snapdragon Devices

14. Exynos
• In 2010, Samsung launched Exynos 3 in
its Samsung Galaxy S mobile phone, which
featured a licensed ARM Cortex-A CPU.
Exynos
ARMv7
Cortex A7 Cortex A8 Cortex A9 Cortex A15 …
ARMv8
Cortex 32 … cORTEX73

15. Samsung Exynos Using Cortex-A

16. Samsung Exynos Devices
• For example:

17. HiSilicon Kirin SOC
• HiSilicon fully owned by Huawei and
purchased licenses from ARM Holdings.
Kirin
ARMv5 RMv7 ARMv8
2007-2009 2011-2016

18. HiSilicon Kirin SOC

19. HiSilicon Kirin Devices
• For Example:

20. SoC designed by Apple inc
• iPhone 4 : A4
– 32bit/Cortex A8/ARMv7-A 2010
• iPhone 4s :A5
– 32bit/Cortex A9/ARMv7-A2012
• iPhone 5: A6
– 32bit/Swift/ARMv7-A2012
• iPhone 5s : A7
– 64bit/Cyclone/ARMv8-A 2013
• iPhone 6 : A8
– 64bit/Typhoon/ARMv8-A-2014
• iPhone 6s : A9
– 64bit/Twister/ARMv8-A2015
• iPhone 7,7plus :A10
– 64bit/ Fusion /ARMv8-A2016

21. TrustZone in Apple
Family Architecture Feature
ARMv7-A Swift 2 cores. ARM /TrustZone
ARMv8 Cyclone 2 cores. ARM / TrustZone / AArch64
ARMv8 Typhoon 2 or 3 cores. ARM / TrustZone / AArch64
ARMv8 Twister 2 cores. ARM / TrustZone / AArch64
ARMv8 Fusion 2.34 GHz quad-core /Hurricane (2+2
Fusion)/TrustZone

22. MediaTek SOC
MediaTek
ARMv5 ARMv6
ARMv7-single
Core
ARMv7-Dual
Core
ARMv7-Quad
Core
ARMv7-Hexa
Core
ARMv7-Octa
Core
ARMv8-Quad
Core
ARMv8-Octa
Core
ARMv8-Deca
Core
20112007-2010 2012-2014 2012-2014 2014-2016

23. MT6735 Mobile devices
• For example:

24. Intel ATOM SOC
• Atom is a system on chip (SoC) platform
designed for smartphones and tablet
computers, launched by Intel in 2012.
Atom
Atom
Z2460
2012
….
Atom x7-
Z8700
2016

25. Atom SOC smartphones
• For example: