From The Apple Wiki
The A6 chip.

The S5L8950 is the Apple A6 processor currently used in the iPhone 5 and iPhone 5c.

The processor supposedly uses custom Apple silicon.

The software architecture as reported by "hostinfo" is: armv7s.


The A6 is a 32-bit processor with part number is APL0598. It is produced by Samsung with its low power 32nm CMOS process. The die has an area of 95mm². It incorporates a three core PowerVR SGX543MP3 GPU clocked at 266MHz.


The chip contains Bootrom 1145.3. It runs ARM based instructions with the CPU Instruction set ARMv7s. The exact ARM reference has to be determined yet.

iBoot load address is 0x80000000, framebuffer for n41ap begins at 0xBF7AA000.

Device Tree Dump Information[edit]

Mach kernel version:
	 Darwin Kernel Version 13.0.0: Sun Aug 19 00:31:06 PDT 2012; root:xnu-2107.2.33~4/RELEASE_ARM_S5L8950X
Kernel configured for up to 2 processors.
2 processors are physically available.
2 processors are logically available.
Processor type: armv7s (arm v7s)
Processors active: 0 1
Primary memory available: 1015.66 megabytes
Default processor set: 65 tasks, 503 threads, 2 processors
Load average: 2.56, Mach factor: 0.44

Boot Chain[edit]

Bootrom->LLB->iBoot->Kernel->System Software

Bootrom Exploits[edit]