Difference between revisions of "NOR"

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==Hardware==
 
==Hardware==
* [[M68ap|iPhone]] -- some CFI compliant parallel NOR
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* [[M68AP|iPhone]] -- some CFI compliant parallel NOR
* [[N82ap|iPhone 3G]] -- 1MB SPI NOR flash
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* [[N82AP|iPhone 3G]] -- 1MB SPI NOR flash
* [[N18ap|iPod touch 3G]] and beyond -- The NOR is replaced with a dedicated partition of [[NAND]]
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* [[N18AP|iPod touch 3G]] and beyond -- The NOR is replaced with a dedicated partition of [[NAND]]

Revision as of 07:49, 8 October 2015

NOR typically refers to the NOR flash chip the application processor boots from. The baseband also uses a NOR flash. (See Wikipedia's article about flash memory for background on NOR flash in general.)

How to Access

This can be accessed using a patched iBoot or a kernel hack. It can possibly be dumped using /dev/kmem

Memory Map

Offset
Description
0x0
Configuration Data

0x0: "2GMI" fourcc
0x4: Block Size (0x40)
0x8: Images Section Location Offset
0xC: Images Section Location (In blocks)
0x10: Images Section Length

0x30: Checksum of this config data
0x4000
SysCfg Section
0x8000
Images Section
0xFC000
NVRAM Section (Note: This copy is the one iBoot uses)
0xFE000
NVRAM Section (copy)

Hardware