Intel MPCMM0001 manual RAM Constraints, Flash Memory Map, RAM-Disk Storage Locations

Application Hosting

22.3.1.2Flash Memory Map

	Below is the list of images on CMM flash with flash address ranges and the size of the images.
Table 91.	Flash #1
	Image Name	Flash Address Range	Image Size
	Backup RedBoot image	0xF0000000 - 0xF003FFFF	256KB
	RedBoot image	0xF0040000 - 0xF007FFFF	256KB
	FPGA image	0xF0080000 - 0xF00BFFFF	256KB
	Backup FPGA image	0xF00C0000 - 0xF00FFFFF	256 KB
	OS image	0xF0100000 - 0xF0FFFFFF	153060KB
Table 92.	Flash #2
	Image Name	Flash Address Range	Image Size
	OS image	0xF1000000 - 0xF1FFFFFF	16MB
Table 93.	Flash #3
	Image Name	Flash Address Range	Image Size
	FFS2 (/home partition)	0xF2000000 - 0xF2FFFFFF	16MB

Table 94. Flash #4

Image Name	Flash Address Range	Image Size
FFS (/etc partition)	0xF3000000 - 0xF37FFFFF	8MB
Reserved	0xF3800000 - 0xF3FBFFFF	8MB – 256KB
Configuration area	0xF3FC0000 – 0xF3FDFFFF	128KB
FIS directory	0xF3FE0000 - 0xF3FFFFFF	128KB

22.3.1.3RAM-Disk Storage Locations

Caution: Files in this location are stored in RAM and will be lost during CMM reboots.

Due to the constraints of writing to flash memory, larger file operations such as decompressing an archive should be performed on RAM-disk in the following directory:

/usr/local/cmm/temp - Useful for storing temporary files. Applications should make a subdirectory for use with their temporary files. Do not add more than 5 MBytes to this location.

22.3.2RAM Constraints

Up to 32 MBytes of RAM are available for user applications. RAM usage at runtime, on average, should not exceed this quantity.

202MPCMM0001 Chassis Management Module Software Technical Product Specification