Breaking News
Design How-To

Fastboot technology for ultra small Intel Atom processor designs

10/5/2009 02:00 PM EDT
3 comments
NO RATINGS
Page 1 / 4 Next >
More Related Links
View Comments: Newest First | Oldest First | Threaded View
AndyGryc
User Rank
Rookie
re: Fastboot technology for ultra small Intel Atom processor designs
AndyGryc   10/6/2009 9:21:24 PM
NO RATINGS
No, they aren't testing RAM or Flash to acheive that speed. Testing the RAM isn't necessarily straightforward: RAM has a lot of different ways it can fail, and many of those only show up with certain addresses and certain bit combinations. A flash image can be tested reasonably robustly with a 32-bit CRC. All of those take a lot of time, though. If you're building an embedded device that can't receive firmware updates (not a PC that requires a BIOS), it won't matter if RAM or flash is corrupt, since the system has failed anyway. If its a system that requires guaranteed reliability, you can use dual flash images and a ROM, or voting technology or something else to ensure you boot properly even in face of failure. The point demonstrated though is that you can bring even a PC up super fast if you do the minimum necessary and avoid the BIOS.

Les Slater
User Rank
Rookie
re: Fastboot technology for ultra small Intel Atom processor designs
Les Slater   10/5/2009 5:21:44 PM
NO RATINGS
With 16MB of SYSTEM RAM and 800MB transfer rate, a pass would only take 21 ms. A few passes should suffice for a reasonable memory test.

Les Slater
User Rank
Rookie
re: Fastboot technology for ultra small Intel Atom processor designs
Les Slater   10/5/2009 4:40:10 PM
NO RATINGS
Watched the youtube video and noticed that one thing they left out to speed boot was memory test. Also the loading of OS image from FLASH, presumably via software previously loaded. Not checking memory bothers me. I thought about it for a while and concluded there would be a significant market for a northbridge chip that included a small amount of FLASH that could be DMA'd into system RAM. It could then be read back with some sufficiently robust checksum to RAM. This would also be Xored with FLASH to verify both RAM and FLASH integrity. The bit width of the FLASH could be sufficiently large to match the RAM speed. The amount of FLASH would not be prohibitive, it would just have to be process compatible. The economics of this would not be as clear if the northbridge became integrated into the processor die but still would merit consideration.

Flash Poll
Radio
LATEST ARCHIVED BROADCAST
EE Times editor Junko Yoshida grills two executives --Rick Walker, senior product marketing manager for IoT and home automation for CSR, and Jim Reich, CTO and co-founder at Palatehome.
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed