Originally Posted by http://www.neogaf.com/forum/showpost.php?p=52485990&postcount=41
RE: onQ123 post. Wait, that's what you were postulating on Beyond 3D? Cause that makes zero sense. GNB is just a term AMD uses for the way they integrate the GPU and memory controller in their APU designs. It has nothing to do with a potential Arm core in the south bridge for housekeeping in low power states. And an off chip south bridge is a terrible place to lock up a bunch of shaders.
We can already guess the weak APU was the 4 core bulldozer based chip used in the early departure kits. We know the final ps4 specs. Your crusade to discover hidden compute resources is pointless.
Yeah the off chip southbridge sorta kills the AMD stock GNB all in one idea (Potted MCM still likely though). If you look at ARM Trustzone and assume the second custom chip has ARM trustzone and also all the low power support for multiple planned background services as well as something like Google TV then this differs from the AMD stock APU design goals and would require something different from AMD's GNB (which is where AMD would put Trustzone and likely why everything IO is in UNB and AMD Kabini is the first SoC with IO in the SoC, First SoC with third party IP (Trustzone and more)).
includes all IO and the UI, anything that can be intercepted by malware to get bank pin numbers or intercept pay TV or IPTV streams. I assume the PS4 will have a GPU accelerated UI which requires a ARM GPU and if the PS4 is to support a 4K UI then it needs a Mali 600 series GPU which has compute 1.1 support
. Example: The UI is used by Trustzone applications to display an Icon (See Lock and Green check mark in picture below) that assures the user that entering a PIN number is via a secure system. If UI were not part of Trustzone then Malware could mimic this Icon even though the system is not secure, you need a secure UI so that the ICON can be trusted.
There are multiple voluntary and required power modes for Game Consoles.
Idle Menu Less than 35 watts
As soon as you fire up the AMD APU everything on, Idle power would exceed this due to GPU and GDDR5 memory. Keep the GPU in Zero power mode (5 Watts) + GDDR5 memory you are at 25 + watts. The PS3 XMB is XML using GPU accelerated OpenVG and the PS4 is supposed to support a 4K UI, I would think it would need GPU acceleration and we are back to more than 35 watts.
The only way this works is with APU + GPU where a 2-4 CU GPU is on while the second GPU is in Zero power mode. When Sony announced only 1 GPU and GDDR5 memory all assumptions that this mode could be accomplished with AMD hardware vanished, (and I freaked, my assumption was APU + GPU with stacked DRAM for low power) something else must be used for low power and OS UI. ARM could do 4K UI with GPU acceleration for about 5+ watts total if it had it's own memory.
AMD recommended APU + GPU till 2014 for two reasons 1) Context switching between GPU and Compute work loads and 2) Idle power mode. With the inclusion of ARM Trustzone, UI and IP Streaming can be done with ARM and the large GPU in a single APU not APU + GPU design can sleep.
There are EU power regulations for Always on Standby mode with exceptions for "special features"
. Standby is 500mw but special exceptions are allowed and I have not been able to find the power that is authorized. It applies to the PS4 and Xbox 720. The always on mode for the Xbox and PS4 is not required to be 500mw, read the exceptions and use cases. One has a game console able to turn on a Blu-ray player and control as well as play the blu-ray in the player; RVU should allow such a use case.
Cerny did state that the CPU in the second chip "so called Southbridge" is there to handle background tasks because of restrictive EU power regulations. Southbridge is on and the APU is mostly turned off, that should include the GDDR5 controller and memory. This depends on what the EU regulations will allow as well as GPU and GDDR5 standby power requirements.
The low standby power assumption
is that the hard disk is sleeping, GDDR5 and APU off. Instant on & Instant start of gameplay would be a snapshot roll-in of X86 register information and GDDR5 Memory data from Flash. Waking up a hard disk and decompressing and decrypting a file to be used to snapshot rollin to X86 from a (assumption) ARM controlled hard disk should be slower than from Flash. This also requires that the ARM CPU has it's own LP memory. Southbridge would essentially be a ARM SoC supporting a 500mw standby and 2-5 watt background mode and XTV/RVU/DVR.
Higher power standby mode:
(Nearly instant on and game play restart) Even if the GCN GPU does have a 3 Watt standby mode and GDDR5 is in the same range (Memory and GPU registers need to maintain their data) for a total of 5 watts in addition to the ARM (less than 500mw), it will be an always on 5+ watts which does not makes sense and will probably not be allowed. Best from a always on power view, though more complicated, is the first case above.
PS3 hypervisor, one SPU used and encryption/decription to hard disk of the PS3 kernel matches some of the Trustzone features. Trustzone is used with IO so it being in the Southbridge close to IO and Hard disk is the place it should be located. Second, Trustzone is ARM code only but it can manage another ISA family boot and function as a move engine.
ARM Trustzone in Game consoles Likely
ARM is famous for its low-power chip designs, Gemalto is known for its NFC security features, and Giesecke & Devrient brings some nice nano-SIM notoriety to the table. As a trio, these companies want to push forward a security standard that could be readily used in a wide range of web-connected devices, including tablets, smart TVs, game consoles and smartphones. The standard itself is built on ARM's TrustZone hardware-based security, which has been around for a while and is built into every ARM Cortex-A series processor,
FCC to Force all Cable TV Providers to Stream HD With "Open" Standard by 2014
Was supposed to go into effect Dec 2012 but was delayed by TiVo.
Originally Posted by http://www.xbitlabs.com/news/mobile/display/20121218221526_ARM_G_D_and_Industry_Players_Develop_Trusted_Execution_Envir onment_for_Mobile_Devices.html
A Trusted Execution Environment (TEE) is a secure area that resides in the application processor of an electronic device. Separated by hardware from the main operating system, a TEE ensures the secure storage and processing of sensitive data and trusted applications. It protects the integrity and confidentiality of key resources, such as the user interface and service provider assets. A TEE manages and executes trusted applications built in by device makers as well as trusted applications installed as people demand them. Trusted applications running in a TEE have access to the full power of a device's main processor and memory, while hardware isolation protects these from user installed apps running in a main operating system. Software and cryptographic isolation inside the TEE protect the trusted applications contained within from each other. Device and chip makers use TEEs to build platforms that have trust built in from the start, while service and content providers rely on integral trust to start launching innovative services and new business opportunities.
“Trustonic will accelerate the adoption and widespread use of ARM TrustZone technology in a diverse set of trusted enterprise, commerce and entertainment services by delivering a Trusted Execution Environment to the broad ARM ecosystem," said Warren East, chief executive officer of ARM.
Numerous companies, including 20th Century Fox Home Entertainment, Cisco, Discretix, Good Technology, Inside Secure, Irdeto, MasterCard, Nvidia, Samsung Electronics, Sprint, Symantec, and Wave Systems, plan to work with Trustonic and adopt the TEE.
Looks like the RVU additions to DLNA recently adopted are the standard.
The U.S. Federal Communications Commission -- upset that cable television providers (CTPs) did not allow streaming of HD video via secured connections like the Digital Living Network Alliance (DLNA) standard -- in 2010 decided to force the issue proposing an order to force CTPs to stream.
The new set of rules, set to be made mandatory by June 2, 2014, also clarifies what capabilities are expected of the HD streams:
recordable high-definition video
closed captioning data
remote control command pass-through
DLNA Premium Video Profile, an HD-compliant version of the secure-streaming standard set to be ratified in 2013, was suggested as one possible option for cable companies.
Xtended TV is coming to OTA with ATSC 2.0 in the US this year and those standards should make their way into cable.
So DVR ability with an always on Xbox 720 or PS4 is a given right?
Broadcasters are going to insist the platforms be secure and most new Set Top Boxes are including ARM Trustzone.
This is the hook, the reason an always on game console can command the living room.
But there is going to be competition from cheap ARM powered Google TV STBs so easier to use, more powerful, more features than the cheaper ARM platforms starting with camera and Skype included.
Well actually, in addition to the Cable Box Gateway device the home network can have DLNA media servers. Every RVU device that can access the Cable Gateway can access the DLNA Media server and likely the DVR in the PS4 and Xbox 720. For a Fee, the PS4 likely will find the commercial media (music, pictures and video) on the home network and index them for you (with cover art). Family Movies and pictures will likely be indexed for free and will allow Picasa like searches by face or scene detect. Lots of cloud services for both Microsoft and Sony to offer for a tiered fee schedule.