RK3368 04/2017 True Octacore Firmware
UPDATED - Version 2.0 - March Update
AnTuTu Benchmark 6.3.3
Ever since I joined the scene here at Freaktab I've been focusing on chips and issues that don't get much attention from the crowd. Whether it's overclocking RK3066 gpu/ddr when nobody thought it was needed or possible, to unlocking and overclocking all eight cores on the RK3368 (and RK3288 hacks unreleased on Freaktab) I mostly do niche improvements/mods with a bent towards maximum performance without sacrificing stability.
With that said, here's a reminder of the purpose/focus of these true octacore firmware releases:
A recent conversation at CNXSoft on the topic of throttling, benchmarking and big.LITTLE architecture reminded me to continue my experiment into the possibility of enabling simultaneous processing among all eight cores of the RK3368. As implemented from stock, the RK3368 is really more like a quad core processor (tasks are grouped into one cluster of one or four cores at a time) with regards to multithreading and task scheduling.
The stock big.LITTLE implementation of the RK3368 cpu may be better suited for tablets and mobile devices.
This firmware decouples the CPU clusters from the voltage scaling and task scheduling design of the first gen big.LITTLE system implemented in the RK3368 and returns to plain old DVFS combined with GTS (global task scheduling). Basically, this allows all eight cores of the cpu to work at once - making it a 'true' octacore cpu. Frequency of all eight cores: 1608
TL;DR: All eight CPU cores are enabled simultaneously as 'big' cores at 1608mhz, instead of four big and four little.
With that said, here's a reminder of the purpose/focus of these true octacore firmware releases:
A recent conversation at CNXSoft on the topic of throttling, benchmarking and big.LITTLE architecture reminded me to continue my experiment into the possibility of enabling simultaneous processing among all eight cores of the RK3368. As implemented from stock, the RK3368 is really more like a quad core processor (tasks are grouped into one cluster of one or four cores at a time) with regards to multithreading and task scheduling.
The stock big.LITTLE implementation of the RK3368 cpu may be better suited for tablets and mobile devices.
This firmware decouples the CPU clusters from the voltage scaling and task scheduling design of the first gen big.LITTLE system implemented in the RK3368 and returns to plain old DVFS combined with GTS (global task scheduling). Basically, this allows all eight cores of the cpu to work at once - making it a 'true' octacore cpu. Frequency of all eight cores: 1608
TL;DR: All eight CPU cores are enabled simultaneously as 'big' cores at 1608mhz, instead of four big and four little.
- This is/was a personal project (I **really* dislike the RK implementation of big.LITTLE in TV boxes) but became even more so due to a lack of testers. Whatever is in the firmware and what the ROM does well is what suits my particular use case. Whatever isn't, doesn't.
- Widevine Level 3
- Latest Libs
- Overclocked CPU - ALL cores run at 1608 simultaneously. Unlike my previous firmware uploads, this overclock method is more logical in its implementation, thus more stable, as it's not 'fighting' against the big.LITTLE clusters in factory settings.
- Optimized emmc, vpu, gpu, ddr and all DVFS regulated components.
- Significantly lower vcore for better thermal performance and stability.
RK3368 supported crypto extensions (NEON, SHA1/SHA2, AES) ENABLED
DOWNLOAD-v1.0 Performance Enhancements
DOWNLOAD-v1.5 (added Gapps/Play Store, fixed issue with home/recent buttons for some users, added sleep/resume)
DOWNLOAD-v2.0* (Performance Enhancements, new video buffer config, latest drivers & libs, updated apps) - AP6255/6335 ONLY
DOWNLOAD-v2.0-March 2017 Update (Updated libs & apks, memory enhancements, BD-iso playback support, miscellaneous enhancements, fixed AP6335 BT)
*Version 2.0 uses an all new structure. Any changes to the partitions will break the firmware and result in a bootloop. Use only the images provided.
I want to experiment with true octacore hacks on my device. Can you make this for my device?
Post a link to the firmware that correctly runs your device so that I can compare the binaries and I'll probably do a version for your specific tv box. No guarantees.
Will my TV box explode or catch fire running all eight cores at 1608Mhz?
Probably not. I've been running these hacks (and more) for over 6 months, no fireworks yet. (Not even at 1752Mhz with a 4.5a power supply)
One final note. Some developers receive compensation - monetary, device, otherwise - from certain manufacturers to push/promote a particular brand's products and development agenda. Often, that involves access to a specific brand's private SDK, and private development timeline as well as utilities. This is not always fully disclosed. I do not, and have never, received any compensation in any form from any manufacturer, brand or website. All my contributions are my personal hobby, and for experimental purposes only.
Be mindful of individuals pushing specific brands/products through tacit/explicit endorsements of 'quality' driven mostly by personal/business interests. Please do not confuse volunteer hobbyists (such as myself and others) with said compensated brand agents.
Be mindful of individuals pushing specific brands/products through tacit/explicit endorsements of 'quality' driven mostly by personal/business interests. Please do not confuse volunteer hobbyists (such as myself and others) with said compensated brand agents.
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