RockChip mp3/mp4 players

[knob]

This player uses the ZSP400 instruction set I understand, here is the full technical manual,
http://www.mympxplayer.org/technical-manual-on-coding-rock-games-utils-df930.html

along with a Beta Disassembler and Assembler,
http://www.file-upload.net/download-1140530/RKP-Disassembler_and_Assembler_v01.zip.html

[dragongod]

It's wonderful if Rockbox can run on RK chips.
But people said the RK27 chips are different with RK26, and there is no RK27 datasheet or anything else. Maybe it's more difficult to process the Rockbox on RK27...

[Cabewse]

Yes, the RK27 chips are very different. I beleive they are ARM7 200Mhz + Rockchip DSP 200Mhz.

I couldn't find the datasheet, but here's a schematic.
http://www.mympxplayer.org/rockchip-rk27xx-schematic-df905.html

Here's the description from the rockchip site:
Portable Media player solution
Hight performance ARM and DSP dual core processer
Embed 8-bits hardware ECC, support full line Nand Flash
TFT controller, support 26000 color and MCU/RGB panel
USB high speed controller, up to 4MB write speed
Embed high performance audio CODEC, HI-FI quality sound
Support SD/SDHC/MMC flash card
All video format supported, include
AVI,RM,RMVB,WMV,ASF,FLV,DAT,MPG,MP4,VOB,3GP，solution up to 800*480
JPEG, BMP, GIF decoder, support thumbnail, zoom, rotate, and slideshow display
Media library manager, sorted by ID3 and fast seach
Support 8/16 bits game simulator
Support TV output
Ebook reader, support slideshow and bookmark function
Multi language support, multi font display
MiniOS and GUI system, support aplha picture, fade functions
LQFP128 package

[dragongod]

we've done some research on one RK27 OF, we can dispack the OF and get files out. Most of them are media sources such as BMPs,fonts,etc. nothing looks like main process, or maybe main process is made into the chip?

I always think the only thing we can done with RK27 is change its HMI or develop some small apps. And I think that run ROCKBOX may be a mission-impossible. so, it's really wonderful if the ROCKBOX can run on RK chips. 

[bigjooe]

Hello!
I'm new here. Today I found on mympxplayer.org Rockchip Developer Package. There is firmware source to RK27xx i think (im not sure). Maybe there is any way to make rockbox on it?
Here is link to topic and next 2 linx to package:
http://mympxplayer.org/3-vt12634.html?postdays=0&postorder=asc&&start=30
http://www.mediafire.com/download.php?2n2jftgfjvk
http://www.mediafire.com/download.php?mzyzzrwwcw2
Rockchip RK27xx have players like pentagram eon cineo, vedia c6, ramos rm970 etc.
I can't do anything with it because i'm not good in c programming. But maybe your better than me?
 

[Giova]

Hello, I've found some info for RK270x players on this page:
http://alemaxx.al.funpic.de/rk27/rkwfwpatch.html

[alfchin]

RK26XX differs from RK27XX on its ARM Core
RK26XX is just a DSP,while RK27xx has its own ARM core
In China,most manufactories use a set of hardware and firmware provided from rockchip or some other companies,and what they had done to the players is just modifying the UI.Maybe that's the reason why the toolkit can only find rsc files.Only some large manufactories ,like OPPO,have the SDK to modify the FW,and build in new functions.So I don't think you can get the source of FW,which is named MINI OS

[tp11]

RK2706 datasheet can be found from this thread:

http://mympx.org/forum/general-discussion/43348-hooray-rockchip-sdk-36.html

Direct link:

http://www.megaupload.com/?d=FQQJJ7FV

[bor_ka]

It appears that there is partial datasheet for the RK28xx. http://drop.io/lylxuug/asset/rk28xx-datasheet-v0-2-pdf

RB for the Teclast T51?

[yzflcyq]

RockChip 27xx SDK is aviliable here：http://u.115.com/file/f9f67c7f48

[dedero]

Hello guys,

I could get RK28xx datasheet, probably it will be useful.

http://www.megaupload.com/?d=3XDDC0DS

I'm waiting a rockbox for S:flo2, I'm able to pay for it!!!! 

[wodz]

Glancing at rk28xx pdf they changed very little from rk27xx - mainly the ARM core has been upgraded from ARM7EJS to ARM926EJS.

After lecture of rk27xx pdf and various internet sources I am preparing to fiddle with my cheap rk2705 based DAP. I think I understand how to configure clocks, cache controller and memory controller. Now I am studying how the boot process proceeds.

[knob]

As of r30459 it is possible to compile and run main rockbox binary, codecs and a few test plugins.

 -- MarcinBukat - 07 Jun 2011

I know this port is still in early stages yet.

But I can to do some testing for the Rk27xx port.
I have a couple of rk27xx players I can experiment with, not worried about bricking as I have some tools and recovery firmwares ready.

I have already installed virtualbox, the Unbuntu configured environment and downloaded Rockbox source from svn.

If I add my player's lcd config in the source, disable the plug-ins and just compile the rest, can I install Rockbox now using rk27load?

[wodz]

You can upload it to the device, yes. You cannot install it permanently as I haven't written proper bootloader code yet.

I guess it is not coincidence that you have  the same nickname as one of the guys hacking rk27xx OF :-)

[knob]

:-)

Well.. I've built the tools and the main binary now.

cela@cela-desktop:~$ sudo ./rkusbtool -d
[sudo] password for cela:
rkusbtool v0.1
(C) Marcin Bukat 2011
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Switching into rk DFU mode...

cela@cela-desktop:~/READY$ sudo ./rk27load -e1 -e2 -s1 stage1.bin -s2 stage2.bin -s3 rockbox.rk27
rk27load v0.2
(C) Marcin Bukat 2011
Based on rk27load ver. 0.1 written by AleMaxx (alemaxx at hotmail.de)

This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[info]: Initializing device... done
[stage1]: Loading 500 bytes (stage1.bin) of code... done
[stage1]: Encoding 500 bytes of data ... done
[stage1]: codesize = 500 (0x1f4)
[stage1]: Calculating checksum... 0xd314
[stage1]: Uploading code (502 bytes)... done
[stage1]: Loading 928 bytes (stage2.bin) of code... done
[stage2]: Encoding 1022 bytes data... done
[stage2]: Calculating checksum... 0x9dea
[stage2]: Uploading code (1024 bytes)...
[error]: Code upload request failed (ret=-7)
[error]: Error -24
stage1.bincela@cela-desktop:~/READY$

Got an error uploading stage2, maybe i have an issue with libusb, need to find out what that error code is about.