r32190
Junior Member
Posts: 57
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Post by r32190 on Mar 24, 2009 21:39:56 GMT 7
Serial console is a very low level application, no complicated protocol stack as Ethernet or USB. If it doesn't show up anything, that means something real bad happened. A brand new N1200 at HK is less than USD$100. I saw a month old 2nd N1200 is about additional 10% less. hk.f1.page.auctions.yahoo.com/hk/auction/1118199987I suggest you buy a new one or a 2nd hand.
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r32190
Junior Member
Posts: 57
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Post by r32190 on Mar 24, 2009 9:33:03 GMT 7
rtorrent has been used for a while, it is not new.
I am using firmware version 1.0.07.2. I haven't upgrade for 1.5 yrs. Frankly, I haven't compared the difference between ctorrent and rtorrent. No offense, just want to highlight the fact.
The bin is located /opt/bin/rtorrent. "ps" also indicates rtorrent is running.
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r32190
Junior Member
Posts: 57
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Post by r32190 on Mar 10, 2009 9:28:06 GMT 7
You should check the system temperature. It is located at /var/tmp/temperature. Mine is 44. But I wonder how frequent it will update. BTW, if the fan is dead, the N1200 suppose will beep every half an hr. I found that because the replacement is 2 pin fan. A 3 pin fan will provide rpm value and makes N1200 happy again without beeping.
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r32190
Junior Member
Posts: 57
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Post by r32190 on Mar 10, 2009 8:50:47 GMT 7
You can mount the USB drive or eSATA drive to the USBCOPY folder. e.g. mount /dev/sdb1 /raid/USBCopy
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r32190
Junior Member
Posts: 57
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Post by r32190 on Mar 10, 2009 8:48:04 GMT 7
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r32190
Junior Member
Posts: 57
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Post by r32190 on Mar 9, 2009 22:15:10 GMT 7
Are you sure there is no serial ? I'm wondering you screw up the CSB freq. You may try other baud rate to see. The serial clock is tied up to the CSB. If it is not too fast to hang up the ram, you can still run u-boot. The command listed at the miTX UM is good enough for you to overclock. If you really have the budget, just list down exactly what have you done last time, otherwise, the N1200 would crashed again.
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r32190
Junior Member
Posts: 57
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Post by r32190 on Mar 9, 2009 21:59:15 GMT 7
The CSB (internal bus) runs at 266MHz. The granularity of the CPU PLL is 0.5 times in step. Therefore, the next frequency is 266 x 1.5 = 400MHz. You may try 533MHz, but I suggest you need high rpm fan 1st !!
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r32190
Junior Member
Posts: 57
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Post by r32190 on Dec 4, 2008 20:14:57 GMT 7
Oh, missing something. The 8349-miTX-XXXX Linux version is too latest. You should rewind to use the 8349-mds-XXXX BSP to fit the Linux version of N1200.
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r32190
Junior Member
Posts: 57
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Post by r32190 on Dec 4, 2008 20:07:46 GMT 7
My heatsink is 11~12mm high, I guess 13 mm would be better. I use the conductive paste to fill the gap between heatsink and the case. I don't re-flash the N1200. My opinion of using OpenWRT is unleashing the hidden features of the box, such as the USB port for non memory device. I have a ASUS WL-HDD reflashed with OpenWRT, I can hook up a USB webcam, but I lost the GUI.
After you installed the 8349 BSP, you can cross-compile any small utilites such as full boom busybox or no-ip client, or even some device drivers. I don't see any big advantage to reflash it. You may also build the native compiler inside the box, and some utilties that prohibited at cross-compilation may get compiled.
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r32190
Junior Member
Posts: 57
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Post by r32190 on Dec 4, 2008 10:16:11 GMT 7
I suppose the HRCW is at FE000000. Check it by md FE000000. HRCW repeat the 8 bit 8 times (my apology, not 4 times). Start from FE000008, it should be 02020202. Your should modify to 23.
Check whether 10000000 is RAM or not. mm 1000000 with arbitrary value as "deadbeef". md 1000000 to confirm.
If flash and RAM behave what I said, do it as the UG printed. But before cp.b, check the RAM content 1st. md 10000000, for value 23020202 written or not.
Don't worry, your N1200 will not brick for wrong core freq in short period of time.
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r32190
Junior Member
Posts: 57
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Post by r32190 on Dec 3, 2008 21:44:50 GMT 7
WAIT !! That is an example, not your real setting. The board is an evaluation board called 8349-mITX. It core freq is 533Mhz. Your box is N1200, the core freq is 266MHz. My N1200 is deep inside my storage room, I don't want to hook up the serial port.
1st of all, check where is the flash, may check FE000000. Then check where is the HRCW. Since the flash should be organized by a 8 bit device, so you may note that same 8 bit would repeat 4 times at a 32 bit boundary. CCB is 266MHz, then CORE/CCB=1:1. So the 8 bit word is 02 (23 at this example). You need to change it to 23.
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r32190
Junior Member
Posts: 57
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Post by r32190 on Dec 3, 2008 16:05:13 GMT 7
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r32190
Junior Member
Posts: 57
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Post by r32190 on Dec 3, 2008 14:14:55 GMT 7
You can go to www.freescale.com and download the mpc8349 BSP. There are several BSPs, pick the mpc8349e-mitx-20070221.iso, would be good enough. Loop mount (or by Win Daemon) and read the BSP UG under the doc folder. There are example to modify the core freq under u-boot. Have fun and good luck. Once, as I posted before, the original heatsink sucks. You may refer to my previous post to improve the heat dissipation of the CPU.
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r32190
Junior Member
Posts: 57
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Post by r32190 on May 15, 2008 16:21:47 GMT 7
8347 is in plastic package. Its dervative 8349 is in metal package, can run up to 667MHz. Theortically, you can overclock it to 533 or 667MHz, but very good cooling methodology is required. Factory default (non-conductive adhesive) will definitely harm the CPU.
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r32190
Junior Member
Posts: 57
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Post by r32190 on Mar 28, 2008 12:29:51 GMT 7
It has been a while. You are correct, 0xFE00_0000 to 0xFE01FFFF is the HRCW. Actually, the value would be stored to the CPU is 32 bit wide, but in order to simply the decoding, 128KB is reserved. The best way to program HRCW is to reserve a 128KB area at the DDR, make sure nobody else is using it and copy back to the flash. Type "help" at u-boot prompt will show available instructions.
I highly recommend you improve the ventilation and the heatsink 1st. I posted two threads about it. Now my overclocked N1200 is very stable, continuous 58 days operating now.
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