Re: Compact Flash (CF) boot question

Bob wrote:

Emanoil Kotsev wrote:
Hello,

I have a fanless board by Acrosser with Geode GX CPU. The board has a CF
slot that is seen as primary/secondary HDD in Bios. I've jumpered to
primary as I don't have a HDD attached. The card is a CF card (hda: ELITE
PRO CF CARD 4GB, ATA DISK drive).
Now the problem is that the system can not boot from this card. Can
someone tell me how to debug, please.
I'm thinking that may be the bios is not supporting such a big CF card.

The other think is that when I boot from USB or other drive I have this
following error couple of times after that the CF card is mounted:

Uniform Multi-Platform E-IDE driver
cs5535 0000:00:0f.2: IDE controller (0x100b:0x002d rev 0x00)
cs5535 0000:00:0f.2: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xff00-0xff07
Probing IDE interface ide0...
hda: ELITE PRO CF CARD 4GB, ATA DISK drive
hda: host max PIO4 wanted PIO255(auto-tune) selected PIO2
hda: host side 80-wire cable detection failed, limiting max speed to
UDMA33 hda: UDMA/33 mode selected
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hda: max request size: 128KiB
hda: 7831152 sectors (4009 MB) w/1KiB Cache, CHS=7769/16/63
hda:<4>hda: dma_timer_expiry: dma status == 0x21
hda: DMA timeout error
hda: dma timeout error: status=0x58 { DriveReady SeekComplete DataRequest
} ide: failed opcode was: unknown
hda: DMA disabled
ide0: reset: success
hda1 hda2 hda3

There was an option to pass CHS on the command line at boot time, but I'm
not quite sure what the root cause is. I'm using kernel 2.6.26.2 or
2.6.27.6, but same behaviour with both except that with 2.6.27 I can not
boot some times (it hangs after reading the intrd file).

Thank you in advance

regards


Mmm I've done CF boot a few times but not recently, I seem to remember
that some (most) CF cards or CF->IDE adapters don't play well with DMA.

Try putting it in PIO mode in BIOS and there'll be a boot parameter like
ide=nodma you can pass to lock the kernel to PIO but how would depend on
which boot loader you're using.

Sorry I can't be more help, Good luck

Thanks a lot, precious help, I went to BIOS -> Peripherals -> IDE and
disabled DMA.
The CF disk boots now. My kernel still hangs after loading initrd from time
to time.
Do you know how I can debug this. It happens more often with 2.6.27 and not
that often with 2.6.26

regards


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