On 2012-04-10 13:19, Chris Tapp wrote:
On 10 Apr 2012, at 18:11, Gary Thomas wrote:
On 2012-04-10 11:03, Chris Tapp wrote:
I've been trying to get a BSP running under 6.0.1 using kernel 3.0.18 for an
ALIX 3D3 board. I've done this before under 4.0.1 using 2.6.34.
It's nearly working, but I can't get partitions on the CF card (which works
under 2.6.34) to show.
- The controller (CS5536) is showing as loaded in dmesg.
- hda is reported as using UDMA/33, but hda1 is not mentioned.
- /proc/partions does not show hda1.
- cat'ing /proc/ide/ide0/hda/model reports 'CF 1GB', which is what the CF is.
- The following kernel options are on : CONFIG_PCI, CONFIG_PCI_QUIRKS,
CONFIG_BLK_IDEPCI, CONFIG_IDEPCI_PCIBUS_ORDER, CONFIG_BLK_DEV_IDEDMA.
I suspect I've turned 'something' off in the kernel configuration that I need,
but it's not obvious (to me) what it could be. What's the best way of tracking
this down? I'll start again using a base .config file, but it takes a long time
to rebuild the kernel (I need a faster machine!) and it'll take a while to work
out what I've touched in error.
On a related note, I use SRCREV_machine_pn-linux-yocto_mybsp ?=
"d7e81e7f975c57c581ce13446adf023f95d9fd9f" in my kernel bbappend (base 3.0.18
kernel). If I do a 'cleanall' and then build I have to wait for the kernel to be
downloaded, even though I have a DL_DIR specified. Is it possible to stop this happening?
If not, is there a better way to rebuild the kernel and get a new image in deploy/install?
Do you have CONFIG_HOTPLUG=y?
Yes, that's set. However, CONFIG_HOTPLUG_PCI isn't.
Do I need hotplug? The CF card is the boot media (currently booting from USB
while getting this fixed) and is present when the system starts.
I think so, yes, that's [part of] the machinery the kernel uses to find
and create devices, etc.
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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