Hi,
On Tue, Mar 25, 2008 at 06:51:24PM -0400, joe@smittys.pointclark.net wrote:
I am having a problem getting coreboot->Linux initialize any high speed USB 2.0 devices like flash drives. The USB works fine on low
Flash drive? You mean mounting a USB thumb drive? That should work fine, I tested that on various coreboot boards. Or do you mean an external IDE/SATA drive which is connected via USB to the computer? I think both should work fine.
To really test USB 2.0 speeds you probably need something like a USB DVB-T card (for watching TV) or something similarly fast, I guess.
speed USB 1.1 devices like keyboards and mice. I don't think coreboot -> i82801xx_usb_ehci.c is initializing the device correctly. According to the Intel® 82801EB (ICH5), 82801ER (ICH5R), and 82801DB (ICH4) Enhanced Host Controller Interface (EHCI) Programmer?s Reference Manual (PRM) http://www.intel.com/design/chipsets/manuals/298656.htm there are a bunch of steps that the bios is responsible to set this device up. i82801xx_usb_ehci.c is not doing all of these steps. Is
Correct, none of the code in svn seems to do any special init for EHCI. Maybe it's just not required, maybe it _is_ required and nonbody tested high speed devices, not sure.
Note that AFAICT the USB ports _should_ be intialized ok with coreboot if the board code is ok, but they might only act as "full speed" (USB 1.1) devices.
anyone else using the i82801xx code having any problems with high speed USB 2.0 devices???
I have this board I could use to test, but it doesn't have EHCI (only USB 1.1 ports), so that won't help much, I'm afraid.
http://www.coreboot.org/ASUS_MEW-AM_Build_Tutorial
Maybe you can post a full boot log (coreboot + kernel + kernel command line options you used) with full debug levels enabled. Are there any hints in the log what the problem could be?
What exactly does _not_ work btw? Do the USB ports not work _at all_ or are they just "slow"? Which board is this? RM4100?
Uwe.