Quoting Carl-Daniel Hailfinger <[EMAIL PROTECTED]>: > On 22.02.2008 21:03, [EMAIL PROTECTED] wrote: >> Quoting [EMAIL PROTECTED]: >> >> >>> Quoting ron minnich <[EMAIL PROTECTED]>: >>> >>> >>>> On Fri, Feb 22, 2008 at 9:15 AM, <[EMAIL PROTECTED]> wrote: >>>> >>>>> It is the Intel 82801DB ICH4 chipset. I think most of the ICH's are >>>>> the same on this. So are you saying this can be set in filo, or >>>>> coreboot? >>>>> >>>> I think coreboot has to do it ... if the kernel can not. >>>> >>>> ron >>>> >>>> >>> Ok then, I think it may complicate things too much if we had a >>> IDENTIFY_DRIVE command query to the drive (Note: this command query is >>> also used for DMA settings). That would be like basicly re-writing an >>> IDE driver?? >>> >>> >> After some futher reading, I don't know if this would even be >> possible with coreboot. It would have to be done with filo (file >> does this command query anyways and prints out the drive model >> number) when the drives are fully initialized. Looks like senerio >> number two... >> >>> So, I propose a global option (IDE_CABLE = 40 or 80) that can easily >>> be adjusted from Config.lb in the targets directory, that sets the >>> value for a simple function in >>> src/southbridge/intel/i82801xx/i82801xx_ide.c. >>> Does that make sense? >>> >>> >> If there are no objections I will submit a patch. What coreboot >> system files need to be modified for a global option? >> > > Can you please check with the Linux IDE guys? The matter is horribly > complicated because you have to check whether the 80-wire cable was > detected by the controller and check the same for the drive. > [EMAIL PROTECTED] is the address you want to write to and the > experts there can tell you exactly what the BIOS is expected to do. > > Regards, > Carl-Daniel > OK, but amazingly intel was nice enough to provide this doc:
http://www.intel.com/design/chipsets/manuals/298600.htm Intel® 82801EB (ICH5), 82801ER (ICH5R), 82801DB (ICH4), 82801CA (ICH3), 82801BA (ICH2), 82801AA (ICH), and 82801AB (ICH0) IDE Controller Programmer?s Reference Manual I tells us alot about what the BIOS is expected to do. I suppose I could take chunks of code out of filo and put it in coreboot, but how good would that be with a bunch of duplicated code. Well, I will try the Linux IDE guys, maybe they know a simple way to determine the presence of drives and their capabilities (IDENTIFY_DRIVE Command). Thanks - Joe -- coreboot mailing list [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
