Quoting Corey Osgood <[EMAIL PROTECTED]>: > oops, meant to cc the list, apparently can't from my cell :( > > [EMAIL PROTECTED] wrote: >> Quoting Corey Osgood <[EMAIL PROTECTED]>: >> >>> It's board specific, if you saw that in i810, it's for onboard vga. >>> -Corey >>> >>> On 10/12/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> >>> wrote: >>>> Hello, >>>> >>>> Can someone tell me what this memory region is reserved for? >>>> It is 1MB to The Top Of Low Memory - 1MB right? >>>> Is the last 1MB chipset specific or needed for the LinuxBIOS bounce >>>> buffer? >>>> >>>> ram_resource(dev, idx++, 1024, tolmk - 1024; >>>> >>>> Oh, this is from northbridge.c if you were wondering. I need to know >>>> this, because Intel IGD reserves memory from the The Top Of Physical >>>> Memory down. >>>> If this is the case should I subtract the IGD memory before or after >>>> this function is called. >>>> >>>> Example 1: >>>> tolmk -= IGD_MEMORYK >>>> ram_resource(dev, idx++, 1024, tolmk - 1024; >>>> >>>> OR >>>> >>>> Example 2: >>>> ram_resource(dev, idx++, 1024, (tolmk - IGD_MEMORYK) - 1024); >>>> ram_resource(dev, idx++, (tolmk - IGD_MEMORYK) - 1024, tolmk - >>>> IGD_MEMORYK); >>>> >>>> >>>> Thanks - Joe >>>> >> Hmm, I saw where you set the >> >> /* Enable 1MB framebuffer. */ >> //pci_write_config8(ctrl->d0, SMRAM, 0xC0); >> >> In raminit.c but no mention of this in northbridge.c. > > I have no idea why I left the 1MB subtraction in there, probably because > at the time I was planning on getting back to it and just haven't yet. > >> But if that is what that last 1MB is for I can just do a: >> >> ram_resource(dev, idx++, 1024, tolmk - IGD_MEMORYK; >> >> Right?? But, if I do this then is the IGD_MEMORYK going to be >> initialized? > > Yes. But is there any way to use CONFIG_VIDEO_MB instead of a new config > option? Perhaps have 0 or 2 = 512k? > >> From the datasheet: >> The pre-allocated memory allows sizes of 512 KB, 1 MB, or 8 MB. The >> system BIOS must properly initialize these regions. > > This is exactly what it's talking about ;) > > -Corey > Oh, thanks. Is CONFIG_VIDEO_MB a new option? I have not seen that one before. Can it only be used for MB? What about 512K? Do I just list it in Options.lb??
Thanks - Joe -- linuxbios mailing list [email protected] http://www.linuxbios.org/mailman/listinfo/linuxbios
