yes, just enumerate all ports/hubs. here's mine: https://github.com/MattDevo/coreboot/blob/master/cbfs/bootorder.usb
if there's an impact on boot time its imperceptible. What can slow things down are connected devices which don't initialize/respond to queries within the USB spec, but this is regardless of their presence in the bootorder file On Sat, Dec 2, 2017 at 12:16 PM, Hal Martin <[email protected]> wrote: > Hi Matt, > > That's a great tip, thanks for the link! > > Looking at the file, it seems I would just specify every USB port from the > PCH EHCI/xHCI controllers. > > Do you know if this slows down boot noticeably if there are USB devices > attached which aren't bootable (e.g. keyboard)? Or the case where there are > potentially bootable devices (e.g. mass storage) but which lack a > bootloader in the MBR? > > I'll be back with results once I've done some testing. > > Thanks again, > Hal > > On Sat, Dec 2, 2017 at 7:08 PM, Matt DeVillier <[email protected]> > wrote: > >> >> Hal, >> >> your USB controllers are at 14.0 and 1d.0, so your bootorder file needs >> to enumerate all devices attached to said controllers. I'm not sure how >> many devices can be attached to each for IvyBridge, but here's the >> bootorder file Google uses for reference: >> >> https://chromium.googlesource.com/chromiumos/third_party/sea >> bios/+/firmware-eve-9584.B/chromeos/bootorder >> >> HTH, >> Matt >> >> On Sat, Dec 2, 2017 at 2:09 AM, Hal Martin <[email protected]> wrote: >> >>> Hi all, >>> >>> I'd like to learn more about SeaBIOS boot order, but unfortunately I >>> wasn't able to find the answer to my question on the wiki page: >>> https://www.coreboot.org/SeaBIOS#Configuring_boot_order >>> >>> I would like to add a bootscript for SeaBIOS to search for USB boot >>> devices before falling back to the hdd or PXE. >>> >>> If I have USB bootable media plugged in, SeaBIOS seems to immediately >>> boot from the hdd. I'm not able to boot from USB unless I physically unplug >>> the SATA connection. >>> >>> When I look at the console log in cbmem, I don't see SeaBIOS searching >>> the USB controller at all. >>> >>> It's an Ivy Bridge platform. >>> >>> SeaBIOS log from cbmem: >>> Searching bootorder for: /pci@i0cf8/*@1f,2/drive@0/disk@0 >>> Searching bootorder for: /pci@i0cf8/pci-bridge@1c,3/*@0 >>> Press ESC for boot menu. >>> >>> lspci: >>> 00:00.0 Host bridge [0600]: Intel Corporation 3rd Gen Core processor >>> DRAM Controller [8086:0154] (rev 09) >>> 00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v2/3rd Gen >>> Core processor PCI Express Root Port [8086:0151] (rev 09) (prog-if 00 >>> [Normal decode]) >>> 00:01.1 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v2/3rd Gen >>> Core processor PCI Express Root Port [8086:0155] (rev 09) (prog-if 00 >>> [Normal decode]) >>> 00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core >>> processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA >>> controller]) >>> 00:14.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series >>> Chipset Family USB xHCI Host Controller [8086:1e31] (rev 04) (prog-if 30 >>> [XHCI]) >>> 00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit >>> Network Connection (Lewisville) [8086:1502] (rev 04) >>> 00:1a.0 USB controller [0c03]: Intel Corporation 7 Series/C216 Chipset >>> Family USB Enhanced Host Controller #2 [8086:1e2d] (rev 04) (prog-if 20 >>> [EHCI]) >>> 00:1b.0 Audio device [0403]: Intel Corporation 7 Series/C216 Chipset >>> Family High Definition Audio Controller [8086:1e20] (rev 04) >>> 00:1c.0 PCI bridge [0604]: Intel Corporation 7 Series/C216 Chipset >>> Family PCI Express Root Port 1 [8086:1e10] (rev c4) (prog-if 00 [Normal >>> decode]) >>> 00:1c.4 PCI bridge [0604]: Intel Corporation 7 Series/C210 Series >>> Chipset Family PCI Express Root Port 5 [8086:1e18] (rev c4) (prog-if 00 >>> [Normal decode]) >>> 00:1d.0 USB controller [0c03]: Intel Corporation 7 Series/C216 Chipset >>> Family USB Enhanced Host Controller #1 [8086:1e26] (rev 04) (prog-if 20 >>> [EHCI]) >>> 00:1f.0 ISA bridge [0601]: Intel Corporation HM76 Express Chipset LPC >>> Controller [8086:1e59] (rev 04) >>> 00:1f.2 SATA controller [0106]: Intel Corporation 7 Series Chipset >>> Family 6-port SATA Controller [AHCI mode] [8086:1e03] (rev 04) (prog-if 01 >>> [AHCI 1.0]) >>> 00:1f.3 SMBus [0c05]: Intel Corporation 7 Series/C216 Chipset Family >>> SMBus Controller [8086:1e22] (rev 04) >>> 00:1f.6 Signal processing controller [1180]: Intel Corporation 7 >>> Series/C210 Series Chipset Family Thermal Management Controller [8086:1e24] >>> (rev 04) >>> >>> Any suggestions? >>> >>> Thanks, >>> Hal >>> >>> -- >>> coreboot mailing list: [email protected] >>> https://mail.coreboot.org/mailman/listinfo/coreboot >>> >> >> >
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