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https://github.com/ipxe/ipxe
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c69f9589cc
Allow scripts to read basic information from USB device descriptors
via the settings mechanism. For example:
echo USB vendor ID: ${usb/${busloc}.8.2}
echo USB device ID: ${usb/${busloc}.10.2}
echo USB manufacturer name: ${usb/${busloc}.14.0}
The general syntax is
usb/<bus:dev>.<offset>.<length>
where bus:dev is the USB bus:device address (as obtained via the
"usbscan" command, or from e.g. ${net0/busloc} for a USB network
device), and <offset> and <length> select the required portion of the
USB device descriptor.
Following the usage of SMBIOS settings tags, a <length> of zero may be
used to indicate that the byte at <offset> contains a USB string
descriptor index, and an <offset> of zero may be used to indicate that
the <length> contains a literal USB string descriptor index.
Since the byte at offset zero can never contain a string index, and a
literal string index can never be zero, the combination of both
<length> and <offset> being zero may be used to indicate that the
entire device descriptor is to be read as a raw hex dump.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <config/usb.h>
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#include <config/settings.h>
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/** @file
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*
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* USB configuration options
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*
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*/
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PROVIDE_REQUIRING_SYMBOL();
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/*
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* Drag in USB controllers
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*/
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#ifdef USB_HCD_XHCI
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REQUIRE_OBJECT ( xhci );
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#endif
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#ifdef USB_HCD_EHCI
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REQUIRE_OBJECT ( ehci );
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#endif
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#ifdef USB_HCD_UHCI
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REQUIRE_OBJECT ( uhci );
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#endif
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#ifdef USB_HCD_USBIO
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REQUIRE_OBJECT ( usbio );
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#endif
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/*
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* Drag in USB peripherals
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*/
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#ifdef USB_KEYBOARD
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REQUIRE_OBJECT ( usbkbd );
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#endif
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#ifdef USB_BLOCK
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REQUIRE_OBJECT ( usbblk );
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#endif
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/*
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* Drag in USB external interfaces
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*/
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#ifdef USB_EFI
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REQUIRE_OBJECT ( efi_usb );
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#endif
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/*
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* Drag in USB settings mechanism
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*/
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#ifdef USB_SETTINGS
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REQUIRE_OBJECT ( usb_settings );
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#endif
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