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This patch adds USB capabilities to libpayload. It requires some

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memalign implementation (eg. the one I sent yesterday).
Features:
 - UHCI controller driver
 - UHCI root hub driver
 - USB MSC (Mass Storage Class) driver
 - skeleton of a USB HID driver
   (requires better interrupt transfer handling, which is TODO)
 - skeleton of a USB hub driver
   (needs several blank spots filled in, eg. power management.
    Again: TODO)

OHCI and EHCI are not supported, though OHCI support should be rather
easy as the stack provides reasonable abstractions (or so I hope). EHCI
will probably be more complicated.

Isochronous transfers (eg. webcams, audio stuff, ...) are not supported.
They can be, but I doubt we'll have a reason for that in the boot
environment.

The MSC driver was tested against a couple of USB flash drives, and
should be reasonably tolerant by now. But I probably underestimate
the amount of bugs present in USB flash drives, so feedback is welcome.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3560 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Patrick Georgi
2008-09-02 16:06:22 +00:00
parent 5ccfa1ac79
commit d21f68bbd5
16 changed files with 2427 additions and 0 deletions
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41
payloads/libpayload/Config.in
View File

@ -132,5 +132,46 @@ config SPEAKER
bool "Support for PC speaker"
default y
config USB
bool "USB Support"
default n
config USB_UHCI
bool "Support for USB UHCI controllers"
depends on USB
help
Select this option if you are going to use USB 1.1 on an Intel based
system.
config USB_OHCI
bool "Support for USB OHCI controllers"
depends on USB
help
Select this option if you are going to use USB 1.1 on an AMD based
system.
NOTE: This option is not (fully) implemented yet
config USB_EHCI
bool "Support for USB EHCI controllers"
depends on USB
help
Select this option if you want to use USB 2.0
NOTE: This option is not (fully) implemented yet
config USB_HID
bool "Support for USB keyboards (broken)"
depends on USB
default n
config USB_HUB
bool "Support for USB hubs (broken)"
depends on USB
default n
config USB_MSC
bool "Support for USB storage"
depends on USB
endmenu