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path: root/payloads/libpayload/drivers/usb/uhci.c
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2019-07-02libpayload/usb: Increase USB request timeout to 5 sKeith Short
Increase the timeout for USB requests to 5 seconds for all USB host controllers. Prior to this fix, the xCHI driver was detecting false timeouts during SET ADDRESS requests when nested downstream hubs were connected to the xHCI root hub. BUG=b:124730179 BRANCH=sarien TEST=Build libpayload and depthcharge on sarien/arcada. TEST=Without change replicate USB set address timeouts in depthcharge when dock and 4K monitor connected (which includes a total of 4 USB hubs). With timeout fix, depthcharge boots OS with no USB errors and the same USB topology. Note that this tests xHCI operation only. Change-Id: I53e3e67d893420e7c9e8b52c47dd0edb979e5468 Signed-off-by: Keith Short <keithshort@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/33671 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2019-04-09libpayload: Fix potential NULL pointer dereferenceFrancois Toguo
Found-by: Klockwork BUG=NONE TEST=Boot to OS on GLK Sparky Signed-off-by: Francois Toguo <francois.toguo.fotso@intel.com> Change-Id: I9d4636f0429de829e746909492c2f543026a02ac Reviewed-on: https://review.coreboot.org/c/coreboot/+/32083 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Lijian Zhao <lijian.zhao@intel.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2018-10-15libpayload: Always set pciaddrPatrick Rudolph
For debugging purposes always set the pciaddr attribute. Tested on Lenovo T500. Change-Id: I83a0e7f7196ed251fa0becc4e56bef3ca68f20f4 Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/18599 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2014-11-13libpayload: usb: Remove automatic clear_stall() calls from transfersJulius Werner
We've recently fixed a problem where an external hard drive would choke due to one too many CLEAR_FEATURE(HALT) commands in the XHCI stack with "libpayload: usb: xhci: Fix STALL endpoint handling". Clearing stall conditions from within the transfer function is wrong in general... this is really something that is host controller agnostic and should be left to the higher-level driver to decide. The mass storage driver (the only one that should really encounter stalls right now) already contains the proper amount of clear_stall() calls... any more than that is redundant and as we found out potentially dangerous. This patch removes automatic clear stalls from UHCI and OHCI drivers as well to make things consistent between host controllers. BUG=chromium:192866 TEST=None. I could borrow the original hard drive from Shawn and compile a Snow to only use the OHCI driver to reproduce/verify this, but alas, I am lazy (and it's really not that important). Original-Change-Id: Ie1e4d4d2d70fa4abf8b4dabd33b10d6d4012048a Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/193732 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit d46e183f3e7e0b0130becdefa6fd3ef8097df54b) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: Ie8f4ab3db8ec0d9a2d1e91c62967833e59c46700 Reviewed-on: http://review.coreboot.org/7223 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2014-11-13libpayload: usb: Fix up usb_shutdown() code pathsJulius Werner
This patch combines a few minor fixes and refactoring to the various host controller and root hub drivers to ensure they all do the right thing on a call to usb_exit(). It puts a usb_detach_device(0) call into detach_controller() so that the HCD doesn't need to remember to tear down the root hub itself, and makes sure all root hubs properly detach the subtree of devices connected to their ports first (as generic_hub and by extension XHCI had already been doing). It also fixes up some missing free() calls and replaces most 'ptr = malloc(); if (!ptr) fatal()' idioms with the new x(z)alloc(). BUG=chromium:343415 TEST=Tested EHCI on Big and OHCI, EHCI, and XHCI on Snow. Could not test UHCI (unless anyone volunteers to port coreboot to a ZGB? ;) ), but the changes are really tame. Original-Change-Id: I6eca51ff2685d0946fe4267ad7d3ec48ad7fc510 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/193731 Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit 5791b546e5a21a360d0c65888a5b92d5f48f8178) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I00138f0aeceb12ed721f7368c7788c9b6bee227d Reviewed-on: http://review.coreboot.org/7222 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2014-08-12libpayload: Make USB transfer functions return amount of bytesJulius Werner
The USB bulk and control transfer functions in libpayload currently always return 0 for success and 1 for all errors. This is sufficient for current use cases (essentially just mass storage), but other classes (like certain Ethernet adapters) need to be able to tell if a transfer reached the intended amount of bytes, or if it fell short. This patch slightly changes that USB API to return -1 on errors, and the amount of transferred bytes on successes. All drivers in the current libpayload mainline are modified to conform to the new error detection model. Any third party users of this API will need to adapt their if (...<controller>->bulk/control(...)) checks to if (...<controller>->bulk/control(...) < 0) as well. The host controller drivers for OHCI and EHCI correctly implement the new behavior. UHCI and the XHCI stub just comply with the new API by returning 0 or -1, but do not actually count the returned bytes. Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/48308 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@google.com> Tested-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Updated the patch to support XHCI as well. Change-Id: Ic2ea2810c5edb992cbe185bc9711d2f8f557cae6 (cherry picked from commit e39e2d84762a3804653d950a228ed2269c651458) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6390 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-11-25libpayload: Add USB support for non-PCI controllersStefan Reinauer
Restructure USB stack to not depend on PCI, and make PCI stub available on x86, but provide fixed BARs for ARM (Exynos 5) Change-Id: Iee7c8b134c22b661a9a515e24943470c9dbadd1f Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: https://gerrit.chromium.org/gerrit/49970 Reviewed-on: http://review.coreboot.org/4175 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-06-13libpayload: Redirect USB slave init through controller driverPatrick Georgi
xHCI requires special treatment of set_address since it determines the device number itself (instead of the driver, as with the other controllers). The controller also wants to validate a chosen device configuration and we need to setup additional structures for the device and the endpoints. Therefore, we add three functions to the hci_t structure, namely: set_address() finish_device_config() destroy_device() Current implementation for the Set Address request moved into generic_set_address() which is set_address() for the UHCI, OCHI and EHCI drivers. The latter two are only provided as hooks for the xHCI driver. The Set Configuration request is moved after endpoint enumeration. For all other controller drivers nothing changes, as there is no other device communication between the lines where the set_configuration() call moved. Change-Id: I6127627b9367ef573aa1a1525782bc1304ea350d Signed-off-by: Nico Huber <nico.huber@secunet.com> Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/3447 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2012-12-19libpayload: improved UHCI TD debuggingAnton Kochkov
Improved USB debugging for EHCI by enhacing dump_td to dump all chain information Change-Id: I8c667b43e09c39ff12aafbd779474efd652bd80f Signed-off-by: Anton Kochkov <anton.kochkov@gmail.com> Reviewed-on: http://review.coreboot.org/2054 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber <nico.huber@secunet.com>
2012-12-18libpayload: Use usb_debug() to show USB messagesDave Frodin
Previously printf()'s were used to show USB messages which results in lots of USB information being shown when it isn't needed. This will now use the usb_debug() printing funtion that already exists in usb.h. Change-Id: I2199814de3327417417eb2e26a660f4a5557cb9f Signed-off-by: Dave Frodin <dave.frodin@se-eng.com> Reviewed-on: http://review.coreboot.org/2044 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
2012-11-24libpayload: Handle errors in UHCI interrupt queuesNico Huber
If somethings goes wrong during an interrupt transfer, drop the transfer. Change-Id: I450c08a7a0bf23fbee74237e0355d4a726ace114 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1901 Reviewed-by: Patrick Georgi <patrick@georgi-clan.de> Tested-by: build bot (Jenkins)
2012-11-24libpayload: Handle underruns in UHCI interrupt queuesNico Huber
If usb_poll() isn't called fast enough, the UHCI controller marks an underrun interrupt queue as done (terminating the queue at the head). We can recover from this situation, when usb_poll() gets called again, and the queue is processed. Change-Id: Id56c9df44d6dbd53cd30ad89dfb5bf5977799829 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1898 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-11-24libpayload: Implement correct interrupt-queue linking for UHCINico Huber
The linking of interrupt queues into UHCI controller's framelist (in uhci_create_intr_queue()) was incomplete. The implementation of uhci_destroy_intr_queue() was even worse, looking like it wanted to clean up more than uhci_create_intr_queue() did. This patch follows the simple approach that we used for OHCI and EHCI: Each slot in the framelist holds only one interrupt queue. Therefore, we have to look for free slots each time we want to link an interrupt queue into the framelist. In return, we have a much simpler structured framelist. With this, USB devices using interrupt transfers (e.g. keyboards) can be detached cleanly from UHCI controllers. Also, more than one of such devices can be attached without further risk. Change-Id: I07b81a3b6f2cb3ff69515c973b3ae6321ad969aa Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1897 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-11-14libpayload: Add init() function to hci_t and rework uhci_reset()Nico Huber
uhci_reset() differs in semantics compared to the other HCI's reset() implementations. uhci_reset() does some initialization work after a controller reset. So move the initialization part to a new function, uhci_reinit(), which get's exported through a new entry in hci_t: hci_t.init(). Warning: This breaks code that relies on the current, special, counterintuitive behaviour of uhci_reset(). If one wants a working host controller after calling hci_t.reset(), he should call hci_t.init() afterwards. Change-Id: Ia7ce80865d12d11157645ce251f77f349f8e3c34 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1851 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-07libpayload: Turn the "debug" #define into the usb_debug static inline function.Gabe Black
The "debug" macro used internally in the libpayload USB subsystem was very generically named and would leak into consumers of the library that included usb.h directly or indirectly. This change turns that #define from a macro into a static inline function to move away from the preprocessor, and also renames it to usb_debug so it's less likely to collide with something unrelated. Change-Id: I18717df111aa9671495f8a2a5bdb2c6311fa7acf Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: http://review.coreboot.org/1738 Reviewed-by: Patrick Georgi <patrick@georgi-clan.de> Tested-by: build bot (Jenkins)
2012-10-03libpayload: UHCI driver contained too much magicPatrick Georgi
The handling of finalize in uhci_bulk was confusing, and so its behaviour changed. If set, the driver is supposed to add a trailing empty packet iff the last packet is of maximum packet size. This helps the device to decide if the transfer is completed simply by waiting for a packet that isn't full length. Change-Id: I162e8c1e034924d0de6fdcb971c94cf3a5ea31eb Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/1555 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
2012-10-01libpayload: fix for UHCI bulk transactionsAnton Kochkov
Fixed masking to run QH shedule. Fixed final zero filled TD generation for UHCI bulk transaction. Change-Id: I9c6ea34d132368922f2eeeaa7aadbbb6aac3e2b8 Signed-off-by: Anton Kochkov <anton.kochkov@gmail.com> Reviewed-on: http://review.coreboot.org/1553 Tested-by: build bot (Jenkins) Reviewed-by: Peter Stuge <peter@stuge.se>
2012-09-21UHCI: use proper pointer sizeAnton Kochkov
We used sizeof(listp*) at a place where sizeof(listp) is more appropriate: While these are pointers, they're part of the UHCI design, and don't depend on ISA details. Change-Id: I4d3cb571c9a407103bc81fc171a8e73b68f7c7a1 Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/1530 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
2012-08-23libpayload: add controller type in usbdev_hcAnton Kochkov
Add controller type (UHCI, OHCI, EHCI or XHCI) into usbdev_hc (hci_t) struct, so now we know which type selected controller have. It needed to access controller specific data, if access usb tree outside of libpayload (e.g. in payload intself) Change-Id: I7df947bbb56a50d0d792ccd4d3a6b021ee95e2ea Signed-off-by: Anton Kochkov <anton.kochkov@gmail.com> Reviewed-on: http://review.coreboot.org/1145 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2012-06-09libpayload: Add timeouts in the UHCI USB driverNico Huber
We should always have some timeout when we wait for the hardware. This adds missing timeouts to the UHCI driver. Change-Id: Ic37b95ce12ff3ff5efe3e7ca346090946f6ee7de Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1073 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-06-01libpayload: fix UHCI timeoutMathias Krause
UHCI commands should have a timeout of 30ms, not 30s! Change-Id: Iebcf338317164eb1e683e1de850ffab5022ca3a1 Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Reviewed-on: http://review.coreboot.org/1085 Reviewed-by: Mathias Krause <minipli@googlemail.com> Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-05-31libpayload: Fix b0b4a52b70f0d7c09241f0f718a179fc55d85179Nico Huber
The removal of bitfields came with some glitches in the UHCI driver. This fixes it. Change-Id: Iba8ea3b56b03c526eca7b6388c019568e00be6f5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1069 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-01-10libpayload: Remove bitfield use from UHCI data structuresPatrick Georgi
We agreed that bitfields are a Bad Idea[tm]. Change-Id: I1b2bcda28c52ad10bbe9429e04d126b555f7828a Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/478 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Peter Stuge <peter@stuge.se>
2011-12-24libpayload: remove uhci_reg_maskXPatrick Georgi
Not that good an idea to start with. Coccinelle patch: @@ @@ -void ( -uhci_reg_mask8 | -uhci_reg_mask16 | -uhci_reg_mask32 ) - (...) { ... } @@ @@ -void ( -uhci_reg_mask8 | -uhci_reg_mask16 | -uhci_reg_mask32 ) - (...); @@ expression ctrl, reg, ormask; @@ -uhci_reg_mask32 (ctrl, reg, ~0, ormask) +uhci_reg_write32 (ctrl, reg, uhci_reg_read32 (ctrl, reg) | ormask) @@ expression ctrl, reg, ormask; @@ -uhci_reg_mask16 (ctrl, reg, ~0, ormask) +uhci_reg_write16 (ctrl, reg, uhci_reg_read16 (ctrl, reg) | ormask) @@ expression ctrl, reg, ormask; @@ -uhci_reg_mask8 (ctrl, reg, ~0, ormask) +uhci_reg_write8 (ctrl, reg, uhci_reg_read8 (ctrl, reg) | ormask) @@ expression ctrl, reg, andmask; @@ -uhci_reg_mask32 (ctrl, reg, andmask, 0) +uhci_reg_write32 (ctrl, reg, uhci_reg_read32 (ctrl, reg) & andmask) @@ expression ctrl, reg, andmask; @@ -uhci_reg_mask16 (ctrl, reg, andmask, 0) +uhci_reg_write16 (ctrl, reg, uhci_reg_read16 (ctrl, reg) & andmask) @@ expression ctrl, reg, andmask; @@ -uhci_reg_mask16 (ctrl, reg, andmask, 0) +uhci_reg_write16 (ctrl, reg, uhci_reg_read16 (ctrl, reg) & andmask) Change-Id: Id0eb8327293831e54249d43fd06d50963c793699 Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/477 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2011-11-04libpayload: Drop usb_fatal()Patrick Georgi
We have fatal(), which is just as good. Coccinelle script: @@ expression E; @@ -usb_fatal(E) +fatal(E) Change-Id: Iabecbcc7d068cc0f82687bf51d89c2626642cd86 Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/395 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
2011-11-03libpayload: Reduce verbosity in USB stackMathias Krause
The USB stack is pretty noisy. Reduce the output to a sane level. Change-Id: I250949e5cf74a8c6d43822b2e7487143b2ae1c65 Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Reviewed-on: http://review.coreboot.org/393 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2011-06-30Reduce warnings/errors in libpayload when using picky compiler optionsPatrick Georgi
The new build system uses quite a few more -W flags for the compiler by default than the old one. And that's for the better. Change-Id: Ia8e3d28fb35c56760c2bd0983046c7067e8c5dd6 Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/72 Tested-by: build bot (Jenkins) Reviewed-by: Uwe Hermann <uwe@hermann-uwe.de>
2010-06-11Follow up to the USB refactoring patch: Missed setting pid values correctly.Patrick Georgi
Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de> Acked-by: Patrick Georgi <patrick.georgi@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5631 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-06-07Avoid using the name "pid_t", which is used on unixoid systems.Patrick Georgi
Move controller specific data structures into private headers, to avoid conflicts between controller drivers. Factor out the USB PID ids, which are only exposed on UHCI. It's of not much use on the other controllers. Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5616 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-03-25USB updates from our internal treeStefan Reinauer
- support MMC2 devices - make usb stack more solid - drop some unused functions - fix lowspeed/speed naming - add support for "quirks" - improve usbhid driver Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Joseph Smith <joe@settoplinux.org> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5299 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2009-07-31Catch various cases in libpayload where malloc() or memalign() return NULLStefan Reinauer
Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Peter Stuge <peter@stuge.se> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4474 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2009-07-18Fix off-by-one bug in libpayload UHCI driverStefan Reinauer
Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Myles Watson <mylesgw@gmail.com> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4437 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2009-04-30Some driver fixes for libpayload:Stefan Reinauer
- fix minor bug in serial driver. - latest USB stack fixes - fix dead store in options.c Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Patrick Georgi <patrick.georgi@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4239 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2008-10-16- reduced memory requirements a lot (from >100kb/controller toPatrick Georgi
560bytes/controller) - no need for the client of libpayload to implement usbdisk_{create,remove}, just because USB was compiled in. - usb hub support compiles, and works for some trivial cases (no device detach, trivial power management) - usb keyboard support works in qemu, though there are reports that it doesn't work on real hardware yet. - usb keyboard is integrated in both libc-getchar() and curses, if CONFIG_USB_HID is enabled 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@3662 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2008-09-11Fix the USB code to find the headers after they were moved.Jordan Crouse
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Acked-by: Jordan Crouse <jordan.crouse@amd.com> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3575 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2008-09-02This patch adds USB capabilities to libpayload. It requires somePatrick Georgi
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
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