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* musb-new: Fix reset sequence when in host modeHans de Goede2015-01-18-0/+2
| | | | | | | | | | | | | | | | | | | | | | This commit fixes a number of issues with the reset sequence of musb-new in host mode: 1) Our usb device probe relies on a second device reset being done after the first descriptors read. Factor the musb reset code into a usb_reset_root_port function (and add this as an empty define for other controllers), and call this when a device has no parent. 2) Just like with normal usb controllers there needs to be a delay after reset, for normal usb controllers, this is handled in hub_port_reset, add a delay to usb_reset_root_port. 3) Sync the musb reset sequence with the upstream kernel, clear all bits of power except bits 4-7, and increase the time reset is asserted to 50 ms. With these fixes an usb keyboard I have now always enumerates properly, where as earlier it would only enumerare properly once every 5 tries. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* usb: Do not log an error when no devices is plugged into a root-hub-less hcdHans de Goede2015-01-18-4/+5
| | | | | | | | | | | | | | | | | | Before this commit u-boot would print the following on boot with musb and no usb device plugged in: starting USB... USB0: Port not available. USB error: all controllers failed lowlevel init This commit changes this to: starting USB... USB0: Port not available. Which is the correct thing to do since the low-level init went fine. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* Replace <compiler.h> with <linux/compiler.h>Masahiro Yamada2014-12-08-1/+0
| | | | | | Including <linux/compiler.h> is enough for general use. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* usb: Remove unnecessary portnr lookup from usb_new_deviceHans de Goede2014-11-04-17/+2
| | | | | | | | If the device has a parent, it is instantiated from usb_hub_port_connect_change and the portnr is right there in dev->portnr, so there is no need for this whole dance to look it up. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* usb: Handle -ENODEV from usb_lowlevel_init()Marek Vasut2014-08-29-2/+9
| | | | | | | | | | As we support both Host and Device mode operation, an OTG controller can return -ENODEV on a port which it found to be in Device mode during Host mode scan for devices. In case -ENODEV is returned, print that the port is not available and continue instead of screaming a bloody error message. Signed-off-by: Marek Vasut <marex@denx.de>
* usb: add enum usb_init_type parameter to usb_lowlevel_initTroy Kisky2013-10-20-1/+1
| | | | | | This parameter will later be used to verify OTG ports. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
* usb: rename board_usb_init_type to usb_init_typeTroy Kisky2013-10-20-1/+1
| | | | | | | | | | This will be used by usb_lowlevel_init so it will no longer be used by only board specific functions. Move definition of enum usb_init_type higher in file so that it will be available for usb_low_level_init. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
* usb: new board-specific USB init interfaceMateusz Zalega2013-10-20-0/+6
| | | | | | | | | | | | | | This commit unifies board-specific USB initialization implementations under one symbol (usb_board_init), declaration of which is available in usb.h. New API allows selective initialization of USB controllers whenever needed. Signed-off-by: Mateusz Zalega <m.zalega@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com> Cc: Marek Vasut <marex@denx.de> Cc: Lukasz Majewski <l.majewski@samsung.com>
* USB: xHCI: Add stack support for xHCIVivek Gautam2013-10-20-2/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | This adds stack layer for eXtensible Host Controller Interface which facilitates use of USB 3.0 in host mode. Adapting xHCI host controller driver in linux-kernel by Sarah Sharp to needs in u-boot. Initial porting from Linux kernel version 3.4, with following top commit history of drivers/usb/host/xhci* : cf84055 xHCI: Cleanup isoc transfer ring when TD length mismatch found This adds the basic xHCI host controller driver with bare minimum features: - Control/Bulk transfer support has been added with required infrastructure for necessary xHC data structures. - Stream protocol hasn't been supported yet. - No support for quirky devices has been added. Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com> Signed-off-by: Julius Werner <jwerner@chromium.org> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Cc: Simon Glass <sjg@chromium.org> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Dan Murphy <dmurphy@ti.com> Cc: Marek Vasut <marex@denx.de>
* usb: Use well-known descriptor sizes when parsing configurationJulius Werner2013-08-26-16/+71
| | | | | | | | | | | The existing USB configuration parsing code relies on the descriptors' own length values when reading through the configuration blob. Since the size of those descriptors is always well-defined, we should rather use the known sizes instead of trusting device-provided values to be correct. Also adds some safety to potential out-of-order descriptors. Change-Id: I16f69dfdd6793aa0fe930b5148d4521f3e5c3090 Signed-off-by: Julius Werner <jwerner@chromium.org>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-19/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* USB: SS: Add support for Super Speed USB interfaceVivek Gautam2013-05-05-0/+5
| | | | | | | | This adds usb framework support for super-speed usb, which will further facilitate to add stack support for xHCI. Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
* usb: Update device class in usb device's descriptorVivek Gautam2013-05-05-0/+5
| | | | | | | | Fetch the device class into usb device's dwcriptors, so that the host controller's driver can use this info to differentiate between HUB and DEVICE. Signed-off-by: Amar <amarendra.xt@samsung.com>
* USB: Some cleanup prior to USB 3.0 interface additionVivek Gautam2013-05-05-8/+13
| | | | | | | Some cleanup in usb framework, nothing much on feature side. Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
* usb: common: Weed out USB_**_PRINTFs from usb frameworkVivek Gautam2013-05-05-48/+37
| | | | | | | | USB_PRINTF, USB_HUB_PRINTF, USB_STOR_PRINTF, USB_KBD_PRINTF are nothing but conditional debug prints, depending on DEBUG. So better remove them and use debug() simply. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
* usb: Clean up newly allocated device nodes in case of configuration failureMilind Choudhary2012-12-17-0/+12
| | | | | | | | If probe of a newly connected device fails for some reason, clean up the allocated entry in usb_dev array. Signed-off-by: Milind Choudhary <milindc@codeaurora.org> Signed-off-by: Simon Glass <sjg@chromium.org>
* usb: use linux/usb/ch9.h instead of usbdescriptors.hIlya Yanok2012-11-20-2/+2
| | | | | | | | | | | | | | | | | | | | | | Linux usb/ch9.h seems to have all the same information (and more) as usbdescriptors.h so use the former instead of the later one. As a consequense of this change USB_SPEED_* values don't correspond directly to EHCI speed encoding anymore, I've added necessary recoding in EHCI driver. Also there is no point to put speed into pipe anymore so it's removed and a bunch of host drivers fixed to look at usb_device->speed instead. Old usbdescriptors.h included is not removed as it seems to be used by old USB device code. This makes usb.h and usbdevice.h incompatible. Fortunately the only place that tries to include both are the old MUSB code and it needs usb.h only for USB_DMA_MINALIGN used in aligned attribute on musb_regs structure but this attribute seems to be unneeded (old MUSB code doesn't support any DMA at all). Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
* usb: fallback safely when a configuration descriptor is too largeVincent Palatin2012-10-22-3/+9
| | | | | | | | | | | | | | | When a USB configuration descriptor was larger than our USB buffer (512 bytes), we were skipping the full descriptor reading but then we were still parsing and using it, triggering memory corruptions. Now in that case, it just skips this device enumeration and displays the appropriate message to the user, so he can fix the buffer if he wants. This bug was triggered by some UVC webcams which have very large configuration descriptors (e.g. a couple of kB) describing all their supported video encodings. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* usb: add support for multiple usb controllersLucas Stach2012-10-15-50/+56
| | | | | | | | | Allows to initialize more than one USB controller at once. v2: print message when controller stop fails Signed-off-by: Lucas Stach <dev@lynxeye.de> Reviewed-by: Marek Vasut <marex@denx.de>
* usb: lowlevel interface change to support multiple controllersLucas Stach2012-10-15-4/+6
| | | | | | | | | | | Carry an index in the lowlevel usb functions to make specify the respective usb controller. Also pass through an controller struct from lowlevel_init to the creation of the root usb device of this controller. Signed-off-by: Lucas Stach <dev@lynxeye.de> Reviewed-by: Marek Vasut <marex@denx.de>
* usb: check return value of submit_{control, bulk}_msgIlya Yanok2012-07-18-2/+4
| | | | | | | Return values of submit_{control,bulk}_msg() functions should be checked to detect possible error. Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
* usb: pass cache-aligned buffer to usb_get_descriptor()Ilya Yanok2012-07-18-2/+4
| | | | | | | usb_get_descriptor passes it's buffer argument directly to usb_control_msg() so it has to be properly aligned/padded. Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
* USB: Align buffers at cachelinePuneet Saxena2012-05-20-11/+11
| | | | | | | | | | | | This avoids cache-alignment warnings shown in console when a usb command is entered. Whenever X bytes of unaligned buffer is invalidated, arm core invalidates X + Y bytes as per the cache line size and throws these warnings. Signed-off-by: Puneet Saxena <puneets@nvidia.com> Signed-off-by: Marek Vasut <marex@denx.de>
* usb: use noinline defineMike Frysinger2012-05-20-1/+2
| | | | | | | | | | Building usb for Blackfin boards fails as we get linux/compiler.h included which expands the "noinline" inside of the attribute and we get attribute(attribute(noinline)). Explicitly use the helper define to avoid this. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* usb: replace wait_ms() with mdelay()Mike Frysinger2012-03-19-13/+3
| | | | | | | | | | | | | | | | | | | | | | | Common code has a mdelay() func, so use that instead of the usb-specific wait_ms() func. This also fixes the build errors: ohci-hcd.c: In function 'submit_common_msg': /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1519:9: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1816:10: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1827:10: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1844:10: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1563:11: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1583:9: sorry, unimplemented: called from here make[1]: *** [ohci-hcd.o] Error 1 Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Marek Vasut <marex@denx.de>
* USB: Make struct devrequest setup_packet localMarek Vasut2012-03-03-1/+2
| | | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Remy Bohmer <linux@bohmer.net> Acked-by: Mike Frysinger <vapier@gentoo.org>
* USB: Separate out USB hub driverMarek Vasut2012-03-03-430/+2
| | | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Remy Bohmer <linux@bohmer.net> Acked-by: Mike Frysinger <vapier@gentoo.org>
* USB: Staticize internal functionsMarek Vasut2012-03-03-22/+23
| | | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Remy Bohmer <linux@bohmer.net> Acked-by: Mike Frysinger <vapier@gentoo.org>
* USB: Use (get|put)_unaligned for accessing wMaxPacketSizeTom Rini2011-12-16-8/+19
| | | | | | | | | | | | | | | | | | | | | | In 9792987721c7980453fe6447c3fa6593b44f8458 Stefan describes a usecase where the previous behavior of leaving wMaxPacketSize be unaligned caused fatal problems. The initial fix for this problem was incomplete however as it showed another cases of non-aligned access that previously worked implicitly. This switches to making sure that all access of wMaxPacketSize are done via (get|put)_unaligned. In order to maintain a level of readability to the code in some cases we now use a variable for the value of wMaxPacketSize and in others, a macro. Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Remy Bohmer <linux@bohmer.net> OpenRISC: Tested-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Beagleboard xM, Pandaboard run-tested, s5p_goni build-tested. Signed-off-by: Tom Rini <trini@ti.com>
* GCC4.6: Fix common/usb.c on xscaleMarek Vasut2011-11-15-4/+9
| | | | | | | | | | The problem was that the code, when the function was compiled with -Os, was misgenerated. As in the function description, this is likely another manifestation of the bug in GCC. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Remy Bohmer <linux@bohmer.net>
* GCC4.6: Squash warnings in common/usb.cMarek Vasut2011-10-27-14/+7
| | | | | | | | | | | | | | | | | usb.c: In function ‘usb_parse_config’: usb.c:331:17: warning: variable ‘ch’ set but not used [-Wunused-but-set-variable] usb.c: In function ‘usb_hub_port_connect_change’: usb.c:1123:29: warning: variable ‘portchange’ set but not used [-Wunused-but-set-variable] usb.c: In function ‘usb_hub_configure’: usb.c:1183:25: warning: variable ‘hubsts’ set but not used [-Wunused-but-set-variable] Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Mike Frysinger <vapier@gentoo.org>
* common/usb.c: fix warning: variable ... set but not usedWolfgang Denk2011-10-09-7/+13
| | | | | | | | | | | | | | Fix: usb.c: In function 'usb_parse_config': usb.c:331:17: warning: variable 'ch' set but not used [-Wunused-but-set-variable] usb.c: In function 'usb_hub_port_connect_change': usb.c:1123:29: warning: variable 'portchange' set but not used [-Wunused-but-set-variable] usb.c: In function 'usb_hub_configure': usb.c:1183:25: warning: variable 'hubsts' set but not used [-Wunused-but-set-variable] Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Remy Bohmer <linux@bohmer.net> Acked-by: Remy Bohmer <linux@bohmer.net>
* Revert "GCC4.6: Convert various empty macros to inline functions"Wolfgang Denk2011-10-04-2/+2
| | | | | | | | | | | | This reverts commit 60ce53cf9f408d9ad721f8e7a87d6a564e6d5bac. The commit causes build breakage for a number of boards. This results from the fact that now the arguments of debug() actually get referenced (even if there is hope that the compiler will optimize away the debug() call). The obvious fix to that probem (change the code to always declare the referenced variables and data structures) increases the code size, and was this rejected. So it was decided to revert this commit until a better solution is found.
* GCC4.6: Convert various empty macros to inline functionsMarek Vasut2011-10-01-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | Fix the following gcc4.6 problems: cmd_date.c: In function ‘do_date’: cmd_date.c:50:6: warning: variable ‘old_bus’ set but not used [-Wunused-but-set-variable] asix.c: In function ‘asix_init’: asix.c:317:6: warning: variable ‘rx_ctl’ set but not used [-Wunused-but-set-variable] usb.c: In function ‘usb_parse_config’: usb.c:331:17: warning: variable ‘ch’ set but not used [-Wunused-but-set-variable] usb.c: In function ‘usb_hub_port_connect_change’: usb.c:1123:29: warning: variable ‘portchange’ set but not used [-Wunused-but-set-variable] usb.c: In function ‘usb_hub_configure’: usb.c:1183:25: warning: variable ‘hubsts’ set but not used [-Wunused-but-set-variable] usb_storage.c: In function ‘usb_stor_CB_reset’: usb_storage.c:466:6: warning: variable ‘result’ set but not used [-Wunused-but-set-variable] Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
* USB: Move USB_PRINTF() out of ifdef in usb_scan_devices()Marek Vasut2011-08-08-1/+1
| | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
* USB: Set portnr so USB1.1 and 1.0 devices work on EHCI controllersMarek Vasut2011-08-08-0/+1
| | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
* Add USB host ethernet adapter supportSimon Glass2011-02-19-1/+5
| | | | | | | | | | | | This adds support for using USB Ethernet dongles in host mode. This is just the framework - drivers will come later. A new config option called CONFIG_USB_HOST_ETHER can be defined in board config files to switch this on. The was originally written by NVIDIA and was cleaned up for release by the Chromium authors. Signed-off-by: Simon Glass <sjg@chromium.org>
* USB: Change the necessary defines to get debug outputAlexander Holler2011-02-05-3/+4
| | | | | | | | | | | While debugging some USB stuff, I've first missed that there are actually two defines necessary to get usefull output. The one needed to get debug output for the communication with HUBs was burried somewhere deep inside the code. Change that so that a #define DEBUG is enough while still leaving the possibility to reduce unwanted debug output. Signed-off-by: Alexander Holler <holler@ahsoftware.de>
* USB: Fix device stati for removable and powerctrl (typo)Alexander Holler2011-02-05-1/+1
| | | | | | | I currently don't know if the error could have other consequences than a wrong output when turning debug on. Signed-off-by: Alexander Holler <holler@ahsoftware.de>
* USB: usb_control_msg wait for driver ISR to set status.Remy Bohmer2010-02-03-7/+12
| | | | | | | | | This patch changes usb_control_msg back to the state prior to commit 48867208444cb2a82e2af9c3249e90b7ed4a1751. The USB driver ISR routine may update the status. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
* USB Consolidate descriptor definitionsTom Rix2009-12-20-18/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The header files usb.h and usbdescriptors.h have the same nameed structure definitions for usb_config_descriptor usb_interface_descriptor usb_endpoint_descriptor usb_device_descriptor usb_string_descriptor These are out right duplicates in usb.h usb_device_descriptor usb_string_descriptor This one has extra unused elements usb_endpoint_descriptor unsigned char bRefresh unsigned char bSynchAddress; These in usb.h have extra elements at the end of the usb 2.0 specified descriptor and are used. usb_config_descriptor usb_interface_descriptor The change is to consolidate the definition of the descriptors to usbdescriptors.h. The dublicates in usb.h are removed. The extra element structure will have their name shorted by removing the '_descriptor' suffix. So usb_config_descriptor -> usb_config usb_interface_descriptor -> usb_interface For these, the common descriptor elements are accessed now by an element 'desc'. As an example - if (iface->bInterfaceClass != USB_CLASS_HUB) + if (iface->desc.bInterfaceClass != USB_CLASS_HUB) This has been compile tested on MAKEALL arm, ppc and mips. Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
* usb_scan_devices: fix output with no devicesBryan Wu2009-01-28-2/+4
| | | | | | | | | | We should check the return of usb_new_device() so that if no USB device is found, we print out the right message rather than always saying "new usb device found". Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Remy Bohmer <linux@bohmer.net>
* USB: Add high-speed (480Mb/s) to all USB related outputsStefan Roese2009-01-28-6/+13
| | | | | | | | | | With this patch the USB related connection speed output ("usb tree" command and debug output) is now high-speed enabled. This patch also fixes a compilation warning when debugging is enabled. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Remy Bohmer <linux@bohmer.net>
* USB change speedMichael Trimarchi2009-01-28-2/+10
| | | | | | | USB changes the speed according to the port status Signed-off-by: Michael Trimarchi <trimarchimichael@yahoo.it> Signed-off-by: Remy Bohmer <linux@bohmer.net>
* Prepare USB layer for ehciMichael Trimarchi2009-01-28-1/+1
| | | | | | | Prepare USB layer for ehci support Signed-off-by: Michael Trimarchi <trimarchi@gandalf.sssup.it> Signed-off-by: Remy Böhmer <linux@bohmer.net>
* USB style patch, 80 chars strictMichael Trimarchi2008-11-28-15/+25
| | | | | | | USB Code style patch Signed-off-by: Michael Trimarchi <trimarchi@gandalf.sssup.it> Signed-off-by: Remy Böhmer <linux@bohmer.net>
* fix USB initialisation procedureRemy Bohmer2008-10-14-28/+28
| | | | | | | | | | | | | | | | | | | | | | | | | The max packet size is encoded as 0,1,2,3 for 8,16,32,64 bytes. At some places directly 8,16,32,64 was used instead of the encoded value. Made a enum for the options to make this more clear and to help preventing similar errors in the future. After fixing this bug it became clear that another bug existed where the 'pipe' is and-ed with PIPE_* flags, where it should have been 'usb_pipetype(pipe)', or even better usb_pipeint(pipe). Also removed the triple 'get_device_descriptor' sequence, it has no use, and Windows nor Linux behaves that way. There is also a poll going on with a timeout when usb_control_msg() fails. However, the poll is useless, because the flag will never be set on a error, because there is no code that runs in a parallel that can set this flag. Changed this to something more logical. Tested on AT91SAM9261ek and compared the flow on the USB bus to what Linux is doing. There is no difference anymore in the early initialisation sequence. Signed-off-by: Remy Bohmer <linux@bohmer.net> Signed-off-by: Markus Klotzbuecher <mk@denx.de>
* USB layer of U-Boot causes USB protocol errors while using USB memory sticksRemy Bohmer2008-09-17-20/+30
| | | | | | | | | | | | | | | | | | There are several differences between Linux, Windows and U-boot for initialising the USB devices. While analysing the behaviour of U-boot it turned out that U-boot does things really different, and some are wrong (compared to the USB standard). This patch fixes some errors: * The NEW_init procedure that was already in the code is good, while the old procedure is wrong. See code comments for more info. * On a Control request the data returned by the device can be more than 8 bytes, while the host limits it to 8 bytes. This caused the host to generate a DataOverrun error. This results in a lot of USB sticks not being recognised, and the transmission ended frequently with a CTL:TIMEOUT Error. * Added a flag CONFIG_LEGACY_USB_INIT_SEQ to allow users to use the old init procedure. Signed-off-by: Remy Bohmer <linux@bohmer.net> Signed-off-by: Markus Klotzbuecher <mk@denx.de>
* Refactoring parts of the common USB OHCI codeRemy Bohmer2008-09-17-236/+306
| | | | | | | | | | | | This patch refactors some large routines of the USB OHCI code by making some routines smaller and more readable which helps debugging and understanding the code. (Makes the code looks somewhat more like the Linux implementation.) Also made entire file compliant to Linux Coding Rules (checkpatch.pl compliant) Signed-off-by: Remy Bohmer <linux@bohmer.net> Signed-off-by: Markus Klotzbuecher <mk@denx.de>
* Fix for USB sticks not working on ARM while using GCC 4.x compilersRemy Bohmer2008-09-17-27/+46
| | | | | | | | | | | | | | | | | | | | | | | The GCC-compiler makes an optimisation error while optimising the routine usb_set_maxpacket(). This should be fixed in the compiler in the first place, but there lots of compilers out there that makes this error, that it is probably wiser to workaround it in U-boot itself. What happens is that the register r3 is used as loop-counter 'i', but gets overwritten later on. From there it starts using register r3 for several other things and the assembler code is becoming a big mess. This is clearly a compiler bug. This error occurs on at least several versions of Code Sourcery Lite compilers for ARM. Like the Edition 2008q1, and 2008q3, It has also been seen on other compilers, while compiling for armv4t, or armv5te with Os, O1 and O2. We work around it by splitting up this routine in 2 parts, and making sure that the split out part is NOT inlined any longer. This will make GCC spit out assembler that do not show this problem. Another possibility is to adapt the Makefile to stop optimisation for the complete file. I think this solution is nicer. Signed-off-by: Remy Bohmer <linux@bohmer.net> Signed-off-by: Markus Klotzbuecher <mk@denx.de>
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