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2014-07-23dm: Allow drivers to be marked 'before relocation'Simon Glass
Driver model currently only operates after relocation is complete. In this state U-Boot typically has a small amount of memory available. In adding support for driver model prior to relocation we must try to use as little memory as possible. In addition, on some machines the memory has not be inited and/or the CPU is not running at full speed or the data cache is off. These can reduce execution performance, so the less initialisation that is done before relocation the better. An immediately-obvious improvement is to only initialise drivers which are actually going to be used before relocation. On many boards the only such driver is a serial UART, so this provides a very large potential benefit. Allow drivers to mark themselves as 'pre-reloc' which means that they will be initialised prior to relocation. This can be done either with a driver flag or with a 'dm,pre-reloc' device tree property. To support this, the various dm scanning function now take a 'pre_reloc_only' parameter which indicates that only drivers marked pre-reloc should be bound. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-20dm: Expand and improve the device lifecycle docsSimon Glass
The lifecycle of a device is an important part of driver model. Add to the existing documentation and clarify it. Reported-by: Jon Loeliger <jdl@jdl.com> Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-20dm: Rename struct device_id to udevice_idSimon Glass
It is best to avoid having any occurence of 'struct device' in driver model, so rename to achieve this. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-06-11docs: driver-model: Fix spellingChris Packham
Signed-off-by: Chris Packham <judge.packham@gmail.com>
2014-05-27dm: rename device struct to udeviceHeiko Schocher
using UBI and DM together leads in compiler error, as both define a "struct device", so rename "struct device" in include/dm/device.h to "struct udevice", as we use linux code (MTD/UBI/UBIFS some USB code,...) and cannot change the linux "struct device" Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Marek Vasut <marex@denx.de>
2014-03-04dm: Remove old driver model documentationSimon Glass
This documentation pertains to the planned implementation of driver model in U-Boot for each subsystem, but it has not been superseded. It is probably better to have this documentation in the source code for each subsystem where possible, so that docbook will pick it up. Where this does not make sense, new documentation can be placed in some suitable file in doc/driver-model. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-04dm: Add README for driver modelSimon Glass
This adds a README to help with understanding of this series. Signed-off-by: Simon Glass <sjg@chromium.org>
2014-02-06ARM: serial: Remove the IXP UART driverMarek Vasut
This driver is no longer used, remove it. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: Michael Schwingen <michael@schwingen.org> Cc: Tom Rini <trini@ti.com>
2014-02-06ARM: PCI: Remove the IXP PCI driverMarek Vasut
The driver is no longer used, remove it. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: Michael Schwingen <michael@schwingen.org> Cc: Tom Rini <trini@ti.com>
2013-11-08cosmetic: UDM-net: clean up the remainders of dead driverMasahiro Yamada
This commit omits non-existing drivers/net/netarm_eth.c from the list. This driver is deleted by commit b411eb30f. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-11-08cosmetic: UDM-serial: clean up the remainders of dead driverMasahiro Yamada
The following serial drivers do not exist any more. - ns9750_serial.c: deleted by commit 4cfc611b4 - s3c4510b_uart.c: deleted by commit afad40299 - serial_clps7111.c: deleted by commit f2e080156 - serial_netarm.c: deleted by commit b411eb30f This commit cleans up UDM-serial.txt. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-11-08cosmetic: doc: driver-model: Do not number driver listsMasahiro Yamada
Everytime a dead driver is removed from the list, we must re-number. This is a painful task. Try git show e53232250 -- doc/driver-model/UDM-serial.txt git show 6f62f4207 -- doc/driver-model/UDM-serial.txt git show b9f4bc34a -- doc/driver-model/UDM-serial.txt to see what I mean. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-10-14Coding Style cleanup: drop some excessive empty linesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-10-14Coding Style cleanup: replace leading SPACEs by TABsWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Drop changes for PEP 4 following python tools] Signed-off-by: Tom Rini <trini@ti.com>
2013-09-19drivers: s3c44b0_rtc: delete an unused driverMasahiro Yamada
Since commit 5dc5f36 removed B2 board support, there are no boards enabling s3c44b0_rtc. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Andrea Scian <andrea.scian@dave-tech.it>
2013-09-19drivers: serial_s3c44b0: delete an unused driverMasahiro Yamada
Since commit 5dc5f36 removed B2 board support, there are no boards enabling serial_s3c44b0. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Andrea Scian <andrea.scian@dave-tech.it>
2013-07-24block: constify sect_buf argument of ide_write_dataGabor Juhos
Add a const keyword to the sect_buf argument of ide_write_data to fix the following warning: cmd_ide.c: In function '__ide_output_data': cmd_ide.c:548: warning: passing argument 2 of 'ide_write_data' discards qualifiers from pointer target type /devel/u-boot.git/include/ide.h:76: note: expected 'ulong *' but argument is of type 'const ulong *' Also modify the driver-model documentation to match with the new prototype. Compile tested only. Cc: Macpaul Lin <macpaul@andestech.com> Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
2013-05-15Power: remove support for Freescale MPC8220Wolfgang Denk
The Freescale MPC8220 Power Architecture processors have long reached EOL; Freescale does not even list these any more on their web site. Remove the code to avoid wasting maitaining efforts on dead stuff. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Andy Fleming <afleming@gmail.com>
2013-04-12arm: Remove support for unused s3c64xxBenoît Thébaudeau
Following the removal of the smdk6400 board, the s3c64xx SoC becomes unused, so remove associated code. It will still be possible to restore it later from the Git history if necessary. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-03-18Merge branch 'master' of git://git.denx.de/u-boot-armTom Rini
Albert's rework of the linker scripts conflicted with Simon's making everyone use __bss_end. We also had a minor conflict over README.scrapyard being added to in mainline and enhanced in u-boot-arm/master with proper formatting. Conflicts: arch/arm/cpu/ixp/u-boot.lds arch/arm/cpu/u-boot.lds arch/arm/lib/Makefile board/actux1/u-boot.lds board/actux2/u-boot.lds board/actux3/u-boot.lds board/dvlhost/u-boot.lds board/freescale/mx31ads/u-boot.lds doc/README.scrapyard include/configs/tegra-common.h Build tested for all of ARM and run-time tested on am335x_evm. Signed-off-by: Tom Rini <trini@ti.com>
2013-03-11ppc: Remove PCIPPC2 and PCIPPC6 boardsStefan Roese
These boards seem to be unmaintained for quite some time. So lets remove support for them completely. This also cleans up some common drivers/files. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Guillaume Alexandre <guillaume.alexandre@gespac.ch> Acked-by: Wolfgang Denk <wd@denx.de>
2013-02-28ARM: ns9750dev: remove remainders of dead boardWolfgang Denk
Commit 8b710b1 started removing code for the unmaintained "ns9750dev" board; the board support is still broken, and not included anywhere in the Makefile or boards.cfg. Remove the remaining dead code. Signed-off-by: Wolfgang Denk <wd@denx.de>
2012-10-26arm: Remove support for lpc2292Marek Vasut
This stuff has been rotting in the tree for a year now. Remove it. Signed-off-by: Marek Vasut <marex@denx.de>
2012-10-16Remove lh7a40x cpu and serial driverAlbert ARIBAUD
Since commit 957731ed (ARM: remove broken "lpd7a40x" boards), lh7a40x cpu and serial driver have become unused. Remove them. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2012-09-02dm: Add twserial device documentTomáš Hlaváček
Signed-off-by: Tomas Hlavacek<tmshlvck@gmail.com>
2012-09-02dm: RTC subsystem analysis added.Tomas Hlavacek
Signed-off-by: Tomas Hlavacek <tmshlvck@gmail.com>
2012-09-02dm: Add pcmcia design documentViktor Krivak
Signed-off-by: Viktor Krivak <viktor.krivak@gmail.com>
2012-09-02dm: add PCI design documentPavel Herrmann
Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com>
2012-09-02dm: Driver model analysis document for Watchdog subsystem has been added.Tomas Hlavacek
Signed-off-by: Tomas Hlavacek <tmshlvck@gmail.com>
2012-09-02dm: Hwmon UDM subsystem analysis added.Tomas Hlavacek
Signed-off-by: Tomas Hlavacek <tmshlvck@gmail.com>
2012-09-02dm: Add POWER API transition documentViktor Krivak
Signed-off-by: Viktor Krivak <viktor.krivak@gmail.com>
2012-09-02dm: Add block device documentPavel Herrmann
Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com>
2012-09-02dm: Add SPI API transition documentViktor Krivak
Signed-off-by: Viktor Krivak <viktor.krivak@gmail.com>
2012-09-02dm: Add networking subsystem analysisMarek Vasut
Signed-off-by: Marek Vasut <marex@denx.de>
2012-09-02dm: Add MMC subsystem analysisMarek Vasut
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
2012-09-02dm: Add GPIO API transition documentViktor Křivák
Signed-off-by: Viktor Křivák <viktor.krivak@gmail.com>
2012-09-02dm: Add Driver cores design documentPavel Herrmann
Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com>
2012-09-02dm: Initial import of design documentsMarek Vasut
This patch contains UDM-design.txt, which is document containing general description of the driver model. The remaining files contains descriptions of conversion process of particular subsystems. Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
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