Commit graph

74 commits

Author SHA1 Message Date
Paul Kocialkowski
aac5450ea9 omap_hsmmc: Board-specific TWL4030 MMC power initializations
Boards using the TWL4030 regulator may not all use the LDOs the same way
(e.g. MMC2 power can be controlled by another LDO than VMMC2).
This delegates TWL4030 MMC power initializations to board-specific functions,
that may still call twl4030_power_mmc_init for the default behavior.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Tom Rini <trini@ti.com>
[trini: Fix omap3_evm warning, add twl4030.h]
Signed-off-by: Tom Rini <trini@ti.com>
2014-12-04 21:28:15 -05:00
Simon Glass
b3f4ca1135 dm: omap3: Move to driver model for GPIO and serial
Adjust the configuration for the am33xx boards, including beagleboard,
to use driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Tom Rini <trini@ti.com>
2014-10-23 19:29:07 -06:00
Alexander Kochetkov
04e2a13336 beagleboard: Remove side effects of i2c2 pullup resisters initialization code
Fix typo of commit d4e53f063d.

i2c2 pullup resisters are controlled by bit 0 of CONTROL_PROG_IO1.
It's value after reset is 0x00100001.

In order to clear bit 0, original code write 0xfffffffe to
CONTROL_PROG_IO1 and toggle almost all default values.

Original code affect following:
* disable i2c1 pullup resisters
* increase far end load setting for many modules
* setup invalid SC/LB combination

Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
CC: Tom Rini <trini@ti.com>
CC: Steve Kipisz <s-kipisz2@ti.com>
2014-10-10 09:44:43 -04:00
Masahiro Yamada
461be2f96e kconfig: remove redundant "string" type in arch and board Kconfigs
Now the types of CONFIG_SYS_{ARCH, CPU, SOC, VENDOR, BOARD, CONFIG_NAME}
are specified in arch/Kconfig.

We can delete the ones in arch and board Kconfig files.

This commit can be easily reproduced by the following command:

find . -name Kconfig -a ! -path ./arch/Kconfig | xargs sed -i -e '
/config[[:space:]]SYS_\(ARCH\|CPU\|SOC\|\VENDOR\|BOARD\|CONFIG_NAME\)/ {
    N
    s/\n[[:space:]]*string//
}
'

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-09-13 16:43:55 -04:00
Masahiro Yamada
3cfbcb58d3 omap3: kconfig: move board select menu and common settings
Becuase the board select menu in arch/arm/Kconfig is too big,
move the OMAP3 board select menu to omap3/Kconfig.

Move also common settings (CONFIG_SYS_CPU="armv7" and
CONFIG_SYS_SOC="omap3

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Tom Rini <trini@ti.com>
2014-08-30 21:21:59 -04:00
Masahiro Yamada
93d4334f7f Add board MAINTAINERS files
We have switched to Kconfig and the boards.cfg file is going to
be removed. We have to retrieve the board status and maintainers
information from it.

The MAINTAINERS format as in Linux Kernel would be nice
because we can crib the scripts/get_maintainer.pl script.

After some discussion, we chose to put a MAINTAINERS file under each
board directory, not the top-level one because we want to collect
relevant information for a board into a single place.

TODO:
Modify get_maintainer.pl to scan multiple MAINTAINERS files.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Suggested-by: Tom Rini <trini@ti.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:48:06 -04:00
Masahiro Yamada
dd84058d24 kconfig: add board Kconfig and defconfig files
This commit adds:
 - arch/${ARCH}/Kconfig
    provide a menu to select target boards
 - board/${VENDOR}/${BOARD}/Kconfig or board/${BOARD}/Kconfig
    set CONFIG macros to the appropriate values for each board
 - configs/${TARGET_BOARD}_defconfig
    default setting of each board

(This commit was automatically generated by a conversion script
based on boards.cfg)

In Linux Kernel, defconfig files are located under
arch/${ARCH}/configs/ directory.
It works in Linux Kernel since ARCH is always given from the
command line for cross compile.

But in U-Boot, ARCH is not given from the command line.
Which means we cannot know ARCH until the board configuration is done.
That is why all the "*_defconfig" files should be gathered into a
single directory ./configs/.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-07-30 08:48:01 -04:00
Nishanth Menon
548a64d845 OMAP3: beagle-xm: generate fake USB ethernet MAC address from dieid
Similar to OMAP5uEVM, PandaBoard, BeagleBoard-XM has a USB based
ethernet without MAC address embedded. So fake a MAC address following
the similar strategy used on OMAP5 and PandaBoard family.

Signed-off-by: Nishanth Menon <nm@ti.com>
2014-04-17 14:39:54 -04:00
Masahiro Yamada
1b2226e0ce Makefile: specifiy an explicite object name rather than $(BOARD).o
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-11-17 14:11:30 -05:00
Masahiro Yamada
4810400ec9 board: ti: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Tom Rini <trini@ti.com>
2013-10-31 13:26:44 -04:00
Troy Kisky
127efc4fe8 usb: ehci-hcd: add enum usb_init_type parameter to ehci_hcd_init.
This paramter will later be used to initialize OTG ports in
host or device mode.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
2013-10-20 23:46:27 +02:00
Mateusz Zalega
16297cfb2a usb: new board-specific USB init interface
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>
2013-10-20 23:42:40 +02:00
Nishanth Menon
af4d896fed beagleboard: remove RevB support for BeagleBoard Xm
As reported in http://marc.info/?l=u-boot&m=137358037827735&w=2

There is no need for the "xMB" variant, as the gpio pins used for
identification where never changed from the xMA when the newer silcon
was used for the xMB, So rename XM A revision as AB revision
and report accordingly

Reported-by: Robert Nelson <robertcnelson@gmail.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
2013-07-26 16:39:11 -04:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Tom Rini
8ce4e5f932 beagleboard: Update comment in get_board_rev()
We are able to tell the difference between xM Rev Ax/Bx and xM Rev Cx,
and have been for some time.  The comment above the function however did
not list this, so update.

Signed-off-by: Tom Rini <trini@ti.com>
2013-05-10 08:25:55 -04:00
Nikita Kiryanov
bcc6cc9b37 omap3: allow dynamic selection of gfx_format
Currently, omap3_dss_panel_config() sets gfx_format to a value that is hardcoded
in the code. This forces anyone who wants to use a different gfx_format to make
adjustments after calling omap3_dss_panel_config(). This could be avoided if the
value of gfx_format were parameterized as input for omap3_dss_panel_config().

Make gfx_format a field in struct panel_config, and update existing structs to
set this field to the value that was originally hard coded.

Cc: Wolfgang Denk <wd@denx.de>
Cc: Jeroen Hofstee <jeroen@myspectrum.nl>
Cc: Tom Rini <trini@ti.com>
Cc: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
2013-03-08 16:41:13 -05:00
Nikita Kiryanov
e3913f56a2 omap_hsmmc: add driver check for write protection
Add check for write protection in omap mmc driver.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Reviewed-by: Tom Rini <trini@ti.com>
2013-03-08 16:41:13 -05:00
Nikita Kiryanov
e874d5b001 omap_hsmmc: implement driver check for card detection
Implement driver check for card detection.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
2013-03-08 16:41:13 -05:00
robertcnelson@gmail.com
8a1f2dc081 beagle: expansion boards: add LSR COM6L adapter
http://www.lsr.com/wireless-products/com6l

The eeprom on this expansion board requires 16bit addressing.

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
2013-02-18 13:48:04 -05:00
robertcnelson@gmail.com
ff229ecf8b beagle: expansion boards: retry i2c_read with 16bit addressing
Some expansion boards now ship with at24 eeproms that need to communicate
via 16bit addressing.

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
2013-02-18 13:48:04 -05:00
Albert ARIBAUD
79f3877794 Merge branch 'u-boot-ti/master' into 'u-boot-arm/master'
This required manual merging drivers/mtd/nand/Makefile
and adding am335x_evm support for CONFIG_SPL_NAND_DRIVERS
2013-01-08 13:15:45 +01:00
Peter Barada
8c4445d266 Pass sdrc timing values through board_sdrc_timings structure
Instead of passing individual registers by value to board_get_mem_timings,
pass a board_mem_timings structure pointer for the board files to fill in.
Pass same structure pointer to write_sdrc_timings.  This saves about
90 bytes of space in SPL.

Signed-off-by: Peter Barada <peter.barada@logicpd.com>
2012-12-10 08:54:02 -07:00
Ilya Yanok
c642b151f3 omap3_beagle: add musb-new init
Add initialization for new MUSB framework.

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
2012-11-20 00:16:08 +01:00
Lucas Stach
676ae068d9 usb: ehci: rework to take advantage of new lowlevel interface
Kill off ehci-core.h
It was used to specify some static controller data. To support more than
one controller being active at any time we have to carry the controller
data ourselfes. Change the ehci interface accordingly.

NOTE: OMAP implemented the ehci stuff a bit backwards and should be fixed
to do the same thing as other platforms. But the change for now is at least
compile clean.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Reviewed-by: Marek Vasut <marex@denx.de>
2012-10-15 11:54:00 -07:00
Ilya Yanok
7ac2fe2da2 OMAP: networking support for SPL
This patch adds support for networking in SPL. Some devices are
capable of loading SPL via network so it makes sense to load the
main U-Boot binary via network too. This patch tries to use
existing network code as much as possible. Unfortunately, it depends
on environment which in turn depends on other code so SPL size
is increased significantly. No effort was done to decouple network
code and environment so far.

Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Tom Rini <trini@ti.com>
2012-10-01 10:02:14 -07:00
Peter Meerwald
2c30c18487 beagle: only call DSS code when #defined CONFIG_VIDEO_OMAP3
Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
2012-09-01 14:58:10 +02:00
Peter Meerwald
71a271c654 beagle: removed unused pr_debug #define
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
2012-09-01 14:58:10 +02:00
Peter Meerwald
fff1a57208 beagle: make get_expansion_id(), get_board_revision(), beagle_display_init() static
Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
2012-09-01 14:58:10 +02:00
Peter Meerwald
ef88e60902 beagle: add eeprom expansion board info for bct brettl4
this is for a prototyping board

vendor/product ids have been added to
http://elinux.org/BeagleBoardPinMux#List_of_Vendor_and_Device_IDs

Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
2012-07-09 22:44:32 +02:00
Jonathan Solnit
bbbc1ae921 ARM:OMAP+:MMC: Add parameters to MMC init
Add parameters to the OMAP MMC initialization function so the board can
mask host capabilities and set the maximum clock frequency.  While the
OMAP supports a certain set of MMC host capabilities, individual boards
may be more restricted and the OMAP may need to be configured to match
the board.  The PRG_SDMMC1_SPEEDCTRL bit in the OMAP3 is an example.

Signed-off-by: Jonathan Solnit <jsolnit@gmail.com>
2012-05-15 08:31:22 +02:00
Joel Fernandes
aae58b954b BeagleBoard: Remove userbutton command and use gpio command instead
Remove userbutton command and do the detection in board config file using the gpio command

Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
2012-04-16 14:47:58 +02:00
Anatolij Gustschin
3fbc6931a4 board/ti/beagle/beagle.c: Fix build warnings
Fix:
beagle.c:257:13: warning: function declaration isn't a prototype
[-Wstrict-prototypes]
beagle.c:257:13: warning: function declaration isn't a prototype
[-Wstrict-prototypes]

Also make beagle_dvi_pup() checkpatch clean, fix:
ERROR: open brace '{' following function declarations go on the
next line

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Tom Rini <trini@ti.com>
2012-03-29 08:19:29 +02:00
Simon Glass
578ac1e9ba bootstage: Make use of BOOTSTAGE_ID_RUN_OS in show_boot_progress()
This changes the number 15 as used in boot_stage_progress() to use the
new name provided for it. This is a separate patch because it touches
so many files.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2012-03-18 20:45:57 +01:00
Peter Meerwald
4258aa62fb beagle: enable DVI_PUP
this patch addresses the issue that there is no DVI output on beagleboard-xm in
u-boot; the TFP410 is not powered on, DVI_PUP needs to be set high

this is done differently on beagleboard-xm rev. B/C versus earlier boards:
beagleboard-xm B/C need to set GPIO2 of the TWL4030
earlier boards need to set GPIO170

note that the change occured somewhere inbetween beagleboard-xm rev. A2 and A3

note that beagleboard-xm rev. A and rev. B cannot be distinguished using
get_board_revision(), REVISION_XM_A/REVISION_XM_B is bogus

due to this glitch, the patch cannot work correctly on some beagleboard-xm
rev A/B boards

tested on beagleboard-xm rev. C (you should see orange color on a monitor)

note that the framebuffer is NOT yet set up, this could be done along the
lines below (for 800x480 resolution and RGB24) before calling omap3_dss_enable()

static void configure_frame_buffer() {
	writel(0x80500000, (uint *) 0x48050480); // address
	writel(0x80500000, (uint *) 0x48050484);
	writel(0x01df031f, (uint *) 0x4805048c); // size
	writel(0x00000091, (uint *) 0x480504a0); // RGB24
}

Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
2012-02-27 21:19:24 +01:00
Peter Meerwald
66327eb359 beagle: fix typos
Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
2012-02-12 10:11:32 +01:00
Govindraj.R
43b62393da ehci-omap: Clean up added ehci-omap.c
Clean up added ehci-omap.c and make it generic for re-use across
omap-soc having same ehci ip block. Also pass the modes to be configured
from board file and configure the ports accordingly. All usb layers
are not cache aligned, till then keep cache off for usb ops as ehci will use
internally dma for all usb ops.

* Add a generic common header ehci-omap.h having common ip block
  data and reg shifts.
* Rename and modify ehci-omap3 to ehci.h retain only conflicting
  sysc reg shifts remove others and move to common header file.
* pass the board data for beagle/panda accordinly to use
  ehci ports.

Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
2012-02-12 10:11:31 +01:00
Ilya Yanok
29321c0518 ehci-omap: driver for EHCI host on OMAP3
Taken from Beagle code. Tested on mcx board (AM3517-based).

Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Tested-by: Stefano Babic <sbabic@denx.de>
2012-02-12 10:11:30 +01:00
robertcnelson@gmail.com
223b8aa42c Beagleboard: Correct memory size on rev C4
The logic for the rev C4 boards was missing one of the cases
(variant with Micron NAND and 2x128MB).

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
2012-02-12 10:11:23 +01:00
Peter Meerwald
6cce55047c beagle: add eeprom expansion board info for bct brettl3
this is for a prototyping board

vendor/product ids have been added to
http://elinux.org/BeagleBoardPinMux#List_of_Vendor_and_Device_IDs
2012-01-16 08:40:10 +01:00
Tom Rini
75c57a3570 OMAP3: Add SPL support to Beagleboard
This introduces 200MHz Micron parts timing information based on x-loader
to <asm/arch-omap3/mem.h> and Numonyx MCFG calculation.  The memory init
logic is also based on what x-loader does in these cases.  Note that
while previously u-boot would be flashed in with SW ECC in this case it
now must be flashed with HW ECC.  We also change CONFIG_SYS_TEXT_BASE to
0x80100000.

Cc: Dirk Behme <dirk.behme@gmail.com>
Beagleboard rev C5, xM rev A:
Tested-by: Tom Rini <trini@ti.com>
Beagleboard xM rev C:
Tested-by: Matt Ranostay <mranostay@gmail.com>
Beagleboard rev B7, C2, xM rev B:
Tested-by: Matt Porter <mporter@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
2011-12-06 23:59:38 +01:00
Joe Hershberger
b5db0a068a omap: Don't use gpio_free to change direction to input
gpio_free() should not have the side effect of setting the line to input since this prevents the gpio command from being able to set a line as output.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Joe Hershberger <joe.hershberger@gmail.com>
Cc: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-27 21:56:35 +02:00
Mike Frysinger
464c79207c punt unused clean/distclean targets
The top level Makefile does not do any recursion into subdirs when
cleaning, so these clean/distclean targets in random arch/board dirs
never get used.  Punt them all.

MAKEALL didn't report any errors related to this that I could see.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-10-15 22:20:36 +02:00
Dirk Behme
513e6fd3eb OMAP3: beagle: Fix build warning in beagle.c
Fix build warning

beagle.c:532: warning: initialization from incompatible pointer type

Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
CC: Jason Kridner <jkridner@beagleboard.org>
CC: Koen Kooi <koen@dominion.thruhere.net>
CC: Joel A Fernandes <agnel.joel@gmail.com>
Cc: Greg Turner <gregturner@ti.com>
CC: Sandeep Paulraj <s-paulraj@ti.com>
Acked-by: Jason Kridner <jkridner@beagleboard.org>
2011-09-22 23:02:08 +02:00
Jason Kridner
2d3be7c456 led: remove camel casing of led identifiers globally
Result of running the following command to address Wolfgang's
comment about camel case:

for file in `find . | grep '\.[chS]$'`; do perl -i -pe
's/(green|yellow|red|blue)_LED_(on|off)/$1_led_$2/g' $file; done

Discussion:
http://patchwork.ozlabs.org/patch/84988/

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-13 08:30:52 +02:00
Sanjeev Premi
84c3b63129 omap: gpio: Adapt board files to use generic API
This patch contains updates the sources in the board files
to use the generic API.

Signed-off-by: Sanjeev Premi <premi@ti.com>
2011-09-13 08:25:15 +02:00
Christian Spielberger
38a77c3adb beagleboard: enable HUB power on all variants of the BeagleBoard
Changes made by Jason Kridner with inputs from Eric Benard to special case xM Rev A and xM Rev B

Relevant discussions:
http://www.mail-archive.com/u-boot@lists.denx.de/msg59361.html
http://www.mail-archive.com/u-boot@lists.denx.de/msg59589.html

Signed-off-by: Joel A Fernandes <joelagnel@ti.com>
Cc: Eric Benard <eric@eukrea.com>
Cc: Christian Spielberger <c.spielberger@bct-electronic.com>
Cc: Jason Kridner <jdk@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-04 11:36:22 +02:00
Joel A Fernandes
b8bc8973a1 led: Remove state-saving of led for toggle functionality and add toggle option to led command
* Read the led output state from GPIO instead saving state in memory when it is [re]set
* Added a toggle option to the led command

Previous discussion:
http://lists.denx.de/pipermail/u-boot/2011-May/093068.html

Changes since v1:
Fixed checkpatch errors

Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-04 11:36:22 +02:00
Jason Kridner
f87824efdd BeagleBoard: fix LED 0/1 in driver
Fixed USR0/USR1 to be LED 0/1 respectively

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-04 11:36:22 +02:00
Jason Kridner
3f16ab9102 BeagleBoard: Configure DVI/S-video
Based on patches from Syed Mohammed Khasim (khasim@ti.com).

Configures the output of the BeagleBoard DVI to be orange.
Configures the output of the BeagleBoard S-Video to be a colorbar.

Changed display_init to beagle_display_init as suggested by Igor Grinberg:
http://www.mail-archive.com/u-boot@lists.denx.de/msg51446.html

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-04 11:36:20 +02:00
Jason Kridner
f835ea7158 BeagleBoard: Added userbutton command
Based on commit f1099c7c43caf5bac3bf6a65aa266fade4747072
    Author: Greg Turner <gregturner@ti.com>
    Date:   Tue May 25 09:19:06 2010 -0500

    New u-boot command for status of USER button on BeagleBoard-xM

         Modified bootcmd to check the staus at boot time and set
	 filename of the boot script.

* Moved to a BeagleBoard specific file.
* Removed changes to default boot command from adding userbutton
  command.
* Made to handle pre-xM boards.
* Flipped polarity of the return value to avoid confusion.  Success (0)
  is when the button is pressed.  Failure (1) is when the button is NOT
  pressed.
* Used latest revision getting function.
* Used latest macros for board revision.
* Added xM-C revision definition (optional, since it was default)
* updated default configuration with UserButton functionality
  * Added a separate bootenv variable to load a user defined .txt file
  * Added an example, showing how a different environment file can be loaded with
    the user button pressed

Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Cc: Greg Turner <gregturner@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-04 11:36:20 +02:00