Commit graph

63 commits

Author SHA1 Message Date
Simon Glass
00f3732752 tegra: video: Support serial output resource (SOR) on tegra124
The SOR is required for talking to eDP LCD panels. Add a driver for this
which will be used by the DisplayPort driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-05-13 09:24:11 -07:00
Simon Glass
51f2c99e14 dm: video: Add a uclass for display port
eDP (Embedded DisplayPort) is a standard widely used in laptops to drive
LCD panels. Add a uclass for this which supports a few simple operations.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-05-13 09:24:10 -07:00
Heiko Schocher
fc1a79d95e video, lg4573: add support for the lg4573 display
Signed-off-by: Heiko Schocher <hs@denx.de>
2015-04-20 09:47:28 +02:00
Masahiro Yamada
41fbbbbc71 ARM: remove jadecpu board support
This is still a non-generic board.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Matthias Weisser <weisserm@arcor.de>
Acked-by: Marek Vasut <marex@denx.de>
2015-02-24 17:06:51 -05:00
Simon Glass
edb8b7a66b x86: Drop the x86_fb driver
Now that we have a full VESA driver we may as well use that. We need to
support the VESA layer being set up by early start-up code or by
running a VGA ROM.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-01-23 17:24:53 -07:00
Simon Glass
6b1ba98450 x86: Add a VESA video driver
Add a driver intended to cope with any VESA-compatible x86 graphics
adapter. It will not support ROMs which use OpenFirmware (Forth) since
there is no support for that in U-Boot. This means that MAC OS cards
will not work.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-01-23 17:24:16 -07:00
Hans de Goede
a5464f2bd2 video: Add support for Hitachi tx18d42vm LVDS LCD panels
Add support for Hitachi tx18d42vm LVDS LCD panels, these panels have a
lcd controller which needs to be initialized over SPI, once that is
done they work like a regular LVDS panel.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
2015-01-22 20:44:33 +01:00
Siarhei Siamashka
b8329acf98 video: Add support for SSD2828 (parallel LCD to MIPI bridge)
SSD2828 can take pixel data coming from a parallel LCD interface
and translate it on the fly into MIPI DSI interface for driving
a MIPI compatible TFT display. SSD2828 is configured over SPI
interface, which may or may not have MISO pin wired up on some
hardware. So a write-only SPI mode also has to be supported.

The SSD2828 support code is implemented as a utility function
and needs to be called from real display drivers, which are
responsible for driving parallel LCD hardware in front of the
video pipeline. The usage instructions are provided as comments
in the header file.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-01-22 12:34:56 +01:00
Hans de Goede
be8ec63306 sunxi: video: Use video-mode/-timing from videomodes
Switch from fb_videomode to ctfb_res_modes and use the predefined videotimings
from videomodes.c, rather then defining our own.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Anatolij Gustschin <agust@denx.de>
2015-01-14 14:56:38 +01:00
Tom Rini
f4e7e2d121 Merge git://git.denx.de/u-boot-x86 2014-12-01 15:24:07 -05:00
Simon Glass
998110241b x86: video: Add video driver for bare x86 boards
Add a very simple driver which uses vesa to discover the video mode and
then provides a frame buffer for use by U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
2014-11-25 07:11:16 -07:00
Luc Verhaegen
7f2c521f90 sunxi: video: Add cfb console driver for sunxi
This adds a fixed mode hdmi driver for the sunxi platform. The fixed
mode is a relatively safe 1024x768, more complete EDID handling is
currently not provided. Only HDMI is supported today.

This code is enabled when HPD detects an attached monitor.

Current config is such that 8MB is shaved off at the top of the RAM.
This avoids several memory handling issues, most significant is the fact
that on linux on ARM you are not allowed to remap known RAM as IO. A
clued in display driver will be able to recycle this reserved RAM in
future though.

cfbconsole was chosen as it provides the most important functionality: a
working u-boot console, allowing for the debugging of certain issues
without the need for a UART.

Signed-off-by: Luc Verhaegen <libv@skynet.be>
[hdegoede@redhat.com: Major cleanups and some small bugfixes]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-11-25 13:38:46 +01:00
Tom Rini
114cc4290b Merge branch 'master' of git://git.denx.de/u-boot-arm 2014-09-12 11:27:46 -04:00
Wang Huan
327def5060 video: dcu: Add DCU driver support
This patch is to add DCU driver support. DCU also named
2D-ACE(Two Dimensional Animation and Compositing Engine)
is a system master that fetches graphics stored in internal
or external memory and displays them on a TFT LCD panel.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
2014-09-08 10:30:35 -07:00
Vadim Bendebury
9e8f664ecb video: Add driver for Parade PS8625 dP to LVDS bridge
The initialization table comes from the "Illustration of I2C command
for initialing PS8625" document supplied by Parade.

Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2014-09-05 20:37:07 +09:00
Hannes Petermaier
3c5fabd139 video: Add support for TI's AM335x LCD-Controller
- Adds support for a minimal framebuffer driver of TI's AM335x SoC
  to be compatible with Wolfgang Denk's LCD-Framework (CONFIG_LCD,
  common/lcd.c)

Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>
2014-08-10 15:34:27 +02:00
Thomas Diener
d1dacf7766 video: Add support for imx25 lcd controller
This patch adds support for the imx25 lcd display controller.

Signed-off-by: Thomas Diener <dietho@gmx.de>
Acked-by: Anatolij Gustschin <agust@denx.de>
2014-05-09 15:10:53 +02:00
Simon Glass
7d95f2a329 sandbox: Add LCD driver
Add a simple LCD driver which uses SDL to display the image. We update the
image regularly, while still providing for reasonable performance.

Adjust the common lcd code to support sandbox.

For command-line runs we do not want the LCD to be displayed, so add a
--show_lcd option to enable it.

Tested-by: Che-Liang Chiou <clchiou@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:49 -06:00
Nikita Kiryanov
f1a74918e1 lcd: add DataImage SCF0403x LCD panel support
Add SPI-based driver for DataImage SCF0403852GGU04 and SCF0403526GGU20
LCD panels.

Cc: Tom Rini <trini@ti.com>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2013-11-12 10:08:48 +01:00
Masahiro Yamada
710f1d3d5f drivers: convert makefiles to Kbuild style
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-10-31 13:26:01 -04:00
Albert ARIBAUD
e62d5fb0da Merge branch 'u-boot-ti/master' into 'u-boot-arm/master' 2013-09-04 14:06:56 +02:00
Heiko Schocher
b26354cfd5 video: add formike lcd panel init
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Tom Rini <trini@ti.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
2013-08-28 11:44:59 -04:00
Hyungwon Hwang
d39c21f235 video: add L5F31188 TFT-LCD panel driver
This is u-boot driver for L5F31188 panel.
I tested it in the board based on MIPI DSI with EXYNOS4 series, and it worked well.

Changes in V2:
	- Replaced license header by SPDX-License-Identifier.

Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
Signed-off-by: Donghwa Lee <dw09.lee@samsung.com>
[agust: sort Makefile entry alphabetically]
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2013-08-10 09:31:04 +02:00
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
Marek Vasut
fb8ddc2452 arm: mxs: Add MXS LCDIF driver
Add basic LCD driver for i.MX233 and i.MX28. This driver allows framebuffer
console and framebuffer logo.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
Acked-by: Anatolij Gustschin <agust@denx.de>
2013-05-06 17:40:22 +02:00
Anatolij Gustschin
d0f34f10f1 Merge branch 'for-v2013.04'
Conflicts:
	drivers/video/Makefile

Signed-off-by: Anatolij Gustschin <agust@denx.de>
2013-03-29 13:54:10 +01:00
Jeroen Hofstee
0698095af6 lcd, pxafb: move the pxafb to drivers/video
Since the lcd code was compiled unconditionally for pxa also add
CONFIG_PXA_LCD to the boards using this framebuffer. Since
driver/video contains video and lcd drivers, add lcd to the name
to make clear it belongs to common/lcd.c.

cc: Anatolij Gustschin <agust@denx.de>
cc: Cliff Brake <cliff.brake@gmail.com>
cc: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2013-03-21 09:38:21 +01:00
Jeroen Hofstee
59155f4c50 lcd, mpc8xx: move the mpc8xx driver to drivers/video
Since the lcd code was compiled unconditionally in arch also
add CONFIG_MPC8XX_LCD to the boards using this driver.

cc: Anatolij Gustschin <agust@denx.de>
cc: Wolfgang Denk <wd@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2013-03-21 09:17:39 +01:00
Jeroen Hofstee
7cdbd29d1f lcd, amba: remove this driver since it is not used
Since CONFIG_VIDEO_AMBA is not set by any board, it does not seem
to be used, so remove it since there is no way to (compile) test it.

cc: Alessandro Rubini <rubini@unipv.it>
cc: Anatolij Gustschin <agust@denx.de>
Acked-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2013-03-21 09:12:31 +01:00
Stephen Warren
6be3c9fca2 video: add a driver for the bcm2835
The firmware running on the bcm2835 SoC's VideoCore CPU manages the
display controller. Add a simple "LCD" driver that communicates with the
firmware using the property mailbox protocol. This configures the
display and frame-buffer to match whatever physical resolution the
firmware chosen when booting, which is typically the native resolution
of the attached display device, presumably unless otherwise specified
in config.txt on the boot media.

Enable this driver in the Raspberry Pi board configuration.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
2013-03-20 15:30:00 +01:00
Minkyu Kang
2c601c7208 Merge branch 'master' of git://git.denx.de/u-boot into resolve
Conflicts:
	README
	board/samsung/universal_c210/universal.c
	drivers/misc/Makefile
	drivers/power/power_fsl.c
	include/configs/mx35pdk.h
	include/configs/mx53loco.h
	include/configs/seaboard.h
2012-12-10 14:13:27 +09:00
Stefan Reinauer
17c40ad963 x86: video: Add coreboot framebuffer support
Add a basic driver for the coreboot framebuffer.

Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
2012-11-30 13:44:04 -08:00
Simon Glass
0be8f203f6 tegra: Add LCD driver
This driver supports driving a single LCD and providing a U-Boot console
on it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-11-19 08:15:37 -07:00
Piotr Wilczek
eed2974218 drivers: video: Add ld9040 video driver
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
CC: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2012-11-15 21:08:19 +09:00
Donghwa Lee
6fff52b93a video: support exynos pwm backlight driver
This patch support exynos pwm backlight driver. It can control backlight
power and brightness by using pwm.

Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2012-09-01 14:58:24 +02:00
Donghwa Lee
d2a6982f9b video: support exynos display port drivers
This patch set supports exynos display port drivers.

DisplayPort is an industry standard device to accommodate the increasing board
adoption of digital display technology within the PC and consumer electronics.
The interface supports internal chip-to-chip and external box-to-box digital
display connections.

Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2012-09-01 14:58:24 +02:00
Fabio Estevam
695af9abc6 video: Rename CONFIG_VIDEO_MX5
Rename CONFIG_VIDEO_MX5 as this driver can also be used on mx6.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
2012-07-10 11:35:38 +02:00
Bo Shen
f6b690e65c video: atmel/lcd: add LCD driver for new Atmel SoC
The new Atmel SoC (at91sam9x5 series and at91sam9n12) add a totally
different LCD controller. Add this new driver to support it.

Using CONFIG_ATMEL_HLCD (distinguish with CONFIG_ATMEL_LCD) to enable
this in board configuration file.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2012-06-05 11:19:02 +02:00
Jeroen Hofstee
d9c13aac14 omap3_dss: add optional framebuffer
The beagle board uses the background color to show an orange screen during
startup. This patch adds the ability to add a frame buffer, with the
intention not to break the beagle board use case (I don't have one).
videomodes.c is not used. Scrolling depends on this patch:

http://patchwork.ozlabs.org/patch/155662/

cc: trini@ti.com
cc: s-paulraj@ti.com
cc: khasim@ti.com
Signed-off-by: Jeroen Hofstee <jhofstee@victronenergy.com>
2012-05-25 15:34:18 +02:00
Donghwa Lee
bba09e9f56 LCD: support S6E8AX0 amoled driver based on EXYNOS MIPI DSI
This patch support S6E8AX0 amoled driver based on EXYNOS MIPI DSI interface.

Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
2012-05-15 08:31:30 +02:00
Donghwa Lee
2c7396cb1a EXYNOS: support EXYNOS MIPI DSI interface driver.
EXYNOS SoC platform has MIPI-DSI controller and MIPI-DSI
based LCD Panel could be used with it. This patch supports MIPI-DSI driver
based Samsung SoC chip.

LCD panel driver based MIPI-DSI should be registered to MIPI-DSI driver at
board file and LCD panel driver specific function registered to mipi_dsim_ddi
structure at lcd panel init function called system init.
In the MIPI-DSI driver, find lcd panel driver by using registered
lcd panel name, and then initialize lcd panel driver.

Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
2012-05-15 08:31:30 +02:00
Donghwa Lee
6d4339f622 EXYNOS: support EXYNOS framebuffer and FIMD display drivers.
This patch support EXYNOS FB and FIMD display drivers.

Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
2012-05-15 08:31:29 +02:00
Stefano Babic
134028682f VIDEO: davinci: add framebuffer to da8xx
The patch is a port from the framebuffer driver
of the Linux driver drivers/video/da8xx-fb.c, used
on davinci da8xx and OMAP-L138 boards.

As base for the port, the following commit (last changes
for this driver at the moment in the Linux kernel tree)
was taken:

commit 1db41e032d563eb47deab40dc5595be306b143ba
Author: axel lin <axel.lin@gmail.com>
Date:   Tue Feb 22 01:52:42 2011 +0000

    video: da8xx-fb: fix section mismatch warning

    Signed-off-by: Axel Lin <axel.lin@gmail.com>
    Signed-off-by: Paul Mundt <lethal@linux-sh.org>

Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Sandeep Paulraj <s-paulraj@ti.com>
Cc: Anatolij Gustschin <agust@denx.de>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-11-03 22:56:26 +01:00
Helmut Raiger
62a22dca32 video: Moving mx3fb.c to CONFIG_VIDEO
mx3fb.c was based on CONFIG_LCD and is moved by this patch to
CONFIG_VIDEO, which has greater freedom in selecting videomodes
even at runtime.

This renders the accumulating list of display defines
(CONFIG_DISPLAY_VBEST..., CONFIG_DISPLAY_C057...) obsolete as
these may be setup through env variables:

uboot> setenv mydisplay 'video=ctfb240,y:320,depth:16,mode:0,pclk:185925,
	le:9,ri:17,up:7,lo:10,hs:1,vs:1,sync:100663296,vmode:0'
uboot> setenv videomode ${mydisplay}

This commit also fixes the board config files for qong and
imx31_phycore boards as needed. The videomode settings of
previously supported displays are added to CONFIG_EXTRA_ENV_SETTINGS
now. CONFIG_SYS_MALLOC_LEN for imx31_phycore board is increased
to make the frame buffer allocation working with the changed
driver.

Signed-off-by: Helmut Raiger <helmut.raiger@hale.at>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
2011-10-13 10:41:36 +02:00
Wolfgang Denk
712f4d1f34 drivers/video/Makefile: include object files only once
Use "$(sort $(COBJS-y))" to prevent multiple inclusion of the same
object files.

Also sort driver list.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-09-05 09:19:08 +02:00
Kumar Gala
9d75de0951 video: Fix build error with global inclusion of videomodes
The following commit:

commit de701d1183
Author: Syed Mohammed Khasim <khasim@ti.com>
Date:   Tue Apr 19 14:00:34 2011 -0500

   OMAP3: Add DSS driver for OMAP3

Added videomodes to the object list w/o any protection.  This causes
build issues like:

videomodes.o:(.rodata.res_mode_init+0x0): multiple definition of `res_mode_init'
videomodes.o:(.rodata.res_mode_init+0x0): first defined here
videomodes.o: In function `video_get_params':
/local/home/galak/git/u-boot/drivers/video/videomodes.c:160: multiple definition of `video_get_params'
videomodes.o:/local/home/galak/git/u-boot/drivers/video/videomodes.c:160: first defined here
videomodes.o: In function `video_get_video_mode':
/local/home/galak/git/u-boot/drivers/video/videomodes.c:229: multiple definition of `video_get_video_mode'
videomodes.o:/local/home/galak/git/u-boot/drivers/video/videomodes.c:229: first defined here
videomodes.o:(.rodata.vesa_modes+0x0): multiple definition of `vesa_modes'
videomodes.o:(.rodata.vesa_modes+0x0): first defined here
make[1]: *** [libvideo.o] Error 1

Remove the unconditional inclusion and move to adding to
CONFIG_VIDEO_OMAP3 case.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-09-05 09:15:39 +02:00
Syed Mohammed Khasim
de701d1183 OMAP3: Add DSS driver for OMAP3
* Supports dynamic panel configuration
* Supports dynamic tv standard selection
* Adds support for DSS register access through generic APIs
* Incorporated DSS register access using structures.
* DSS makefile update

Previous discussions are here:
http://www.mail-archive.com/u-boot@lists.denx.de/msg27150.html

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-09-04 11:36:22 +02:00
Timur Tabi
ba8e76bd49 powerpc: use 'video-mode' environment variable to configure DIU
Use the 'video-mode' environment variable (for Freescale chips that have a
DIU display controller) to designate the full video configuration.  Previously,
the DIU driver used the 'monitor' variable, and it was used only to determine
the output video port.

The old definition of the "monitor" environment variable only determines
which video port to use for output.  This variable was set to a number (0,
1, or sometimes 2) to specify a DVI, LVDS, or Dual-LVDS port.  The
resolution was hard-coded into board-specific code.  The Linux command-line
arguments needed to be hard-coded to the proper video definition string.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2011-04-28 21:31:16 +02:00
Anatolij Gustschin
14f88c43fc video: move fsl_diu_fb driver to drivers/video
Since the driver is used not only on Freescale boards,
we move it to a common place for video drivers as
suggested by Wolfgang. The patch also cleans up the
top level Makefile.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
2010-12-01 20:48:13 +01:00
Sebastien Carlier
6d8962e814 Switch from archive libraries to partial linking
Before this commit, weak symbols were not overridden by non-weak symbols
found in archive libraries when linking with recent versions of
binutils.  As stated in the System V ABI, "the link editor does not
extract archive members to resolve undefined weak symbols".

This commit changes all Makefiles to use partial linking (ld -r) instead
of creating library archives, which forces all symbols to participate in
linking, allowing non-weak symbols to override weak symbols as intended.
This approach is also used by Linux, from which the gmake function
cmd_link_o_target (defined in config.mk and used in all Makefiles) is
inspired.

The name of each former library archive is preserved except for
extensions which change from ".a" to ".o".  This commit updates
references accordingly where needed, in particular in some linker
scripts.

This commit reveals board configurations that exclude some features but
include source files that depend these disabled features in the build,
resulting in undefined symbols.  Known such cases include:
- disabling CMD_NET but not CMD_NFS;
- enabling CONFIG_OF_LIBFDT but not CONFIG_QE.

Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
2010-11-17 21:02:18 +01:00