Stephen Warren [Mon, 15 Feb 2016 17:34:04 +0000 (10:34 -0700)]
ARM: tegra: enable USB device mode port on Dalmore
This allows U-Boot to expose UMS and DFU protocols on this port in device
mode, or to act as a USB host on the port, using an "OTG" (micro-B to
female A host) cable.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Stephen Warren [Mon, 15 Feb 2016 17:34:03 +0000 (10:34 -0700)]
ARM: tegra: don't set CONFIG_USB_MAX_CONTROLLER_COUNT
This option is no longer used now that DM_USB is enabled.
Fixes:
534f9d3feffd ("dm: tegra: usb: Move USB to driver model")
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Wed, 17 Feb 2016 01:09:19 +0000 (18:09 -0700)]
video: tegra: Correct a Kconfig warning with VIDCONSOLE_AS_LCD
This new feature causes a Kconfig warning on boards without a display
enabled. Fix this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:38:02 +0000 (16:38 -0700)]
tegra: video: Clean up the old LCD/PWM driver code
Remove the old PWM code. Remove calls to CONFIG_LCD functions now that we
are using driver model for video.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:38:01 +0000 (16:38 -0700)]
tegra: video: Move LCD driver to use the DM PWM driver
Use the driver-model PWM driver in preference to the old code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:38:00 +0000 (16:38 -0700)]
tegra: Convert CONFIG_PWM_TEGRA to Kconfig
Move this option to Kconfig and clean up the header files. Adjust the only
user (the LCD driver) to work with the new driver.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:59 +0000 (16:37 -0700)]
tegra: video: Move all fdt-decoding into a single function
Join the two functions which decode the device tree and put them in the
ofdata_to_platdata() method.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:58 +0000 (16:37 -0700)]
tegra: video: Move LCD enums into the driver
There is no need to have these in a separate file as they are not
referenced from anywhere else.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:57 +0000 (16:37 -0700)]
tegra: video: Remove the static variables
We can move the static variables into the driver-private data.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:56 +0000 (16:37 -0700)]
tegra: video: Convert tegra20 LCD driver to driver model
Move this driver over to use driver model. This involves rearranging the
code somewhat. The effect is that everything is run from the probe() method.
Boards which use this are fixed up, but only seaboard is tested.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:55 +0000 (16:37 -0700)]
tegra: video: Merge the two config structures together
We have a structure for the display panel and another for the controller.
There is some overlap between them. Merge them to simplify the driver.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:54 +0000 (16:37 -0700)]
tegra: video: Move the check for CONFIG_OF_CONTROL to Kconfig
We can check this in Kconfig now.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:53 +0000 (16:37 -0700)]
tegra: video: Merge the display driver into one file
At present we have code in arch/arm and code in drivers/video. Move it all
into drivers/video since it is a display driver and our current approach is
to put all driver code in drivers/.
Make a few functions static now that they are not used outside the file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:52 +0000 (16:37 -0700)]
tegra: dts: Sync tegra20.dtsi with Linux v4.4
This file has changed quite a bit since it was set up. Sync it back with
Linux v4.4. Adjust the users slightly to cope with the changes:
- the host1x node is now called host1x@
50000000
- we need a clocks node to provide the clk32k_in phandle
- active usb nodes need status = "okay"
- active i2c nodes need status = "okay"
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:51 +0000 (16:37 -0700)]
tegra: video: Rename CONFIG_VIDEO_TEGRA to CONFIG_VIDEO_TEGRA20
This option refers only to the tegra20 video driver, so name it as such
to avoid confusion with tegra124.
Also move this option to Kconfig.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:50 +0000 (16:37 -0700)]
tegra: nyan-big: Move the LCD driver to driver model
Adjust the driver to use driver model. The SOR becomes a bridge device. We
use the normal simple_panel driver to handle the display itself. We also
need to enable some options such as regulators, PWMs and DM_VIDEO itself.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:49 +0000 (16:37 -0700)]
tegra: Allow CONFIG_DM_VIDEO to be used as well as CONFIG_LCD
While we transition to using driver model for video, we need to support both
options.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:48 +0000 (16:37 -0700)]
tegra: Allow driver model to be used for the PWM
We can skip this manual init when using driver model for the PWM.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:47 +0000 (16:37 -0700)]
tegra: lcd: Merge tegra124-lcd.c into display.c
There isn't a lot of benefit of have two separate files. With driver model
the code needs to be in the same driver, so it's better to have it in the
same file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:46 +0000 (16:37 -0700)]
tegra: pwm: Add a driver for the tegra PWM
This PWM supports four channels. The driver always uses the 32KHz clock,
and adjusts the duty cycle accordingly.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:45 +0000 (16:37 -0700)]
tegra: gpio: Show the GPIO value for outputs
The tegra GPIO controller has two ways of reading the value of a GPIO. It
can supply the 'input' value (which is the value read from the pin) and the
'output' value (which is the value being driven from the pin. With a GPIO
set to output mode, the 'input' value is always low which is not very
useful.
This has the unfortunate result that setting a GPIO high still leaves it
showing as low in the 'gpio status' command.
Adjust the driver to check which direction the GPIO is set to, then read
the value from the appropriate register: 'input' for input GPIOs, 'output'
for output GPIOs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:44 +0000 (16:37 -0700)]
tegra: dts: Sync up nyan-big files with Linux
Sync up these files with Linux v4.4. Some differences remain, principally
that the addresses are still 32-bit in U-Boot.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:43 +0000 (16:37 -0700)]
tegra: dts: Sync up the tegra124 device tree files with Linux
Sync up these files with Linux v4.4.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:42 +0000 (16:37 -0700)]
tegra: mmc: Fix comments in the MMC driver init
Fix the SoC names in two comments.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:41 +0000 (16:37 -0700)]
dm: video: Flush the cache after a puts()
This helps keep the display consistent. puts() is used when printing the
prompt, so is a useful way to make sure the current display contents is
visible.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Simon Glass [Sat, 30 Jan 2016 23:37:40 +0000 (16:37 -0700)]
tegra: keyboard: Fix the init order
We need to add the base tables before adding the function tables. Fix the
init order so the keyboard scans keys correctly.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Tom Rini [Mon, 15 Feb 2016 21:44:30 +0000 (21:44 +0000)]
Prepare v2016.03-rc2
Signed-off-by: Tom Rini <trini@konsulko.com>
Stephen Warren [Thu, 11 Feb 2016 18:46:12 +0000 (11:46 -0700)]
test/py: put "Starting U-Boot" into separate log section
The initial boot of U-Boot happens within the context of the first test
that needs to access the U-Boot console when there is no existing
connection. This keeps all activity nestled within test execution, which
fits well into the pytest model. However, this mingles the U-Boot startup
logs with the execution of some test(s), which hides find the boundary
between the two.
To solve this, wrap the "Starting U-Boot" logic into a separate log
section. If the user wishes, they can simply collapse this log section
when viewing the HTML log, to concentrate purely on the test's own
interaction.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Stephen Warren [Wed, 10 Feb 2016 23:54:37 +0000 (16:54 -0700)]
test/py: handle exceptions in console creation
u_boot_console.exec_attach.get_spawn() performs two steps:
1) Spawn a process to communicate with the serial console.
2) Reset the board so that U-Boot starts running from scratch.
Currently, if an exception happens in step (2), no cleanup is performed on
the process created in step (1). That process stays running and may e.g.
hold serial port locks, or simply continue to read data from the serial
port, thus preventing it from reaching any other process that attempts to
read from the same serial port later. While there is error cleanup code in
u_boot_console_base.ensure_spawned(), this is not triggered since the
exception prevents assignment to self.p there, and hence the exception
handler has no object to operate upon in cleanup_spawn().
Solve this by enhancing u_boot_console.exec_attach.get_spawn() to clean
up any objects it has created.
In theory, u_boot_spawn.Spawn's constructor has a similar issue, so fix
this too.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Stephen Warren [Wed, 10 Feb 2016 20:47:37 +0000 (13:47 -0700)]
test/py: print summary in test order
Use lists rather than sets to record the status of tests. This causes
the test summary in the HTML file to be generated in the same order as
the tests are (or would have been) run. This makes it easier to locate
the first failed test. The log for this test might have interesting
first clues re: interaction with the environment (e.g. hardware flashing,
serial console, ...) and may help tracking down external issues.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Stephen Warren [Wed, 10 Feb 2016 19:39:30 +0000 (12:39 -0700)]
test/py: fix CONFIG_SPL test
The Python ini file parser that's used to parse .config converts all keys
to lower-case. Hence, all queries against the results must use lower-case.
Fix u_boot_console.ensure_spawned() to test CONFIG_SPL correctly, or the
connection will fail for boards that have SPL.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Stephen Warren [Tue, 9 Feb 2016 01:23:35 +0000 (18:23 -0700)]
Enable test/py for sandbox in Travis CI
This provides runtime test coverage in Travis, in addition to the existing
build coverage.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Roger Meier <r.meier@siemens.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Stephen Warren [Tue, 9 Feb 2016 01:23:34 +0000 (18:23 -0700)]
test/py: don't import pexpect
The code replaced pexpect with custom code long ago. Don't import the
unused module so it doesn't need to be installed.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Stephen Warren [Mon, 8 Feb 2016 21:49:02 +0000 (14:49 -0700)]
test/py: add docs for gdbserver and pytest options
Add documentation describing the new --gdbserver feature, and some common
pytest options.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Stephen Warren [Mon, 8 Feb 2016 21:44:16 +0000 (14:44 -0700)]
test/py: run all "ut" subtests
Invoke each "ut"-based unit test as a separate pytest.
Now that the DM unit test runs under test/py, remove the manual shell
script that invokes it.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org> # v2, on sandbox
Stephen Warren [Mon, 8 Feb 2016 21:44:15 +0000 (14:44 -0700)]
Makefile: generate symbol list from u-boot
This information may be useful for both debugging, and processes that want
to perform simple forms of introspection on the U-Boot binary, such as
determining the set of "ut" subtests that are compiled in.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Simon Glass [Sun, 14 Feb 2016 23:28:59 +0000 (16:28 -0700)]
gpio: Correct handling of 'gpio status'
This is broken - we need to look at the first two characters to distinguish
'gpio status' from 'gpio set'.
Fixes:
0ffe6ab5 (gpio: Allow 's' as an abbreviation for 'status')
Reported-by: Soeren Moch <smoch@web.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Soeren Moch <smoch@web.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Lubomir Rintel [Sun, 14 Feb 2016 19:13:24 +0000 (20:13 +0100)]
tools: fix env_flags build
$ make tools-all
...
In file included from tools/env/env_flags.c:1:0:
tools/env/../../common/env_flags.c: In function
‘env_flags_parse_varaccess_from_binflags’:
tools/env/../../common/env_flags.c:156:18: warning: implicit declaration
of function ‘ARRAY_SIZE’ [-Wimplicit-function-declaration]
for (i = 0; i < ARRAY_SIZE(env_flags_varaccess_mask); i++)
^
Seems like the other utilities just add a copy of ARRAY_SIZE since
there's nowhere to include it from (tools/imagetool.h,
tools/mxsimage.h). Let's do the same here.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Lubomir Rintel [Sun, 14 Feb 2016 18:23:24 +0000 (19:23 +0100)]
ARM: rpi: set initrd_high
The kernel gets much too sad when the ramdisk is loaded too high into the 1GiB
of memory on Raspberry Pi 2:
## Flattened Device Tree blob at
00000100
Booting using the fdt blob at 0x000100
Loading Ramdisk to
39c14000, end
3ab45067 ... OK
Using Device Tree in place at
00000100, end
000045ea
...
[ 0.599346] Unpacking initramfs...
[ 0.602924] Unable to handle kernel paging request at virtual address
f9c14000
Placement of the device tree was fixed in
89ca1000 (ARM: rpi: set fdt_high
in the default environment).
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Stephen Warren [Wed, 10 Feb 2016 22:16:19 +0000 (15:16 -0700)]
Makefile: remove BUILD_TAG from KBUILD_CFLAGS
If BUILD_TAG is part of KBUILD_CFLAGS, then any time the value changes,
all files get rebuilt. In a continuous integration environment, the value
will change every build. This wastes time, assuming that incremental
builds would otherwise occur.
To solve this, remove BUILD_TAG from KBUILD_CFLAGS and add it to CFLAGS
for just the one file that uses it. This does have the disadvantage that
if any other files want to use the flag, we'll need to duplicate this
custom CFLAGS setup logic. However, it seems unlikely we'll need this.
An alternative would be to add BUILD_TAG to the "local version" and remove
the special case code from display_options.c. However, that would affect
the format of the U-Boot signon message, which may negatively affect
people looking for specific data there. The approach of using
file-specific CFLAGS was suggested by Masahiro Yamada.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>
Adam Ford [Wed, 10 Feb 2016 07:41:10 +0000 (01:41 -0600)]
OMAP3_logic: Add NAND args to boot UBIFS
With the recent addition of UBI support, this patch will add the preset
parameters to allow for mouting an UBIFS from the 'fs' partition in NAND.
-V2: ubi.mtd=fs instead of ubi.mtd=4
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Vignesh R [Wed, 10 Feb 2016 05:36:09 +0000 (11:06 +0530)]
am43xx: qspi: Fix config to select SPI mode
CONFIG_SF_DEFAULT_MODE is used to select default SPI mode when using
sf commands. Therefore fix am43xx to use CONFIG_SF_DEFAULT_MODE instead
of CONFIG_DEFAULT_SPI_MODE.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Vignesh R [Wed, 10 Feb 2016 05:21:43 +0000 (10:51 +0530)]
ARM : DRA7: Switch QSPI to use MODE-0 at 64MHz
According to Data Manual(SPRS915P) of AM572x, TI QSPI controller on
DRA74 EVM(rev 1.1+) can support up to 64MHz in MODE-0, whereas MODE-3 is
limited to 48MHz. Hence, switch to MODE-0 for better throughput.
Also, add IODelay parameters for the same.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
David Müller (ELSOFT AG) [Tue, 9 Feb 2016 15:48:31 +0000 (16:48 +0100)]
arm: VCMA9: because of NOR flash space constrains, activate THUMB build mode
Signed-off-by: David Müller <d.mueller@elsoft.ch>
David Müller (ELSOFT AG) [Tue, 9 Feb 2016 15:48:30 +0000 (16:48 +0100)]
arm: build some file(s) as ARM mode only
Signed-off-by: David Müller <d.mueller@elsoft.ch>
David Müller (ELSOFT AG) [Tue, 9 Feb 2016 15:48:29 +0000 (16:48 +0100)]
arm: the ARM920T is THUMB capable, so select the appropriate ISA
Signed-off-by: David Müller <d.mueller@elsoft.ch>
David Müller (ELSOFT AG) [Tue, 9 Feb 2016 15:48:28 +0000 (16:48 +0100)]
arm: make sure board_init_r() is being called using the right mode (ARM / THUMB)
Signed-off-by: David Müller <d.mueller@elsoft.ch>
Vagrant Cascadian [Tue, 9 Feb 2016 03:55:31 +0000 (19:55 -0800)]
Fix variable documented in README.distro for PXE address.
Fixes typo of pxe_addr_r with pxefile_addr_r.
Signed-off-by: Vagrant Cascadian <vagrant@debian.org>
Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>
Adam Ford [Tue, 9 Feb 2016 03:27:19 +0000 (21:27 -0600)]
OMAP3LOGIC: Update maintainer
I will take this over from Peter Barada, since I work with it daily
at Logic PD.
Signed-off-by: Adam Ford <aford173@gmail.com>
Acked-by: Peter Barada <peter.barada@logicpd.com>
Adam Ford [Tue, 9 Feb 2016 01:06:08 +0000 (19:06 -0600)]
OMAP3: omap3_logic: Grow SPL to 64K from 54K
Based on the work done by Overo, this seems to help some compilers
that have a hard time fitting all the code into the allocated space.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Derald D. Woods [Mon, 8 Feb 2016 02:54:47 +0000 (20:54 -0600)]
OMAP3: am3517_evm: SD/MMC boot with uEnv.txt, zImage, and FDT
Boot with the Linux zImage and am3517-evm.dtb pair, when SD/MMC media
is present. This behavior can be overridden by creating a 'uEnv.txt'
file with 'uenvcmd' defined.
To boot an existing 'uImage', create the following 'uEnv.txt':
[start]-----------------------------------------------------------------
loaduimage=fatload mmc 0:1 ${loadaddr} ${bootfile}
uenvcmd=run loaduimage; run mmcargs; bootm ${loadaddr}
[end]-------------------------------------------------------------------
Inspired by similar patches, for other OMAP3 boards, from EEWiki
- https://github.com/eewiki/u-boot-patches/tree/master/v2016.01
Signed-off-by: Derald D. Woods <woods.technical@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tom Rini [Sun, 14 Feb 2016 13:39:32 +0000 (08:39 -0500)]
Merge branch 'master' of git://git.denx.de/u-boot-uniphier
Masahiro Yamada [Fri, 12 Feb 2016 11:27:02 +0000 (20:27 +0900)]
ARM: uniphier: add support for PH1-Pro4 Ace and Sanji boards
Initial commit for PH1-Pro4 Ace and Sanji boards.
Note:
There are two variants for the Ace board in terms of the amount of
DDR memory; 1GB or 2GB.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Fri, 12 Feb 2016 11:27:01 +0000 (20:27 +0900)]
ARM: dts: uniphier: enable I2C channel 2 of ProXstream2 Gentil board
This is used for on-board inter-connection.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Fri, 12 Feb 2016 11:27:00 +0000 (20:27 +0900)]
ARM: dts: uniphier: add EEPROM node for ProXstream2 Gentil board
This board has an EEPROM connected to the I2C channel 0 of the SoC.
Its slave address is 0x54.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 9 Feb 2016 09:59:52 +0000 (18:59 +0900)]
ARM: uniphier: drop unnecessary "bootm_low" environment define
This environment define has been here to work around the LMB
allocation error introduced by commit
9c11135ce053 ("image: fix
getenv_bootm_size() function").
It is no longer needed because the root cause was fixed by commit
0cb389dd1a38 ("image: fix getenv_bootm_size() function again").
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Fri, 5 Feb 2016 04:21:07 +0000 (13:21 +0900)]
ARM: uniphier: adjust DDR clock delay line for ProXstream2
It turned out that DDR channel 2 was not working on ProXstream2
Vodka board. Add the missing ACBLDR0 register setting to adjust
the delay between the clock lines and the address/command lines.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Fri, 5 Feb 2016 04:20:32 +0000 (13:20 +0900)]
ARM: uniphier: move cmd_ddrmphy.c to fix build error
If CONFIG_CMD_DDRMPHY_DUMP is enabled, the build fails.
Fixes:
93d92d46cd01 ("ARM: uniphier: add dump command for DDR Multi PHY registers")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Fri, 5 Feb 2016 04:20:31 +0000 (13:20 +0900)]
ARM: uniphier: fix makefiles to build cmd_ddr(m)phy.c
The U-Boot proper building needs to descend arch/arm/mach-uniphier/dram
to build these commands.
Fixes:
93d92d46cd01 ("ARM: uniphier: add dump command for DDR Multi PHY registers")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:51:41 +0000 (21:51 +0900)]
ARM: uniphier: remove unused header mio-regs.h
This header is no longer used.
This is the last file in arch/arm/mach-uniphier/include/mach/.
At last, I've succeeded in eliminating the mach directory.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:40 +0000 (21:11 +0900)]
ARM: uniphier: drop unneeded EHCI pin mux settings
These pin mux settings are cared by the pinctrl drivers.
Remove the ad-hoc code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:38 +0000 (21:11 +0900)]
usb: remove UniPhier EHCI driver
Now, all this driver does can be covered by the generic EHCI driver
(drivers/usb/host/ehci-generic.c). UniPhier SoCs have switched to
use it. Delete this driver rather than bothering to convert it to
Driver Model.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Marek Vasut <marex@denx.de>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:39 +0000 (21:11 +0900)]
ARM: uniphier: switch over to generic EHCI driver
The UniPhier EHCI driver (drivers/usb/host/ehci-uniphier.c) does
nothing special but set the base address and handle reset/clock.
Since commit
4feefdcfe916 ("usb: add clock support for generic EHCI"),
the generic one (drivers/usb/host/ehci-generic.c) can do those, too.
We no longer need to stick to the dedicated driver.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:37 +0000 (21:11 +0900)]
ARM: dts: uniphier: add clocks properties to EHCI nodes
This allows the EHCI driver to get clocks from device tree.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:36 +0000 (21:11 +0900)]
ARM: dts: uniphier: add device nodes for MIO control block
This block provides clock and reset control for MIO (Media I/O)
hardware blocks such as USB2.0, SD card, eMMC, etc.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:35 +0000 (21:11 +0900)]
ARM: dts: uniphier: add device nodes for Peripheral control block
This block provides clock and reset control for peripherals such as
UART, I2C, IC card, etc.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:34 +0000 (21:11 +0900)]
ARM: dts: uniphier: add device nodes for System Control blocks
These are mainly used for controlling clocks and resets.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:33 +0000 (21:11 +0900)]
ARM: dts: uniphier: add reference clock nodes
Add master clock nodes generated by crystal oscillators.
PH1-sLD3, PH1-LD4: 24.576 MHz
PH1-Pro4, ProXstream2: 25.000 MHz
PH1-Pro5: 20.000 MHz
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:32 +0000 (21:11 +0900)]
clk: uniphier: add Media I/O clock driver for UniPhier SoCs
This is the initial commit for the UniPhier clock drivers.
Currently, only the Media I/O clock is supported.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:31 +0000 (21:11 +0900)]
ARM: uniphier: support USB boot mode for ProXstream2 / PH1-LD6b SoC
The USB boot code is too fat and complicated to be included in SPL
(at least for now). So, it was implemented as a separate project
(what we call USB-loader).
The expected boot sequence is as follows:
Boot ROM -> USB-loader -> SPL -> U-Boot proper
The USB-loader loads the SPL and U-Boot proper from a USB memory
onto the locked L2 cache. Then, SPL needs to copy the U-Boot proper
to DRAM, so this mode looks like a NOR boot from the view of SPL.
However, we want to distinguish between (genuine) NOR boot and USB
boot in some places.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:30 +0000 (21:11 +0900)]
ARM: uniphier: add missing static qualifier
This function is for local use in the file.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:29 +0000 (21:11 +0900)]
ARM: uniphier: create early page table at run-time
UniPhier SoCs are not equipped with dedicated on-chip SRAM. Instead,
locked outer cache is used as RAM area during the early boot stage
where DRAM is not ready yet. This effectively means MMU must be
always enabled while we are in SPL.
Currently, the SPL image for UniPhier SoCs contains the page table
statically defined at compile time. It has been a burden because the
16KB page table occupies a quarter memory footprint of the 64KB SPL
image.
Finally, there is no more room to implement new features in SPL.
Setting aside the NOR boot mode, this issue can be solved by creating
the page table onto RAM at run time.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 12:11:28 +0000 (21:11 +0900)]
ARM: uniphier: change stack pointer address for SPL
No special reason for the current stack address 0x0ff08000.
Change it to 0x00100000 to simplify the init_page_table.
There are two types of SoCs in terms of the load address of SPL.
[1] PH1-sLD3, PH1-LD4, PH1-sLD8
SPL is loaded at 0x00040000-0x0004ffff
[2] PH1-Pro4, PH1-Pro5, ProXstream2, PH1-LD6b
SPL is loaded at 0x00100000-0x0010ffff
The new stack area (0x000f8000-0x00100000) should be safe for all the
cases.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 10:12:31 +0000 (19:12 +0900)]
spl: define BOOT_DEVICE_USB
This enum is referenced from common/spl/spl.c.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Tue, 2 Feb 2016 03:53:31 +0000 (12:53 +0900)]
ARM: uniphier: update U-Boot file names in workflow
Since commit
ad1ecd2063da ("fdt: Build a U-Boot binary without device
tree") and commit
03c25bcd263a ("fdt: Build an SPL binary without
device tree"), we can use shorter file names for the output images.
The default configuration for UniPhier SoCs enables CONFIG_OF_SEPARATE
and CONFIG_SPL_OF_CONTROL. In this case, spl/u-boot-spl.bin is the
same as spl/u-boot-spl-dtb.bin. Likewise, u-boot.img is the same as
as u-boot-dtb.img. So, this change of the flow has no impact.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Masahiro Yamada [Thu, 21 Jan 2016 05:57:30 +0000 (14:57 +0900)]
ARM: uniphier: support some more DRAM use cases on PH1-Pro4 boards
Some of PH1-Pro4 boards are equipped with larger amount of DRAM than
the reference board. Add UMC settings to support them.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Thu, 21 Jan 2016 05:56:09 +0000 (14:56 +0900)]
ARM: uniphier: fix nfsboot command
This is no longer working, so needs reworking.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Thu, 21 Jan 2016 05:56:08 +0000 (14:56 +0900)]
ARM: uniphier: factor out common part of boot commands
The environment "bootm_low" is updated before the "bootz" command.
This is common for all the boot modes (NOR, NAND, TFTP, etc.), so
can be factored out.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Thu, 21 Jan 2016 05:56:07 +0000 (14:56 +0900)]
ARM: uniphier: add default bootm_low to fix FIT boot
Commit
25d4eb8091f4 ("ARM: uniphier: add bootm_low environment")
missed to add "bootm_low" for FIT boot. Set "bootm_low" to the
DRAM base address.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada [Thu, 21 Jan 2016 05:56:06 +0000 (14:56 +0900)]
ARM: uniphier: fix NOR boot command
Commit
89835b3557fe ("ARM: uniphier: allow to run zImage rather than
uImage") changed the kernel boot commands. Unlike "bootm", "bootz"
does not relocate the kernel image. When the boot device is a NOR
flash, the zImage should be copied from the NOR onto the DRAM before
it is passed to the "bootz" command.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Siva Durga Prasad Paladugu [Tue, 17 Nov 2015 09:00:10 +0000 (14:30 +0530)]
arasan: nfc: Add initial nand driver support for arasan
Added initial nand driver support for arasan nand flash
controller.This supports nand erase,nand read, nand write
This uses the hardware ECC for read and write operations
ZynqMP uses this driver.
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
[scottwood: Fix checkpatch warnings]
Signed-off-by: Scott Wood <oss@buserror.net>
Siva Durga Prasad Paladugu [Tue, 17 Nov 2015 09:00:09 +0000 (14:30 +0530)]
zynqmp: nand: Add Nand driver support for zynqmp
Add nand driver support for zynqmp. The Nand
controller used in ZynqMP is Arasan Nand Flash
controller.
Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
[scottwood: Fix checkpatch warning]
Signed-off-by: Scott Wood <oss@buserror.net>
Kevin Smith [Thu, 14 Jan 2016 16:01:39 +0000 (16:01 +0000)]
mtd: pxa3xx_nand: Don't alloc unneeded memory
The allocation size is reduced from what was introduced from the
Linux kernel, as U-boot uses the statically allocated nand_info
instead of needing to dynamically allocate an mtd_info instance.
Signed-off-by: Kevin Smith <kevin.smith@elecsyscorp.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Cc: Scott Wood <scottwood@freescale.com>
Kevin Smith [Thu, 14 Jan 2016 16:01:38 +0000 (16:01 +0000)]
mtd: pxa3xx_nand: Correct offset calculation
Correct some pointer math in initialization. An offset was added
to a struct-typed pointer instead of one casted to a byte-size,
resulting in a much larger offset than intended.
Signed-off-by: Kevin Smith <kevin.smith@elecsyscorp.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Cc: Scott Wood <scottwood@freescale.com>
Kevin Smith [Thu, 14 Jan 2016 16:01:36 +0000 (16:01 +0000)]
mtd: pxa3xx_nand: Correct null dereference
Correct a null pointer dereference in board_nand_init(). Zeroed
memory was allocated, then immediately dereferenced. The
dereference is completely removed, since this pointer is later
initialized in alloc_nand_resources.
Signed-off-by: Kevin Smith <kevin.smith@elecsyscorp.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Cc: Scott Wood <scottwood@freescale.com>
Peng Fan [Wed, 27 Jan 2016 02:38:02 +0000 (10:38 +0800)]
nand: mxs: fix error handling for mxs_nand_init
Fix error handling for mxs_nand_init.
The original error handling is wrong for err2 and err1.
Should first free desc[x], then free desc.
This patch also correctly handle err3, should use
MXS_DMA_CHANNEL_AHB_APBH_GPMI0 as the check point.
Cc: Stefano Babic <sbabic@denx.de>
CC: Fabio Estevam <Fabio.Estevam@freescale.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Tom Rini [Thu, 11 Feb 2016 23:18:15 +0000 (18:18 -0500)]
Merge branch 'master' of git://git.denx.de/u-boot-video
Simon Glass [Sat, 6 Feb 2016 21:31:38 +0000 (14:31 -0700)]
video: tegra: Enable the 'lcd' env variable work-around
Enable this option on all tegra boards.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Simon Glass [Sat, 6 Feb 2016 21:31:37 +0000 (14:31 -0700)]
dm: video: Add a temporary work-around for old stdout var
Boards with a saved environment may use 'lcd' in their stdout environment
variable, expecting that this will enable output to the LCD. When the board
moves to use driver model for video, this will no-longer work. Add a
work-around to fix this. A warning messages is printed, and we will remove
the work-around at the end of 2016.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Hans de Goede [Tue, 9 Feb 2016 21:38:31 +0000 (22:38 +0100)]
Revert "common/memsize.c: Simplify RAM size detection"
This commit breaks bootup on sunxi boards, the get stuck
when running the main u-boot binary at:
CPU: Allwinner H3 (SUN8I)
I2C: ready
DRAM:
This reverts commit
8e7cba048baae68ee0916a8f52b4304277328d5e.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Stephen Warren [Sat, 6 Feb 2016 01:04:43 +0000 (18:04 -0700)]
test/py: capture the entire U-Boot version at boot
The existing regex simply ensures that the captured version string doesn't
go past the end of a line. We really want to grab as much as possible. Do
this by explicitly including a ) character at the end of the regex to
match the last character of the version test.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Stephen Warren [Sat, 6 Feb 2016 01:04:42 +0000 (18:04 -0700)]
test/py: fix off-by-one error in spawn matching code
A regex match object's .end() value is already the index after the match,
not the index of the last character in the match, so there's no need to
add 1 to point past the match.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Stephen Warren [Wed, 3 Feb 2016 23:46:34 +0000 (16:46 -0700)]
test/py: HTML awesome!
Implement three improvements to the HTML log file:
- Ability to expand/contract sections. All passing sections are contracted
at file load time so the user can concentrate on issues requiring
action.
- The overall status report is copied to the top of the log for easy
access.
- Add links from the status report to the test logs, for easy navigation.
This all relies on Javascript and the jquery library. If the user doesn't
have Javascript enabled, or jquery can't be downloaded, the log should
look and behave identically to how it did before this patch.
A few notes on the diff:
- A few more 'with log.section("xxx")' were added, so that all stream
blocks are kept within a section block for consistent HTML entity
nesting structure. This changed indentation in a few places, making
the diff look slightly larger.
- HTML entity IDs are cleaned up. We assign simple incrementing integer
IDs now, rather than using mangled test names which were possibly
invalid.
- Sections and streams now use common CSS class names (in addition to the
current separate class names) to more easily share the new behaviour.
This also reduces the CSS file size since rules don't need to be
duplicated.
- An "OK" status is logged after some external command executions so that
make and flash steps are auto-contracted at log file load time, assuming
they passed.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Stephen Warren [Wed, 3 Feb 2016 17:42:11 +0000 (10:42 -0700)]
test/py: exit(1) if there are problems running py.test
The test/py/test.py wrapper script catches exceptions thrown when
exec()ing py.test in order to print a helpful error message. However,
the exception handling code squashes the exception and so the script
exits with a non-zero exit code, leading callers to believe that it
passed. Fix this.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Stephen Warren [Fri, 29 Jan 2016 23:10:04 +0000 (16:10 -0700)]
itest: allow map_physmem to return 0 in limited cases
On some systems, RAM starts at address 0. If the user executes itest
against address 0 on such a system, it will call map_physmem(0, ...)
which will return 0 back; mapping only changes the address on sandbox.
This causes itest to believe map_physmem() has failed, and hence fails
the comparison.
Fix itest so that it allows map_physmem() to return 0 /if/ the orignal
address passed to it was also 0.
This fixes "tegra-uboot-flasher flash" on Tegra20.
This has the disadvantage that on sandbox, failed mapping attempts for
address 0 are not detected. Instead, should the code only call
map_physmem() on sandbox? Or, should map_physmem() return its error status
some other way. Or, should the special case only be allowed on systems
where the base of RAM is 0 somehow?
Fixes:
7861204c9af7 ("itest: make memory access work under sandbox")
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Stephen Warren [Fri, 29 Jan 2016 20:26:58 +0000 (13:26 -0700)]
gunzip: remove avail_in recalculation
Current, the following passes:
./u-boot -d arch/sandbox/dts/test.dtb -c 'ut_image_decomp'
but the following fails:
./u-boot -d arch/sandbox/dts/test.dtb -c 'ut dm; ut_image_decomp'
This is because the gunzip code reads input data beyond the end of its
input buffer. In the first case above, this data just happens to be 0,
which just happens to trigger gzip to signal the error the decompression
unit test expects. In the second case above, the "ut dm" test has written
data to the accidentally-read memory, which causes the gzip code to take a
different path and so return a different value, which triggers the test
failure.
The cause of gunzip reading past its input buffer is the re-calculation of
s.avail_in in zunzip(), since it can underflow. Not only is the formula
non-sensical (it uses the delta between two output buffer pointers to
calculate available input buffer size), it also appears to be unnecessary,
since the gunzip code already maintains this value itself. This patch
removes this re-calculation to avoid the underflow and redundant work.
The loop exit condition is also adjusted so that if inflate() has consumed
the entire input buffer, without indicating returning Z_STREAM_END (i.e.
decompression complete without error), an error is raised. There is still
opportunity to simplify the code here by splitting up the loop exit
condition into separate tests. However, this patch makes the minimum
modifications required to solve the problem at hand, in order to keep the
Acked-by: Kees Cook <keescook@chromium.org>
diff simple.
I am not entirely convinced that the loop in zunzip() is necessary at all.
It could only be useful if inflate() can return Z_BUF_ERROR (which
typically means that it needs more data in the input buffer, or more space
in the output buffer), even though Z_FINISH is set /and/ the full input is
available in the input buffer /and/ there is enough space to store the
decompressed output in the output buffer. The comment in zlib.h after the
prototype of inflate() implies this is never the case. However, I assume
there must have been some reason for introducing this loop in the first
place, as part of commit "Fix gunzip to work for any gziped uImage size".
This patch is similar to the earlier
b75650d84d4b "gzip: correctly
bounds-check output buffer", which corrected a similar issue for
s.avail_out.
Cc: Catalin Radu <Catalin@VirtualMetrix.com>
Cc: Kees Cook <keescook@chromium.org>
Fixes:
f039ada5c109 ("Fix gunzip to work for any gziped uImage size")
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Paul Kocialkowski [Sun, 7 Feb 2016 15:50:50 +0000 (16:50 +0100)]
sniper: Drop references to P970
There are various different boards with the same hardware sold as LG Optimus
Black, such as P970, P970g and KU5900. Since this port is functional for all
variants, it doesn't make sense to keep references to P970.
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Tom Rini <trini@konsulko.com>
David Müller (ELSOFT AG) [Sat, 6 Feb 2016 06:57:29 +0000 (07:57 +0100)]
s3c24xx: serial: Remove dead code
Signed-off-by: David Müller <d.mueller@elsoft.ch>
David Müller (ELSOFT AG) [Sat, 6 Feb 2016 06:57:28 +0000 (07:57 +0100)]
doc: Remove any reference to CONFIG_MODEM_SUPPORT, CONFIG_CMD_HWFLOW, CONFIG_HWFLOW and friends from the documentation.
Signed-off-by: David Müller <d.mueller@elsoft.ch>
David Müller (ELSOFT AG) [Sat, 6 Feb 2016 06:57:27 +0000 (07:57 +0100)]
Remove unused CONFIG_HWFLOW option and associated dead code.
Signed-off-by: David Müller <d.mueller@elsoft.ch>