Simon Glass [Wed, 23 Jul 2014 12:55:21 +0000 (06:55 -0600)]
dm: Add child_pre_probe() and child_post_remove() methods
Some devices (particularly bus devices) must track their children, knowing
when a new child is added so that it can be set up for communication on the
bus.
Add a child_pre_probe() method to provide this feature, and a corresponding
child_post_remove() method.
Simon Glass [Wed, 23 Jul 2014 12:55:20 +0000 (06:55 -0600)]
dm: Introduce per-child data for devices
Some device types can have child devices and want to store information
about them. For example a USB flash stick attached to a USB host
controller would likely use this space. The controller can hold
information about the USB state of each of its children.
The data is stored attached to the child device in the 'parent_priv'
member. It can be auto-allocated by dm when the child is probed. To
do this, add a per_child_auto_alloc_size value to the parent driver.
Simon Glass [Wed, 23 Jul 2014 12:55:19 +0000 (06:55 -0600)]
dm: Add functions to access a device's children
Devices can have childen that can be addressed by a simple index, the
sequence number or a device tree offset. Add functions to access a child
in each of these ways.
The index is typically used as a fallback when the sequence number is not
available. For example we may use a serial UART with sequence number 0 as
the console, but if no UART has sequence number 0, then we can fall back
to just using the first UART (index 0).
The device tree offset function is useful for buses, where they want to
locate one of their children. The device tree can be scanned to find the
offset of each child, and that offset can then find the device.
Simon Glass [Wed, 23 Jul 2014 12:55:18 +0000 (06:55 -0600)]
dm: Provide a function to scan child FDT nodes
At present only root nodes in the device tree are scanned for devices.
But some devices can have children. For example a SPI bus may have
several children for each of its chip selects.
Add a function which scans subnodes and binds devices for each one. This
can be used for the root node scan also, so change it.
A device can call this function in its bind() or probe() methods to bind
its children.
Simon Glass [Wed, 23 Jul 2014 12:55:14 +0000 (06:55 -0600)]
dm: Allow a device to be found by its FDT offset
Each device that was bound from a device tree has an node that caused it to
be bound. Add functions that find and return a device based on a device tree
offset.
Simon Glass [Wed, 23 Jul 2014 12:55:12 +0000 (06:55 -0600)]
dm: Introduce device sequence numbering
In U-Boot it is pretty common to number devices from 0 and access them
on the command line using this numbering. While it may come to pass that
we will move away from this numbering, the possibility seems remote at
present.
Given that devices within a uclass will have an implied numbering, it
makes sense to build this into driver model as a core feature. The cost
is fairly small in terms of code and data space.
With each uclass having numbered devices we can ask for SPI port 0 or
serial port 1 and receive a single device.
Devices typically request a sequence number using aliases in the device
tree. These are resolved when the device is probed, to deal with conflicts.
Sequence numbers need not be sequential and holes are permitted.
At present there is no support for sequence numbers using static platform
data. It could easily be added to 'struct driver_info' if needed, but it
seems better to add features as we find a use for them, and the use of -1
to mean 'no sequence' makes the default value somewhat painful.
Simon Glass [Wed, 23 Jul 2014 12:55:11 +0000 (06:55 -0600)]
dm: Avoid activating devices in 'dm uclass' command
This command currently activates devices as it lists them. This is not
desirable since it changes the system state. Fix it and avoid printing
a newline if there are no devices in a uclass.
Simon Glass [Wed, 23 Jul 2014 12:55:07 +0000 (06:55 -0600)]
Add a flag indicating when the serial console is ready
For sandbox we have a fallback console which is used very early in
U-Boot, before serial drivers are available. Rather than try to guess
when to switch to the real console, add a flag so we can be sure. This
makes sure that sandbox can always output a panic() message, for example,
and avoids silent failure (which is very annoying in sandbox).
Simon Glass [Wed, 23 Jul 2014 12:55:06 +0000 (06:55 -0600)]
console: Remove vprintf() optimisation for sandbox
If the console is not present, we try to reduce overhead by stopping any
output in vprintf(), before it gets to putc(). This is of dubious merit
in general, but in the case of sandbox it is incorrect since we have a
fallback console which reports errors very early in U-Boot. If this is
defeated U-Boot can hang or exit with no indication of what is wrong.
Simon Glass [Wed, 23 Jul 2014 12:55:05 +0000 (06:55 -0600)]
stdio: Provide functions to add/remove devices using stdio_dev
The current functions for adding and removing devices require a device name.
This is not convenient for driver model, which wants to store a pointer to
the relevant device. Add new functions which provide this feature and adjust
the old ones to call these.
Simon Glass [Wed, 23 Jul 2014 12:55:03 +0000 (06:55 -0600)]
dm: Allow drivers to be marked 'before relocation'
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.
Simon Glass [Wed, 23 Jul 2014 12:55:02 +0000 (06:55 -0600)]
sandbox: Remove all drivers before exit
Drivers are supposed to be able to close down cleanly. To set a good example,
make sandbox shut down its driver model drivers and remove them before exit.
It may be desirable to do the same more generally once driver model is more
widely-used. This could be done during bootm, before U-Boot jumps to the OS.
It seems far too early to make this change.
Simon Glass [Wed, 23 Jul 2014 12:55:00 +0000 (06:55 -0600)]
dm: Make sure that the root device is probed
The root device should be probed just like any other device. The effect of
this is to mark the device as activated, so that it can be removed (along
with its children) if required.
Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Marek Vasut <marex@denx.de>
Simon Glass [Wed, 23 Jul 2014 12:54:59 +0000 (06:54 -0600)]
stdio: Pass device pointer to stdio methods
At present stdio device functions do not get any clue as to which stdio
device is being acted on. Some implementations go to great lengths to work
around this, such as defining a whole separate set of functions for each
possible device.
For driver model we need to associate a stdio_dev with a device. It doesn't
seem possible to continue with this work-around approach.
Instead, add a stdio_dev pointer to each of the stdio member functions.
Note: The serial drivers have the same problem, but it is not strictly
necessary to fix that to get driver model running. Also, if we convert
serial over to driver model the problem will go away.
Code size increases by 244 bytes for Thumb2 and 428 for PowerPC.
22: stdio: Pass device pointer to stdio methods
arm: (for 2/2 boards) all +244.0 bss -4.0 text +248.0
powerpc: (for 1/1 boards) all +428.0 text +428.0
Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Marek Vasut <marex@denx.de> Reviewed-by: Marek Vasut <marex@denx.de>
Simon Glass [Fri, 11 Jul 2014 04:23:33 +0000 (22:23 -0600)]
sandbox: Always enable malloc debug
Tun on DEBUG in malloc(). This adds code space and slows things down but
for sandbox this is acceptable. We gain the ability to check for memory
leaks in tests.
Simon Glass [Fri, 11 Jul 2014 04:23:28 +0000 (22:23 -0600)]
Add a simple malloc() implementation for pre-relocation
If we are to have driver model before relocation we need to support some
way of calling memory allocation routines.
The standard malloc() is pretty complicated:
1. It uses some BSS memory for its state, and BSS is not available before
relocation
2. It supports algorithms for reducing memory fragmentation and improving
performace of free(). Before relocation we could happily just not support
free().
3. It includes about 4KB of code (Thumb 2) and 1KB of data. However since
this has been loaded anyway this is not really a problem.
The simplest way to support pre-relocation malloc() is to reserve an area
of memory and allocate it in increasing blocks as needed. This
implementation does this.
To enable it, you need to define the size of the malloc() pool as described
in the README. It will be located above the pre-relocation stack on
supported architectures.
Note that this implementation is only useful on machines which have some
memory available before dram_init() is called - this includes those that
do no DRAM init (like tegra) and those that do it in SPL (quite a few
boards). Enabling driver model preior to relocation for the rest of the
boards is left for a later exercise.
Simon Glass [Fri, 11 Jul 2014 04:23:25 +0000 (22:23 -0600)]
Remove form-feeds from dlmalloc.c
These don't really serve any purpose in the modern age. On the other hand
they show up as annoying control characters in my editor, which then happily
removes them.
I believe we can drop these characters from the file.
m68k: define __kernel_size_t as unsinged int again
Commit ddc94378d changed the definition of __kernel_size_t
from unsigned int to unsigned long.
It is true that it fixed warnings on some crosstools
but it increased warnings on the others.
The problem is that we cannot see consistency in terms of
the typedef of __kernel_size_t on M68K architecture.
However, I'd like to suggest to have __kernel_size_t to be
unsigned int again.
Rationale:
[1] Linux Kernel defines __kernel_size_t on M68K as unsigned int.
Let's stick to the Linux's way.
[2] We want to build boards with popular pre-built toolchains,
not the one locally-built by indivisuals.
I think m68-linux-gcc which can be downloaded from www.kernel.org
is the candidate for our _recommended_ toolchains.
With this patch, all the m68k boards can be built without any warnings.
Ian Campbell [Mon, 21 Jul 2014 18:23:18 +0000 (19:23 +0100)]
board_r: run scsi init() on ARM too
This has been disabled for ARM in initr_scsi since that function was
introduced. However it works fine for me on Cubieboard and Cubietruck (with the
upcoming AHCI glue patch).
I also tested on two random ARM platforms which seem to define CONFIG_CMD_SCSI:
- highbank worked fine (on midway hardware)
- omap5_uevm built OK and I confirmed using objdump that things were as
expected (i.e. the default weak scsi_init nop was used).
While there remove the mismatched comment from the #endif (omitting the comment
seems to be the prevailing style in this file).
Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: Simon Glass <sjg@chromium.org>
Ian Campbell [Fri, 18 Jul 2014 19:38:39 +0000 (20:38 +0100)]
AHCI: Increase link timeout to 200ms
In 73545f75b66d "ahci: wait longer for link" I increased the
timeout to 40ms based on the observed behaviour of a WD disk on a
Cubietruck. Since then Karsten Merker and myself have both
observed timeouts with HGST disks (Karsten on Cubietruck, me on
Cubieboard2). Increasing the timeout to ~175ms fixes this, so go
to 200ms for a bit of headroom.
Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Karsten Merker <merker@debian.org> Acked-by: Hans de Goede <hdegoede@redhat.com>
scripts: add mailmapper, a tool to create/update mailmap file
This tool helps to create/update the mailmap file.
It runs 'git shortlog' internally and searches differently spelled author
names which share the same email address. The author name with the most
commits is asuumed to be a canonical real name. If the number of commits
from the cananonical name is equal to or greater than 'MIN_COMMITS' (=50),
the entry for the cananical name will be output. ('MIN_COMMITS' is used
here because we do not want to create a fat mailmap by adding every author
with only a few commits.)
If there exists a mailmap file specified by the mailmap.file configuration
options or '.mailmap' at the toplevel of the repository, it is used as
a base file.
The base file and the newly added entries are merged together and sorted
alphabetically (but the comment block is kept untouched), and then printed
to standard output.
This is the first version of .mailmap created by hand.
Please see "man git-shortlog" for what this commit is trying to do.
Without this file, for example, "git shortlog -n -s" shows as follows:
2693 Wolfgang Denk <------
1002 Stefan Roese <------
811 wdenk <------
808 Mike Frysinger
806 Simon Glass
[snip]
177 Matthias Fuchs
154 stroese <------
153 Timur Tabi
And then, with this file, it shows as follows:
3504 Wolfgang Denk <------
1156 Stefan Roese <------
808 Mike Frysinger
806 Simon Glass
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Stefan Roese <sr@denx.de> Cc: Wolfgang Denk <wd@denx.de>
Igor Grinberg [Tue, 15 Jul 2014 12:52:01 +0000 (15:52 +0300)]
Makefile: fix ctags/etags clean targets
Commit efcf861 (kbuild: use scripts/Makefile.clean)
refactored the cleaning targets and accidentially replaced the actually
generated "ctags" and "etags" files in the file list by "tags" and "TAGS".
"tags" and "TAGS" are not part of the Makefile build targets and
therefore should not be a part of the list for clean targets.
Substitute the actually generated files instead, to fix the clean
targets behavior.
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Igor Grinberg [Tue, 15 Jul 2014 12:52:00 +0000 (15:52 +0300)]
Makefile: fix the {c, e}tags/cscope build targets
Commit 9e41403 (kbuild: change out-of-tree build)
changed the U-Boot build working directory to the output tree
for the out-of-tree builds.
This broke the {c,e}tags/cscope build targets as TAG_SUBDIRS variable
collected directories based on assumption that the build working
directory is the U-Boot source tree directory.
Fix the {c,e}tags/cscope build targets by adding the $(srctree) prefix.
Also, remove the $(obj) prefix from the etags build target to finish
the $(obj) prefix removal started by the same commit.
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Alexander Holler [Mon, 14 Jul 2014 15:49:55 +0000 (17:49 +0200)]
Add option -r to env import to allow import of text files with CRLF as line endings
When this option is enabled, CRLF is treated like LF when importing environments
from text files, which means CRs ('\r') in front of LFs ('\n') are just ignored.
Drawback of enabling this option is that (maybe exported) variables which have
a trailing CR in their content will get imported without that CR. But this
drawback is very unlikely and the big advantage of letting Windows user create
a *working* uEnv.txt too is likely more welcome.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Pavel Machek [Sun, 13 Jul 2014 11:14:27 +0000 (13:14 +0200)]
lib/time.c cleanups
As I initially suspected overflow in time handling, I took a detailed
look at lib/time.c. This adds comments about units being used, reduces
amount of type casting being done, and makes __udelay() always wait at
least one tick. (Current code could do no delaying at all for short
delays).
clang chokes about the concept of having an alias to an
always_inlined function. gcc likely just ignores the always
inlined since binary sizes are equal before and after this
patch. Convert the aliases to weak functions and provide
missing prototypes.
cc: Pavel Herrmann <morpheus.ibis@gmail.com> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
The "#ifdef CONFIG_OMAP1610" was added by commit 6f21347d more than
ten years ago. In those days, the divide-and-round was not used.
I guess that is why this weird code was added here.
Pavel Machek [Wed, 9 Jul 2014 20:42:57 +0000 (22:42 +0200)]
catch wrong load address passed to fatload / ext2load
If filename is passed instead of address to ext2load or fatload,
u-boot silently accepts that, and uses 0 for load address and default
filename from environment. That is confusing, display help instead.
Jeroen Hofstee [Wed, 25 Jun 2014 21:02:21 +0000 (23:02 +0200)]
tools: compiler.h: add missing time.h
genimg_print_time uses time_t, but time.h is never included.
Linux gets away with this since types.h includes time.h.
Explicitly include the header file so building on e.g. FreeBSD
also works.
cc: Tom Rini <trini@ti.com> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Lijun Pan [Fri, 20 Jun 2014 17:17:29 +0000 (12:17 -0500)]
linux/compat.h: port lower_32_bits and upper_32_bits from Linux
[backport from linux commit 204b885e and 218e180e7]
64 bit processors are becomming more and more popular.
lower_32_bits and upper_32_bits save our labor doing
shifts/manipulations like (u32)(n) and (u32)((n) >> 32).
They are good helpers in both little and big endian cases.
Port these two functions here from Linux:include/linux/kernel.h,
cater the comment message to little/big endian cases.
Later on, developers could include linux/compat.h if they want to
use these two functions.
Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com>
Tom Rini [Mon, 21 Jul 2014 15:16:07 +0000 (11:16 -0400)]
esd:cmd_loadpci.c: Switch from "do_source" to "source"
Rather than calling do_source directly (which is not officially exported
from cmd_source.c) call 'source' which is exported and requires a little
less code to do so as well.
Current code uses the preprocessor to change an else case
to a statement without any if condition at all. Although
this works, change the optional code to return early, so
all optional code is contained within a single #ifdef.
Remove self assignments which is just dead code to prevent
compiler warnings about non used arguments. For u-boot this
does not prevent any warning though, on the contrary it actual
introduces warnings when compiling with clang. Remove them.
env_callback.h: spl: mark callback as maybe_unused
When static inline is used in a header file the function
should preferably be inlined and if not possible made a
static function. When declared inside a c file there is a
static function, which might be inlined. Since SPL uses a
define to declare the static inline it becomes part of the
c file although it is declared in a header and clang will
warn that you have introduced unused static functions. Add
maybe_unused to prevent such warnings.
Jeroen Hofstee [Tue, 17 Jun 2014 20:47:31 +0000 (22:47 +0200)]
mtd: cfi_flash: fix clang warning
clang warns this check is silly; it is since s is
a local variable.
u-boot/drivers/mtd/cfi_flash.c:2363:13: warning: comparison of
array 's' not equal to a null pointer is always true
else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
cc: Stefan Roese <sr@denx.de> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Heiko Schocher [Mon, 30 Jun 2014 07:12:09 +0000 (09:12 +0200)]
i2c, omap24xx: add i2c deblock sequenz
If a bus busy is detected when intializing the driver,
toggle 9 times the scl pin. Therefore enable the test mode
of the controller, in which the scl, sda pins can be
controlled manually.
Pavel Machek [Sun, 13 Jul 2014 11:10:45 +0000 (13:10 +0200)]
socfpga: timer actually counts down
Timer on cyclone5 actually counts down. It took me a while to figure
out, as timer counting in wrong direction actually _can_ be used, it
just appears to tick at extremely high frequency in u-boot.
boards.cfg: keep it sorted filling the board field
The boards.cfg file has allowed to use "-" for the board (= 6th) field
if the board name is the same as the 7th field.
But I notice one problem.
Because tools/reformat.py sorts the lines in the simple alphabetical
order (= the order of character code), some entries for the same board
are not lined up together.
For example, "bf527-ezkit" and "bf527-ezkit-v2" share the same board.
But they are located separately because "bf527-ezkit" fills the board
field with "-" whereas "bf527-ezkit-v2" specifies it explicitely.
The similar things can be seen:
- between "trizepsive" and "polaris"
- between "RRvision" and "RRvision_LCD"
- between "korat" and "korat_perm"
- between "lwmon5" and "lcd4_lwmon5"
This commit was generated by the following command:
Eric Nelson [Wed, 9 Jul 2014 19:27:29 +0000 (12:27 -0700)]
i.MX6DL/S: add drive-strength back to pads DISP0_DAT2/DAT10
The pad settings for DISP0_DATA02 and DISP0_DAT10 were not
set in the same way as DISP0_DAT00-23, causing much flicker
in parallel RGB displays on Dual-Lite and Solo processors.
These settings now match the i.MX6 Dual and Quad core versions.
Note that this fixes a regression in commit b47abc3 and that
this is the second time we've had a regression on these two
pads (See commit e654ddf).
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com> Acked-by: Otavio Salvador <otavio@ossystems.com.br>
Michal Simek [Wed, 9 Jul 2014 14:10:49 +0000 (16:10 +0200)]
doc: Add zynq fragment to git-mailrc file
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Signed-off-by: Michal Simek <michal.simek@xilinx.com>
projects / u-boot / log