At the moment every subcommand of "fdt", except "addr" itself, requires
the DT address to be set first. We explicitly check for that before even
comparing against the subcommands' string.
This early bailout also affects the "move" subcommand, even though that
does not require or rely on a previous call to "fdt addr". In fact it
even sets the FDT address to the target of the move command, so is a
perfect beginning for a sequence of fdt commands.
Move the check for a previously set FDT address to after we handle the
"move" command also, so we don't need a dummy call to "fdt addr" first,
before being able to move the devicetree.
This skips one pointless "fdt addr" call in scripts which aim to alter
the control DT, but need to copy it to a safe location first (for
instance to $fdt_addr_r).
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The "fdt move" subcommand was using the provided DTB addresses directly,
without trying to "map" them into U-Boot's address space. This happened
to work since on the vast majority of "real" platforms there is a simple
1:1 mapping of VA to PAs, so either value works fine.
However this is not true on the sandbox, so the "fdt move" command fails
there miserably:
=> fdt addr $fdtcontroladdr
=> cp.l $fdtcontroladdr $fdt_addr_r 40 # simple memcpy works
=> fdt move $fdtcontroladdr $fdt_addr_r
Segmentation fault
Use the proper "map_sysmem" call to convert PAs to VAs, to make this
more robust in general and to enable operation in the sandbox.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Always increment both the iterator and pointer into the string
property value by length of the current element + 1 (to cater
for the string delimiter), otherwise the element extracted from
the string property value would be extracted from an offset that
is multiple of the length of the first element, instead of sum
of element lengths until select index.
This fixes 'fdt get value' operation for index above 1 (counting
from index 0).
Acked-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Fixes: 13982ced2c ("cmd: fdt: Add support for reading stringlist property values")
Signed-off-by: Marek Vasut <marex@denx.de>
The working FDT is the one which comes from the OS and is fixed up by
U-Boot. When the bootm command runs, it sets up the working FDT to be the
one it is about to pass to the OS, so that fixups can happen.
This seems like an important step, so add a message indicating that the
working FDT has changed. This is shown during the running of the bootm
command.
Signed-off-by: Simon Glass <sjg@chromium.org>
The fdt command currently handles stringlists as strings in 'fdt get value'
subcommand. Since strings in FDT stringlists are separated by '\0', only
the first value gets inserted into the environment variable passed to the
'fdt get value' command.
Example, consider the following DT snippet:
/ { compatible = "foo", "bar" };
The following command only reports the first string in stringlist:
=> fdt get value var / compatible ; print var
foo
It is not possible to assign list of null-terminated strings into U-Boot
environment variable. Add optional 'index' parameter to the subcommand
'fdt get value <var> <path> <prop> [<index>]' which lets user specify which
string within the stringlist should be assigned into the 'var' variable.
The default value of 'index' is 0 in case it is not present. This way the
'fdt' command API does not change and existing scripts are not broken.
The following command now reports the Nth string in stringlist, counting
from zero:
=> fdt get value var / compatible 1 ; print var
bar
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
We don't have an option -cq but two distinct options -c and -q.
Fixes: e9496ec374 ("fdt: Add -q option to fdt addr for distro_bootcmd")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
distro_bootcmd uses this construct a few times to test $fdt_addr_r,
and fall back on $fdtcontroladdr if not set/invalid:
if fdt addr ${fdt_addr_r}; then
...
else
...
fi
If the `fdt addr` test fails, it prints the following message on the
console, suggesting there is an error when there is not:
libfdt fdt_check_header(): FDT_ERR_BADMAGIC
To remove this potentially confusing error message, this patch adds -q
as a 'quiet' option for fdt addr, and uses this flag in
config_distro_bootcmd.h
Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
Most U-Boot command deal with start/size instead of start/end. Convert
the "fdt chosen" command to use these semantics as well. The only user
of this subcommand is vexpress, so convert the smhload command to use
this as well. We don't bother renaming the variable in vexpress64's
bootcommand, since it will be rewritten in the next commit.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
We have individual SOC symbols for each keystone 2 platform. Use the
existing CONFIG_ARCH_KEYSTONE rather than CONFIG_SOC_KEYSTONE to
encompass all of the keystone families.
Signed-off-by: Tom Rini <trini@konsulko.com>
It is a pain to have to specify the value 16 in each call. Add a new
hextoul() function and update the code to use it.
Add a proper comment to simple_strtoul() while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
It seems useful to show whether the address of the Control or Working
devicetree is being shown. Add support for this. Drop the confusing 0x
prefix since the command itself only accepts hex.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move the fdt_valid function to fdt_support.
This changes allow to be able to test the validity of a devicetree in
other c files.
Update code syntax.
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
When printing the device tree we want to get an output that can be used as
input for the device tree compiler. This requires that we do not write
bogus lines like
pcie@10000000 {
interrupt-map = * 0x4000127c [0x00000280];
For instance the QEMU virt device has a property interrupt-map with 640
bytes which exceeds CMD_FDT_MAX_DUMP=64.
So lets do away with the artificial limitation to 64 bytes.
As indicated in commit f0a29d4331 ("fdt: Limit printed hex in fdt print
and list commands") if a device tree contains binary blobs, it may still
be desirable to limit the output length. Provide environment variable
fdt_max_dump for this purpose.
Fixes: 5d927b4286 ("Kconfig: Drop CONFIG_CMD_FDT_MAX_DUMP")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.
Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.
This requires quite a few header-file additions.
Signed-off-by: Simon Glass <sjg@chromium.org>
'fdt systemsetup' wasn't working, due to the fact that the 'set' command
was being parsed in do_fdt() by only testing for the leading 's' instead
of "se", which kept the "sys" test further down from executing. Changed
to test for "se" instead, now 'fdt systemsetup' works (to test the
ft_system_setup proc w/o having to boot a kernel).
Signed-off-by: Tom Warren <twarren@nvidia.com>
Move env_set_hex() over to the new header file along with env_set_addr()
which uses it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
store fdt header member with name <member> in U-Boot
Environment variable with name <var>.
for example to get the total length of the fdt and store
it in filesize, call:
fdt header get filesize totalsize
For membernames look into fdt header definition at
scripts/dtc/libfdt/libfdt.h
Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This patch fixes the address information of fdt.
wrong case:
=> fdt addr 0x48000000
=> fdt move 0x48000000 0x41000000 0xa000
=> fdt addr
The address of the fdt is 48000000
Active address in this case is 0x41000000.
Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
When updating the board FDT, some of the operations
are performed by ft_board_setup_ex() and should be
executed also by the fdt command.
Signed-off-by: Nicholas Faustini <nicholas.faustini@azcomtech.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
Thomas reported U-Boot failed to build host tools if libfdt-devel
package is installed because tools include libfdt headers from
/usr/include/ instead of using internal ones.
This commit moves the header code:
include/libfdt.h -> include/linux/libfdt.h
include/libfdt_env.h -> include/linux/libfdt_env.h
and replaces include directives:
#include <libfdt.h> -> #include <linux/libfdt.h>
#include <libfdt_env.h> -> #include <linux/libfdt_env.h>
Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since the compiler is free to place a char array to any address in
memory (in this case the stack), also to a non word aligned address the
function "fdt_prop_parse" runs into troubles upon it wants to write some
(fdt32_t *) to such a variable (if it has been placed to a none word
aligned address).
To avoid this we tell the compiler to always align this scratchpad to a
word aligned address.
Signed-off-by: Bernhard Messerklinger <bernhard.messerklinger@br-automation.com>
Reviewed-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Tested-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Reviewed-by: Simon Glass <sjg@chromium.org>
The verbose overlay application method prints out more helpful
messages, so switch to it.
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit brings things back to the well known working state of the
command.
-
With commit 9620d87259
(cmd/fdt: support single value replacement within an array)
there was an error introduced modifying (inserting) a property to a
device-tree node.
fdt_getprop(...) returnes a len with -1 for a non-existing property, but
a memcpy with len -1 isn't a good idea and things went wrong (crash).
-
Some times later Tom did repair this
with commit 99bb38e2cc
(fdt: Check for NULL return from fdt_getprop in 'fdt set')
This repairs the crash but the behaviour of the command isn't like
before, it makes it impossible to insert a property.
-
Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Acked-by: Simon Glass <sjg@chromium.org>
We are now using an env_ prefix for environment functions. Rename these
for consistency. Also add function comments in common.h.
Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
We are now using an env_ prefix for environment functions. Rename these
commonly used functions, for consistency. Also add function comments in
common.h.
Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.
Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
While the previous pass through fixed one place where we knew that
fdt_getprop would be given a positive len, in the case of 'fdt set' we
do not, so check that we did no get NULL from fdt_getprop().
Cc: Simon Glass <sjg@chromium.org>
Reported-by: Coverity (CID: 163249)
Fixes 72c98ed1ab ("fdt: Add a check to do_fdt() for coverity")
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
We know that fdt_getprop() does not return NULL when len is > 0 but
coverity does not. Add an extra check to keep it happy.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Coverity (CID: 163248)
We know that fdt_getprop() does not return NULL when len is > 0 but
coverity does not. Add an extra check to keep it happy.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Coverity (CID: 163249)
Fixes: bc80295b (fdt: Add get commands to fdt)
With this commit we can modify single values within an array of a dts
property.
This is useful if we have for example a pwm-backlight where we want to
modifiy the pwm frequency per u-boot script.
The pwm is described in dts like this:
backlight {
pwms = <0x0000002b 0x00000000 0x004c4b40>;
};
For changing the frequency, here the 3rd parameter, we simply type:
fdt set /backlight pwms <? ? 0x1E8480>;
For doing all this we:
- backup the property content into our 'SCRATCHPAD'
- only modify the array-cell if the new content doesn't start with '?'
Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
On a Raspberry Pi 2 disagreements on cell endianness can be observed:
U-Boot> fdt print /soc/gpio@7e200000 phandle
phandle = <0x0000000d>
U-Boot> fdt get value myvar /soc/gpio@7e200000 phandle; printenv myvar
myvar=0x0D000000
Fix this by always treating the pointer as BE and converting it in
fdt_value_setenv(), like its counterpart fdt_parse_prop() already does.
Consistently use fdt32_t, fdt32_to_cpu() and cpu_to_fdt32().
Fixes: bc80295 ("fdt: Add get commands to fdt")
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Gerald Van Baren <gvb@unssw.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Acked-by: Simon Glass <sjg@chromium.org>
There are lots of reason why a FDT application might fail, the
error code might give an indication. Let the error code translate
in a error string so users can try to understand what went wrong.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Simon Glass <sjg@chromium.org>
The function that is processing the 'fdt' parameters is one big
if-else if. In order to be able to type command faster only the first
few letter are checked to know which block of code to execute. For
systemsetup, the block of code that was executed was always the wrong
one and ended up in a failure.
} else if (argv[1][0] == 's') {
process "fdt set" command
} else if (strncmp(argv[1], "sys", 3) == 0) {
process "fdt systemsetup" command.
}
When typing "fdt systemsetup", the code that was executed was the code
for "fdt set".
This commit fix this issue by moving the "else if" for systemsetup
before the else if for "fdt set". This allow us to keep compatibility
with any script that make use of "fdt s" to set node values.
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Acked-by: Simon Glass <sjg@chromium.org>
Sometimes devicetree nodes and or properties are added out of the u-boot
console, maybe through some script or manual interaction.
The devicetree as loaded or embedded is quite small, so the devicetree
has to be resized to take up those new nodes/properties.
In original the devicetree was only extended by effective
4 * add_mem_rsv.
With this commit we can add an argument to the "fdt resize" command,
which takes the extrasize to be added.
Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Acked-by: Simon Glass <sjg@chromium.org>
The device tree overlays are a good way to deal with user-modifyable
boards or boards with some kind of an expansion mechanism where we can
easily plug new board in (like the BBB or the raspberry pi).
However, so far, the usual mechanism to deal with it was to have in Linux
some driver detecting the expansion boards plugged in and then request
these overlays using the firmware interface.
That works in most cases, but in some cases, you might want to have the
overlays applied before the userspace comes in. Either because the new
board requires some kind of an early initialization, or because your root
filesystem is accessed through that expansion board.
The easiest solution in such a case is to simply have the component before
Linux applying that overlay, removing all these drawbacks.
Reviewed-by: Stefan Agner <stefan@agner.ch>
Acked-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The current code only checks if the fdt subcommand is fdt addr by checking
whether it starts with 'a'.
Since this is a pretty widely used letter, narrow down that check a bit.
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Now that they are in their own directory, we can remove this prefix.
This makes it easier to find a file since the prefix does not get in the
way.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
