The gpio_hog_probe_all() functionality can be perfectly well replaced by
DM_FLAG_PROBE_AFTER_BIND DM flag, which would trigger .probe() callback
of each GPIO hog driver instance after .bind() and thus configure the
hogged GPIO accordingly.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Samuel Holland <samuel@sholland.org>
Currently, dm_probe_devices checks that the flags of the device contains
DM_FLAG_PRE_RELOC. However DM_FLAG_PRE_RELOC is a driver - and not a
device - flag. This means that the check in pre_reloc_only mode would
always fail.
Instead, what was aimed to be checked is that either the driver of the
device has the flag set, or that the device has the u-boot,dm-pre-reloc
Device Tree property set.
So let's fix the check to allow u-boot,dm-pre-reloc devices to be
probed.
Cc: Quentin Schulz <foss+uboot@0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
The assignment of block device nodes in Linux is not deterministic by
default, i.e. a newly added eMMC controller or other block device can
change the assignment of /dev/mmcblkN (or other block device node like
e.g. /dev/sdXy) and prevent the system from picking the correct block
device for root filesystem in case the root filesystem is specified on
kernel command line using 'root=/dev/mmcblkNpM' (or 'root=/dev/sdXy'
etc.).
One way out is to derive PARTUUID in U-Boot, which is unique identifier
of a partition, and pass that as root=PARTUUID=<partuuid> to Linux via
kernel command line. Linux would then find the partition using PARTUUID,
no matter on which block device the partition resides and which node was
assigned to that block device.
Derive the PARTUUID before scanning for extlinux presence and assign it
into distro_bootpart_uuid environment variable, which can then be used
in extlinux.conf kernel command line specifier.
Note that it is not possible to do this in scan_dev_for_extlinux script
because this script is called from scan_dev_for_boot script, which is
called for both block devices as well as UBI volumes, and we can not
derive PARTUUID for UBI volumes.
Signed-off-by: Marek Vasut <marex@denx.de>
This reverts commit 65ba7add0d.
A weak extern is a nasty sight to behold: If the symbol is never
defined, on ARM, the linker will replace the function call with a NOP.
This behavior isn't well documented but there are at least some hints
to it [1].
When timer_read_counter() is not defined, this obviously does the wrong
thing here and it does so silently. The consequence is that a board
without timer_read_counter() will sleep for random amounts and generally
have erratic get_ticks() values.
Drop the __weak annotation of the extern so a linker error is raised
when timer_read_counter() is not defined. This is okay, the original
reason for the reverted change - breaking the sandbox build - no longer
applies.
Final sidenote: This was the only weak extern in the entire tree at
this time as far as I can tell. I guess we should avoid introduction of
them again as they are obviously a very big footgun.
[1]: https://stackoverflow.com/questions/31203402/gcc-behavior-for-unresolved-weak-functions
Fixes: 65ba7add0d ("time: add weak annotation to timer_read_counter declaration")
Reported-by: Serge Bazanski <q3k@q3k.org>
Signed-off-by: Harald Seiler <hws@denx.de>
This adds a new method to load Fman firmware from a filesystem. This
allows users to use regular files instead of hard-coded offsets for the
firmware.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
In order to read the firmware from the filesystem, we need a file name.
Read the firmware name from the device tree, using the firmware-name
property. This property is commonly used in Linux to determine the
correct name to use (and can be seen in several device trees in U-Boot).
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
The fs_loader device is used to pull in settings via the chosen node.
However, there was no library function for this, so arria10 was doing it
explicitly. This function subsumes that, and uses ofnode_get_chosen_node
instead of navigating the device tree directly. Because fs_loader pulls
its config from the environment by default, it's fine to create a device
with nothing backing it at all. Doing this allows enabling
CONFIG_FS_LOADER without needing to modify the device tree.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
This commit adds configs required for using dcp_rng driver in imx6ull
defconfig files.
Signed-off-by: Kshitiz Varshney <kshitiz.varshney@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
This commit introduces Random number generator to uboot. It uses DCP
driver for number generation.
RNG driver can be invoked by using below command on uboot prompt:-
rng <number of bytes>
Signed-off-by: Kshitiz Varshney <kshitiz.varshney@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Instead of always retuning success, return actual result of
load_simple_fit_image or spl_parse_image_header, otherwise we
might end up jumping on uninitialized spl_image->entry_point.
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
Reviewed-by: Stefan Roese <sr@denx.de>
When only sspi is entered, help information can be printed.
Signed-off-by: chenzhipeng <chenzhipeng@eswincomputing.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a config-option which forces the console to stay silent until the
proper environment is loaded from flash.
This is important when the default environment does not silence the
console but no output must be printed when 'silent' is set in the flash
environment.
After the environment from flash is loaded, the console will be
silenced/unsilenced depending on it. If PRE_CONSOLE_BUFFER is also
used, the buffer will now be flushed if the console should not be
silenced.
Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Activate the command stm32key with CONFIG_CMD_STM32KEY.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Activate the command fuse to access on STM32MP13x OTP with
the BSEC driver.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Add support for "st,stm32mp13-bsec" for STM32MP13x in the
bsec driver based on OP-TEE pseudo TA STM32MP BSEC.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
When OP-TEE is used, the SMC for BSEC management are not available and
the STM32MP BSEC pseudo TA must be used (it is mandatory for STM32MP13
and it is a new feature for STM32MP15x).
The BSEC driver try to open a session to this PTA BSEC at probe
and use it for OTP read or write access to fuse or to shadow.
This patch also adapts the commands stm32key and stboard to handle
the BSEC_LOCK_PERM lock value instead of 1.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Remove unnecessary return in stm32mp_bsec_write_lock and replace tab
by space for plat_auto opts.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
The timer units in the stm32mp15x CPUs have interrupts, depending on the
timer flavour either one "global" or four dedicated ones. Add the irqs
to the timer units on stm32mp15x.
Sync the DT Files with linux kernel v6.1 and with commit a9b70102253ce
("ARM: dts: stm32: Add timer interrupts on stm32mp15")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Remove unnecessary space in device tree stm32mp15xx-dkx.dtsi.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
The include file stm32mp1-clksrc.h is not necessary for the SCMI STM32MP15
dtsi files as the clock tree is not defined in the U-Boot SCMI device tree;
these SCMI device tree only support TFABOOT with stm32mp15_defconfig,
SPL with the basic boot defconfig is not supported.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Add support of offset and linear calibration for STM32MP15.
The calibration is performed once at probe. The ADC is set in power on
state for calibration. It remains in this state after calibration,
to give to the kernel the opportunity to retrieve calibration data,
directly from the ADC.
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Add support for USB2514B onboard hub on stm32mp157c EV1 board. The HUB
is supplied by a 3v3 PMIC regulator.
[backport from linux ad9591b01d24]
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Tested-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Activate the USB onboard HUB driver, that is used to enable the HUB supply
on STM32MP15 EVAL, DK1 and DK2 boards.
This avoids marking the 3v3 corresponding regulator as always-on.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
The main issue the driver addresses is that a USB hub needs to be
powered before it can be discovered. This is often solved by using
"regulator-always-on".
This driver is inspired by the Linux v6.1 driver. It only enables (or
disables) the hub vdd (3v3) supply, so it can be enumerated.
Scanning of the device tree is done in a similar manner to the sandbox,
by the usb-uclass. DT part looks like:
&usbh_ehci {
...
#address-cells = <1>;
#size-cells = <0>;
hub@1 {
compatible = "usb424,2514";
reg = <1>;
vdd-supply = <&v3v3>;
};
};
When the bus gets probed, the driver is automatically probed/removed from
the bus tree, as an example on stm32:
STM32MP> usb start
starting USB...
STM32MP> dm tree
Class Index Probed Driver Name
-----------------------------------------------------------
usb 0 [ + ] ehci_generic | |-- usb@5800d000
usb_hub 0 [ + ] usb_onboard_hub | | `-- hub@1
usb_hub 1 [ + ] usb_hub | | `-- usb_hub
STM32MP> usb tree
USB device tree:
1 Hub (480 Mb/s, 0mA)
| u-boot EHCI Host Controller
|
+-2 Hub (480 Mb/s, 2mA)
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
- Assorted Kconfig cleanups, code clean ups, env+ubi updates, correct
return value propagation out of environment scripts, and update CI to
latest "jammy" tag.
phy-stm32-usbphyc bindings uses a connector node with vbus-supply
property.
[backport from linux 43e55d778a6b]
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Update to the latest "jammy" tag. This requires us to list libc6-i386 as
a required package to install (for nokia_rx51 tests) that was previously
implicit.
Signed-off-by: Tom Rini <trini@konsulko.com>
Having NXP specific items in the main menu is confusing. Especially
the comment line
*** Other functionality shared between NXP SoCs ***
is simply misleading.
Move all NXP stuff into a separate sub-menu.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Put all entries for skipping low-level initialization into a sub-menu.
Use different titles for main U-Boot, SPL, TPL.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
In preparation of adding the infodocs target to our CI install the
prerequisite texinfo software package.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
[BUG]
Since btrfs supports single device RAID0 at mkfs time after btrfs-progs
v5.14, if we create a single device raid0 btrfs, and created a file
crossing stripe boundary:
# mkfs.btrfs -m dup -d raid0 test.img
# mount test.img mnt
# xfs_io -f -c "pwrite 0 128K" mnt/file
# umount mnt
Since btrfs is using 64K as stripe length, above 128K data write is
definitely going to cross at least one stripe boundary.
Then u-boot would fail to read above 128K file:
=> host bind 0 /home/adam/test.img
=> ls host 0
< > 131072 Fri Dec 30 00:18:25 2022 file
=> load host 0 0 file
BTRFS: An error occurred while reading file file
Failed to load 'file'
[CAUSE]
Unlike tree blocks read, data extent reads doesn't consider cases in which
one data extent can cross stripe boundary.
In read_data_extent(), we just call btrfs_map_block() once and read the
first mapped range.
And if the first mapped range is smaller than the desired range, it
would return error.
But since even single device btrfs can utilize RAID0 profiles, the first
mapped range can only be at most 64K for RAID0 profiles, and cause false
error.
[FIX]
Just like read_whole_eb(), we should call btrfs_map_block() in a loop
until we read all data.
Since we're here, also add extra error messages for the following cases:
- btrfs_map_block() failure
We already have the error message for it.
- Missing device
This should not happen, as we only support single device for now.
- __btrfs_devread() failure
With this bug fixed, btrfs driver of u-boot can properly read the above
128K file, and have the correct content:
=> host bind 0 /home/adam/test.img
=> ls host 0
< > 131072 Fri Dec 30 00:18:25 2022 file
=> load host 0 0 file
131072 bytes read in 0 ms
=> md5sum 0 0x20000
md5 for 00000000 ... 0001ffff ==> d48858312a922db7eb86377f638dbc9f
^^^ Above md5sum also matches.
Reported-by: Sam Winchenbach <swichenbach@tethers.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
sata_sil.c is PCI driver and without CONFIG_PCI is building of U-Boot failing:
LD u-boot
ld.bfd: drivers/ata/sata_sil.o: in function `sil_exec_cmd':
drivers/ata/sata_sil.c:148: undefined reference to `dm_pci_phys_to_bus'
ld.bfd: drivers/ata/sata_sil.o: in function `sil_pci_probe':
drivers/ata/sata_sil.c:687: undefined reference to `dm_pci_get_bdf'
ld.bfd: drivers/ata/sata_sil.c:691: undefined reference to `dm_pci_read_config16'
ld.bfd: drivers/ata/sata_sil.c:701: undefined reference to `dm_pci_map_bar'
ld.bfd: drivers/ata/sata_sil.c:704: undefined reference to `dm_pci_map_bar'
ld.bfd: drivers/ata/sata_sil.c:713: undefined reference to `dm_pci_write_config16'
ld.bfd: drivers/ata/sata_sil.c:717: undefined reference to `dm_pci_read_config16'
ld.bfd: drivers/ata/sata_sil.o: in function `sil_cmd_identify_device':
drivers/ata/sata_sil.c:256: undefined reference to `dm_pci_phys_to_bus'
ld.bfd: drivers/ata/sata_sil.o: in function `sil_sata_rw_cmd':
drivers/ata/sata_sil.c:330: undefined reference to `dm_pci_phys_to_bus'
ld.bfd: drivers/ata/sata_sil.o: in function `sil_sata_rw_cmd_ext':
drivers/ata/sata_sil.c:377: undefined reference to `dm_pci_phys_to_bus'
make: *** [Makefile:1778: u-boot] Error 1
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Use the ut_assert macros for more useful error messages.
Signed-off-by: Brandon Maier <brandon.maier@collins.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The Linux kernel appends 4 bytes to the end of compressed kernel Images
containing the uncompressed image size. They are used to make
self-decompressing Images easier. However for archs that don't support
self-decompression, like ARM64, U-Boot must be able to decompress the
image with the garbage data.
The existing decompressors already support this. This unit test was
added while working on zstd support as upstream zstd will error if there
is garbage data in the input buffer, and special care was needed to
support this.
Signed-off-by: Brandon Maier <brandon.maier@collins.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
For a squashfs filesystem, the fragment table is followed by
the following tables: NFS export table, ID table, xattr table.
The export and xattr tables are both completely optional, but
the ID table is mandatory. The Linux implementation refuses to
mount the image if the ID table is missing. Tables that are no
present have their location in the super block set
to 0xFFFFFFFFFFFFFFFF.
The u-boot implementation previously assumed that it can always
rely on the export table location as an upper bound for the fragment
table, trying (and failing) to read past filesystem bounds if it
is not present.
This patch changes the driver to use the ID table instead and only
use the export table location if it lies between the two.
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Add a test which validates that exit from environment script works as
expected, including return value propagation and clipping to positive
integers.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Make sure the 'exit' command as well as 'exit $val' command exits
from environment scripts immediately and propagates return value
out of those scripts fully. That means the following behavior is
expected:
"
=> setenv foo 'echo bar ; exit 1' ; run foo ; echo $?
bar
1
=> setenv foo 'echo bar ; exit 0' ; run foo ; echo $?
bar
0
=> setenv foo 'echo bar ; exit -2' ; run foo ; echo $?
bar
0
"
As well as the followin behavior:
"
=> setenv foo 'echo bar ; exit 3 ; echo fail'; run foo; echo $?
bar
3
=> setenv foo 'echo bar ; exit 1 ; echo fail'; run foo; echo $?
bar
1
=> setenv foo 'echo bar ; exit 0 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit -1 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit -2 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit ; echo fail'; run foo; echo $?
bar
0
"
Fixes: 8c4e3b79bd ("cmd: exit: Fix return value")
Reviewed-by: Hector Palacios <hector.palacios@digi.com>
Signed-off-by: Marek Vasut <marex@denx.de>
This adds the UUU UCmd functionality as an OEM command. While the
fastboot tool allows sending arbitrary commands as long as they are
prefixed with "oem". This allows running generic U-Boot commands over
fastboot without UUU, which is especially useful when not using USB.
This is really the route we should have gone in the first place when
adding these commands.
While we're here, clean up the UUU Kconfig a bit.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Much of the fastboot code predates the introduction of Kconfig and
has quite a few #ifdefs in it which is unnecessary now that we can use
IS_ENABLED() et al.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: Sean Anderson <sean.anderson@seco.com>
Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> # on vim3l
In U-Boot driver model the devices can be referenced by
phandle in the U-Boot configuration nodes.
Without a valid node provided during the bind, the driver
associated to OP-TEE TA can't be referenced.
For example to force the sequence number with alias
(.flags = DM_UC_FLAG_SEQ_ALIAS)
aliases {
rng0 = &optee;
};
or other configuration:
board-sysinfo {
compatible = "vendor,sysinfo-board";
ramdom = <&optee>;
}
With this patch all drivers bound from OP-TEE service
discovery are now associated are associated to OP-TEE
node, allowing to identify by phandle the driver
provided by the TA for one UCLASS without modifying
device tree.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Add trace in env save to indicate any errors to end user and avoid
silent output when the command 'env erase' is not executed as it is
done in env_save with commit 8968288cb4 ("env: add failing trace in
env_save")
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Add support of opts erase for ubi env backend, this opts is used by
command 'env erase'.
This command only zero-fill the env UBI volume CONFIG_ENV_UBI_VOLUME
and CONFIG_ENV_UBI_VOLUME_REDUND, so the saved environment becomes
invalid.
This patch introduces a local define ENV_UBI_VOLUME_REDUND
only to avoid #if in the code, as CONFIG_ENV_UBI_VOLUME_REDUND
is only defined when CONFIG_SYS_REDUNDAND_ENVIRONMENT is defined.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Checks that `make u-boot-initial-env` creates the text file
u-boot-initial-env and checks that it at least contains
`board=<something>`.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
When the number of parameters is wrong, the return value should be processed in
the same way as other cmds, return CMD_RET_USAGE so that it can print the information.
Signed-off-by: Shenlin Liang <liangshenlin@eswincomputing.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The two configuration CONFIG_MTDIDS_DEFAULT and CONFIG_MTDPARTS_DEFAULT
are not needed with mtd configuration CONFIG_SYS_MTDPARTS_RUNTIME which
allows the MTDIDS and MTDPARTS to be configured at runtime.
This patch has no defconfig impacts because CONFIG_SYS_MTDPARTS_RUNTIME
is only used by two platforms (stm32mp and igep00x0) which don't define
CONFIG_MTDIDS_DEFAULT or CONFIG_MTDPARTS_DEFAULT.
This patch solves an UBI environment load issue for NAND boot for
stm32mp15 platform. In mtd_uboot.c, when GD_FLG_ENV_READY is not set,
env_get_f() return a EMPTY string, define in default_environment[]
because CONFIG_MTDIDS_DEFAULT="" and CONFIG_MTDPARTS_DEFAULT="",
but a NULL pointer is expected to allow call of board_mtdparts_default.
Without mtdparts, the env partition [CONFIG_ENV_UBI_PART="UBI"] is not
found in env/ubi.c [CONFIG_ENV_IS_IN_UBI].
It is not a problem when env becomes ready, as these empty variables are
removed form U-Boot environment in env_import() / himport_r().
Fixes: a331017c23 ("Complete migration of MTDPARTS_DEFAULT / MTDIDS_DEFAULT, include in environment")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
add initialization of variable 'node',this can aviod the building
warning:
'node' may be used uninitialized [-Wmaybe-uninitialized]
Signed-off-by: Haijun Qin <qinhaijun@eswincomputing.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This adds an NVMEM reboot mode driver, similar to Linux's
implementation. This allows using the same device tree binding for Linux
and U-Boot in most cases.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
