Kever Yang [Fri, 2 Aug 2019 07:40:02 +0000 (10:40 +0300)]
rockchip: evb-rk3328: enable defconfig options for TPL/SPL
Enable driver options for TPL/SPL in evb-rk3328_defconfig.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
[cherry picked from commit https://github.com/rockchip-linux/u-boot/commit/df4f40acb449815384e397dcaf5b618bbc6cd855 with minor modifications] Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Kever Yang [Fri, 2 Aug 2019 07:40:01 +0000 (10:40 +0300)]
rockchip: Kconfig: enable TPL support for rk3328
Enable TPL support and some related option in Kconfig.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
[cherry picked from commit https://github.com/rockchip-linux/u-boot/commit/430b01462bf3f24aaf7920ae2587a6943c39ab5d with minor modifications] Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Kever Yang [Fri, 2 Aug 2019 07:40:00 +0000 (10:40 +0300)]
rockchip: dts: rk3328: update dmc node for driver
Update dmc node for full feature driver.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
[cherry picked from commit https://github.com/rockchip-linux/u-boot/commit/1e1495636574c78ea9d3af3e0aae95d5204612d6 with minor modifications] Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Kever Yang [Fri, 2 Aug 2019 07:39:59 +0000 (10:39 +0300)]
rockchip: ram: add full feature rk3328 DRAM driver
This driver supports DDR3/LPDDR3/DDR4 SDRAM initialization.
Signed-off-by: YouMin Chen <cym@rock-chips.com> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
[cherry picked from commit https://github.com/rockchip-linux/u-boot/commit/9fb0777ec3cc6a89af9d2e0969c3bfe58306a88d with minor modifications] Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
arm: dts: ficus: Enable booting from eMMC when using SPL
This commits enables booting from eMMC when using SPL on 96Boards
Ficus board by adding SDHCI to boot order. Since the SDHCI driver
already has the reloc flag, this works straightaway. While we are at it,
let's also include the common u-boot dtsi for rk3399.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
arm: dts: rock960: Enable booting from eMMC when using SPL
This commits enables booting from eMMC when using SPL on 96Boards
Rock960 board by adding SDHCI to boot order. Since the SDHCI driver
already has the reloc flag, this works straightaway. While we are at it,
let's also include the common u-boot dtsi for rk3399.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Nick Xie [Tue, 30 Jul 2019 03:51:16 +0000 (11:51 +0800)]
arm64: dts: rockchip: Add support for Khadas Edge-Captain
Add devicetree support for Khadas Edge-Captain.
Khadas Captain is the carrier board for Khadas Edge.
Specification
- Rockchip RK3399
- Dual-Channel 2GB/4GB LPDDR4
- SD card slot
- Onboard 16GB/32GB/128GB eMMC
- RTL8211FD 1Gbps
- AP6356S/AP6398S WiFI/BT
- HDMI Out, DP, MIPI DSI/CSI, eDP
- USB 3.0, 2.0
- USB Type C power and data
- GPIO expansion ports
- Full 4 Lane M.2 Socket
- 16MB SPI Flash
- IR
- Programmable MCU
Commit details of rk3399-khadas-edge-*.dts sync from Linux 5.3-rc2:
"arm64: dts: rockchip: Add support for Khadas Edge/Edge-V/Captain boards"
(sha1: c2aacceedc86af87428d998e23a1aca24fd8aa2e)
Signed-off-by: Nick Xie <nick@khadas.com> Tested-by: Chris Webb <chris@arachsys.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Nick Xie [Tue, 30 Jul 2019 03:51:15 +0000 (11:51 +0800)]
arm64: dts: rockchip: Add support for Khadas Edge-V
Add devicetree support for Khadas Edge-V.
Khadas Edge-V is a Khadas VIM form factor Rockchip RK3399 board.
Specification
- Rockchip RK3399
- Dual-Channel 2GB/4GB LPDDR4
- SD card slot
- Onboard 16GB/32GB/128GB eMMC
- RTL8211FD 1Gbps
- AP6356S/AP6398S WiFI/BT
- HDMI Out, DP, MIPI DSI/CSI, eDP
- USB 3.0, 2.0
- USB Type C power and data
- GPIO expansion ports
- Full 4 Lane M.2 Socket
- 16MB SPI Flash
- IR
- Programmable MCU
Commit details of rk3399-khadas-edge-*.dts sync from Linux 5.3-rc2:
"arm64: dts: rockchip: Add support for Khadas Edge/Edge-V/Captain boards"
(sha1: c2aacceedc86af87428d998e23a1aca24fd8aa2e)
Signed-off-by: Nick Xie <nick@khadas.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Nick Xie [Tue, 30 Jul 2019 03:51:14 +0000 (11:51 +0800)]
arm64: dts: rockchip: Add support for Khadas Edge
Add devicetree support for Khadas Edge.
Khadas Edge is an expandable Rockchip RK3399 board with goldfinger.
Specification
- Rockchip RK3399
- Dual-Channel 2GB/4GB LPDDR4
- Onboard 16GB/32GB/128GB eMMC
- RTL8211FD 1Gbps
- AP6356S/AP6398S WiFI/BT
- HDMI Out, DP
- USB 3.0, 2.0
- USB Type C power and data
- 16MB SPI Flash
- Programmable MCU
Commit details of rk3399-khadas-edge-*.dts sync from Linux 5.3-rc2:
"arm64: dts: rockchip: Add support for Khadas Edge/Edge-V/Captain boards"
(sha1: c2aacceedc86af87428d998e23a1aca24fd8aa2e)
Signed-off-by: Nick Xie <nick@khadas.com> Tested-by: Chris Webb <chris@arachsys.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Kever Yang [Mon, 29 Jul 2019 09:18:18 +0000 (12:18 +0300)]
rockchip: rk3328: set DDR as non-secure in SPL
Set DDR as non-secure so that MMC DMA can access.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
[cherry picked from https://github.com/rockchip-linux/u-boot/commit/bfe741ab9eb4f97371a4e6c24185419d57a3a75f and https://github.com/rockchip-linux/u-boot/commit/73d952acc8cc1ddad6652ba71895d9fe928c1e4b with minor modifications] Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Andrew F. Davis [Tue, 16 Jul 2019 13:49:38 +0000 (09:49 -0400)]
arm: mach-keystone: Use appended original image size in image processing
When an image is signed/encrypted on K2 devices the image may get padded
to meet alignment requirements for the signature/encryption type. The
original size is appended as 4 bytes little-endian to the end of the
final image.
Normally the trailing extra bytes are ignored and so restoring the
exact original size is not important. In the case of initrd the
original size is important as the kernel uses it to look for
additional filesystem data and can do the wrong thing when the
size is not correct.
Read off the original size and report it back from the image post
processing stage.
Signed-off-by: Andrew F. Davis <afd@ti.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Extend the davinci NAND driver to support the driver model. For now this
doesn't add any device-tree parsing due to the fact that we can't access
the actual nand node on the device-tree - it's a subnode of the aemif
device and we don't have an aemif driver on davinci at the moment.
omapl138_lcdk_defconfig: don't build support for SPI
The following warning is emited when building u-boot for da850-lcdk:
===================== WARNING ======================
This board does not use CONFIG_DM_SPI. Please update
the board before v2019.04 for no dm conversion
and v2019.07 for partially dm converted drivers.
Failure to update can lead to driver/board removal
See doc/driver-model/MIGRATION.txt for more info.
====================================================
===================== WARNING ======================
This board does not use CONFIG_DM_SPI_FLASH. Please update
the board to use CONFIG_SPI_FLASH before the v2019.07 release.
Failure to update by the deadline may result in board removal.
See doc/driver-model/MIGRATION.txt for more info.
====================================================
While we could fix it by selecting CONFIG_DM_SPI, there's no need to
build it at all as SPI is disabled on da850-lcdk. Remove all unneeded
options from the defconfig.
davinci: remove CONFIG_DM_I2C_COMPAT from defconfigs
This option is no longer used on any davinci board but still selected
in defconfigs which causes the following warning:
===================== WARNING ======================
This board uses CONFIG_DM_I2C_COMPAT. Please remove
(possibly in a subsequent patch in your series)
before sending patches to the mailing list.
====================================================
Remove all references to CONFIG_DM_I2C_COMPAT from davinci.
Adam Ford [Mon, 29 Jul 2019 13:28:39 +0000 (08:28 -0500)]
ARM: da850_am18xxevm: Remove config and references
This board has been abandonded for a while. I do not have this hardware
and nobody has appeared to notice and/or care that it's orphaned.
Since much of this code is inserted into the da850evm code base, removing
it from support will make da850evm support easier going forward.
This patch removes the da850_am18xxevm_defconfig, README references to this
board and the reference to this board from the MAINTAINERS list.
Stephen Warren [Fri, 19 Jul 2019 17:21:17 +0000 (11:21 -0600)]
Makefile: fix implementation of BINMAN_DEBUG
binman only accepts the -D argument early on the command-line, yet the
Makefile currently passes it near the end. This causes the build to fail
if this feature is used. Re-order the command-line to fix this.
Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Simon Glass [Sat, 20 Jul 2019 18:24:10 +0000 (12:24 -0600)]
binman: Clean up all output directories in tests
At present some tests leave behind output directories. This happens
because some tests call binman, which sets up an output directory, then
call it again, which sets up another output directory and leaves the
original one behind.
Fix this by using a separate temporary directory when binman is called
twice, or by manually removing the output directory.
Simon Glass [Sat, 20 Jul 2019 18:24:08 +0000 (12:24 -0600)]
binman: Update state when replacing device-tree entries
Since the state module holds references to all the device trees used by
binman, it must be updated when the device trees are updated. Add support
for this.
Simon Glass [Sat, 20 Jul 2019 18:24:06 +0000 (12:24 -0600)]
binman: Support replacing data in a cbfs
At present binman cannot replace data within a CBFS since it does not
allow rewriting of the files in that CBFS. Implement this by using the
new WriteData() method to handle the case.
Add a header to compressed data so that the amount of compressed data can
be determined without reference to the size of the containing entry. This
allows the entry to be larger that the contents, without causing errors in
decompression. This is necessary to cope with a compressed device tree
being updated in such a way that it shrinks after the entry size is
already set (an obscure case). It is not used with CBFS since it has its
own metadata for this. Increase the number of passes allowed to resolve
the position of entries, to handle this case.
Simon Glass [Sat, 20 Jul 2019 18:24:05 +0000 (12:24 -0600)]
binman: Update Entry.WriteData() to handle special sections
At present this method assumes that the parent section does not need
to recalculate its position or adjust any metadata it may contain. But
when the entry changes size this may not be true. Also if the parent
section is more than just a container (e.g. it is a CBFS) then the
section may need to regenerate its output.
Add a new WriteChildData() method to sections and call this from the
WriteData() method, to handle this situation.
Simon Glass [Sat, 20 Jul 2019 18:24:04 +0000 (12:24 -0600)]
binman: Update Entry.ReadEntry() to work through classes
At present we simply extract the data directly from entries using the
image_pos information. This happens to work on current entry types, but
cannot work if the entry type encodes the data in some way. Update the
ReadData() method to provide the data by calling a new ReadChildData()
method in the parent. This allows the entry_Section class, or possibly
any other container class, to return the correct data in all cases.
Simon Glass [Sat, 20 Jul 2019 18:24:01 +0000 (12:24 -0600)]
binman: Place Intel descriptor at image start
The Intel descriptor must always appear at the start of an (x86) image,
so it is supposed to position itself there always. However there is no
explicit test for this. Add one and fix a bug introduced by the recent
change to adjust Entry to read the node in a separate call.
Simon Glass [Sat, 20 Jul 2019 18:24:00 +0000 (12:24 -0600)]
binman: Adjust fmap to ignore CBFS files
The FMAP is not intended to show the files inside a CBFS. The FMAP can be
used to locate the CBFS itself, but then the CBFS must be read to find out
what is in it.
Update the FMAP to work this way and add some debugging while we are here.
Simon Glass [Sat, 20 Jul 2019 18:23:59 +0000 (12:23 -0600)]
libfdt: Copy the struct region in fdt_resize()
At present this function appears to copy only the data before the struct
region and the data in the string region. It does not seem to copy the
struct region itself.
>From the arguments of this function it seems that it should support fdt
and buf being different. This patch attempts to fix this problem.
Upstream commit: c72fa77 libfdt: Copy the struct region in fdt_resize()
Simon Glass [Sat, 20 Jul 2019 18:23:58 +0000 (12:23 -0600)]
binman: Support shrinking a entry after packing
Sometimes an entry may shrink after it has already been packed. In that
case we must repack the items. Of course it is always possible to just
leave the entry at its original size and waste space at the end. This is
what binman does by default, since there is the possibility of the entry
changing size every time binman calculates its contents, thus causing a
loop.
Simon Glass [Sat, 20 Jul 2019 18:23:56 +0000 (12:23 -0600)]
binman: Allow updating entries that change size
So far we don't allow entries to change size when repacking. But this is
not very useful since it is common for entries to change size after an
updated binary is built, etc.
Add support for this, respecting the original offset/size/alignment
constraints of the image layout. For this to work the original image
must have been created with the 'allow-repack' property.
This does not support entry types with sub-entries such as files and
CBFS, but it does support sections.
Simon Glass [Sat, 20 Jul 2019 18:23:55 +0000 (12:23 -0600)]
binman: Add more tests for image header position
The positioning does not currently work correctly if at the end of an
image with no fixed size. Also if the header is in the middle of an image
it can cause a gap in the image since the header position is normally at
the image end, so entries after it are placed after the end of the image.
Fix these problems and add more tests to cover these cases.
Simon Glass [Sat, 20 Jul 2019 18:23:53 +0000 (12:23 -0600)]
binman: Write the original input fdtmap to a file
When reading an image in, write its fdtmap to a file in the output
directory. This is useful for debugging. Update the 'ls' command to set up
the output directory; otherwise it will fail.
Simon Glass [Sat, 20 Jul 2019 18:23:51 +0000 (12:23 -0600)]
binman: Add info to allow safely repacking an image later
At present it is not possible to discover the contraints to repacking an
image (e.g. maximum section size) since this information is not preserved
from the original image description.
Add new 'orig-offset' and 'orig-size' properties to hold this. Add them to
the main device tree in the image.
Simon Glass [Sat, 20 Jul 2019 18:23:50 +0000 (12:23 -0600)]
binman: Support updating entries in an existing image
While it is useful and efficient to build images in a single pass from a
unified description, it is sometimes desirable to update the image later.
Add support for replace an existing file with one of the same size. This
avoids needing to repack the file. Support for more advanced updates will
come in future patches.
Simon Glass [Sat, 20 Jul 2019 18:23:49 +0000 (12:23 -0600)]
binman: Tidy up _SetupDtb() to use its own temporary file
At present EnsureCompiled() uses an file from the 'output' directory (in
the tools module) when compiling the device tree. This is fine in most
cases, allowing useful inspection of the output files from binman.
However in functional tests, _SetupDtb() creates an output directory and
immediately removes it afterwards. This serves no benefit and just
confuses things, since the 'official' output directory is supposed to be
created and destroyed in control.Binman().
Add a new parameter for the optional temporary directory to use, and use a
separate temporary directory in _SetupDtb().
Simon Glass [Sat, 20 Jul 2019 18:23:48 +0000 (12:23 -0600)]
binman: Allow the fdtmap to remain unchanged
When updating an existing image where the size of all entries remains the
same, we should not need to regenerate the fdtmap. Update the entry to
return the same fdtmap as was read from the image.
Simon Glass [Sat, 20 Jul 2019 18:23:46 +0000 (12:23 -0600)]
binman: Add a function to obtain the image for an Entry
At present we have an 'image' property in the entry for this purpose, but
this is not necessary and seems error-prone in the presence of
inheritance. Add a function instead. The Entry_section class overrides
this with a special version, since top-level sections are in fact images,
since Image inherits Entry_section.
Simon Glass [Sat, 20 Jul 2019 18:23:45 +0000 (12:23 -0600)]
binman: Adjust Entry to read the node in a separate call
At present the Entry constructor sets up the object and then immediately
reads its device-tree node to obtain its properties.
This breaks a convention that constructors should not do any processing.
A consequence is that we must pass all arguments to the constructor and
cannot have the node-reading proceed in a different way unless we pass
flags to that constructor. We already have a 'test' flag in a few cases,
and now need to control whether the 'orig_offset' and 'orig_size'
properties are set or not.
Adjust the code to require a separate call to ReadNode() after
construction. The Image class remains as it was.
Simon Glass [Sat, 20 Jul 2019 18:23:44 +0000 (12:23 -0600)]
binman: Add an image name into the fdtmap
Since binman supports multiple images it is useful to know which one
created the image that has been read. Then it is possible to look up that
name in the 'master' device tree (containing the description of all
images).
Simon Glass [Sat, 20 Jul 2019 18:23:43 +0000 (12:23 -0600)]
binman: Store the entry in output_fdt_files
In some cases we want to access the Entry object for a particular device
tree. This allows us to read its contents or update it. Add this
information to output_fdt_files and provide a function to read it.
Also rename output_fdt_files since its name is no-longer descriptive.
Simon Glass [Sat, 20 Jul 2019 18:23:42 +0000 (12:23 -0600)]
binman: Allow state functions to fail to return data
At present these state functions raise an exception if they cannot find
what is requested. But in some cases the information is optional (e.g. an
fdtmap in a coming patch) so it is better to return gracefully.
Update these two functions to return None when the data cannot be found.
Simon Glass [Sat, 20 Jul 2019 18:23:41 +0000 (12:23 -0600)]
binman: Support loading entry data from a file
When modifying an image it is convenient to load the data from the file
into each entry so that it can be reprocessed. Add a new LoadData() method
to handle this.
Simon Glass [Sat, 20 Jul 2019 18:23:40 +0000 (12:23 -0600)]
binman: Store image fdtmap when loading from a file
This data provides all the information about the position and size of each
entry. Store it for later use when loading an image. It can be reused as
is if the image is modified without changing offsets/sizes.
Simon Glass [Sat, 20 Jul 2019 18:23:38 +0000 (12:23 -0600)]
dtoc: Update Fdt.FromData() to allow a name
It is confusing when something goes wrong with a device tree which was
created from data rather than a file, since there is no identifying
filename. Add an option to provide this. Use the filename as the name,
where available
Simon Glass [Sat, 20 Jul 2019 18:23:33 +0000 (12:23 -0600)]
binman: Simplify state.fdt_subset
At present this excludes the device tree passed in to binman since it
is always returned first by GetAllFdts(). However, this is easy to ensure
by adding a check in that function. Change this dict to includes all
device trees, and rename it to fdt_set.
Simon Glass [Sat, 20 Jul 2019 18:23:32 +0000 (12:23 -0600)]
binman: Adjust state.fdt_files to be keyed by entry type
It makes more sense to use entry type as the key for this dictionary,
since the filename can in principle be anything. Make this change and also
rename fdt_files and add a comment to explain it better.
Simon Glass [Sat, 20 Jul 2019 18:23:31 +0000 (12:23 -0600)]
binman: Adjust GetFdt() to be keyed by etype
At present the FDTs are keyed by their default filename (not their actual
filename). It seems easier to key by the entry type, since this is always
the same for each FDT type.
To do this, add a new Entry method called GetFdtEtype(). This is necessary
since some entry types contain a device tree which are not the simple
three entry types 'u-boot-dtb', 'u-boot-spl' or 'u-boot-tpl'.
The code already returns a dict for GetFdt(). Update the value of that
dict to include the filename so that existing code can work.
Simon Glass [Sat, 20 Jul 2019 18:23:29 +0000 (12:23 -0600)]
binman: Rename state.GetFdts()
This function name conflicts with Entry.GetFdts() which has a different
purpose. Rename it to avoid confusion. Also update a stale comment
relating to this function.
Simon Glass [Sat, 20 Jul 2019 18:23:28 +0000 (12:23 -0600)]
binman: Convert GetFdtSet() to use a dict
At present this function returns a set of device-tree filenames. It has no
way of returning the actual device-tree object. Change it to a dictionary
so that we can add this feature in a future patch.
Simon Glass [Sat, 20 Jul 2019 18:23:26 +0000 (12:23 -0600)]
binman: Use print() to print output
At present tout writes directly to stdout. This is not necessary and it
prevents tests from redirecting output. Change it to use print() for the
non-progress output.
Simon Glass [Sat, 20 Jul 2019 18:23:23 +0000 (12:23 -0600)]
dtoc: Return a non-zero exit code when tests fail
At present 'dtoc -t' return a success code even if some of the tests fail.
Fix this by checking the test result and setting the exit code. This
allows 'make qcheck' to function as expected.
Packed structures like struct uuid are not aligned. GCC 9.1 therefore
throws an error when trying to compile gen_rand_uuid().
lib/uuid.c: In function ‘gen_rand_uuid’:
lib/uuid.c:244:2: error: converting a packed ‘struct uuid’ pointer
(alignment 1) to a ‘unsigned int’ pointer (alignment 4) may result in
an unaligned pointer value [-Werror=address-of-packed-member]
244 | unsigned int *ptr = (unsigned int *)&uuid;
| ^~~~~~~~
Generate the uuid in a properly aligned buffer.
The byte order of a random number should not matter. Do not call
cpu_to_be32() to change the byte order.
Reported-by: Ramon Fried <rfried.dev@gmail.com> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The pumpkin board is made by Gossamer Engineering and is using
a MediaTek SoC. The board currently comes in two available version:
MT8516 SoC and MT8167 SoC.
The board provides the following IOs: eMMC, NAND, SD card, USB type-A,
Ethernet, Wi-Fi, Bluetooth, Audio (jack out, 2 PDM port, 1 analog in),
serial over USB, and an expansion header.
Additionally there is a HDMI port, DSI port, and camera port only
on the MT8167 version of the board.
The board can be powered by battery and/or via a USB Type-C port and
is using a PMIC MT6392.
The eMMC and NAND are sharing pins and cannot be used together.
This commit is adding the basic boot support for the Pumpkin MT8516
board on the eMMC.
drivers/pinctrl/mediatek/pinctrl-mtk-common.c:35:36:
warning: ‘mtk_drive’ defined but not used [-Wunused-const-variable=]
static const struct mtk_drive_desc mtk_drive[] = {
^~~~~~~~~
doc: arch: sandbox: Replace all the instances of README.sandbox
commit 49116e6d236d ("doc: arch: Convert README.sandbox to reST")
Moves README.sandbox to doc/arch.
Replace all the existing instances to point to the right documentation
file.
Bin Meng [Fri, 26 Jul 2019 02:04:04 +0000 (19:04 -0700)]
doc: board: Add missing board index.rst files
These board index.rst files are missing in previous html doc patch
series, hence it causes some build warnings. Add those files.
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
projects / u-boot.git / log