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kconfig: move CONFIG_OF_* to Kconfig This commit moves: CONFIG_OF_CONTROL CONFIG_OF_SEPARATE CONFIG_OF_EMBED CONFIG_OF_HOSTFILE Because these options are currently not supported for SPL, the "Device Tree Control" menu does not appear in the SPL configuration. Note: zynq-common.h should be adjusted so as not to change the default value of CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:05 +08:00
#
# Device Tree Control
#
config SUPPORT_OF_CONTROL
bool
dtc: Switch to building and using our own dtc unless provided This makes us act like the Linux Kernel does and allow for dtc to be provided externally but otherwise we use the version of dtc that is included in the sources. This in turn means that we can drop the checkdtc logic. We select DTC in the cases where we will need the dtc tool provided. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-24 01:00:57 +08:00
config DTC
bool
pylibfdt: compile pylibfdt only when dtoc/binman is necessary Currently, pylibfdt is always compiled if swig is installed on your machine. It is really annoying because most of targets (excepts x86, sunxi, rockchip) do not use dtoc or binman. "checkbinman" and "checkdtoc" are wrong. It is odd that the final build stage checks if we have built necessary tools. If your platform depends on dtoc/binman, you must be able to build pylibfdt. If swig is not installed, it should fail immediately. I added PYLIBFDT, DTOC, BINMAN entries to Kconfig. They should be property select:ed by platforms that need them. Kbuild will descend into scripts/dtc/pylibfdt/ only when CONFIG_PYLIBFDT is enabled. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-10-17 12:42:44 +08:00
config PYLIBFDT
bool
config DTOC
bool
select PYLIBFDT
config BINMAN
bool
select DTOC
binman: Support packaging U-Boot for scenarios like OF_BOARD or OF_PRIOR_STAGE For scenarios like OF_BOARD or OF_PRIOR_STAGE, no device tree blob is provided in the U-Boot build phase hence the binman node information is not available. In order to support such use case, a new Kconfig option BINMAN_STANDALONE_FDT is introduced, to tell the build system that a device tree blob containing binman node is explicitly required when using binman to package U-Boot. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2021-05-10 20:23:37 +08:00
config BINMAN_STANDALONE_FDT
bool
depends on BINMAN
default y if OF_BOARD || OF_PRIOR_STAGE
help
This option tells U-Boot build system that a standalone device tree
source is explicitly required when using binman to package U-Boot.
This is not necessary in a common scenario where a device tree source
that contains the binman node is provided in the arch/<arch>/dts
directory for a specific board. Such device tree sources are built for
OF_SEPARATE or OF_EMBED. However for a scenario like the board device
tree blob is not provided in the U-Boot build tree, but fed to U-Boot
in the runtime, e.g.: in the OF_PRIOR_STAGE case that it is passed by
a prior stage bootloader. For such scenario, a standalone device tree
blob containing binman node to describe how to package U-Boot should
be provided explicitly.
kconfig: move CONFIG_OF_* to Kconfig This commit moves: CONFIG_OF_CONTROL CONFIG_OF_SEPARATE CONFIG_OF_EMBED CONFIG_OF_HOSTFILE Because these options are currently not supported for SPL, the "Device Tree Control" menu does not appear in the SPL configuration. Note: zynq-common.h should be adjusted so as not to change the default value of CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:05 +08:00
menu "Device Tree Control"
depends on SUPPORT_OF_CONTROL
config OF_CONTROL
bool "Run-time configuration via Device Tree"
dtc: Switch to building and using our own dtc unless provided This makes us act like the Linux Kernel does and allow for dtc to be provided externally but otherwise we use the version of dtc that is included in the sources. This in turn means that we can drop the checkdtc logic. We select DTC in the cases where we will need the dtc tool provided. Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-24 01:00:57 +08:00
select DTC
Add dependencies for MALLOC_F and OF_LIBFDT Some features implicitly depended on MALLOC_F and OF_LIBFDT and would fail at link-time if these features were not enabled. Signed-off-by: Sean Anderson <seanga2@gmail.com>
2019-12-18 10:40:09 +08:00
select OF_LIBFDT if !OF_PLATDATA
treewide: Simply conditions with the new OF_REAL Use this new Kconfig to simplify the compilation conditions where appropriate. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 21:24:03 +08:00
select OF_REAL if !OF_PLATDATA
kconfig: move CONFIG_OF_* to Kconfig This commit moves: CONFIG_OF_CONTROL CONFIG_OF_SEPARATE CONFIG_OF_EMBED CONFIG_OF_HOSTFILE Because these options are currently not supported for SPL, the "Device Tree Control" menu does not appear in the SPL configuration. Note: zynq-common.h should be adjusted so as not to change the default value of CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:05 +08:00
help
This feature provides for run-time configuration of U-Boot
via a flattened device tree.
fdt: Create a new OF_REAL Kconfig The condition to indicate whether there is a runtime devicetree available is OF_CONTROL && !OF_PLATDATA. This is a bit unweidly and is repeated in a lot of places. Add a new OF_REAL Kconfig which provides this information directly. Note: This is similar in effect to LIBFDT. We might consider dropping LIBFDT and using this instead, but this is left for now as we also have OF_LIBFDT_OVERLAY which it would not make sense to change. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 21:24:02 +08:00
config OF_REAL
treewide: Simply conditions with the new OF_REAL Use this new Kconfig to simplify the compilation conditions where appropriate. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 21:24:03 +08:00
bool
fdt: Create a new OF_REAL Kconfig The condition to indicate whether there is a runtime devicetree available is OF_CONTROL && !OF_PLATDATA. This is a bit unweidly and is repeated in a lot of places. Add a new OF_REAL Kconfig which provides this information directly. Note: This is similar in effect to LIBFDT. We might consider dropping LIBFDT and using this instead, but this is left for now as we also have OF_LIBFDT_OVERLAY which it would not make sense to change. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 21:24:02 +08:00
help
Indicates that a real devicetree is available which can be accessed
at runtime. This means that dev_read_...() functions can be used to
read data from the devicetree for each device. This is true if
OF_CONTROL is enabled in U-Boot proper.
dm: Add callback to modify the device tree Certain boards come in different variations by way of utilizing daughter boards, for example. These boards might contain additional chips, which are added to the main board's busses, e.g. I2C. The device tree support for such boards would either, quite naturally, employ the overlay mechanism to add such chips to the tree, or would use one large default device tree, and delete the devices that are actually not present. Regardless of approach, even on the U-Boot level, a modification of the device tree is a prerequisite to have such modular families of boards supported properly. Therefore, we add an option to make the U-Boot device tree (the actual copy later used by the driver model) writeable, and add a callback method that allows boards to modify the device tree at an early stage, at which, hopefully, also the application of device tree overlays will be possible. Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Stefan Roese <sr@denx.de>
2017-02-22 23:07:22 +08:00
config OF_BOARD_FIXUP
bool "Board-specific manipulation of Device Tree"
help
In certain circumstances it is necessary to be able to modify
U-Boot's device tree (e.g. to delete device from it). This option
make the Device Tree writeable and provides a board-specific
"board_fix_fdt" callback (called during pre-relocation time), which
enables the board initialization to modifiy the Device Tree. The
modified copy is subsequently used by U-Boot after relocation.
of: flip CONFIG_SPL_DISABLE_OF_CONTROL into CONFIG_SPL_OF_CONTROL As we discussed a couple of times, negative CONFIG options make our life difficult; CONFIG_SYS_NO_FLASH, CONFIG_SYS_DCACHE_OFF, ... and here is another one. Now, there are three boards enabling OF_CONTROL on SPL: - socfpga_arria5_defconfig - socfpga_cyclone5_defconfig - socfpga_socrates_defconfig This commit adds CONFIG_SPL_OF_CONTROL for them and deletes CONFIG_SPL_DISABLE_OF_CONTROL from the other boards to invert the logic. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-08-12 06:31:54 +08:00
config SPL_OF_CONTROL
bool "Enable run-time configuration via Device Tree in SPL"
depends on SPL && OF_CONTROL
Add dependencies for MALLOC_F and OF_LIBFDT Some features implicitly depended on MALLOC_F and OF_LIBFDT and would fail at link-time if these features were not enabled. Signed-off-by: Sean Anderson <seanga2@gmail.com>
2019-12-18 10:40:09 +08:00
select SPL_OF_LIBFDT if !SPL_OF_PLATDATA
fdt: Create a new OF_REAL Kconfig The condition to indicate whether there is a runtime devicetree available is OF_CONTROL && !OF_PLATDATA. This is a bit unweidly and is repeated in a lot of places. Add a new OF_REAL Kconfig which provides this information directly. Note: This is similar in effect to LIBFDT. We might consider dropping LIBFDT and using this instead, but this is left for now as we also have OF_LIBFDT_OVERLAY which it would not make sense to change. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 21:24:02 +08:00
select SPL_OF_REAL if !SPL_OF_PLATDATA
fdt: Add an option to disable device tree in SPL Some boards cannot support device tree due to lack of memory. Add an option to allow these boards to continue to work (and even use driver model). This is a 'negative' option since most boards are expected to support device tree in SPL. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-02-28 13:06:38 +08:00
help
Some boards use device tree in U-Boot but only have 4KB of SRAM
dts: Kconfig: Fix help for SPL_OF_CONTROL As initially this feature was implemented as a negative CONFIG and later it was redesigned to be positive the help text should be updated to reflect this change. This commit updates the help text to match the current implementation. Signed-off-by: Walter Lozano <wlozano@collabora.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-10-22 22:50:19 +08:00
which is not enough to support device tree. Disable this option to
fdt: Add an option to disable device tree in SPL Some boards cannot support device tree due to lack of memory. Add an option to allow these boards to continue to work (and even use driver model). This is a 'negative' option since most boards are expected to support device tree in SPL. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-02-28 13:06:38 +08:00
allow such boards to be supported by U-Boot SPL.
spl: dm: Kconfig: split OF_CONTROL and OF_PLATDATA between SPL and TPL For the RK3368, we want to use OF_PLATDATA in TPL, but full OF_CONTROL in SPL: this requires the introduction of a new family of configuration options to decouple SPL_OF_CONTROL and SPL_OF_PLATDATA from TPL. Consequently, Makefile.spl needs to be adjusted to test for these configuration items through the $(SPL_TPL_) macro instead of hard-coding the SPL variant. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-06-29 17:11:21 +08:00
config TPL_OF_CONTROL
bool "Enable run-time configuration via Device Tree in TPL"
depends on TPL && OF_CONTROL
Add dependencies for MALLOC_F and OF_LIBFDT Some features implicitly depended on MALLOC_F and OF_LIBFDT and would fail at link-time if these features were not enabled. Signed-off-by: Sean Anderson <seanga2@gmail.com>
2019-12-18 10:40:09 +08:00
select TPL_OF_LIBFDT if !TPL_OF_PLATDATA
fdt: Create a new OF_REAL Kconfig The condition to indicate whether there is a runtime devicetree available is OF_CONTROL && !OF_PLATDATA. This is a bit unweidly and is repeated in a lot of places. Add a new OF_REAL Kconfig which provides this information directly. Note: This is similar in effect to LIBFDT. We might consider dropping LIBFDT and using this instead, but this is left for now as we also have OF_LIBFDT_OVERLAY which it would not make sense to change. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 21:24:02 +08:00
select TPL_OF_REAL if !TPL_OF_PLATDATA
spl: dm: Kconfig: split OF_CONTROL and OF_PLATDATA between SPL and TPL For the RK3368, we want to use OF_PLATDATA in TPL, but full OF_CONTROL in SPL: this requires the introduction of a new family of configuration options to decouple SPL_OF_CONTROL and SPL_OF_PLATDATA from TPL. Consequently, Makefile.spl needs to be adjusted to test for these configuration items through the $(SPL_TPL_) macro instead of hard-coding the SPL variant. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-06-29 17:11:21 +08:00
help
Some boards use device tree in U-Boot but only have 4KB of SRAM
which is not enough to support device tree. Enable this option to
allow such boards to be supported by U-Boot TPL.
dm: core: Add livetree definitions Add a Kconfig option to enable a live device tree, built at run time from the flat tree. Also add structure definitions and a root node. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-19 10:08:53 +08:00
config OF_LIVE
bool "Enable use of a live tree"
dts: Fix OF_LIVE dependency lib/of_live.c references the following 2 ofnode APIs: of_alias_scan() and of_get_property(). These APIs get built only when DM is on. Fix the dependency then. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2021-02-03 21:20:03 +08:00
depends on DM && OF_CONTROL
dm: core: Add livetree definitions Add a Kconfig option to enable a live device tree, built at run time from the flat tree. Also add structure definitions and a root node. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-19 10:08:53 +08:00
help
Normally U-Boot uses a flat device tree which saves space and
avoids the need to unpack the tree before use. However a flat
dts: Fix typo in OF_LIVE Kconfig help Fix typo in Kconfig description. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-08-17 16:16:36 +08:00
tree does not support modification from within U-Boot since it
dm: core: Add livetree definitions Add a Kconfig option to enable a live device tree, built at run time from the flat tree. Also add structure definitions and a root node. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-19 10:08:53 +08:00
can invalidate driver-model device tree offsets. This option
enables a live tree which is available after relocation,
and can be adjusted as needed.
kconfig: move CONFIG_OF_* to Kconfig This commit moves: CONFIG_OF_CONTROL CONFIG_OF_SEPARATE CONFIG_OF_EMBED CONFIG_OF_HOSTFILE Because these options are currently not supported for SPL, the "Device Tree Control" menu does not appear in the SPL configuration. Note: zynq-common.h should be adjusted so as not to change the default value of CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:05 +08:00
choice
prompt "Provider of DTB for DT control"
depends on OF_CONTROL
config OF_SEPARATE
bool "Separate DTB for DT control"
depends on !SANDBOX
help
If this option is enabled, the device tree will be built and
placed as a separate u-boot.dtb file alongside the U-Boot image.
config OF_EMBED
bool "Embedded DTB for DT control"
help
If this option is enabled, the device tree will be picked up and
dts: Add a comment about CONFIG_OF_EMBED being for local use This comment from README.fdt-control did not end up in the Kconfig, which is what most people will see. Add it with a few tweaks. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Michal Simek <michal.simek@xilinx.com>
2015-09-01 08:47:52 +08:00
built into the U-Boot image. This is suitable for local debugging
and development only and is not recommended for production devices.
Boards in the mainline U-Boot tree should not use it.
kconfig: move CONFIG_OF_* to Kconfig This commit moves: CONFIG_OF_CONTROL CONFIG_OF_SEPARATE CONFIG_OF_EMBED CONFIG_OF_HOSTFILE Because these options are currently not supported for SPL, the "Device Tree Control" menu does not appear in the SPL configuration. Note: zynq-common.h should be adjusted so as not to change the default value of CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:05 +08:00
Allow boards to initialize the DT at runtime. In some boards like the Raspberry Pi the initial bootloader will pass a DT to the kernel. When using U-Boot as such kernel, the board code in U-Boot should be able to provide U-Boot with this, already assembled device tree blob. This patch introduces a new config option CONFIG_OF_BOARD to use instead of CONFIG_OF_EMBED or CONFIG_OF_SEPARATE which will initialize the DT from a board-specific funtion instead of bundling one with U-Boot or as a separated file. This allows boards like the Raspberry Pi to reuse the device tree passed from the bootcode.bin and start.elf firmware files, including the run-time selected device tree overlays. Signed-off-by: Alex Deymo <deymo@google.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-04-02 16:25:20 +08:00
config OF_BOARD
bool "Provided by the board at runtime"
depends on !SANDBOX
help
If this option is enabled, the device tree will be provided by
the board at runtime if the board supports it, instead of being
bundled with the image.
kconfig: move CONFIG_OF_* to Kconfig This commit moves: CONFIG_OF_CONTROL CONFIG_OF_SEPARATE CONFIG_OF_EMBED CONFIG_OF_HOSTFILE Because these options are currently not supported for SPL, the "Device Tree Control" menu does not appear in the SPL configuration. Note: zynq-common.h should be adjusted so as not to change the default value of CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:05 +08:00
config OF_HOSTFILE
bool "Host filed DTB for DT control"
depends on SANDBOX
help
If this option is enabled, DTB will be read from a file on startup.
This is only useful for Sandbox. Use the -d flag to U-Boot to
specify the file to read.
board: arm: Add support for Broadcom BCM7445 Add support for loading U-Boot on the Broadcom 7445 SoC. This port assumes Broadcom's BOLT bootloader is acting as the second stage bootloader, and U-Boot is acting as the third stage bootloader, loaded as an ELF program by BOLT. Signed-off-by: Thomas Fitzsimmons <fitzsim@fitzsim.org> Cc: Stefan Roese <sr@denx.de> Cc: Tom Rini <trini@konsulko.com> Cc: Florian Fainelli <f.fainelli@gmail.com>
2018-06-09 05:59:45 +08:00
config OF_PRIOR_STAGE
bool "Prior stage bootloader DTB for DT control"
help
If this option is enabled, the device tree used for DT
control will be read from a device tree binary, at a memory
location passed to U-Boot by the prior stage bootloader.
kconfig: move CONFIG_OF_* to Kconfig This commit moves: CONFIG_OF_CONTROL CONFIG_OF_SEPARATE CONFIG_OF_EMBED CONFIG_OF_HOSTFILE Because these options are currently not supported for SPL, the "Device Tree Control" menu does not appear in the SPL configuration. Note: zynq-common.h should be adjusted so as not to change the default value of CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:05 +08:00
endchoice
kconfig: move CONFIG_DEFAULT_DEVICE_TREE to kconfig This option specifies the default Device Tree used for the run-time configuration of U-Boot. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:06 +08:00
config DEFAULT_DEVICE_TREE
string "Default Device Tree for DT control"
fdt: Adjust DEFAULT_DEVICE_TREE to device on OF_CONTROL This option has no meaning without OF_CONTROL, so add a dependency. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-02-23 13:55:44 +08:00
depends on OF_CONTROL
kconfig: move CONFIG_DEFAULT_DEVICE_TREE to kconfig This option specifies the default Device Tree used for the run-time configuration of U-Boot. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:06 +08:00
help
This option specifies the default Device Tree used for DT control.
Correct two non-functional misspellings "overrided". Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
2014-10-22 04:44:32 +08:00
It can be overridden from the command line:
kconfig: move CONFIG_DEFAULT_DEVICE_TREE to kconfig This option specifies the default Device Tree used for the run-time configuration of U-Boot. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:06 +08:00
$ make DEVICE_TREE=<device-tree-name>
spl: Add a way to specify a list of device trees to include When building a FIT, more than one device tree can be included. The board can select (at run-time) the one that it wants. Add a Kconfig option to allow the list of devices trees (supported by the board) to be specified. When using SPL_LOAD_FIT, build u-boot.img in FIT format instead of the legacy image format. Include all the listed device tree files in this FIT. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-02-23 13:55:57 +08:00
config OF_LIST
string "List of device tree files to include for DT control"
dts: renamed FIT_EMBED to MULTI_DTB_FIT and moved it to the dts Kconfig CONFIG_FIT_EMBED might be confused with CONFIG_OF_EMBED, rename it MULTI_DTB_FIT as it is able to get a DTB from a FIT image containing multiple DTBs. Also move the option to the Kconfig dedicated to the DTS options and create a README for this feature. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-15 18:57:24 +08:00
depends on SPL_LOAD_FIT || MULTI_DTB_FIT
spl: Setup default value for OF_LIST OF_LIST can't remain empty that's why setup it up to default DTB. If it is empty u-boot.img is created without FDT partition: For example: ./tools/mkimage -f auto -A arm -T firmware -C none -O u-boot -a 0x8000000 -e 0 -n "U-Boot 2016.05-rc3 ..." -E -b -d u-boot-nodtb.bin u-boot.img Can't set 'timestamp' property for '' node (FDT_ERR_NOSPACE) FIT description: Firmware image with one or more FDT blobs Created: Wed May 4 15:02:52 2016 Image 0 (firmware@1) Description: U-Boot 2016.05-rc3-00080-gff2e12ae22a8-dirty for zynqmp board Created: Wed May 4 15:02:52 2016 Type: Firmware Compression: uncompressed Data Size: unavailable Architecture: ARM Load Address: 0x08000000 Default Configuration: 'conf@1' Configuration 0 (conf@1) Description: unavailable Kernel: unavailable And then image like this doesn't contain description and link to FDT and can't boot. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-05-04 21:14:11 +08:00
default DEFAULT_DEVICE_TREE
spl: Add a way to specify a list of device trees to include When building a FIT, more than one device tree can be included. The board can select (at run-time) the one that it wants. Add a Kconfig option to allow the list of devices trees (supported by the board) to be specified. When using SPL_LOAD_FIT, build u-boot.img in FIT format instead of the legacy image format. Include all the listed device tree files in this FIT. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-02-23 13:55:57 +08:00
help
This option specifies a list of device tree files to use for DT
dts: Allow OF_LIST to depend on FIT_EMBED OF_LIST will be useable by SPL and U-boot. Therefore, update its dependency to allow it to be enable by either SPL or U-boot specific config option. Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-by: Andrew F. Davis <afd@ti.com>
2017-06-17 06:25:09 +08:00
control. These will be packaged into a FIT. At run-time, U-boot
or SPL will select the correct DT to use by examining the
hardware (e.g. reading a board ID value). This is a list of
device tree files (without the directory or .dtb suffix)
separated by <space>.
spl: Add a way to specify a list of device trees to include When building a FIT, more than one device tree can be included. The board can select (at run-time) the one that it wants. Add a Kconfig option to allow the list of devices trees (supported by the board) to be specified. When using SPL_LOAD_FIT, build u-boot.img in FIT format instead of the legacy image format. Include all the listed device tree files in this FIT. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-02-23 13:55:57 +08:00
dts: Add support for adding DT overlays in u-boot.img If u-boot.img is a FIT image, CONFIG_OF_OVERLAY_LIST can be used to add DT overlays to u-boot.img. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-10-22 22:39:21 +08:00
config OF_OVERLAY_LIST
string "List of device tree overlays to include for DT control"
depends on SPL_LOAD_FIT_APPLY_OVERLAY
help
This option specifies a list of device tree overlays to use for DT
control. This option can then be used by a FIT generator to include
the overlays in the FIT image.
lib: fdt: Allow LZO and GZIP DT compression in U-Boot Add required Kconfig symbols, Makefile bits and macro fixes in a few places to support LZO and DT compression in U-Boot. This can save a lot of space with multi-DTB fitImages. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@konsulko.com> Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
2019-03-08 23:06:55 +08:00
choice
dts: fix MULTI_DTB_FIT compression choice prompt This choice is not about SPL for which we have a separate choice. Fixes: 95f4bbd581 ("lib: fdt: Allow LZO and GZIP DT compression in U-Boot") Cc: Marek Vasut <marek.vasut+renesas@gmail.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il>
2019-10-07 20:05:47 +08:00
prompt "OF LIST compression"
lib: fdt: Allow LZO and GZIP DT compression in U-Boot Add required Kconfig symbols, Makefile bits and macro fixes in a few places to support LZO and DT compression in U-Boot. This can save a lot of space with multi-DTB fitImages. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@konsulko.com> Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
2019-03-08 23:06:55 +08:00
depends on MULTI_DTB_FIT
default MULTI_DTB_FIT_NO_COMPRESSION
config MULTI_DTB_FIT_LZO
bool "LZO"
depends on SYS_MALLOC_F
select LZO
help
Compress the FIT image containing the DTBs available for the SPL
using LZO compression. (requires lzop on host).
config MULTI_DTB_FIT_GZIP
bool "GZIP"
depends on SYS_MALLOC_F
select GZIP
help
Compress the FIT image containing the DTBs available for the SPL
using GZIP compression. (requires gzip on host)
config MULTI_DTB_FIT_NO_COMPRESSION
bool "No compression"
help
Do not compress the FIT image containing the DTBs available for the SPL.
Use this options only if LZO is not available and the DTBs are very small.
endchoice
choice
prompt "Location of uncompressed DTBs"
depends on (MULTI_DTB_FIT_GZIP || MULTI_DTB_FIT_LZO)
default MULTI_DTB_FIT_DYN_ALLOC if SYS_MALLOC_F
config MULTI_DTB_FIT_DYN_ALLOC
bool "Dynamically allocate the memory"
depends on SYS_MALLOC_F
config MULTI_DTB_FIT_USER_DEFINED_AREA
bool "User-defined location"
endchoice
config MULTI_DTB_FIT_UNCOMPRESS_SZ
hex "Size of memory reserved to uncompress the DTBs"
depends on (MULTI_DTB_FIT_GZIP || MULTI_DTB_FIT_LZO)
default 0x8000
help
This is the size of this area where the DTBs are uncompressed.
If this area is dynamically allocated, make sure that
SYS_MALLOC_F_LEN is big enough to contain it.
config MULTI_DTB_FIT_USER_DEF_ADDR
hex "Address of memory where dtbs are uncompressed"
depends on MULTI_DTB_FIT_USER_DEFINED_AREA
help
the FIT image containing the DTBs is uncompressed in an area defined
at compilation time. This is the address of this area. It must be
aligned on 2-byte boundary.
dts: renamed FIT_EMBED to MULTI_DTB_FIT and moved it to the dts Kconfig CONFIG_FIT_EMBED might be confused with CONFIG_OF_EMBED, rename it MULTI_DTB_FIT as it is able to get a DTB from a FIT image containing multiple DTBs. Also move the option to the Kconfig dedicated to the DTS options and create a README for this feature. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-15 18:57:24 +08:00
config DTB_RESELECT
bool "Support swapping dtbs at a later point in boot"
depends on MULTI_DTB_FIT
help
It is possible during initial boot you may need to use a generic
dtb until you can fully determine the board your running on. This
config allows boards to implement a function at a later point
during boot to switch to the "correct" dtb.
config MULTI_DTB_FIT
bool "Support embedding several DTBs in a FIT image for u-boot"
help
This option provides hooks to allow U-boot to parse an
appended FIT image and enable board specific code to then select
the correct DTB to be used. Use this if you need to support
multiple DTBs but don't use the SPL.
spl: dm: Make it possible for the SPL to pick its own DTB from a FIT u-boot can be embedded within a FIT image with multiple DTBs. It then selects at run-time which one is best suited for the platform. Use the same principle here for the SPL: put the DTBs in a FIT image, compress it (LZO, GZIP, or no compression) and append it at the end of the SPL. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> [trini: Move default y of SPL_MULTI_DTB_FIT_DYN_ALLOC to it being the default choice if SYS_MALLOC_F, drop spl.h include from lib/fdtdec.c it's unused.] Signed-off-by Tom Rini <trini@konsulko.com>
2017-09-15 18:57:32 +08:00
config SPL_MULTI_DTB_FIT
fdt: Create a new OF_REAL Kconfig The condition to indicate whether there is a runtime devicetree available is OF_CONTROL && !OF_PLATDATA. This is a bit unweidly and is repeated in a lot of places. Add a new OF_REAL Kconfig which provides this information directly. Note: This is similar in effect to LIBFDT. We might consider dropping LIBFDT and using this instead, but this is left for now as we also have OF_LIBFDT_OVERLAY which it would not make sense to change. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 21:24:02 +08:00
depends on SPL_LOAD_FIT && SPL_OF_REAL
spl: dm: Make it possible for the SPL to pick its own DTB from a FIT u-boot can be embedded within a FIT image with multiple DTBs. It then selects at run-time which one is best suited for the platform. Use the same principle here for the SPL: put the DTBs in a FIT image, compress it (LZO, GZIP, or no compression) and append it at the end of the SPL. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> [trini: Move default y of SPL_MULTI_DTB_FIT_DYN_ALLOC to it being the default choice if SYS_MALLOC_F, drop spl.h include from lib/fdtdec.c it's unused.] Signed-off-by Tom Rini <trini@konsulko.com>
2017-09-15 18:57:32 +08:00
bool "Support embedding several DTBs in a FIT image for the SPL"
help
This option provides the SPL with the ability to select its own
DTB at runtime from an appended FIT image containing several DTBs.
This allows using the same SPL binary on multiple platforms.
The primary purpose is to handle different versions of
the same platform without tweaking the platform code if the
differences can be expressed in the DTBs (common examples are: bus
capabilities, pad configurations).
config SPL_OF_LIST
string "List of device tree files to include for DT control in SPL"
depends on SPL_MULTI_DTB_FIT
default OF_LIST
help
This option specifies a list of device tree files to use for DT
control in the SPL. These will be packaged into a FIT. At run-time,
the SPL will select the correct DT to use by examining the
hardware (e.g. reading a board ID value). This is a list of
device tree files (without the directory or .dtb suffix)
separated by <space>.
choice
prompt "SPL OF LIST compression"
depends on SPL_MULTI_DTB_FIT
default SPL_MULTI_DTB_FIT_LZO
config SPL_MULTI_DTB_FIT_LZO
bool "LZO"
depends on SYS_MALLOC_F
select SPL_LZO
help
Compress the FIT image containing the DTBs available for the SPL
using LZO compression. (requires lzop on host).
config SPL_MULTI_DTB_FIT_GZIP
bool "GZIP"
depends on SYS_MALLOC_F
select SPL_GZIP
help
Compress the FIT image containing the DTBs available for the SPL
using GZIP compression. (requires gzip on host)
config SPL_MULTI_DTB_FIT_NO_COMPRESSION
bool "No compression"
help
Do not compress the FIT image containing the DTBs available for the SPL.
Use this options only if LZO is not available and the DTBs are very small.
endchoice
choice
Kconfig: Remove trailing whitespaces in prompt Remove additional trailing whitespaces in prompt reported by kconfiglib: warning: DM_PMIC_SANDBOX (defined at drivers/power/pmic/Kconfig:133) has leading or trailing whitespace in its prompt warning: <choice> (defined at dts/Kconfig:204) has leading or trailing whitespace in its prompt Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Felix Brack <fb@ltec.ch>
2018-07-23 14:38:56 +08:00
prompt "Location of uncompressed DTBs"
spl: dm: Make it possible for the SPL to pick its own DTB from a FIT u-boot can be embedded within a FIT image with multiple DTBs. It then selects at run-time which one is best suited for the platform. Use the same principle here for the SPL: put the DTBs in a FIT image, compress it (LZO, GZIP, or no compression) and append it at the end of the SPL. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> [trini: Move default y of SPL_MULTI_DTB_FIT_DYN_ALLOC to it being the default choice if SYS_MALLOC_F, drop spl.h include from lib/fdtdec.c it's unused.] Signed-off-by Tom Rini <trini@konsulko.com>
2017-09-15 18:57:32 +08:00
depends on (SPL_MULTI_DTB_FIT_GZIP || SPL_MULTI_DTB_FIT_LZO)
default SPL_MULTI_DTB_FIT_DYN_ALLOC if SYS_MALLOC_F
config SPL_MULTI_DTB_FIT_DYN_ALLOC
bool "Dynamically allocate the memory"
depends on SYS_MALLOC_F
config SPL_MULTI_DTB_FIT_USER_DEFINED_AREA
bool "User-defined location"
endchoice
config SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ
hex "Size of memory reserved to uncompress the DTBs"
depends on (SPL_MULTI_DTB_FIT_GZIP || SPL_MULTI_DTB_FIT_LZO)
default 0x8000
help
This is the size of this area where the DTBs are uncompressed.
If this area is dynamically allocated, make sure that
SPL_SYS_MALLOC_F_LEN is big enough to contain it.
config SPL_MULTI_DTB_FIT_USER_DEF_ADDR
hex "Address of memory where dtbs are uncompressed"
depends on SPL_MULTI_DTB_FIT_USER_DEFINED_AREA
help
the FIT image containing the DTBs is uncompressed in an area defined
at compilation time. This is the address of this area. It must be
aligned on 2-byte boundary.
dm: Reduce SPL device tree size The SPL device tree size must be minimised to save memory. Only include properties that are needed by SPL - this is determined by the presence of the "u-boot,dm-pre-reloc" property. Also remove a predefined list of unused properties from the nodes that remain. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-06-24 05:38:29 +08:00
config OF_SPL_REMOVE_PROPS
string "List of device tree properties to drop for SPL"
dts: fix dependency of OF_SPL_REMOVE_PROPS This should depend on SPL_OF_CONTROL (it is not equivalent to SPL && OF_CONTROL). Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
2015-08-28 19:28:42 +08:00
depends on SPL_OF_CONTROL
dm: Also remove interrupts property from SPL DT interrupt-parent property is removed already that's why there is no reason to keep interrupts property if parent doesn't exist. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-02-22 17:50:23 +08:00
default "interrupt-parent interrupts" if SPL_PINCTRL && SPL_CLK
default "clocks clock-names interrupt-parent interrupts" if SPL_PINCTRL
default "pinctrl-0 pinctrl-names interrupt-parent interrupts" if SPL_CLK
default "pinctrl-0 pinctrl-names clocks clock-names interrupt-parent interrupts"
dm: Reduce SPL device tree size The SPL device tree size must be minimised to save memory. Only include properties that are needed by SPL - this is determined by the presence of the "u-boot,dm-pre-reloc" property. Also remove a predefined list of unused properties from the nodes that remain. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-06-24 05:38:29 +08:00
help
Since SPL normally runs in a reduced memory space, the device tree
is cut down to only what is needed to load and start U-Boot. Only
nodes marked with the property "u-boot,dm-pre-reloc" will be
included. In addition, some properties are not used by U-Boot and
can be discarded. This option defines the list of properties to
discard.
dts: add property removal option CONFIG_OF_REMOVE_PROPS This can be used for device tree size reduction similar as CONFIG_OF_SPL_REMOVE_PROPS option. Some boards must pass the built-in DTB unchanged to the kernel, thus we may not cut it down unconditionally. Therefore enable the property removal list option only if CONFIG_OF_DTB_PROPS_REMOVE is selected. Signed-off-by: Anatolij Gustschin <agust@denx.de>
2020-01-12 22:57:42 +08:00
config OF_DTB_PROPS_REMOVE
bool "Enable removal of device tree properties"
depends on OF_CONTROL
help
Some boards have restricted amount of storage for U-Boot image.
If the generated binary doesn't fit into available image storage,
the built-in device tree could probably be cut down by removing
some not required device tree properties to reduce the image size.
Enable this option and define the properties to be removed in the
CONFIG_OF_REMOVE_PROPS list. Do not enable this option if you must
pass the built-in DTB directly to the kernel!
config OF_REMOVE_PROPS
string "List of device tree properties to drop"
depends on OF_DTB_PROPS_REMOVE
default "interrupt-parent interrupts" if PINCTRL
help
Some properties are not used by U-Boot and can be discarded.
This option defines the list of properties to discard.
dm: Add an option to enable the of-platdata feature Add a Kconfig option to enable this feature. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-05 01:58:06 +08:00
config SPL_OF_PLATDATA
bool "Generate platform data for use in SPL"
depends on SPL_OF_CONTROL
pylibfdt: compile pylibfdt only when dtoc/binman is necessary Currently, pylibfdt is always compiled if swig is installed on your machine. It is really annoying because most of targets (excepts x86, sunxi, rockchip) do not use dtoc or binman. "checkbinman" and "checkdtoc" are wrong. It is odd that the final build stage checks if we have built necessary tools. If your platform depends on dtoc/binman, you must be able to build pylibfdt. If swig is not installed, it should fail immediately. I added PYLIBFDT, DTOC, BINMAN entries to Kconfig. They should be property select:ed by platforms that need them. Kbuild will descend into scripts/dtc/pylibfdt/ only when CONFIG_PYLIBFDT is enabled. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-10-17 12:42:44 +08:00
select DTOC
dm: core: Create a struct for device runtime info At present when driver model needs to change a device it simply updates the struct udevice structure. But with of-platdata-inst most of the fields are not modified at runtime. In fact, typically only the flags need to change. For systems running SPL from read-only memory it is convenient to separate out the runtime information, so that the devices don't need to be copied before being used. Create a new udevice_rt table, similar to the existing driver_rt. For now it just holds the flags, although they are not used in this patch. Add a new Kconfig for the driver_rt data, since this is not needed when of-platdata-inst is used. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2021-03-15 12:25:36 +08:00
select SPL_OF_PLATDATA_DRIVER_RT if !SPL_OF_PLATDATA_INST
dm: Add an option to enable the of-platdata feature Add a Kconfig option to enable this feature. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-05 01:58:06 +08:00
help
For very constrained SPL environments the overhead of decoding
device tree nodes and converting their contents into platform data
is too large. This overhead includes libfdt code as well as the
device tree contents itself. The latter is fairly compact, but the
former can add 3KB or more to a Thumb 2 Image.
This option enables generation of platform data from the device
dm: Rename U_BOOT_DEVICE() to U_BOOT_DRVINFO() The current macro is a misnomer since it does not declare a device directly. Instead, it declares driver_info record which U-Boot uses at runtime to create a device. The distinction seems somewhat minor most of the time, but is becomes quite confusing when we actually want to declare a device, with of-platdata. We are left trying to distinguish between a device which isn't actually device, and a device that is (perhaps an 'instance'?) It seems better to rename this macro to describe what it actually is. The macros is not widely used, since boards should use devicetree to declare devices. Rename it to U_BOOT_DRVINFO(), which indicates clearly that this is declaring a new driver_info record, not a device. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-29 11:34:54 +08:00
tree as C code. This code creates devices using U_BOOT_DRVINFO()
dm: Add an option to enable the of-platdata feature Add a Kconfig option to enable this feature. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-05 01:58:06 +08:00
declarations. The benefit is that it allows driver code to access
the platform data directly in C structures, avoidin the libfdt
overhead.
This option works by generating C structure declarations for each
dm: Rename U_BOOT_DEVICE() to U_BOOT_DRVINFO() The current macro is a misnomer since it does not declare a device directly. Instead, it declares driver_info record which U-Boot uses at runtime to create a device. The distinction seems somewhat minor most of the time, but is becomes quite confusing when we actually want to declare a device, with of-platdata. We are left trying to distinguish between a device which isn't actually device, and a device that is (perhaps an 'instance'?) It seems better to rename this macro to describe what it actually is. The macros is not widely used, since boards should use devicetree to declare devices. Rename it to U_BOOT_DRVINFO(), which indicates clearly that this is declaring a new driver_info record, not a device. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-29 11:34:54 +08:00
compatible string, then adding platform data and U_BOOT_DRVINFO
of-platdata: improve documentation Improve some things in the documentation of OF_PLATDATA that I found while porting socfgpa_gen5 to it. Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-01-17 03:40:18 +08:00
declarations for each node. See of-plat.txt for more information.
dm: Add an option to enable the of-platdata feature Add a Kconfig option to enable this feature. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-05 01:58:06 +08:00
fdt: Create a new OF_REAL Kconfig The condition to indicate whether there is a runtime devicetree available is OF_CONTROL && !OF_PLATDATA. This is a bit unweidly and is repeated in a lot of places. Add a new OF_REAL Kconfig which provides this information directly. Note: This is similar in effect to LIBFDT. We might consider dropping LIBFDT and using this instead, but this is left for now as we also have OF_LIBFDT_OVERLAY which it would not make sense to change. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 21:24:02 +08:00
config SPL_OF_REAL
bool
help
Indicates that a real devicetree is available which can be accessed
at runtime. This means that dev_read_...() functions can be used to
read data from the devicetree for each device. This is true if
SPL_OF_CONTROL is enabled and not SPL_OF_PLATDATA
dm: of-platadata: Add option for device instantiation Add Kconfig options to support build-time device instantiation. When fully implemented, this will allow dtoc to create U-Boot devices (i.e. struct udevice records) at build time, thus reducing code space in SPL. For now this defaults to off, but will be enabled when the rest of the implementation is in place. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-02-03 21:01:13 +08:00
if SPL_OF_PLATDATA
dm: Support parent devices with of-platdata At present of-platdata does not provide parent information. But this is useful for I2C devices, for example, since it allows them to determine which bus they are on. Add support for setting the parent correctly, by storing the parent driver_info index in dtoc and reading this in lists_bind_drivers(). This needs multiple passes since we must process children after their parents already have been bound. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-10-04 01:31:35 +08:00
config SPL_OF_PLATDATA_PARENT
bool "Support parent information in devices"
default y
help
Generally it is useful to be able to access the parent of a device
with of-platdata. To save space this can be disabled, but in that
case dev_get_parent() will always return NULL;
dm: of-platadata: Add option for device instantiation Add Kconfig options to support build-time device instantiation. When fully implemented, this will allow dtoc to create U-Boot devices (i.e. struct udevice records) at build time, thus reducing code space in SPL. For now this defaults to off, but will be enabled when the rest of the implementation is in place. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-02-03 21:01:13 +08:00
config SPL_OF_PLATDATA_INST
bool "Declare devices at build time"
help
Declare devices as udevice instances so that they do not need to be
bound when U-Boot starts. This can save time and code space.
dm: core: Allow dropping run-time binding of devices With OF_PLATDATA_INST devices are bound at build time. We should not need binding of devices at runtime in most cases. However it is inflexible to absolutely prohibit it, so add an option to control this. Update the driver model core so that it does not bind devices. Update device_bind() to return an error if called. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2021-03-15 12:25:15 +08:00
config SPL_OF_PLATDATA_NO_BIND
bool "Don't allow run-time binding of devices"
depends on SPL_OF_PLATDATA_INST
default y
help
This removes the ability to bind devices at run time, thus saving
some code space in U-Boot. This can be disabled if binding is needed,
at the code of some code size increase.
dm: core: Add an option to support SPL in read-only memory Some systems (e.g. x86 APL) run SPL from read-only memory. The device instances created by dtoc are therefore not writeable. To make things work we would need to copy the devices to read/write memory. To avoid this, add an option to use a separate runtime struct for devices, just as is done for drivers. This can be used to hold information that changes at runtime, avoiding the need for a copy. Also add a Kconfig option for read-only SPL, which selects this feature. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2021-03-15 12:25:35 +08:00
config SPL_OF_PLATDATA_RT
bool "Use a separate struct for device runtime data"
depends on SPL_OF_PLATDATA_INST
default y
help
For systems running SPL from read-only memory it is convenient to
separate out the runtime information, so that the devices don't need
to be copied before being used. This moves the read-write parts of
struct udevice (at present just the flags) into a separate struct,
which is allocated at runtime.
dm: core: Create a struct for device runtime info At present when driver model needs to change a device it simply updates the struct udevice structure. But with of-platdata-inst most of the fields are not modified at runtime. In fact, typically only the flags need to change. For systems running SPL from read-only memory it is convenient to separate out the runtime information, so that the devices don't need to be copied before being used. Create a new udevice_rt table, similar to the existing driver_rt. For now it just holds the flags, although they are not used in this patch. Add a new Kconfig for the driver_rt data, since this is not needed when of-platdata-inst is used. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2021-03-15 12:25:36 +08:00
config SPL_OF_PLATDATA_DRIVER_RT
bool
help
Use a separate struct for driver runtime data.
This enables the driver_rt information, used with of-platdata when
of-platdata-inst is not used. It allows finding devices by their
driver data.
dm: of-platadata: Add option for device instantiation Add Kconfig options to support build-time device instantiation. When fully implemented, this will allow dtoc to create U-Boot devices (i.e. struct udevice records) at build time, thus reducing code space in SPL. For now this defaults to off, but will be enabled when the rest of the implementation is in place. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-02-03 21:01:13 +08:00
endif
fdt: Create a new OF_REAL Kconfig The condition to indicate whether there is a runtime devicetree available is OF_CONTROL && !OF_PLATDATA. This is a bit unweidly and is repeated in a lot of places. Add a new OF_REAL Kconfig which provides this information directly. Note: This is similar in effect to LIBFDT. We might consider dropping LIBFDT and using this instead, but this is left for now as we also have OF_LIBFDT_OVERLAY which it would not make sense to change. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 21:24:02 +08:00
config TPL_OF_REAL
bool
help
Indicates that a real devicetree is available which can be accessed
at runtime. This means that dev_read_...() functions can be used to
read data from the devicetree for each device. This is true if
TPL_OF_CONTROL is enabled and not TPL_OF_PLATDATA
spl: dm: Kconfig: split OF_CONTROL and OF_PLATDATA between SPL and TPL For the RK3368, we want to use OF_PLATDATA in TPL, but full OF_CONTROL in SPL: this requires the introduction of a new family of configuration options to decouple SPL_OF_CONTROL and SPL_OF_PLATDATA from TPL. Consequently, Makefile.spl needs to be adjusted to test for these configuration items through the $(SPL_TPL_) macro instead of hard-coding the SPL variant. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-06-29 17:11:21 +08:00
config TPL_OF_PLATDATA
bool "Generate platform data for use in TPL"
depends on TPL_OF_CONTROL
pylibfdt: compile pylibfdt only when dtoc/binman is necessary Currently, pylibfdt is always compiled if swig is installed on your machine. It is really annoying because most of targets (excepts x86, sunxi, rockchip) do not use dtoc or binman. "checkbinman" and "checkdtoc" are wrong. It is odd that the final build stage checks if we have built necessary tools. If your platform depends on dtoc/binman, you must be able to build pylibfdt. If swig is not installed, it should fail immediately. I added PYLIBFDT, DTOC, BINMAN entries to Kconfig. They should be property select:ed by platforms that need them. Kbuild will descend into scripts/dtc/pylibfdt/ only when CONFIG_PYLIBFDT is enabled. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-10-17 12:42:44 +08:00
select DTOC
dm: core: Create a struct for device runtime info At present when driver model needs to change a device it simply updates the struct udevice structure. But with of-platdata-inst most of the fields are not modified at runtime. In fact, typically only the flags need to change. For systems running SPL from read-only memory it is convenient to separate out the runtime information, so that the devices don't need to be copied before being used. Create a new udevice_rt table, similar to the existing driver_rt. For now it just holds the flags, although they are not used in this patch. Add a new Kconfig for the driver_rt data, since this is not needed when of-platdata-inst is used. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2021-03-15 12:25:36 +08:00
select TPL_OF_PLATDATA_DRIVER_RT if !TPL_OF_PLATDATA_INST
spl: dm: Kconfig: split OF_CONTROL and OF_PLATDATA between SPL and TPL For the RK3368, we want to use OF_PLATDATA in TPL, but full OF_CONTROL in SPL: this requires the introduction of a new family of configuration options to decouple SPL_OF_CONTROL and SPL_OF_PLATDATA from TPL. Consequently, Makefile.spl needs to be adjusted to test for these configuration items through the $(SPL_TPL_) macro instead of hard-coding the SPL variant. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-06-29 17:11:21 +08:00
help
For very constrained SPL environments the overhead of decoding
device tree nodes and converting their contents into platform data
is too large. This overhead includes libfdt code as well as the
device tree contents itself. The latter is fairly compact, but the
former can add 3KB or more to a Thumb 2 Image.
This option enables generation of platform data from the device
dm: Rename U_BOOT_DEVICE() to U_BOOT_DRVINFO() The current macro is a misnomer since it does not declare a device directly. Instead, it declares driver_info record which U-Boot uses at runtime to create a device. The distinction seems somewhat minor most of the time, but is becomes quite confusing when we actually want to declare a device, with of-platdata. We are left trying to distinguish between a device which isn't actually device, and a device that is (perhaps an 'instance'?) It seems better to rename this macro to describe what it actually is. The macros is not widely used, since boards should use devicetree to declare devices. Rename it to U_BOOT_DRVINFO(), which indicates clearly that this is declaring a new driver_info record, not a device. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-29 11:34:54 +08:00
tree as C code. This code creates devices using U_BOOT_DRVINFO()
spl: dm: Kconfig: split OF_CONTROL and OF_PLATDATA between SPL and TPL For the RK3368, we want to use OF_PLATDATA in TPL, but full OF_CONTROL in SPL: this requires the introduction of a new family of configuration options to decouple SPL_OF_CONTROL and SPL_OF_PLATDATA from TPL. Consequently, Makefile.spl needs to be adjusted to test for these configuration items through the $(SPL_TPL_) macro instead of hard-coding the SPL variant. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-06-29 17:11:21 +08:00
declarations. The benefit is that it allows driver code to access
the platform data directly in C structures, avoidin the libfdt
overhead.
This option works by generating C structure declarations for each
dm: Rename U_BOOT_DEVICE() to U_BOOT_DRVINFO() The current macro is a misnomer since it does not declare a device directly. Instead, it declares driver_info record which U-Boot uses at runtime to create a device. The distinction seems somewhat minor most of the time, but is becomes quite confusing when we actually want to declare a device, with of-platdata. We are left trying to distinguish between a device which isn't actually device, and a device that is (perhaps an 'instance'?) It seems better to rename this macro to describe what it actually is. The macros is not widely used, since boards should use devicetree to declare devices. Rename it to U_BOOT_DRVINFO(), which indicates clearly that this is declaring a new driver_info record, not a device. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-29 11:34:54 +08:00
compatible string, then adding platform data and U_BOOT_DRVINFO
of-platdata: improve documentation Improve some things in the documentation of OF_PLATDATA that I found while porting socfgpa_gen5 to it. Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-01-17 03:40:18 +08:00
declarations for each node. See of-plat.txt for more information.
spl: dm: Kconfig: split OF_CONTROL and OF_PLATDATA between SPL and TPL For the RK3368, we want to use OF_PLATDATA in TPL, but full OF_CONTROL in SPL: this requires the introduction of a new family of configuration options to decouple SPL_OF_CONTROL and SPL_OF_PLATDATA from TPL. Consequently, Makefile.spl needs to be adjusted to test for these configuration items through the $(SPL_TPL_) macro instead of hard-coding the SPL variant. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-06-29 17:11:21 +08:00
dm: of-platadata: Add option for device instantiation Add Kconfig options to support build-time device instantiation. When fully implemented, this will allow dtoc to create U-Boot devices (i.e. struct udevice records) at build time, thus reducing code space in SPL. For now this defaults to off, but will be enabled when the rest of the implementation is in place. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-02-03 21:01:13 +08:00
if TPL_OF_PLATDATA
dm: Support parent devices with of-platdata At present of-platdata does not provide parent information. But this is useful for I2C devices, for example, since it allows them to determine which bus they are on. Add support for setting the parent correctly, by storing the parent driver_info index in dtoc and reading this in lists_bind_drivers(). This needs multiple passes since we must process children after their parents already have been bound. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-10-04 01:31:35 +08:00
config TPL_OF_PLATDATA_PARENT
bool "Support parent information in devices"
default y
help
Generally it is useful to be able to access the parent of a device
with of-platdata. To save space this can be disabled, but in that
case dev_get_parent() will always return NULL;
dm: of-platadata: Add option for device instantiation Add Kconfig options to support build-time device instantiation. When fully implemented, this will allow dtoc to create U-Boot devices (i.e. struct udevice records) at build time, thus reducing code space in SPL. For now this defaults to off, but will be enabled when the rest of the implementation is in place. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-02-03 21:01:13 +08:00
config TPL_OF_PLATDATA_INST
bool "Declare devices at build time"
help
Declare devices as udevice instances so that they do not need to be
bound when U-Boot starts. This can save time and code space.
dm: core: Allow dropping run-time binding of devices With OF_PLATDATA_INST devices are bound at build time. We should not need binding of devices at runtime in most cases. However it is inflexible to absolutely prohibit it, so add an option to control this. Update the driver model core so that it does not bind devices. Update device_bind() to return an error if called. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2021-03-15 12:25:15 +08:00
config TPL_OF_PLATDATA_NO_BIND
bool "Don't allow run-time binding of devices"
depends on TPL_OF_PLATDATA_INST
default y
help
This removes the ability to bind devices at run time, thus saving
some code space in U-Boot. This can be disabled if binding is needed,
at the code of some code size increase.
dm: core: Add an option to support SPL in read-only memory Some systems (e.g. x86 APL) run SPL from read-only memory. The device instances created by dtoc are therefore not writeable. To make things work we would need to copy the devices to read/write memory. To avoid this, add an option to use a separate runtime struct for devices, just as is done for drivers. This can be used to hold information that changes at runtime, avoiding the need for a copy. Also add a Kconfig option for read-only SPL, which selects this feature. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2021-03-15 12:25:35 +08:00
config TPL_OF_PLATDATA_RT
bool "Use a separate struct for device runtime data"
depends on TPL_OF_PLATDATA_INST
default y
help
For systems running TPL from read-only memory it is convenient to
separate out the runtime information, so that the devices don't need
to be copied before being used. This moves the read-write parts of
struct udevice (at present just the flags) into a separate struct,
which is allocated at runtime.
dm: core: Create a struct for device runtime info At present when driver model needs to change a device it simply updates the struct udevice structure. But with of-platdata-inst most of the fields are not modified at runtime. In fact, typically only the flags need to change. For systems running SPL from read-only memory it is convenient to separate out the runtime information, so that the devices don't need to be copied before being used. Create a new udevice_rt table, similar to the existing driver_rt. For now it just holds the flags, although they are not used in this patch. Add a new Kconfig for the driver_rt data, since this is not needed when of-platdata-inst is used. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2021-03-15 12:25:36 +08:00
config TPL_OF_PLATDATA_DRIVER_RT
bool
help
Use a separate struct for driver runtime data.
This enables the driver_rt information, used with of-platdata when
of-platdata-inst is not used. It allows finding devices by their
driver data.
dm: of-platadata: Add option for device instantiation Add Kconfig options to support build-time device instantiation. When fully implemented, this will allow dtoc to create U-Boot devices (i.e. struct udevice records) at build time, thus reducing code space in SPL. For now this defaults to off, but will be enabled when the rest of the implementation is in place. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-02-03 21:01:13 +08:00
endif
kconfig: move CONFIG_OF_* to Kconfig This commit moves: CONFIG_OF_CONTROL CONFIG_OF_SEPARATE CONFIG_OF_EMBED CONFIG_OF_HOSTFILE Because these options are currently not supported for SPL, the "Device Tree Control" menu does not appear in the SPL configuration. Note: zynq-common.h should be adjusted so as not to change the default value of CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Simon Glass <sjg@chromium.org> Cc: Stephen Warren <swarren@nvidia.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
2014-09-22 18:59:05 +08:00
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