mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 02:08:38 +00:00
6792bd999b
This is needed in the platforms that use "ranges" node property for address translation in their dts for TPL. Signed-off-by: William Zhang <william.zhang@broadcom.com> Reviewed-by: Simon Glass <sjg@chromium.org>
462 lines
16 KiB
Text
462 lines
16 KiB
Text
menu "Generic Driver Options"
|
|
|
|
config DM
|
|
def_bool y
|
|
help
|
|
This config option enables Driver Model. This brings in the core
|
|
support, including scanning of platform data on start-up. If
|
|
CONFIG_OF_CONTROL is enabled, the device tree will be scanned also
|
|
when available.
|
|
|
|
config SPL_DM
|
|
bool "Enable Driver Model for SPL"
|
|
depends on DM && SPL
|
|
help
|
|
Enable driver model in SPL. You will need to provide a
|
|
suitable malloc() implementation. If you are not using the
|
|
full malloc() enabled by CONFIG_SYS_SPL_MALLOC_START,
|
|
consider using CONFIG_SPL_SYS_MALLOC_SIMPLE. In that case you
|
|
must provide CONFIG_SPL_SYS_MALLOC_F_LEN to set the size.
|
|
In most cases driver model will only allocate a few uclasses
|
|
and devices in SPL, so 1KB should be enough. See
|
|
CONFIG_SPL_SYS_MALLOC_F_LEN for more details on how to enable it.
|
|
|
|
config TPL_DM
|
|
bool "Enable Driver Model for TPL"
|
|
depends on DM && TPL
|
|
help
|
|
Enable driver model in TPL. You will need to provide a
|
|
suitable malloc() implementation. If you are not using the
|
|
full malloc() enabled by CONFIG_SYS_SPL_MALLOC_START,
|
|
consider using CONFIG_TPL_SYS_MALLOC_SIMPLE. In that case you
|
|
must provide CONFIG_SPL_SYS_MALLOC_F_LEN to set the size.
|
|
In most cases driver model will only allocate a few uclasses
|
|
and devices in SPL, so 1KB should be enough. See
|
|
CONFIG_SPL_SYS_MALLOC_F_LEN for more details on how to enable it.
|
|
Disable this for very small implementations.
|
|
|
|
config VPL_DM
|
|
bool "Enable Driver Model for VPL"
|
|
depends on DM && VPL
|
|
default y if SPL_DM
|
|
help
|
|
Enable driver model in VPL. You will need to provide a
|
|
suitable malloc() implementation. If you are not using the
|
|
full malloc() enabled by CONFIG_SYS_SPL_MALLOC_START,
|
|
consider using CONFIG_SPL_SYS_MALLOC_SIMPLE.
|
|
|
|
config DM_WARN
|
|
bool "Enable warnings in driver model"
|
|
depends on DM
|
|
default y
|
|
help
|
|
Enable this to see warnings related to driver model.
|
|
|
|
Warnings may help with debugging, such as when expected devices do
|
|
not bind correctly. If the option is disabled, dm_warn() is compiled
|
|
out - it will do nothing when called.
|
|
|
|
config SPL_DM_WARN
|
|
bool "Enable warnings in driver model wuth SPL"
|
|
depends on SPL_DM
|
|
help
|
|
Enable this to see warnings related to driver model in SPL
|
|
|
|
The dm_warn() function can use up quite a bit of space for its
|
|
strings. By default this is disabled for SPL builds to save space.
|
|
|
|
Warnings may help with debugging, such as when expected devices do
|
|
not bind correctly. If the option is disabled, dm_warn() is compiled
|
|
out - it will do nothing when called.
|
|
|
|
config DM_DEBUG
|
|
bool "Enable debug messages in driver model core"
|
|
depends on DM
|
|
help
|
|
Say Y here if you want to compile in debug messages in DM core.
|
|
|
|
config DM_STATS
|
|
bool "Collect and show driver model stats"
|
|
depends on DM
|
|
default y if SANDBOX
|
|
help
|
|
Enable this to collect and display memory statistics about driver
|
|
model. This can help to figure out where all the memory is going and
|
|
to find optimisations.
|
|
|
|
To display the memory stats, use the 'dm mem' command.
|
|
|
|
config SPL_DM_STATS
|
|
bool "Collect and show driver model stats in SPL"
|
|
depends on DM_SPL
|
|
help
|
|
Enable this to collect and display memory statistics about driver
|
|
model. This can help to figure out where all the memory is going and
|
|
to find optimisations.
|
|
|
|
The stats are displayed just before SPL boots to the next phase.
|
|
|
|
config DM_DEVICE_REMOVE
|
|
bool "Support device removal"
|
|
depends on DM
|
|
default y
|
|
help
|
|
We can save some code space by dropping support for removing a
|
|
device.
|
|
|
|
Note that this may have undesirable results in the USB subsystem as
|
|
it causes unplugged devices to linger around in the dm-tree, and it
|
|
causes USB host controllers to not be stopped when booting the OS.
|
|
|
|
config DM_EVENT
|
|
bool "Support events with driver model"
|
|
depends on DM && EVENT
|
|
default y if SANDBOX
|
|
help
|
|
This enables support for generating events related to driver model
|
|
operations, such as prbing or removing a device. Subsystems can
|
|
register a 'spy' function that is called when the event occurs.
|
|
|
|
config SPL_DM_DEVICE_REMOVE
|
|
bool "Support device removal in SPL"
|
|
depends on SPL_DM
|
|
help
|
|
We can save some code space by dropping support for removing a
|
|
device. This is not normally required in SPL, so by default this
|
|
option is disabled for SPL.
|
|
|
|
config DM_STDIO
|
|
bool "Support stdio registration"
|
|
depends on DM
|
|
default y
|
|
help
|
|
Normally serial drivers register with stdio so that they can be used
|
|
as normal output devices. In SPL we don't normally use stdio, so
|
|
we can omit this feature.
|
|
|
|
config DM_SEQ_ALIAS
|
|
bool "Support numbered aliases in device tree"
|
|
depends on DM
|
|
default y
|
|
help
|
|
Most boards will have a '/aliases' node containing the path to
|
|
numbered devices (e.g. serial0 = &serial0). This feature can be
|
|
disabled if it is not required.
|
|
|
|
config SPL_DM_SEQ_ALIAS
|
|
bool "Support numbered aliases in device tree in SPL"
|
|
depends on SPL_DM
|
|
help
|
|
Most boards will have a '/aliases' node containing the path to
|
|
numbered devices (e.g. serial0 = &serial0). This feature can be
|
|
disabled if it is not required, to save code space in SPL.
|
|
|
|
config VPL_DM_SEQ_ALIAS
|
|
bool "Support numbered aliases in device tree in VPL"
|
|
depends on VPL_DM
|
|
default y
|
|
help
|
|
Most boards will have a '/aliases' node containing the path to
|
|
numbered devices (e.g. serial0 = &serial0). This feature can be
|
|
disabled if it is not required, to save code space in VPL.
|
|
|
|
config SPL_DM_INLINE_OFNODE
|
|
bool "Inline some ofnode functions which are seldom used in SPL"
|
|
depends on SPL_DM
|
|
default y
|
|
help
|
|
This applies to several ofnode functions (see ofnode.h) which are
|
|
seldom used. Inlining them can help reduce code size.
|
|
|
|
config TPL_DM_INLINE_OFNODE
|
|
bool "Inline some ofnode functions which are seldom used in TPL"
|
|
depends on TPL_DM
|
|
default y
|
|
help
|
|
This applies to several ofnode functions (see ofnode.h) which are
|
|
seldom used. Inlining them can help reduce code size.
|
|
|
|
config DM_DMA
|
|
bool "Support per-device DMA constraints"
|
|
depends on DM
|
|
help
|
|
Enable this to extract per-device DMA constraints, only supported on
|
|
device-tree systems for now. This is needed in order translate
|
|
addresses on systems where different buses have different views of
|
|
the physical address space.
|
|
|
|
config REGMAP
|
|
bool "Support register maps"
|
|
depends on DM
|
|
help
|
|
Hardware peripherals tend to have one or more sets of registers
|
|
which can be accessed to control the hardware. A register map
|
|
models this with a simple read/write interface. It can in principle
|
|
support any bus type (I2C, SPI) but so far this only supports
|
|
direct memory access.
|
|
|
|
config SPL_REGMAP
|
|
bool "Support register maps in SPL"
|
|
depends on SPL_DM
|
|
help
|
|
Hardware peripherals tend to have one or more sets of registers
|
|
which can be accessed to control the hardware. A register map
|
|
models this with a simple read/write interface. It can in principle
|
|
support any bus type (I2C, SPI) but so far this only supports
|
|
direct memory access.
|
|
|
|
config TPL_REGMAP
|
|
bool "Support register maps in TPL"
|
|
depends on TPL_DM
|
|
help
|
|
Hardware peripherals tend to have one or more sets of registers
|
|
which can be accessed to control the hardware. A register map
|
|
models this with a simple read/write interface. It can in principle
|
|
support any bus type (I2C, SPI) but so far this only supports
|
|
direct memory access.
|
|
|
|
config VPL_REGMAP
|
|
bool "Support register maps in VPL"
|
|
depends on VPL_DM
|
|
help
|
|
Hardware peripherals tend to have one or more sets of registers
|
|
which can be accessed to control the hardware. A register map
|
|
models this with a simple read/write interface. It can in principle
|
|
support any bus type (I2C, SPI) but so far this only supports
|
|
direct memory access.
|
|
|
|
config SYSCON
|
|
bool "Support system controllers"
|
|
depends on REGMAP
|
|
help
|
|
Many SoCs have a number of system controllers which are dealt with
|
|
as a group by a single driver. Some common functionality is provided
|
|
by this uclass, including accessing registers via regmap and
|
|
assigning a unique number to each.
|
|
|
|
config SPL_SYSCON
|
|
bool "Support system controllers in SPL"
|
|
depends on SPL_REGMAP
|
|
help
|
|
Many SoCs have a number of system controllers which are dealt with
|
|
as a group by a single driver. Some common functionality is provided
|
|
by this uclass, including accessing registers via regmap and
|
|
assigning a unique number to each.
|
|
|
|
config TPL_SYSCON
|
|
bool "Support system controllers in TPL"
|
|
depends on TPL_REGMAP
|
|
help
|
|
Many SoCs have a number of system controllers which are dealt with
|
|
as a group by a single driver. Some common functionality is provided
|
|
by this uclass, including accessing registers via regmap and
|
|
assigning a unique number to each.
|
|
|
|
config VPL_SYSCON
|
|
bool "Support system controllers in VPL"
|
|
depends on VPL_REGMAP
|
|
help
|
|
Many SoCs have a number of system controllers which are dealt with
|
|
as a group by a single driver. Some common functionality is provided
|
|
by this uclass, including accessing registers via regmap and
|
|
assigning a unique number to each.
|
|
|
|
config DEVRES
|
|
bool "Managed device resources"
|
|
depends on DM
|
|
help
|
|
This option enables the Managed device resources core support.
|
|
Device resources managed by the devres framework are automatically
|
|
released whether initialization fails half-way or the device gets
|
|
detached.
|
|
|
|
If this option is disabled, devres functions fall back to
|
|
non-managed variants. For example, devres_alloc() to kzalloc(),
|
|
devm_kmalloc() to kmalloc(), etc.
|
|
|
|
config DEBUG_DEVRES
|
|
bool "Managed device resources debugging functions"
|
|
depends on DEVRES
|
|
help
|
|
If this option is enabled, devres debug messages are printed.
|
|
Also, a function is available to dump a list of device resources.
|
|
Select this if you are having a problem with devres or want to
|
|
debug resource management for a managed device.
|
|
|
|
If you are unsure about this, Say N here.
|
|
|
|
config SIMPLE_BUS
|
|
bool "Support simple-bus driver"
|
|
depends on DM && OF_CONTROL
|
|
default y
|
|
help
|
|
Supports the 'simple-bus' driver, which is used on some systems.
|
|
|
|
config SPL_SIMPLE_BUS
|
|
bool "Support simple-bus driver in SPL"
|
|
depends on SPL_DM && SPL_OF_CONTROL
|
|
default y
|
|
help
|
|
Supports the 'simple-bus' driver, which is used on some systems
|
|
in SPL.
|
|
|
|
config SIMPLE_BUS_CORRECT_RANGE
|
|
bool "Decode the 'simple-bus' <range> by honoring the #address-cells and #size-cells"
|
|
depends on SIMPLE_BUS
|
|
default y if SANDBOX
|
|
help
|
|
Decoding the 'simple-bus' <range> by honoring the #address-cells
|
|
and #size-cells of parent/child bus. If unset, #address-cells of
|
|
parent bus is assumed to be 1, #address-cells and #size-cells of
|
|
child bus is also assumed to be 1, to save some spaces of using
|
|
an advanced API to decode the <range>, which benefits SPL image
|
|
builds that have size limits.
|
|
|
|
If you are unsure about this, Say N here.
|
|
|
|
config SIMPLE_PM_BUS
|
|
bool "Support simple-pm-bus driver"
|
|
depends on DM && OF_CONTROL && CLK && POWER_DOMAIN
|
|
help
|
|
Supports the 'simple-pm-bus' driver, which is used for busses that
|
|
have power domains and/or clocks which need to be enabled before use.
|
|
|
|
config OF_TRANSLATE
|
|
bool "Translate addresses using fdt_translate_address"
|
|
depends on DM && OF_CONTROL
|
|
default y
|
|
help
|
|
If this option is enabled, the reg property will be translated
|
|
using the fdt_translate_address() function. This is necessary
|
|
on some platforms (e.g. MVEBU) using complex "ranges"
|
|
properties in many nodes. As this translation is not handled
|
|
correctly in the default simple_bus_translate() function.
|
|
|
|
If this option is not enabled, simple_bus_translate() will be
|
|
used for the address translation. This function is faster and
|
|
smaller in size than fdt_translate_address().
|
|
|
|
config SPL_OF_TRANSLATE
|
|
bool "Translate addresses using fdt_translate_address in SPL"
|
|
depends on SPL_DM && SPL_OF_CONTROL
|
|
help
|
|
If this option is enabled, the reg property will be translated
|
|
using the fdt_translate_address() function. This is necessary
|
|
on some platforms (e.g. MVEBU) using complex "ranges"
|
|
properties in many nodes. As this translation is not handled
|
|
correctly in the default simple_bus_translate() function.
|
|
|
|
If this option is not enabled, simple_bus_translate() will be
|
|
used for the address translation. This function is faster and
|
|
smaller in size than fdt_translate_address().
|
|
|
|
config TPL_OF_TRANSLATE
|
|
bool "Translate addresses using fdt_translate_address in TPL"
|
|
depends on TPL_DM && TPL_OF_CONTROL
|
|
help
|
|
If this option is enabled, the reg property will be translated
|
|
using the fdt_translate_address() function. This is necessary
|
|
on some platforms (e.g. MVEBU) using complex "ranges"
|
|
properties in many nodes. As this translation is not handled
|
|
correctly in the default simple_bus_translate() function.
|
|
|
|
If this option is not enabled, simple_bus_translate() will be
|
|
used for the address translation. This function is faster and
|
|
smaller in size than fdt_translate_address()
|
|
|
|
config VPL_OF_TRANSLATE
|
|
bool "Translate addresses using fdt_translate_address in SPL"
|
|
depends on SPL_DM && VPL_OF_CONTROL
|
|
help
|
|
If this option is enabled, the reg property will be translated
|
|
using the fdt_translate_address() function. This is necessary
|
|
on some platforms (e.g. MVEBU) using complex "ranges"
|
|
properties in many nodes. As this translation is not handled
|
|
correctly in the default simple_bus_translate() function.
|
|
|
|
If this option is not enabled, simple_bus_translate() will be
|
|
used for the address translation. This function is faster and
|
|
smaller in size than fdt_translate_address().
|
|
|
|
config TRANSLATION_OFFSET
|
|
bool "Platforms specific translation offset"
|
|
depends on DM && OF_CONTROL
|
|
help
|
|
Some platforms need a special address translation. Those
|
|
platforms (e.g. mvebu in SPL) can configure a translation
|
|
offset by enabling this option and setting the translation_offset
|
|
variable in the GD in their platform- / board-specific code.
|
|
|
|
config OF_ISA_BUS
|
|
bool
|
|
depends on OF_TRANSLATE
|
|
help
|
|
Is this option is enabled then support for the ISA bus will
|
|
be included for addresses read from DT. This is something that
|
|
should be known to be required or not based upon the board
|
|
being targeted, and whether or not it makes use of an ISA bus.
|
|
|
|
The bus is matched based upon its node name equalling "isa". The
|
|
busses #address-cells should equal 2, with the first cell being
|
|
used to hold flags & flag 0x1 indicating that the address range
|
|
should be accessed using I/O port in/out accessors. The second
|
|
cell holds the offset into ISA bus address space. The #size-cells
|
|
property should equal 1, and of course holds the size of the
|
|
address range used by a device.
|
|
|
|
If this option is not enabled then support for the ISA bus is
|
|
not included and any such busses used in DT will be treated as
|
|
typical simple-bus compatible busses. This will lead to
|
|
mistranslation of device addresses, so ensure that this is
|
|
enabled if your board does include an ISA bus.
|
|
|
|
config DM_DEV_READ_INLINE
|
|
bool
|
|
default y if !OF_LIVE
|
|
|
|
config OFNODE_MULTI_TREE
|
|
bool "Allow the ofnode interface to access any tree"
|
|
default y if EVENT && !DM_DEV_READ_INLINE && !DM_INLINE_OFNODE
|
|
help
|
|
Normally U-Boot makes use of its control FDT, the one used to bind
|
|
devices and provide options. In some cases, U-Boot must also process
|
|
a separate FDT, e.g. one provided by the operating system, which
|
|
needs additions to the /chosen node.
|
|
|
|
This works fine with live tree (OF_LIVE), but with flat tree the
|
|
offset provided in ofnode is only useful with the control FDT. This
|
|
option adds a 'tree ID' to the offset, so that multiple trees can
|
|
be used. Call oftree_from_fdt() to register a new tree.
|
|
|
|
config OFNODE_MULTI_TREE_MAX
|
|
int "Maximum number of FDTs"
|
|
range 2 8
|
|
depends on OFNODE_MULTI_TREE
|
|
default 4
|
|
help
|
|
Sets the maximum number of device trees which can be used with the
|
|
ofnode interface when using flat trees (OF_LIVE). This is only
|
|
available in U-Boot proper and only after relocation.
|
|
|
|
config ACPIGEN
|
|
bool "Support ACPI table generation in driver model"
|
|
default y if SANDBOX || (GENERATE_ACPI_TABLE && !QEMU)
|
|
select LIB_UUID
|
|
help
|
|
This option enables generation of ACPI tables using driver-model
|
|
devices. It adds a new operation struct to each driver, to support
|
|
things like generating device-specific tables and returning the ACPI
|
|
name of a device.
|
|
|
|
config BOUNCE_BUFFER
|
|
bool "Include bounce buffer API"
|
|
help
|
|
Some peripherals support DMA from a subset of physically
|
|
addressable memory only. To support such peripherals, the
|
|
bounce buffer API uses a temporary buffer: it copies data
|
|
to/from DMA regions while managing cache operations.
|
|
|
|
A second possible use of bounce buffers is their ability to
|
|
provide aligned buffers for DMA operations.
|
|
|
|
endmenu
|