menu "Generic Driver Options"
config DM
- bool "Enable Driver Model"
+ 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
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_SYS_MALLOC_SIMPLE. In that case you
+ full malloc() enabled by CFG_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 enable. See
+ 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
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_SYS_MALLOC_SIMPLE. In that case you
+ full malloc() enabled by CFG_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 CFG_SYS_SPL_MALLOC_START,
+ consider using CONFIG_SPL_SYS_MALLOC_SIMPLE.
+
config DM_WARN
bool "Enable warnings in driver model"
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
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
+ depends on DM
+ select EVENT
+ 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. Such
+ subsystems must select this option.
+
config SPL_DM_DEVICE_REMOVE
bool "Support device removal in SPL"
depends on SPL_DM
- default n
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
config SPL_DM_SEQ_ALIAS
bool "Support numbered aliases in device tree in SPL"
depends on SPL_DM
- default n
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
config DM_DMA
bool "Support per-device DMA constraints"
depends on DM
- default n
help
Enable this to extract per-device DMA constraints, only supported on
device-tree systems for now. This is needed in order translate
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
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
config SPL_OF_TRANSLATE
bool "Translate addresses using fdt_translate_address in SPL"
depends on SPL_DM && SPL_OF_CONTROL
- default n
+ 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
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)
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