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https://github.com/AsahiLinux/u-boot
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7ca2850cbc
ACPI (Advanced Configuration and Power Interface) is a standard for specifying information about a platform. It is a little like device tree but the bindings are part of the specification and it supports an interpreted bytecode language. Driver model does not use ACPI for U-Boot's configuration, but it is convenient to have it support generation of ACPI tables for passing to Linux, etc. As a starting point, add an optional set of ACPI operations to each device. Initially only a single operation is available, to obtain the ACPI name for the device. More operations are added later. Enable ACPI for sandbox to ensure build coverage and so that we can add tests. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
273 lines
9.6 KiB
Text
273 lines
9.6 KiB
Text
menu "Generic Driver Options"
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config DM
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bool "Enable Driver Model"
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help
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This config option enables Driver Model. This brings in the core
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support, including scanning of platform data on start-up. If
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CONFIG_OF_CONTROL is enabled, the device tree will be scanned also
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when available.
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config SPL_DM
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bool "Enable Driver Model for SPL"
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depends on DM && SPL
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help
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Enable driver model in SPL. You will need to provide a
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suitable malloc() implementation. If you are not using the
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full malloc() enabled by CONFIG_SYS_SPL_MALLOC_START,
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consider using CONFIG_SYS_MALLOC_SIMPLE. In that case you
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must provide CONFIG_SPL_SYS_MALLOC_F_LEN to set the size.
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In most cases driver model will only allocate a few uclasses
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and devices in SPL, so 1KB should be enable. See
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CONFIG_SPL_SYS_MALLOC_F_LEN for more details on how to enable it.
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config TPL_DM
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bool "Enable Driver Model for TPL"
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depends on DM && TPL
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help
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Enable driver model in TPL. You will need to provide a
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suitable malloc() implementation. If you are not using the
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full malloc() enabled by CONFIG_SYS_SPL_MALLOC_START,
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consider using CONFIG_SYS_MALLOC_SIMPLE. In that case you
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must provide CONFIG_SPL_SYS_MALLOC_F_LEN to set the size.
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In most cases driver model will only allocate a few uclasses
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and devices in SPL, so 1KB should be enough. See
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CONFIG_SPL_SYS_MALLOC_F_LEN for more details on how to enable it.
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Disable this for very small implementations.
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config DM_WARN
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bool "Enable warnings in driver model"
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depends on DM
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default y
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help
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The dm_warn() function can use up quite a bit of space for its
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strings. By default this is disabled for SPL builds to save space.
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This will cause dm_warn() to be compiled out - it will do nothing
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when called.
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config DM_DEBUG
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bool "Enable debug messages in driver model core"
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depends on DM
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help
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Say Y here if you want to compile in debug messages in DM core.
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config DM_DEVICE_REMOVE
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bool "Support device removal"
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depends on DM
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default y
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help
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We can save some code space by dropping support for removing a
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device.
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Note that this may have undesirable results in the USB subsystem as
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it causes unplugged devices to linger around in the dm-tree, and it
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causes USB host controllers to not be stopped when booting the OS.
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config SPL_DM_DEVICE_REMOVE
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bool "Support device removal in SPL"
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depends on SPL_DM
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default n
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help
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We can save some code space by dropping support for removing a
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device. This is not normally required in SPL, so by default this
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option is disabled for SPL.
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config DM_STDIO
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bool "Support stdio registration"
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depends on DM
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default y
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help
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Normally serial drivers register with stdio so that they can be used
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as normal output devices. In SPL we don't normally use stdio, so
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we can omit this feature.
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config DM_SEQ_ALIAS
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bool "Support numbered aliases in device tree"
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depends on DM
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default y
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help
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Most boards will have a '/aliases' node containing the path to
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numbered devices (e.g. serial0 = &serial0). This feature can be
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disabled if it is not required.
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config SPL_DM_SEQ_ALIAS
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bool "Support numbered aliases in device tree in SPL"
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depends on SPL_DM
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default n
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help
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Most boards will have a '/aliases' node containing the path to
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numbered devices (e.g. serial0 = &serial0). This feature can be
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disabled if it is not required, to save code space in SPL.
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config REGMAP
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bool "Support register maps"
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depends on DM
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help
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Hardware peripherals tend to have one or more sets of registers
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which can be accessed to control the hardware. A register map
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models this with a simple read/write interface. It can in principle
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support any bus type (I2C, SPI) but so far this only supports
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direct memory access.
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config SPL_REGMAP
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bool "Support register maps in SPL"
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depends on SPL_DM
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help
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Hardware peripherals tend to have one or more sets of registers
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which can be accessed to control the hardware. A register map
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models this with a simple read/write interface. It can in principle
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support any bus type (I2C, SPI) but so far this only supports
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direct memory access.
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config TPL_REGMAP
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bool "Support register maps in TPL"
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depends on TPL_DM
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help
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Hardware peripherals tend to have one or more sets of registers
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which can be accessed to control the hardware. A register map
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models this with a simple read/write interface. It can in principle
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support any bus type (I2C, SPI) but so far this only supports
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direct memory access.
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config SYSCON
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bool "Support system controllers"
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depends on REGMAP
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help
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Many SoCs have a number of system controllers which are dealt with
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as a group by a single driver. Some common functionality is provided
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by this uclass, including accessing registers via regmap and
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assigning a unique number to each.
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config SPL_SYSCON
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bool "Support system controllers in SPL"
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depends on SPL_REGMAP
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help
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Many SoCs have a number of system controllers which are dealt with
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as a group by a single driver. Some common functionality is provided
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by this uclass, including accessing registers via regmap and
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assigning a unique number to each.
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config TPL_SYSCON
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bool "Support system controllers in TPL"
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depends on TPL_REGMAP
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help
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Many SoCs have a number of system controllers which are dealt with
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as a group by a single driver. Some common functionality is provided
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by this uclass, including accessing registers via regmap and
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assigning a unique number to each.
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config DEVRES
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bool "Managed device resources"
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depends on DM
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help
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This option enables the Managed device resources core support.
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Device resources managed by the devres framework are automatically
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released whether initialization fails half-way or the device gets
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detached.
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If this option is disabled, devres functions fall back to
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non-managed variants. For example, devres_alloc() to kzalloc(),
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devm_kmalloc() to kmalloc(), etc.
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config DEBUG_DEVRES
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bool "Managed device resources debugging functions"
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depends on DEVRES
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help
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If this option is enabled, devres debug messages are printed.
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Also, a function is available to dump a list of device resources.
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Select this if you are having a problem with devres or want to
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debug resource management for a managed device.
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If you are unsure about this, Say N here.
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config SIMPLE_BUS
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bool "Support simple-bus driver"
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depends on DM && OF_CONTROL
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default y
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help
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Supports the 'simple-bus' driver, which is used on some systems.
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config SPL_SIMPLE_BUS
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bool "Support simple-bus driver in SPL"
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depends on SPL_DM && SPL_OF_CONTROL
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default y
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help
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Supports the 'simple-bus' driver, which is used on some systems
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in SPL.
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config OF_TRANSLATE
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bool "Translate addresses using fdt_translate_address"
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depends on DM && OF_CONTROL
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default y
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help
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If this option is enabled, the reg property will be translated
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using the fdt_translate_address() function. This is necessary
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on some platforms (e.g. MVEBU) using complex "ranges"
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properties in many nodes. As this translation is not handled
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correctly in the default simple_bus_translate() function.
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If this option is not enabled, simple_bus_translate() will be
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used for the address translation. This function is faster and
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smaller in size than fdt_translate_address().
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config SPL_OF_TRANSLATE
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bool "Translate addresses using fdt_translate_address in SPL"
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depends on SPL_DM && SPL_OF_CONTROL
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default n
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help
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If this option is enabled, the reg property will be translated
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using the fdt_translate_address() function. This is necessary
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on some platforms (e.g. MVEBU) using complex "ranges"
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properties in many nodes. As this translation is not handled
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correctly in the default simple_bus_translate() function.
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If this option is not enabled, simple_bus_translate() will be
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used for the address translation. This function is faster and
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smaller in size than fdt_translate_address().
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config TRANSLATION_OFFSET
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bool "Platforms specific translation offset"
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depends on DM && OF_CONTROL
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help
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Some platforms need a special address translation. Those
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platforms (e.g. mvebu in SPL) can configure a translation
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offset by enabling this option and setting the translation_offset
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variable in the GD in their platform- / board-specific code.
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config OF_ISA_BUS
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bool
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depends on OF_TRANSLATE
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help
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Is this option is enabled then support for the ISA bus will
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be included for addresses read from DT. This is something that
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should be known to be required or not based upon the board
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being targeted, and whether or not it makes use of an ISA bus.
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The bus is matched based upon its node name equalling "isa". The
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busses #address-cells should equal 2, with the first cell being
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used to hold flags & flag 0x1 indicating that the address range
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should be accessed using I/O port in/out accessors. The second
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cell holds the offset into ISA bus address space. The #size-cells
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property should equal 1, and of course holds the size of the
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address range used by a device.
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If this option is not enabled then support for the ISA bus is
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not included and any such busses used in DT will be treated as
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typical simple-bus compatible busses. This will lead to
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mistranslation of device addresses, so ensure that this is
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enabled if your board does include an ISA bus.
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config DM_DEV_READ_INLINE
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bool
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default y if !OF_LIVE
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config ACPIGEN
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bool "Support ACPI table generation in driver model"
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default y if SANDBOX || GENERATE_ACPI_TABLE
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help
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This option enables generation of ACPI tables using driver-model
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devices. It adds a new operation struct to each driver, to support
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things like generating device-specific tables and returning the ACPI
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name of a device.
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endmenu
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