mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
202 lines
6.5 KiB
Text
202 lines
6.5 KiB
Text
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menu "VPL options"
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depends on VPL
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config VPL_BANNER_PRINT
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bool "Enable output of the VPL banner 'U-Boot VPL ...'"
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default y
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help
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If this option is enabled, VPL will print the banner with version
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info. Disabling this option could be useful to reduce VPL boot time
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(e.g. approx. 6 ms faster, when output on i.MX6 with 115200 baud).
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config VPL_BOARD_INIT
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bool "Call board-specific initialization in VPL"
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help
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If this option is enabled, U-Boot will call the function
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spl_board_init() from board_init_r(). This function should be
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provided by the board.
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config VPL_CACHE
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depends on CACHE
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bool "Support cache drivers in VPL"
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help
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Enable support for cache drivers in VPL.
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config VPL_CRC32
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bool "Support CRC32 in VPL"
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default y if VPL_ENV_SUPPORT || VPL_BLOBLIST
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help
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Enable this to support CRC32 in uImages or FIT images within VPL.
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This is a 32-bit checksum value that can be used to verify images.
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For FIT images, this is the least secure type of checksum, suitable
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for detected accidental image corruption. For secure applications you
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should consider SHA1 or SHA256.
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config VPL_DM_SPI
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bool "Support SPI DM drivers in VPL"
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help
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Enable support for SPI DM drivers in VPL.
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config VPL_DM_SPI_FLASH
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bool "Support SPI DM FLASH drivers in VPL"
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help
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Enable support for SPI DM flash drivers in VPL.
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config VPL_FRAMEWORK
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bool "Support VPL based upon the common SPL framework"
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default y
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help
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Enable the SPL framework under common/spl/ for VPL builds.
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This framework supports MMC, NAND and YMODEM and other methods
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loading of U-Boot's next stage. If unsure, say Y.
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config VPL_HANDOFF
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bool "Pass hand-off information from VPL to SPL"
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depends on HANDOFF && VPL_BLOBLIST
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default y
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help
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This option enables VPL to write handoff information. This can be
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used to pass information like the size of SDRAM from VPL to SPL. Also
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VPL can receive information from TPL in the same place if that is
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enabled.
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config VPL_LIBCOMMON_SUPPORT
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bool "Support common libraries"
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default y if SPL_LIBCOMMON_SUPPORT
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help
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Enable support for common U-Boot libraries within VPL. See
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SPL_LIBCOMMON_SUPPORT for details.
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config VPL_LIBGENERIC_SUPPORT
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bool "Support generic libraries"
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default y if SPL_LIBGENERIC_SUPPORT
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help
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Enable support for generic U-Boot libraries within VPL. These
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libraries include generic code to deal with device tree, hashing,
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printf(), compression and the like. This option is enabled on many
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boards. Enable this option to build the code in lib/ as part of a
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VPL build.
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config VPL_DRIVERS_MISC
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bool "Support misc drivers"
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default y if TPL_DRIVERS_MISC
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help
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Enable miscellaneous drivers in VPL. These drivers perform various
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tasks that don't fall nicely into other categories, Enable this
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option to build the drivers in drivers/misc as part of a VPL
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build, for those that support building in VPL (not all drivers do).
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config VPL_ENV_SUPPORT
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bool "Support an environment"
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help
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Enable environment support in VPL. The U-Boot environment provides
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a number of settings (essentially name/value pairs) which can
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control many aspects of U-Boot's operation. Enabling this option will
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make env_get() and env_set() available in VSPL.
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config VPL_GPIO
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bool "Support GPIO in VPL"
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default y if SPL_GPIO
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help
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Enable support for GPIOs (General-purpose Input/Output) in VPL.
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GPIOs allow U-Boot to read the state of an input line (high or
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low) and set the state of an output line. This can be used to
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drive LEDs, control power to various system parts and read user
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input. GPIOs can be useful in VPL to enable a 'sign-of-life' LED,
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for example. Enable this option to build the drivers in
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drivers/gpio as part of a VPL build.
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config VPL_HANDOFF
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bool "Pass hand-off information from VPL to SPL and U-Boot proper"
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depends on HANDOFF && VPL_BLOBLIST
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default y
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help
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This option enables VPL to write handoff information. This can be
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used to pass information like the size of SDRAM from VPL to U-Boot
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proper. The information is also available to VPL if it is useful
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there.
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config VPL_HASH
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bool "Support hashing drivers in VPL"
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select SHA1
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select SHA256
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help
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Enable hashing drivers in VPL. These drivers can be used to
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accelerate secure boot processing in secure applications. Enable
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this option to build system-specific drivers for hash acceleration
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as part of a VPL build.
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config VPL_I2C_SUPPORT
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bool "Support I2C in VPL"
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default y if SPL_I2C_SUPPORT
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help
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Enable support for the I2C bus in VPL. Vee SPL_I2C_SUPPORT for
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details.
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config VPL_PCH_SUPPORT
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bool "Support PCH drivers"
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default y if TPL_PCH_SUPPORT
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help
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Enable support for PCH (Platform Controller Hub) devices in VPL.
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These are used to set up GPIOs and the SPI peripheral early in
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boot. This enables the drivers in drivers/pch as part of a VPL
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build.
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config VPL_PCI
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bool "Support PCI drivers"
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default y if SPL_PCI
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help
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Enable support for PCI in VPL. For platforms that need PCI to boot,
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or must perform some init using PCI in VPL, this provides the
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necessary driver support. This enables the drivers in drivers/pci
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as part of a VPL build.
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config VPL_RTC
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bool "Support RTC drivers"
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help
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Enable RTC (Real-time Clock) support in VPL. This includes support
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for reading and setting the time. Some RTC devices also have some
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non-volatile (battery-backed) memory which is accessible if
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needed. This enables the drivers in drivers/rtc as part of a VPL
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build.
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config VPL_SERIAL
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bool "Support serial"
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default y if TPL_SERIAL
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select VPL_PRINTF
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select VPL_STRTO
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help
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Enable support for serial in VPL. See SPL_SERIAL_SUPPORT for
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details.
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config VPL_SIZE_LIMIT
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hex "Maximum size of VPL image"
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default 0x0
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help
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Specifies the maximum length of the U-Boot VPL image.
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If this value is zero, it is ignored.
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config VPL_SPI
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bool "Support SPI drivers"
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help
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Enable support for using SPI in VPL. See SPL_SPI_SUPPORT for
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details.
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config VPL_SPI_FLASH_SUPPORT
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bool "Support SPI flash drivers"
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help
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Enable support for using SPI flash in VPL, and loading U-Boot from
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SPI flash. SPI flash (Serial Peripheral Bus flash) is named after
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the SPI bus that is used to connect it to a system. It is a simple
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but fast bidirectional 4-wire bus (clock, chip select and two data
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lines). This enables the drivers in drivers/mtd/spi as part of a
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VPL build. This normally requires VPL_SPI_SUPPORT.
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config VPL_TEXT_BASE
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hex "VPL Text Base"
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default 0x0
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help
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The address in memory that VPL will be running from.
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endmenu
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