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menu "VPL options"
depends on VPL
config VPL_BANNER_PRINT
bool "Enable output of the VPL banner 'U-Boot VPL ...'"
default y
help
If this option is enabled, VPL will print the banner with version
info. Disabling this option could be useful to reduce VPL boot time
(e.g. approx. 6 ms faster, when output on i.MX6 with 115200 baud).
config VPL_BOARD_INIT
bool "Call board-specific initialization in VPL"
help
If this option is enabled, U-Boot will call the function
spl_board_init() from board_init_r(). This function should be
provided by the board.
config VPL_CACHE
depends on CACHE
bool "Support cache drivers in VPL"
help
Enable support for cache drivers in VPL.
config VPL_CRC32
bool "Support CRC32 in VPL"
default y if VPL_ENV_SUPPORT || VPL_BLOBLIST
help
Enable this to support CRC32 in uImages or FIT images within VPL.
This is a 32-bit checksum value that can be used to verify images.
For FIT images, this is the least secure type of checksum, suitable
for detected accidental image corruption. For secure applications you
should consider SHA1 or SHA256.
config VPL_DM_SPI
bool "Support SPI DM drivers in VPL"
help
Enable support for SPI DM drivers in VPL.
config VPL_DM_SPI_FLASH
bool "Support SPI DM FLASH drivers in VPL"
help
Enable support for SPI DM flash drivers in VPL.
config VPL_FRAMEWORK
bool "Support VPL based upon the common SPL framework"
default y
help
Enable the SPL framework under common/spl/ for VPL builds.
This framework supports MMC, NAND and YMODEM and other methods
loading of U-Boot's next stage. If unsure, say Y.
config VPL_HANDOFF
bool "Pass hand-off information from VPL to SPL"
depends on HANDOFF && VPL_BLOBLIST
default y
help
This option enables VPL to write handoff information. This can be
used to pass information like the size of SDRAM from VPL to SPL. Also
VPL can receive information from TPL in the same place if that is
enabled.
config VPL_LIBCOMMON_SUPPORT
bool "Support common libraries"
default y if SPL_LIBCOMMON_SUPPORT
help
Enable support for common U-Boot libraries within VPL. See
SPL_LIBCOMMON_SUPPORT for details.
config VPL_LIBGENERIC_SUPPORT
bool "Support generic libraries"
default y if SPL_LIBGENERIC_SUPPORT
help
Enable support for generic U-Boot libraries within VPL. These
libraries include generic code to deal with device tree, hashing,
printf(), compression and the like. This option is enabled on many
boards. Enable this option to build the code in lib/ as part of a
VPL build.
config VPL_DRIVERS_MISC
bool "Support misc drivers"
default y if TPL_DRIVERS_MISC
help
Enable miscellaneous drivers in VPL. These drivers perform various
tasks that don't fall nicely into other categories, Enable this
option to build the drivers in drivers/misc as part of a VPL
build, for those that support building in VPL (not all drivers do).
config VPL_ENV_SUPPORT
bool "Support an environment"
help
Enable environment support in VPL. The U-Boot environment provides
a number of settings (essentially name/value pairs) which can
control many aspects of U-Boot's operation. Enabling this option will
make env_get() and env_set() available in VSPL.
config VPL_GPIO
bool "Support GPIO in VPL"
default y if SPL_GPIO
help
Enable support for GPIOs (General-purpose Input/Output) in VPL.
GPIOs allow U-Boot to read the state of an input line (high or
low) and set the state of an output line. This can be used to
drive LEDs, control power to various system parts and read user
input. GPIOs can be useful in VPL to enable a 'sign-of-life' LED,
for example. Enable this option to build the drivers in
drivers/gpio as part of a VPL build.
config VPL_HANDOFF
bool "Pass hand-off information from VPL to SPL and U-Boot proper"
depends on HANDOFF && VPL_BLOBLIST
default y
help
This option enables VPL to write handoff information. This can be
used to pass information like the size of SDRAM from VPL to U-Boot
proper. The information is also available to VPL if it is useful
there.
config VPL_HASH
bool "Support hashing drivers in VPL"
select SHA1
select SHA256
help
Enable hashing drivers in VPL. These drivers can be used to
accelerate secure boot processing in secure applications. Enable
this option to build system-specific drivers for hash acceleration
as part of a VPL build.
config VPL_I2C_SUPPORT
bool "Support I2C in VPL"
default y if SPL_I2C_SUPPORT
help
Enable support for the I2C bus in VPL. Vee SPL_I2C_SUPPORT for
details.
config VPL_PCH_SUPPORT
bool "Support PCH drivers"
default y if TPL_PCH_SUPPORT
help
Enable support for PCH (Platform Controller Hub) devices in VPL.
These are used to set up GPIOs and the SPI peripheral early in
boot. This enables the drivers in drivers/pch as part of a VPL
build.
config VPL_PCI
bool "Support PCI drivers"
default y if SPL_PCI
help
Enable support for PCI in VPL. For platforms that need PCI to boot,
or must perform some init using PCI in VPL, this provides the
necessary driver support. This enables the drivers in drivers/pci
as part of a VPL build.
config VPL_RTC
bool "Support RTC drivers"
help
Enable RTC (Real-time Clock) support in VPL. This includes support
for reading and setting the time. Some RTC devices also have some
non-volatile (battery-backed) memory which is accessible if
needed. This enables the drivers in drivers/rtc as part of a VPL
build.
config VPL_SERIAL
bool "Support serial"
default y if TPL_SERIAL
select VPL_PRINTF
select VPL_STRTO
help
Enable support for serial in VPL. See SPL_SERIAL for
details.
config VPL_SIZE_LIMIT
hex "Maximum size of VPL image"
default 0x0
help
Specifies the maximum length of the U-Boot VPL image.
If this value is zero, it is ignored.
config VPL_SPI
bool "Support SPI drivers"
help
Enable support for using SPI in VPL. See SPL_SPI_SUPPORT for
details.
config VPL_SPI_FLASH_SUPPORT
bool "Support SPI flash drivers"
help
Enable support for using SPI flash in VPL, and loading U-Boot from
SPI flash. SPI flash (Serial Peripheral Bus flash) is named after
the SPI bus that is used to connect it to a system. It is a simple
but fast bidirectional 4-wire bus (clock, chip select and two data
lines). This enables the drivers in drivers/mtd/spi as part of a
VPL build. This normally requires VPL_SPI_SUPPORT.
config VPL_TEXT_BASE
hex "VPL Text Base"
default 0x0
help
The address in memory that VPL will be running from.
config VPL_BINMAN_SYMBOLS
bool "Declare binman symbols in VPL"
depends on VPL_FRAMEWORK && BINMAN
default y
help
This enables use of symbols in VPL which refer to other entries in
the same binman image as the VPL. These can be declared with the
binman_sym_declare(type, entry, prop) macro and accessed by the
binman_sym(type, entry, prop) macro defined in binman_sym.h.
See tools/binman/binman.rst for a detailed explanation.
config VPL_BINMAN_UBOOT_SYMBOLS
bool "Declare binman symbols for U-Boot phases in VPL"
depends on VPL_BINMAN_SYMBOLS
default n if ARCH_IMX8M
default y
help
This enables use of symbols in VPL which refer to U-Boot phases,
enabling VPL to obtain the location and size of its next phase simply
by calling spl_get_image_pos() and spl_get_image_size().
For this to work, you must have all U-Boot phases in the same binman
image, so binman can update VPL with the locations of everything.
endmenu
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