supports MMC, NAND and YMODEM and other methods loading of U-Boot
and the Linux Kernel. If unsure, say Y.
+config HANDOFF
+ bool "Pass hand-off information from SPL to U-Boot proper"
+ depends on BLOBLIST
+ help
+ It is useful to be able to pass information from SPL to U-Boot
+ proper to preserve state that is known in SPL and is needed in U-Boot.
+ Enable this to locate the handoff information in U-Boot proper, early
+ in boot. It is available in gd->handoff. The state state is set up
+ in SPL (or TPL if that is being used).
+
if SPL
+config SPL_HANDOFF
+ bool "Pass hand-off information from SPL to U-Boot proper"
+ depends on HANDOFF
+ default y
+ help
+ This option enables SPL to write handoff information. This can be
+ used to pass information like the size of SDRAM from SPL to U-Boot
+ proper. Also SPL can receive information from TPL in the same place
+ if that is enabled.
+
config SPL_LDSCRIPT
string "Linker script for the SPL stage"
default "arch/$(ARCH)/cpu/u-boot-spl.lds"
location is used. Normally we put the device tree at the end of BSS
but with this option enabled, it goes at _image_binary_end.
-config SPL_DISABLE_BANNER_PRINT
- bool "Disable output of the SPL banner 'U-Boot SPL ...'"
+config SPL_BANNER_PRINT
+ bool "Enable output of the SPL banner 'U-Boot SPL ...'"
+ default y
+ help
+ If this option is enabled, SPL will print the banner with version
+ info. Disabling this option could be useful to reduce TPL boot time
+ (e.g. approx. 6 ms faster, when output on i.MX6 with 115200 baud).
+
+config TPL_BANNER_PRINT
+ bool "Enable output of the TPL banner 'U-Boot TPL ...'"
+ default y
help
If this option is enabled, SPL will not print the banner with version
- info. Selecting this option could be useful to reduce SPL boot time
- (e.g. approx. 6 ms slower, when output on i.MX6 with 115200 baud).
+ info. Disabling this option could be useful to reduce SPL boot time
+ (e.g. approx. 6 ms faster, when output on i.MX6 with 115200 baud).
config SPL_DISPLAY_PRINT
bool "Display a board-specific message in SPL"
this option to build system-specific drivers for hash acceleration
as part of an SPL build.
+config TPL_HASH_SUPPORT
+ bool "Support hashing drivers in TPL"
+ select SHA1
+ select SHA256
+ help
+ Enable hashing drivers in SPL. 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 an SPL build.
+
config SPL_DMA_SUPPORT
bool "Support DMA drivers"
help
within SPL.
config SPL_GPIO_SUPPORT
- bool "Support GPIO"
+ bool "Support GPIO in SPL"
help
Enable support for GPIOs (General-purpose Input/Output) in SPL.
GPIOs allow U-Boot to read the state of an input line (high or
if TPL
+config TPL_HANDOFF
+ bool "Pass hand-off information from TPL to SPL and U-Boot proper"
+ depends on HANDOFF
+ default y
+ help
+ This option enables TPL to write handoff information. This can be
+ used to pass information like the size of SDRAM from TPL to U-Boot
+ proper. The information is also available to SPL if it is useful
+ there.
+
config TPL_BOARD_INIT
bool "Call board-specific initialization in TPL"
help
help
Enable environment support in TPL. See SPL_ENV_SUPPORT for details.
+config TPL_GPIO_SUPPORT
+ bool "Support GPIO in TPL"
+ help
+ Enable support for GPIOs (General-purpose Input/Output) in TPL.
+ 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 TPL to enable a 'sign-of-life' LED,
+ for example. Enable this option to build the drivers in
+ drivers/gpio as part of an TPL build.
+
config TPL_I2C_SUPPORT
bool "Support I2C"
help
help
Enable support for NAND in TPL. See SPL_NAND_SUPPORT for details.
+config TPL_PCI_SUPPORT
+ bool "Support PCI drivers"
+ help
+ Enable support for PCI in TPL. For platforms that need PCI to boot,
+ or must perform some init using PCI in SPL, this provides the
+ necessary driver support. This enables the drivers in drivers/pci
+ as part of a TPL build.
+
+config TPL_PCH_SUPPORT
+ bool "Support PCH drivers"
+ help
+ Enable support for PCH (Platform Controller Hub) devices in TPL.
+ 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 TPL
+ build.
+
config TPL_RAM_SUPPORT
bool "Support booting from RAM"
help
be already in memory when TPL takes over, e.g. loaded by the boot
ROM.
+config TPL_RTC_SUPPORT
+ bool "Support RTC drivers"
+ help
+ Enable RTC (Real-time Clock) support in TPL. 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 an TPL
+ build.
+
config TPL_SERIAL_SUPPORT
bool "Support serial"
select TPL_PRINTF
projects / platform / kernel / u-boot.git / blobdiff