depends on HAVE_PRIVATE_LIBGCC
help
This option allows you to use the built-in libgcc implementation
- of U-boot instead of the one privided by the compiler.
+ of U-Boot instead of the one privided by the compiler.
If unsure, say N.
config SYS_HZ
get_timer() must operate in milliseconds and this option must be
set to 1000.
-config SYS_VSNPRINTF
- bool "Enable safe version of sprintf()"
+config USE_TINY_PRINTF
+ bool "Enable tiny printf() version"
help
- Since sprintf() can overflow its buffer, it is common to use
- snprintf() instead, which knows the buffer size and can avoid
- overflow. However, this does increase code size slightly (for
- Thumb-2, about 420 bytes). Enable this option for safety when
- using sprintf() with data you do not control.
+ This option enables a tiny, stripped down printf version.
+ This should only be used in space limited environments,
+ like SPL versions with hard memory limits. This version
+ reduces the code size by about 2.5KiB on armv7.
+
+ The supported format specifiers are %c, %s, %u/%d and %x.
config REGEX
bool "Enable regular expression support"
config TPM
bool "Trusted Platform Module (TPM) Support"
+ depends on DM
help
This enables support for TPMs which can be used to provide security
features for your board. The TPM can be connected via LPC or I2C
is performed in hardware.
endmenu
+menu "Compression Support"
+
+config LZ4
+ bool "Enable LZ4 decompression support"
+ help
+ If this option is set, support for LZ4 compressed images
+ is included. The LZ4 algorithm can run in-place as long as the
+ compressed image is loaded to the end of the output buffer, and
+ trades lower compression ratios for much faster decompression.
+
+ NOTE: This implements the release version of the LZ4 frame
+ format as generated by default by the 'lz4' command line tool.
+ This is not the same as the outdated, less efficient legacy
+ frame format currently (2015) implemented in the Linux kernel
+ (generated by 'lz4 -l'). The two formats are incompatible.
+
+endmenu
+
config ERRNO_STR
bool "Enable function for getting errno-related string message"
help
- if errno is null or positive number - a pointer to "Success" message
- if errno is negative - a pointer to errno related message
+config OF_LIBFDT
+ bool "Enable the FDT library"
+ default y if OF_CONTROL
+ help
+ This enables the FDT library (libfdt). It provides functions for
+ accessing binary device tree images in memory, such as adding and
+ removing notes and properties, scanning through the tree and finding
+ particular compatible nodes. The library operates on a flattened
+ version of the device tree.
+
source lib/efi/Kconfig
endmenu