[people/ms/u-boot.git] / lib / Kconfig

menu "Library routines"

config CC_OPTIMIZE_LIBS_FOR_SPEED
	bool "Optimize libraries for speed"
	help
	  Enabling this option will pass "-O2" to gcc when compiling
	  under "lib" directory.

	  If unsure, say N.

config HAVE_PRIVATE_LIBGCC
	bool

config USE_PRIVATE_LIBGCC
	bool "Use private libgcc"
	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.
	  If unsure, say N.

config SYS_HZ
	int
	default 1000
	help
	  The frequency of the timer returned by get_timer().
	  get_timer() must operate in milliseconds and this option must be
	  set to 1000.

config SYS_VSNPRINTF
	bool "Enable safe version of sprintf()"
	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.

config REGEX
	bool "Enable regular expression support"
	default y if NET
	help
	  If this variable is defined, U-Boot is linked against the
	  SLRE (Super Light Regular Expression) library, which adds
	  regex support to some commands, for example "env grep" and
	  "setexpr".

config LIB_RAND
	bool "Pseudo-random library support "
	help
	  This library provides pseudo-random number generator functions.

source lib/dhry/Kconfig

source lib/rsa/Kconfig

config TPM
	bool "Trusted Platform Module (TPM) Support"
	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
	  and a sandbox TPM is provided for testing purposes. Use the 'tpm'
	  command to interactive the TPM. Driver model support is provided
	  for the low-level TPM interface, but only one TPM is supported at
	  a time by the TPM library.

menu "Hashing Support"

config SHA1
	bool "Enable SHA1 support"
	help
	  This option enables support of hashing using SHA1 algorithm.
	  The hash is calculated in software.
	  The SHA1 algorithm produces a 160-bit (20-byte) hash value
	  (digest).

config SHA256
	bool "Enable SHA256 support"
	help
	  This option enables support of hashing using SHA256 algorithm.
	  The hash is calculated in software.
	  The SHA256 algorithm produces a 256-bit (32-byte) hash value
	  (digest).

config SHA_HW_ACCEL
	bool "Enable hashing using hardware"
	help
	  This option enables hardware acceleration
	  for SHA1/SHA256 hashing.
	  This affects the 'hash' command and also the
	  hash_lookup_algo() function.

config SHA_PROG_HW_ACCEL
	bool "Enable Progressive hashing support using hardware"
	depends on SHA_HW_ACCEL
	help
	  This option enables hardware-acceleration for
	  SHA1/SHA256 progressive hashing.
	  Data can be streamed in a block at a time and the hashing
	  is performed in hardware.
endmenu

config ERRNO_STR
	bool "Enable function for getting errno-related string message"
	help
	  The function errno_str(int errno), returns a pointer to the errno
	  corresponding text message:
	  - if errno is null or positive number - a pointer to "Success" message
	  - if errno is negative - a pointer to errno related message

source lib/efi/Kconfig

endmenu
Commit	Line	Data
ed36323f MY	1	menu "Library routines"
ed36323f MY	2
b0928da6 MY	3	config CC_OPTIMIZE_LIBS_FOR_SPEED
	4	bool "Optimize libraries for speed"
	5	help
	6	Enabling this option will pass "-O2" to gcc when compiling
	7	under "lib" directory.
	8
	9	If unsure, say N.
	10
45ccec8f MY	11	config HAVE_PRIVATE_LIBGCC
	12	bool
	13
	14	config USE_PRIVATE_LIBGCC
	15	bool "Use private libgcc"
	16	depends on HAVE_PRIVATE_LIBGCC
	17	help
	18	This option allows you to use the built-in libgcc implementation
	19	of U-boot instead of the one privided by the compiler.
	20	If unsure, say N.
	21
8c688bc4 MY	22	config SYS_HZ
	23	int
	24	default 1000
	25	help
	26	The frequency of the timer returned by get_timer().
	27	get_timer() must operate in milliseconds and this option must be
	28	set to 1000.
	29
8156345d SG	30	config SYS_VSNPRINTF
	31	bool "Enable safe version of sprintf()"
	32	help
	33	Since sprintf() can overflow its buffer, it is common to use
	34	snprintf() instead, which knows the buffer size and can avoid
	35	overflow. However, this does increase code size slightly (for
	36	Thumb-2, about 420 bytes). Enable this option for safety when
	37	using sprintf() with data you do not control.
	38
1a60650c JH	39	config REGEX
1a60650c JH	40	bool "Enable regular expression support"
f7848d90	41	default y if NET
1a60650c JH	42	help
	43	If this variable is defined, U-Boot is linked against the
	44	SLRE (Super Light Regular Expression) library, which adds
	45	regex support to some commands, for example "env grep" and
	46	"setexpr".
	47
9ba9e85f	48	config LIB_RAND
3850dbe8 MY	49	bool "Pseudo-random library support "
	50	help
	51	This library provides pseudo-random number generator functions.
9ba9e85f	52
d1389403 SG	53	source lib/dhry/Kconfig
d1389403 SG	54
d9f23c7f	55	source lib/rsa/Kconfig
c4beb22f	56
a7d660bc SG	57	config TPM
	58	bool "Trusted Platform Module (TPM) Support"
	59	help
	60	This enables support for TPMs which can be used to provide security
	61	features for your board. The TPM can be connected via LPC or I2C
	62	and a sandbox TPM is provided for testing purposes. Use the 'tpm'
	63	command to interactive the TPM. Driver model support is provided
	64	for the low-level TPM interface, but only one TPM is supported at
	65	a time by the TPM library.
	66
94e3c8c4	67	menu "Hashing Support"
	68
	69	config SHA1
	70	bool "Enable SHA1 support"
	71	help
	72	This option enables support of hashing using SHA1 algorithm.
	73	The hash is calculated in software.
	74	The SHA1 algorithm produces a 160-bit (20-byte) hash value
	75	(digest).
	76
	77	config SHA256
	78	bool "Enable SHA256 support"
	79	help
	80	This option enables support of hashing using SHA256 algorithm.
	81	The hash is calculated in software.
	82	The SHA256 algorithm produces a 256-bit (32-byte) hash value
	83	(digest).
	84
	85	config SHA_HW_ACCEL
	86	bool "Enable hashing using hardware"
	87	help
	88	This option enables hardware acceleration
	89	for SHA1/SHA256 hashing.
	90	This affects the 'hash' command and also the
	91	hash_lookup_algo() function.
	92
	93	config SHA_PROG_HW_ACCEL
	94	bool "Enable Progressive hashing support using hardware"
	95	depends on SHA_HW_ACCEL
	96	help
	97	This option enables hardware-acceleration for
	98	SHA1/SHA256 progressive hashing.
	99	Data can be streamed in a block at a time and the hashing
	100	is performed in hardware.
	101	endmenu
	102
6501ff62 PM	103	config ERRNO_STR
	104	bool "Enable function for getting errno-related string message"
	105	help
	106	The function errno_str(int errno), returns a pointer to the errno
	107	corresponding text message:
	108	- if errno is null or positive number - a pointer to "Success" message
	109	- if errno is negative - a pointer to errno related message
	110
867a6ac8 SG	111	source lib/efi/Kconfig
867a6ac8 SG	112
ed36323f	113	endmenu