xref: /openbmc/u-boot/lib/Kconfig (revision 9c7dea60) 
1menu "Library routines"
2
3config 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
11config HAVE_PRIVATE_LIBGCC
12	bool
13
14config 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
22config 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
30config 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
39config REGEX
40	bool "Enable regular expression support"
41	help
42	  If this variable is defined, U-Boot is linked against the
43	  SLRE (Super Light Regular Expression) library, which adds
44	  regex support to some commands, for example "env grep" and
45	  "setexpr".
46
47config LIB_RAND
48	bool
49
50source lib/rsa/Kconfig
51
52menu "Hashing Support"
53
54config SHA1
55	bool "Enable SHA1 support"
56	help
57	  This option enables support of hashing using SHA1 algorithm.
58	  The hash is calculated in software.
59	  The SHA1 algorithm produces a 160-bit (20-byte) hash value
60	  (digest).
61
62config SHA256
63	bool "Enable SHA256 support"
64	help
65	  This option enables support of hashing using SHA256 algorithm.
66	  The hash is calculated in software.
67	  The SHA256 algorithm produces a 256-bit (32-byte) hash value
68	  (digest).
69
70config SHA_HW_ACCEL
71	bool "Enable hashing using hardware"
72	help
73	  This option enables hardware acceleration
74	  for SHA1/SHA256 hashing.
75	  This affects the 'hash' command and also the
76	  hash_lookup_algo() function.
77
78config SHA_PROG_HW_ACCEL
79	bool "Enable Progressive hashing support using hardware"
80	depends on SHA_HW_ACCEL
81	help
82	  This option enables hardware-acceleration for
83	  SHA1/SHA256 progressive hashing.
84	  Data can be streamed in a block at a time and the hashing
85	  is performed in hardware.
86endmenu
87
88config ERRNO_STR
89	bool "Enable function for getting errno-related string message"
90	help
91	  The function errno_str(int errno), returns a pointer to the errno
92	  corresponding text message:
93	  - if errno is null or positive number - a pointer to "Success" message
94	  - if errno is negative - a pointer to errno related message
95
96endmenu
97