10a9064fbSMasahiro Yamada #ifndef __LINUX_KCONFIG_H 20a9064fbSMasahiro Yamada #define __LINUX_KCONFIG_H 30a9064fbSMasahiro Yamada 40a9064fbSMasahiro Yamada #include <generated/autoconf.h> 50a9064fbSMasahiro Yamada 60a9064fbSMasahiro Yamada /* 70a9064fbSMasahiro Yamada * Helper macros to use CONFIG_ options in C/CPP expressions. Note that 80a9064fbSMasahiro Yamada * these only work with boolean and tristate options. 90a9064fbSMasahiro Yamada */ 100a9064fbSMasahiro Yamada 110a9064fbSMasahiro Yamada /* 120a9064fbSMasahiro Yamada * Getting something that works in C and CPP for an arg that may or may 130a9064fbSMasahiro Yamada * not be defined is tricky. Here, if we have "#define CONFIG_BOOGER 1" 140a9064fbSMasahiro Yamada * we match on the placeholder define, insert the "0," for arg1 and generate 150a9064fbSMasahiro Yamada * the triplet (0, 1, 0). Then the last step cherry picks the 2nd arg (a one). 160a9064fbSMasahiro Yamada * When CONFIG_BOOGER is not defined, we generate a (... 1, 0) pair, and when 170a9064fbSMasahiro Yamada * the last step cherry picks the 2nd arg, we get a zero. 180a9064fbSMasahiro Yamada */ 190a9064fbSMasahiro Yamada #define __ARG_PLACEHOLDER_1 0, 200a9064fbSMasahiro Yamada #define config_enabled(cfg) _config_enabled(cfg) 210a9064fbSMasahiro Yamada #define _config_enabled(value) __config_enabled(__ARG_PLACEHOLDER_##value) 220a9064fbSMasahiro Yamada #define __config_enabled(arg1_or_junk) ___config_enabled(arg1_or_junk 1, 0) 230a9064fbSMasahiro Yamada #define ___config_enabled(__ignored, val, ...) val 240a9064fbSMasahiro Yamada 250a9064fbSMasahiro Yamada /* 260a9064fbSMasahiro Yamada * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm', 270a9064fbSMasahiro Yamada * 0 otherwise. 280a9064fbSMasahiro Yamada * 290a9064fbSMasahiro Yamada */ 300a9064fbSMasahiro Yamada #define IS_ENABLED(option) \ 310a9064fbSMasahiro Yamada (config_enabled(option) || config_enabled(option##_MODULE)) 320a9064fbSMasahiro Yamada 330a9064fbSMasahiro Yamada /* 340a9064fbSMasahiro Yamada * IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0 350a9064fbSMasahiro Yamada * otherwise. For boolean options, this is equivalent to 360a9064fbSMasahiro Yamada * IS_ENABLED(CONFIG_FOO). 370a9064fbSMasahiro Yamada */ 380a9064fbSMasahiro Yamada #define IS_BUILTIN(option) config_enabled(option) 390a9064fbSMasahiro Yamada 400a9064fbSMasahiro Yamada /* 410a9064fbSMasahiro Yamada * IS_MODULE(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'm', 0 420a9064fbSMasahiro Yamada * otherwise. 430a9064fbSMasahiro Yamada */ 440a9064fbSMasahiro Yamada #define IS_MODULE(option) config_enabled(option##_MODULE) 450a9064fbSMasahiro Yamada 46*8be60f06SMasahiro Yamada /* 47*8be60f06SMasahiro Yamada * U-Boot add-on: Helper macros to reference to different macros 48*8be60f06SMasahiro Yamada * (CONFIG_ or CONFIG_SPL_ prefixed), depending on the build context. 49*8be60f06SMasahiro Yamada */ 50*8be60f06SMasahiro Yamada #ifdef CONFIG_SPL_BUILD 51*8be60f06SMasahiro Yamada #define _IS_SPL 1 52*8be60f06SMasahiro Yamada #endif 53*8be60f06SMasahiro Yamada 54*8be60f06SMasahiro Yamada #define config_val(cfg) _config_val(_IS_SPL, cfg) 55*8be60f06SMasahiro Yamada #define _config_val(x, cfg) __config_val(x, cfg) 56*8be60f06SMasahiro Yamada #define __config_val(x, cfg) ___config_val(__ARG_PLACEHOLDER_##x, cfg) 57*8be60f06SMasahiro Yamada #define ___config_val(arg1_or_junk, cfg) \ 58*8be60f06SMasahiro Yamada ____config_val(arg1_or_junk CONFIG_SPL_##cfg, CONFIG_##cfg) 59*8be60f06SMasahiro Yamada #define ____config_val(__ignored, val, ...) val 60*8be60f06SMasahiro Yamada 61*8be60f06SMasahiro Yamada /* 62*8be60f06SMasahiro Yamada * CONFIG_VAL(FOO) evaluates to the value of 63*8be60f06SMasahiro Yamada * CONFIG_FOO if CONFIG_SPL_BUILD is undefined, 64*8be60f06SMasahiro Yamada * CONFIG_SPL_FOO if CONFIG_SPL_BUILD is defined. 65*8be60f06SMasahiro Yamada */ 66*8be60f06SMasahiro Yamada #define CONFIG_VAL(option) config_val(option) 67*8be60f06SMasahiro Yamada 68*8be60f06SMasahiro Yamada /* 69*8be60f06SMasahiro Yamada * CONFIG_IS_ENABLED(FOO) evaluates to 70*8be60f06SMasahiro Yamada * 1 if CONFIG_SPL_BUILD is undefined and CONFIG_FOO is set to 'y' or 'm', 71*8be60f06SMasahiro Yamada * 1 if CONFIG_SPL_BUILD is defined and CONFIG_SPL_FOO is set to 'y' or 'm', 72*8be60f06SMasahiro Yamada * 0 otherwise. 73*8be60f06SMasahiro Yamada */ 74*8be60f06SMasahiro Yamada #define CONFIG_IS_ENABLED(option) \ 75*8be60f06SMasahiro Yamada (config_enabled(CONFIG_VAL(option)) || \ 76*8be60f06SMasahiro Yamada config_enabled(CONFIG_VAL(option##_MODULE))) 77*8be60f06SMasahiro Yamada 78*8be60f06SMasahiro Yamada /* 79*8be60f06SMasahiro Yamada * CONFIG_IS_BUILTIN(FOO) evaluates to 80*8be60f06SMasahiro Yamada * 1 if CONFIG_SPL_BUILD is undefined and CONFIG_FOO is set to 'y', 81*8be60f06SMasahiro Yamada * 1 if CONFIG_SPL_BUILD is defined and CONFIG_SPL_FOO is set to 'y', 82*8be60f06SMasahiro Yamada * 0 otherwise. 83*8be60f06SMasahiro Yamada */ 84*8be60f06SMasahiro Yamada #define CONFIG_IS_BUILTIN(option) config_enabled(CONFIG_VAL(option)) 85*8be60f06SMasahiro Yamada 86*8be60f06SMasahiro Yamada /* 87*8be60f06SMasahiro Yamada * CONFIG_IS_MODULE(FOO) evaluates to 88*8be60f06SMasahiro Yamada * 1 if CONFIG_SPL_BUILD is undefined and CONFIG_FOO is set to 'm', 89*8be60f06SMasahiro Yamada * 1 if CONFIG_SPL_BUILD is defined and CONFIG_SPL_FOO is set to 'm', 90*8be60f06SMasahiro Yamada * 0 otherwise. 91*8be60f06SMasahiro Yamada */ 92*8be60f06SMasahiro Yamada #define CONFIG_IS_MODULE(option) config_enabled(CONFIG_VAL(option##_MODULE)) 93*8be60f06SMasahiro Yamada 940a9064fbSMasahiro Yamada #endif /* __LINUX_KCONFIG_H */ 95