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authorAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
committerAngelos Mouzakitis <a.mouzakitis@virtualopensystems.com>2023-10-10 14:33:42 +0000
commitaf1a266670d040d2f4083ff309d732d648afba2a (patch)
tree2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/include/linux/kconfig.h
parente02cda008591317b1625707ff8e115a4841aa889 (diff)
Add submodule dependency filesHEADmaster
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/include/linux/kconfig.h')
-rw-r--r--roms/u-boot/include/linux/kconfig.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/roms/u-boot/include/linux/kconfig.h b/roms/u-boot/include/linux/kconfig.h
new file mode 100644
index 000000000..d109ed311
--- /dev/null
+++ b/roms/u-boot/include/linux/kconfig.h
@@ -0,0 +1,110 @@
+#ifndef __LINUX_KCONFIG_H
+#define __LINUX_KCONFIG_H
+
+#include <generated/autoconf.h>
+
+/*
+ * Helper macros to use CONFIG_ options in C/CPP expressions. Note that
+ * these only work with boolean and tristate options.
+ */
+
+/*
+ * Getting something that works in C and CPP for an arg that may or may
+ * not be defined is tricky. Here, if we have "#define CONFIG_BOOGER 1"
+ * we match on the placeholder define, insert the "0," for arg1 and generate
+ * the triplet (0, 1, 0). Then the last step cherry picks the 2nd arg (a one).
+ * When CONFIG_BOOGER is not defined, we generate a (... 1, 0) pair, and when
+ * the last step cherry picks the 2nd arg, we get a zero.
+ */
+#define __ARG_PLACEHOLDER_1 0,
+#define config_enabled(cfg) _config_enabled(cfg)
+#define _config_enabled(value) __config_enabled(__ARG_PLACEHOLDER_##value)
+#define __config_enabled(arg1_or_junk) ___config_enabled(arg1_or_junk 1, 0)
+#define ___config_enabled(__ignored, val, ...) val
+
+/*
+ * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y',
+ * 0 otherwise.
+ *
+ */
+#define IS_ENABLED(option) \
+ (config_enabled(option))
+
+/*
+ * U-Boot add-on: Helper macros to reference to different macros
+ * (CONFIG_ or CONFIG_SPL_ prefixed), depending on the build context.
+ */
+
+#if defined(CONFIG_TPL_BUILD)
+#define _CONFIG_PREFIX TPL_
+#elif defined(CONFIG_SPL_BUILD)
+#define _CONFIG_PREFIX SPL_
+#else
+#define _CONFIG_PREFIX
+#endif
+
+#define config_val(cfg) _config_val(_CONFIG_PREFIX, cfg)
+#define _config_val(pfx, cfg) __config_val(pfx, cfg)
+#define __config_val(pfx, cfg) CONFIG_ ## pfx ## cfg
+
+/*
+ * CONFIG_VAL(FOO) evaluates to the value of
+ * CONFIG_FOO if CONFIG_SPL_BUILD is undefined,
+ * CONFIG_SPL_FOO if CONFIG_SPL_BUILD is defined.
+ * CONFIG_TPL_FOO if CONFIG_TPL_BUILD is defined.
+ */
+#define CONFIG_VAL(option) config_val(option)
+
+/*
+ * Count number of arguments to a variadic macro. Currently only need
+ * it for 1, 2 or 3 arguments.
+ */
+#define __arg6(a1, a2, a3, a4, a5, a6, ...) a6
+#define __count_args(...) __arg6(dummy, ##__VA_ARGS__, 4, 3, 2, 1, 0)
+
+#define __concat(a, b) ___concat(a, b)
+#define ___concat(a, b) a ## b
+
+#define __unwrap(...) __VA_ARGS__
+#define __unwrap1(case1, case0) __unwrap case1
+#define __unwrap0(case1, case0) __unwrap case0
+
+#define __CONFIG_IS_ENABLED_1(option) __CONFIG_IS_ENABLED_3(option, (1), (0))
+#define __CONFIG_IS_ENABLED_2(option, case1) __CONFIG_IS_ENABLED_3(option, case1, ())
+#define __CONFIG_IS_ENABLED_3(option, case1, case0) \
+ __concat(__unwrap, config_enabled(CONFIG_VAL(option))) (case1, case0)
+
+/*
+ * CONFIG_IS_ENABLED(FOO) expands to
+ * 1 if CONFIG_SPL_BUILD is undefined and CONFIG_FOO is set to 'y',
+ * 1 if CONFIG_SPL_BUILD is defined and CONFIG_SPL_FOO is set to 'y',
+ * 1 if CONFIG_TPL_BUILD is defined and CONFIG_TPL_FOO is set to 'y',
+ * 0 otherwise.
+ *
+ * CONFIG_IS_ENABLED(FOO, (abc)) expands to
+ * abc if CONFIG_SPL_BUILD is undefined and CONFIG_FOO is set to 'y',
+ * abc if CONFIG_SPL_BUILD is defined and CONFIG_SPL_FOO is set to 'y',
+ * abc if CONFIG_TPL_BUILD is defined and CONFIG_TPL_FOO is set to 'y',
+ * nothing otherwise.
+ *
+ * CONFIG_IS_ENABLED(FOO, (abc), (def)) expands to
+ * abc if CONFIG_SPL_BUILD is undefined and CONFIG_FOO is set to 'y',
+ * abc if CONFIG_SPL_BUILD is defined and CONFIG_SPL_FOO is set to 'y',
+ * abc if CONFIG_TPL_BUILD is defined and CONFIG_TPL_FOO is set to 'y',
+ * def otherwise.
+ *
+ * The optional second and third arguments must be parenthesized; that
+ * allows one to include a trailing comma, e.g. for use in
+ *
+ * CONFIG_IS_ENABLED(ACME, ({.compatible = "acme,frobnozzle"},))
+ *
+ * which adds an entry to the array being defined if CONFIG_ACME (or
+ * CONFIG_SPL_ACME/CONFIG_TPL_ACME, depending on build context) is
+ * set, and nothing otherwise.
+ */
+
+#define CONFIG_IS_ENABLED(option, ...) \
+ __concat(__CONFIG_IS_ENABLED_, __count_args(option, ##__VA_ARGS__)) (option, ##__VA_ARGS__)
+
+
+#endif /* __LINUX_KCONFIG_H */