1 files changed, 53 insertions, 0 deletions
diff --git a/src/include/fw_config.h b/src/include/fw_config.h
new file mode 100644
index 0000000000..d41afd6c5d
--- /dev/null
+++ b/src/include/fw_config.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __FW_CONFIG__
+#define __FW_CONFIG__
+
+#include <device/device.h>
+#include <static.h>  /* Provides fw_config definitions from devicetree.cb */
+#include <stdbool.h>
+#include <stdint.h>
+
+/**
+ * struct fw_config - Firmware configuration field and option.
+ * @field_name: Name of the field that this option belongs to.
+ * @option_name: Name of the option within this field.
+ * @mask: Bitmask of the field.
+ * @value: Value of the option within the mask.
+ */
+struct fw_config {
+	const char *field_name;
+	const char *option_name;
+	uint32_t mask;
+	uint32_t value;
+};
+
+/* Generate a pointer to a compound literal of the fw_config structure. */
+#define FW_CONFIG(__field, __option)	(&(const struct fw_config) {		\
+	.field_name = FW_CONFIG_FIELD_##__field##_NAME,				\
+	.option_name = FW_CONFIG_FIELD_##__field##_OPTION_##__option##_NAME,	\
+	.mask = FW_CONFIG_FIELD_##__field##_MASK,				\
+	.value = FW_CONFIG_FIELD_##__field##_OPTION_##__option##_VALUE		\
+})
+
+#if CONFIG(FW_CONFIG)
+
+/**
+ * fw_config_probe() - Check if field and option matches.
+ * @match: Structure containing field and option to probe.
+ *
+ * Return %true if match is found, %false if match is not found.
+ */
+bool fw_config_probe(const struct fw_config *match);
+
+#else
+
+static inline bool fw_config_probe(const struct fw_config *match)
+{
+	/* Always return true when probing with disabled fw_config. */
+	return true;
+}
+
+#endif /* CONFIG(FW_CONFIG) */
+
+#endif /* __FW_CONFIG__ */