Merge branch 'aosp/upstream-master' into HEADandroid-s-preview-1

This keeps the bl31 interface change reverted which still has not been
fixed in upstream U-Boot for rockchip devices.

Test: CROSS_COMPILE=aarch64-linux-gnu- make PLAT=rk3399 \
        DEBUG=0 ERROR_DEPRECATED=1 bl31
Signed-off-by: Alistair Delva <adelva@google.com>
Change-Id: I7c3972a7b767715efb05593096d5d92dba14c609

1 files changed, 69 insertions, 0 deletions

diff --git a/include/lib/fconf/fconf.h b/include/lib/fconf/fconf.h
new file mode 100644
index 000000000..917e053bd
--- /dev/null
+++ b/include/lib/fconf/fconf.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2019-2020, ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef FCONF_H
+#define FCONF_H
+
+#include <stdint.h>
+
+/* Public API */
+#define FCONF_GET_PROPERTY(a, b, c)	a##__##b##_getter(c)
+
+/*
+ * This macro takes three arguments:
+ *   config:	Configuration identifier
+ *   name:	property namespace
+ *   callback:	populate() function
+ */
+#define FCONF_REGISTER_POPULATOR(config, name, callback)			\
+	__attribute__((used, section(".fconf_populator")))			\
+	const struct fconf_populator (name##__populator) = {			\
+		.config_type = (#config),					\
+		.info = (#name),						\
+		.populate = (callback)						\
+	};
+
+/*
+ * Populator callback
+ *
+ * This structure are used by the fconf_populate function and should only be
+ * defined by the FCONF_REGISTER_POPULATOR macro.
+ */
+struct fconf_populator {
+	/* Description of the data loaded by the callback */
+	const char *config_type;
+	const char *info;
+
+	/* Callback used by fconf_populate function with a provided config dtb.
+	 * Return 0 on success, err_code < 0 otherwise.
+	 */
+	int (*populate)(uintptr_t config);
+};
+
+/* This function supports to load tb_fw_config and fw_config dtb */
+int fconf_load_config(unsigned int image_id);
+
+/* Top level populate function
+ *
+ * This function takes a configuration dtb and calls all the registered
+ * populator callback with it.
+ *
+ *  Panic on error.
+ */
+void fconf_populate(const char *config_type, uintptr_t config);
+
+/* FCONF specific getter */
+#define fconf__dtb_getter(prop)	fconf_dtb_info.prop
+
+/* Structure used to locally keep a reference to the config dtb. */
+struct fconf_dtb_info_t {
+	uintptr_t base_addr;
+	size_t size;
+};
+
+extern struct fconf_dtb_info_t fconf_dtb_info;
+
+#endif /* FCONF_H */