1 files changed, 68 insertions, 0 deletions
diff --git a/roms/opensbi/include/sbi_utils/fdt/fdt_helper.h b/roms/opensbi/include/sbi_utils/fdt/fdt_helper.h
new file mode 100644
index 000000000..f5222deb4
--- /dev/null
+++ b/roms/opensbi/include/sbi_utils/fdt/fdt_helper.h
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: BSD-2-Clause
+/*
+ * fdt_helper.h - Flat Device Tree parsing helper routines
+ * Implement helper routines to parse FDT nodes on top of
+ * libfdt for OpenSBI usage
+ *
+ * Copyright (C) 2020 Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#ifndef __FDT_HELPER_H__
+#define __FDT_HELPER_H__
+
+#include <sbi/sbi_types.h>
+
+struct fdt_match {
+	const char *compatible;
+	void *data;
+};
+
+struct platform_uart_data {
+	unsigned long addr;
+	unsigned long freq;
+	unsigned long baud;
+	unsigned long reg_shift;
+	unsigned long reg_io_width;
+};
+
+const struct fdt_match *fdt_match_node(void *fdt, int nodeoff,
+				       const struct fdt_match *match_table);
+
+int fdt_find_match(void *fdt, int startoff,
+		   const struct fdt_match *match_table,
+		   const struct fdt_match **out_match);
+
+int fdt_get_node_addr_size(void *fdt, int node, unsigned long *addr,
+			   unsigned long *size);
+
+int fdt_parse_hart_id(void *fdt, int cpu_offset, u32 *hartid);
+
+int fdt_parse_max_hart_id(void *fdt, u32 *max_hartid);
+
+int fdt_parse_shakti_uart_node(void *fdt, int nodeoffset,
+			       struct platform_uart_data *uart);
+
+int fdt_parse_sifive_uart_node(void *fdt, int nodeoffset,
+			       struct platform_uart_data *uart);
+
+int fdt_parse_uart8250_node(void *fdt, int nodeoffset,
+			    struct platform_uart_data *uart);
+
+int fdt_parse_uart8250(void *fdt, struct platform_uart_data *uart,
+		       const char *compatible);
+
+struct plic_data;
+
+int fdt_parse_plic_node(void *fdt, int nodeoffset, struct plic_data *plic);
+
+int fdt_parse_plic(void *fdt, struct plic_data *plic, const char *compat);
+
+struct clint_data;
+
+int fdt_parse_clint_node(void *fdt, int nodeoffset, bool for_timer,
+			 struct clint_data *clint);
+
+int fdt_parse_compat_addr(void *fdt, unsigned long *addr,
+			  const char *compatible);
+
+#endif /* __FDT_HELPER_H__ */