From db6a2b5c681e30351061df089ab2e86bae4509a9 Mon Sep 17 00:00:00 2001
From: Bin Meng <bmeng.cn@gmail.com>
Date: Tue, 17 Mar 2020 07:59:50 -0700
Subject: lib: utils: Add a general device tree fix-up helper
This adds a general device tree fix-up helper to do all required
device tree fix-ups for a typical platform.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
---
include/sbi_utils/fdt/fdt_helper.h | 13 +++++++++++++
lib/utils/fdt/fdt_helper.c | 7 +++++++
2 files changed, 20 insertions(+)
diff --git a/include/sbi_utils/fdt/fdt_helper.h b/include/sbi_utils/fdt/fdt_helper.h
index d3b065a..079b619 100644
--- a/include/sbi_utils/fdt/fdt_helper.h
+++ b/include/sbi_utils/fdt/fdt_helper.h
@@ -47,4 +47,17 @@ void fdt_plic_fixup(void *fdt, const char *compat);
*/
int fdt_reserved_memory_fixup(void *fdt);
+/**
+ * General device tree fix-up
+ *
+ * This routine do all required device tree fix-ups for a typical platform.
+ * It fixes up the PLIC node and the reserved memory node in the device tree
+ * by calling the corresponding helper routines to accomplish the task.
+ *
+ * It is recommended that platform codes call this helper in their final_init()
+ *
+ * @param fdt: device tree blob
+ */
+void fdt_fixups(void *fdt);
+
#endif /* __FDT_HELPER_H__ */
diff --git a/lib/utils/fdt/fdt_helper.c b/lib/utils/fdt/fdt_helper.c
index 4ef7a5e..47cd1d3 100644
--- a/lib/utils/fdt/fdt_helper.c
+++ b/lib/utils/fdt/fdt_helper.c
@@ -191,3 +191,10 @@ int fdt_reserved_memory_fixup(void *fdt)
return 0;
}
+
+void fdt_fixups(void *fdt)
+{
+ fdt_plic_fixup(fdt, "riscv,plic0");
+
+ fdt_reserved_memory_fixup(fdt);
+}
--
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