lib: utils: Move fdt fixup helper routines to a different file

FDT helper file contain both fdt fixup and parsing functions.

Split the fixup related functions to a separate file for a better code
organization.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

2 files changed, 67 insertions, 53 deletions

diff --git a/include/sbi_utils/fdt/fdt_fixup.h b/include/sbi_utils/fdt/fdt_fixup.h
new file mode 100644
index 0000000..54568c2
--- /dev/null
+++ b/include/sbi_utils/fdt/fdt_fixup.h
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: BSD-2-Clause
+/*
+ * fdt_fixup.h - Flat Device Tree manipulation helper routines
+ * Implement platform specific DT fixups on top of libfdt. 
+ *
+ * Copyright (C) 2020 Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#ifndef __FDT_FIXUP_H__
+#define __FDT_FIXUP_H__
+
+/**
+ * Fix up the CPU node in the device tree
+ *
+ * This routine updates the "status" property of a CPU node in the device tree
+ * to "disabled" if that hart is in disabled state in OpenSBI.
+ *
+ * It is recommended that platform codes call this helper in their final_init()
+ *
+ * @param fdt: device tree blob
+ */
+void fdt_cpu_fixup(void *fdt);
+
+/**
+ * Fix up the PLIC node in the device tree
+ *
+ * This routine updates the "interrupt-extended" property of the PLIC node in
+ * the device tree to hide the M-mode external interrupt from CPUs.
+ *
+ * It is recommended that platform codes call this helper in their final_init()
+ *
+ * @param fdt: device tree blob
+ * @param compat: PLIC node compatible string
+ */
+void fdt_plic_fixup(void *fdt, const char *compat);
+
+/**
+ * Fix up the reserved memory node in the device tree
+ *
+ * This routine inserts a child node of the reserved memory node in the device
+ * tree that describes the protected memory region done by OpenSBI via PMP.
+ *
+ * It is recommended that platform codes call this helper in their final_init()
+ *
+ * @param fdt: device tree blob
+ * @return zero on success and -ve on failure
+ */
+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_FIXUP_H__ */
+
diff --git a/include/sbi_utils/fdt/fdt_helper.h b/include/sbi_utils/fdt/fdt_helper.h
index 42baeab..06b8a62 100644
--- a/include/sbi_utils/fdt/fdt_helper.h
+++ b/include/sbi_utils/fdt/fdt_helper.h
@@ -1,7 +1,8 @@
 // SPDX-License-Identifier: BSD-2-Clause
 /*
- * fdt_helper.h - Flat Device Tree manipulation helper routines
- * Implement helper routines on top of libfdt for OpenSBI usage
+ * 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>
  */
@@ -29,55 +30,4 @@ int fdt_parse_plic(void *fdt, struct platform_plic_data *plic,
 int fdt_parse_clint(void *fdt, unsigned long *clint_addr,
 		    const char *compatible);
 
-/**
- * Fix up the CPU node in the device tree
- *
- * This routine updates the "status" property of a CPU node in the device tree
- * to "disabled" if that hart is in disabled state in OpenSBI.
- *
- * It is recommended that platform codes call this helper in their final_init()
- *
- * @param fdt: device tree blob
- */
-void fdt_cpu_fixup(void *fdt);
-
-/**
- * Fix up the PLIC node in the device tree
- *
- * This routine updates the "interrupt-extended" property of the PLIC node in
- * the device tree to hide the M-mode external interrupt from CPUs.
- *
- * It is recommended that platform codes call this helper in their final_init()
- *
- * @param fdt: device tree blob
- * @param compat: PLIC node compatible string
- */
-void fdt_plic_fixup(void *fdt, const char *compat);
-
-/**
- * Fix up the reserved memory node in the device tree
- *
- * This routine inserts a child node of the reserved memory node in the device
- * tree that describes the protected memory region done by OpenSBI via PMP.
- *
- * It is recommended that platform codes call this helper in their final_init()
- *
- * @param fdt: device tree blob
- * @return zero on success and -ve on failure
- */
-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__ */