libmisc/rtems-fdt: Add RTEMS FDT wrapper and shell command to libmisc.

- Provide application support for handling FDT blobs in RTEMS. This
  is useful when interfacing FPGA fabrics.
- Provide a shell command to list a blob as well as provide read
  and write access to addresses in the FTB.

Closes #3099.

1 files changed, 42 insertions, 0 deletions

diff --git a/cpukit/libmisc/rtems-fdt/rtems-fdt-shell.h b/cpukit/libmisc/rtems-fdt/rtems-fdt-shell.h
new file mode 100644
index 0000000000..74e9a44aaf
--- /dev/null
+++ b/cpukit/libmisc/rtems-fdt/rtems-fdt-shell.h
@@ -0,0 +1,42 @@
+/*
+ *  COPYRIGHT (c) 2013-2017 Chris Johns <chrisj@rtems.org>
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+/**
+ * @file
+ *
+ * @ingroup rtems_fdt
+ *
+ * @brief RTEMS Flattened Device Tree Shell Command
+ *
+ * Support for loading, managing and accessing FDT blobs in RTEMS.
+ */
+
+#if !defined (_RTEMS_FDT_SHELL_H_)
+#define _RTEMS_FDT_SHELL_H_
+
+#include <rtems/rtems-fdt.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * Add a shell command to access memory and registers associated with the DTF.
+ */
+void rtems_fdt_add_shell_command (void);
+
+/**
+ * Get a pointer to the handle. You can use this to load files or register
+ * blobs and have the shell command access them.
+ */
+rtems_fdt_handle* rtems_fdt_get_shell_handle (void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif