1 files changed, 34 insertions, 0 deletions
diff --git a/cgpt/cgpt_nor.h b/cgpt/cgpt_nor.h
new file mode 100644
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--- /dev/null
+++ b/cgpt/cgpt_nor.h
@@ -0,0 +1,34 @@
+/* Copyright 2015 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * This module provides some utility functions to use "flashrom" to read from
+ * and write to NOR flash.
+ */
+
+#ifndef VBOOT_REFERCENCE_CGPT_CGPT_NOR_H_
+#define VBOOT_REFERCENCE_CGPT_CGPT_NOR_H_
+
+// Obtain the MTD size from its sysfs node. |mtd_device| should point to
+// a dev node such as /dev/mtd0. This function returns 0 on success.
+int GetMtdSize(const char *mtd_device, uint64_t *size);
+
+// Exec |argv| in |cwd|. Return -1 on error, or exit code on success. |argv|
+// must be terminated with a NULL element as is required by execv().
+int ForkExecV(const char *cwd, const char *const argv[]);
+
+// Similar to ForkExecV but with a vararg instead of an array of pointers.
+int ForkExecL(const char *cwd, const char *cmd, ...);
+
+// Exec "rm" to remove |dir|.
+int RemoveDir(const char *dir);
+
+// Read RW_GPT from NOR flash to "rw_gpt" in a temp dir |temp_dir_template|.
+// |temp_dir_template| is passed to mkdtemp() so it must satisfy all
+// requirements by mkdtemp().
+int ReadNorFlash(char *temp_dir_template);
+
+// Write "rw_gpt" back to NOR flash. We write the file in two parts for safety.
+int WriteNorFlash(const char *dir);
+
+#endif  // VBOOT_REFERCENCE_CGPT_CGPT_NOR_H_