Remove unused files, and tidy the directory structure of the remaining ones.

Review URL: http://codereview.chromium.org/2815011

firmware/lib/cgptlib/include/cgptlib.h

@@ -0,0 +1,115 @@
+/* Copyright (c) 2010 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.
+ */
+
+#ifndef VBOOT_REFERENCE_CGPTLIB_H_
+#define VBOOT_REFERENCE_CGPTLIB_H_
+
+#include "sysincludes.h"
+
+enum {
+  GPT_SUCCESS = 0,
+  GPT_ERROR_NO_VALID_KERNEL,
+  GPT_ERROR_INVALID_HEADERS,
+  GPT_ERROR_INVALID_ENTRIES,
+  GPT_ERROR_INVALID_SECTOR_SIZE,
+  GPT_ERROR_INVALID_SECTOR_NUMBER,
+  GPT_ERROR_INVALID_UPDATE_TYPE,
+};
+
+/* Bit masks for GptData.modified field. */
+#define GPT_MODIFIED_HEADER1 0x01
+#define GPT_MODIFIED_HEADER2 0x02
+#define GPT_MODIFIED_ENTRIES1 0x04
+#define GPT_MODIFIED_ENTRIES2 0x08
+
+#define TOTAL_ENTRIES_SIZE 16384  /* Size of GptData.primary_entries
+                                   * and secondary_entries: 128
+                                   * bytes/entry * 128 entries. */
+
+/* The 'update_type' of GptUpdateKernelEntry()
+ * We expose TRY and BAD only because those are what verified boot needs.
+ * For more precise control on GPT attribute bits, please refer to
+ * gpt_internal.h */
+enum {
+  GPT_UPDATE_ENTRY_TRY = 1,
+  /* System will be trying to boot the currently selected kernel partition.
+   * Update its try count if necessary. */
+  GPT_UPDATE_ENTRY_BAD = 2,
+  /* The currently selected kernel partition failed validation.  Mark entry as
+   * invalid. */
+};
+
+typedef struct {
+  /* Fill in the following fields before calling GptInit() */
+  uint8_t *primary_header;       /* GPT primary header, from sector 1 of disk
+                                  *   (size: 512 bytes) */
+  uint8_t *secondary_header;     /* GPT secondary header, from last sector of
+                                  *   disk (size: 512 bytes) */
+  uint8_t *primary_entries;      /* primary GPT table, follows primary header
+                                  *   (size: 16 KB) */
+  uint8_t *secondary_entries;    /* secondary GPT table, precedes secondary
+                                  *   header (size: 16 KB) */
+  uint32_t sector_bytes;         /* Size of a LBA sector, in bytes */
+  uint64_t drive_sectors;        /* Size of drive in LBA sectors, in sectors */
+
+  /* Outputs */
+  uint8_t modified;              /* Which inputs have been modified?
+                                  * 0x01 = header1
+                                  * 0x02 = header2
+                                  * 0x04 = table1
+                                  * 0x08 = table2  */
+  int current_kernel; /* the current chromeos kernel index in partition table.
+                       * -1 means not found on drive. */
+
+  /* Internal variables */
+  uint32_t valid_headers, valid_entries;
+  int current_priority;
+} GptData;
+
+int GptInit(GptData* gpt);
+/* Initializes the GPT data structure's internal state.  The following fields
+ * must be filled before calling this function:
+ *
+ *   primary_header
+ *   secondary_header
+ *   primary_entries
+ *   secondary_entries
+ *   sector_bytes
+ *   drive_sectors
+ *
+ * On return the modified field may be set, if the GPT data has been modified
+ * and should be written to disk.
+ *
+ * Returns GPT_SUCCESS if successful, non-zero if error:
+ *   GPT_ERROR_INVALID_HEADERS, both partition table headers are invalid, enters
+ *                              recovery mode,
+ *   GPT_ERROR_INVALID_ENTRIES, both partition table entries are invalid, enters
+ *                              recovery mode,
+ *   GPT_ERROR_INVALID_SECTOR_SIZE, size of a sector is not supported,
+ *   GPT_ERROR_INVALID_SECTOR_NUMBER, number of sectors in drive is invalid (too
+ *                                    small) */
+
+int GptNextKernelEntry(GptData* gpt, uint64_t* start_sector, uint64_t* size);
+/* Provides the location of the next kernel partition, in order of decreasing
+ * priority.  On return the start_sector parameter contains the LBA sector
+ * for the start of the kernel partition, and the size parameter contains the
+ * size of the kernel partition in LBA sectors.  gpt.current_kernel contains
+ * the partition index of the current chromeos kernel partition.
+ *
+ * Returns GPT_SUCCESS if successful, else
+ *   GPT_ERROR_NO_VALID_KERNEL, no avaliable kernel, enters recovery mode */
+
+int GptUpdateKernelEntry(GptData* gpt, uint32_t update_type);
+/* Updates the kernel entry with the specified index, using the specified type
+ * of update (GPT_UPDATE_ENTRY_*).
+ *
+ * On return the modified field may be set, if the GPT data has been modified
+ * and should be written to disk.
+ *
+ * Returns GPT_SUCCESS if successful, else
+ *   GPT_ERROR_INVALID_UPDATE_TYPE, invalid 'update_type' is given.
+ */
+
+#endif  /* VBOOT_REFERENCE_CGPTLIB_H_ */