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18e03706df
A lot of functions were added some time ago, nominally to support keeping the firmware in an MTD device that wasn't formatted with the GPT headers. That work was never completed, so these functions aren't used anywhere. We may want to resurrect this work at some future point. Until then, this CL just moves some of the functions into an "unused" file. BUG=chromium:231567 BRANCH=ToT TEST=manual All tests pass, all firmware and external repos build. Change-Id: I420dd52d1cea0418cedf2f8e834c61145915f20c Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/207037 Reviewed-by: Randall Spangler <rspangler@chromium.org>
103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <string.h>
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#include "cgpt.h"
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#include "cgptlib_internal.h"
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#include "vboot_host.h"
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static int GptCreate(struct drive *drive, CgptCreateParams *params) {
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// Erase the data
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memset(drive->gpt.primary_header, 0,
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drive->gpt.sector_bytes * GPT_HEADER_SECTOR);
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memset(drive->gpt.secondary_header, 0,
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drive->gpt.sector_bytes * GPT_HEADER_SECTOR);
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memset(drive->gpt.primary_entries, 0,
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drive->gpt.sector_bytes * GPT_ENTRIES_SECTORS);
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memset(drive->gpt.secondary_entries, 0,
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drive->gpt.sector_bytes * GPT_ENTRIES_SECTORS);
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drive->gpt.modified |= (GPT_MODIFIED_HEADER1 | GPT_MODIFIED_ENTRIES1 |
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GPT_MODIFIED_HEADER2 | GPT_MODIFIED_ENTRIES2);
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// Initialize a blank set
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if (!params->zap) {
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GptHeader *h = (GptHeader *)drive->gpt.primary_header;
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memcpy(h->signature, GPT_HEADER_SIGNATURE, GPT_HEADER_SIGNATURE_SIZE);
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h->revision = GPT_HEADER_REVISION;
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h->size = sizeof(GptHeader);
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h->my_lba = 1;
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h->alternate_lba = drive->gpt.drive_sectors - 1;
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h->first_usable_lba = 1 + 1 + GPT_ENTRIES_SECTORS;
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h->last_usable_lba = drive->gpt.drive_sectors - 1 - GPT_ENTRIES_SECTORS - 1;
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if (CGPT_OK != GenerateGuid(&h->disk_uuid)) {
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Error("Unable to generate new GUID.\n");
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return -1;
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}
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h->entries_lba = 2;
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h->number_of_entries = 128;
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h->size_of_entry = sizeof(GptEntry);
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// Copy to secondary
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RepairHeader(&drive->gpt, MASK_PRIMARY);
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UpdateCrc(&drive->gpt);
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}
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return 0;
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}
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static int MtdCreate(struct drive *drive, CgptCreateParams *params) {
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MtdDiskLayout *h = &drive->mtd.primary;
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memset(h, 0, sizeof(*h));
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drive->mtd.modified = 1;
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if (!params->zap) {
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// Prep basic parameters
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memcpy(h->signature, MTD_DRIVE_SIGNATURE, sizeof(h->signature));
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h->size = sizeof(*h);
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h->first_offset = 0;
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h->last_offset = (drive->mtd.drive_sectors * drive->mtd.sector_bytes) - 1;
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h->crc32 = MtdHeaderCrc(h);
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}
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if (params->size) {
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h->last_offset = params->size - 1;
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drive->size = params->size;
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drive->mtd.drive_sectors = drive->size / drive->mtd.sector_bytes;
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} else if (!drive->mtd.drive_sectors) {
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Error("MTD create with params->size == 0 && drive->mtd.drive_sectors == 0");
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return -1;
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}
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return 0;
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}
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int CgptCreate(CgptCreateParams *params) {
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struct drive drive;
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if (params == NULL)
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return CGPT_FAILED;
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if (CGPT_OK != DriveOpen(params->drive_name, &drive, O_RDWR))
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return CGPT_FAILED;
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if (drive.is_mtd) {
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if (MtdCreate(&drive, params))
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goto bad;
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} else {
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if (GptCreate(&drive, params))
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goto bad;
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}
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// Write it all out
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return DriveClose(&drive, 1);
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bad:
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DriveClose(&drive, 0);
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return CGPT_FAILED;
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}
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