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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>
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/* Copyright (c) 2013 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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*/
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#include "mtdlib.h"
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#include "cgptlib.h"
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#include "cgptlib_internal.h"
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#include "crc32.h"
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#include "utility.h"
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#include "vboot_api.h"
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const int kSectorShift = 9; /* 512 bytes / sector. */
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int MtdGetEntryPriority(const MtdDiskPartition *e) {
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return ((e->flags & MTD_ATTRIBUTE_PRIORITY_MASK) >>
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MTD_ATTRIBUTE_PRIORITY_OFFSET);
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}
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int MtdGetEntryTries(const MtdDiskPartition *e) {
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return ((e->flags & MTD_ATTRIBUTE_TRIES_MASK) >>
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MTD_ATTRIBUTE_TRIES_OFFSET);
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}
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int MtdGetEntrySuccessful(const MtdDiskPartition *e) {
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return ((e->flags & MTD_ATTRIBUTE_SUCCESSFUL_MASK) >>
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MTD_ATTRIBUTE_SUCCESSFUL_OFFSET);
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}
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int MtdGetEntryType(const MtdDiskPartition *e) {
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return ((e->flags & MTD_ATTRIBUTE_TYPE_MASK) >> MTD_ATTRIBUTE_TYPE_OFFSET);
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}
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static void SetBitfield(MtdDiskPartition *e,
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uint32_t offset, uint32_t mask, uint32_t v) {
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e->flags = (e->flags & ~mask) | ((v << offset) & mask);
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}
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void MtdSetEntrySuccessful(MtdDiskPartition *e, int successful) {
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SetBitfield(e, MTD_ATTRIBUTE_SUCCESSFUL_OFFSET,
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MTD_ATTRIBUTE_SUCCESSFUL_MASK, successful);
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}
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void MtdSetEntryPriority(MtdDiskPartition *e, int priority) {
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SetBitfield(e, MTD_ATTRIBUTE_PRIORITY_OFFSET, MTD_ATTRIBUTE_PRIORITY_MASK,
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priority);
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}
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void MtdSetEntryTries(MtdDiskPartition *e, int tries) {
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SetBitfield(e, MTD_ATTRIBUTE_TRIES_OFFSET, MTD_ATTRIBUTE_TRIES_MASK, tries);
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}
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void MtdSetEntryType(MtdDiskPartition *e, int type) {
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SetBitfield(e, MTD_ATTRIBUTE_TYPE_OFFSET, MTD_ATTRIBUTE_TYPE_MASK, type);
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}
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uint32_t MtdHeaderCrc(MtdDiskLayout *h) {
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uint32_t crc32, original_crc32;
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/* Original CRC is calculated with the CRC field 0. */
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original_crc32 = h->crc32;
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h->crc32 = 0;
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crc32 = Crc32((const uint8_t *)h, h->size);
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h->crc32 = original_crc32;
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return crc32;
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}
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void MtdGetPartitionSize(const MtdDiskPartition *e,
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uint64_t *start, uint64_t *end, uint64_t *size) {
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uint64_t start_tmp, end_tmp;
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if (!start)
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start = &start_tmp;
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if (!end)
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end = &end_tmp;
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Memcpy(start, &e->starting_offset, sizeof(e->starting_offset));
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Memcpy(end, &e->ending_offset, sizeof(e->ending_offset));
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if (size) {
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*size = *end - *start + 1;
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}
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}
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void MtdGetPartitionSizeInSectors(const MtdDiskPartition *e, uint64_t *start,
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uint64_t *end, uint64_t *size) {
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MtdGetPartitionSize(e, start, end, size);
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if (start)
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*start >>= kSectorShift;
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if (end)
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*end >>= kSectorShift;
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if (size)
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*size >>= kSectorShift;
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}
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