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Diffstat (limited to 'firmware/lib/cgptlib/include/mtdlib.h')
| -rw-r--r-- | firmware/lib/cgptlib/include/mtdlib.h | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/firmware/lib/cgptlib/include/mtdlib.h b/firmware/lib/cgptlib/include/mtdlib.h deleted file mode 100644 index 916c9fab..00000000 --- a/firmware/lib/cgptlib/include/mtdlib.h +++ /dev/null @@ -1,145 +0,0 @@ -/* Copyright (c) 2013 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_MTDLIB_H_ -#define VBOOT_REFERENCE_MTDLIB_H_ - -#include "cgptlib.h" -#include "sysincludes.h" - - -#define MTD_DRIVE_SIGNATURE "CrOSPart" /* This must be exactly 8 chars */ - -/* - * Bit definitions and masks for MTD attributes. - * - * 13-16 -- partition number - * 9-12 -- partition type - * 8 -- success - * 7-4 -- tries - * 3-0 -- priority - */ -#define MTD_ATTRIBUTE_PRIORITY_OFFSET (0) -#define MTD_ATTRIBUTE_MAX_PRIORITY (15UL) -#define MTD_ATTRIBUTE_PRIORITY_MASK (MTD_ATTRIBUTE_MAX_PRIORITY << \ - MTD_ATTRIBUTE_PRIORITY_OFFSET) - -#define MTD_ATTRIBUTE_TRIES_OFFSET (4) -#define MTD_ATTRIBUTE_MAX_TRIES (15UL) -#define MTD_ATTRIBUTE_TRIES_MASK (MTD_ATTRIBUTE_MAX_TRIES << \ - MTD_ATTRIBUTE_TRIES_OFFSET) - -#define MTD_ATTRIBUTE_SUCCESSFUL_OFFSET (8) -#define MTD_ATTRIBUTE_MAX_SUCCESSFUL (1UL) -#define MTD_ATTRIBUTE_SUCCESSFUL_MASK (MTD_ATTRIBUTE_MAX_SUCCESSFUL << \ - MTD_ATTRIBUTE_SUCCESSFUL_OFFSET) - -#define MTD_ATTRIBUTE_TYPE_OFFSET (9) -#define MTD_ATTRIBUTE_MAX_TYPE (15UL) -#define MTD_ATTRIBUTE_TYPE_MASK (MTD_ATTRIBUTE_MAX_TYPE << \ - MTD_ATTRIBUTE_TYPE_OFFSET) - -#define MTD_ATTRIBUTE_NUMBER_OFFSET (13) -#define MTD_ATTRIBUTE_MAX_NUMBER (15UL) -#define MTD_ATTRIBUTE_NUMBER_MASK (MTD_ATTRIBUTE_MAX_NUMBER << \ - MTD_ATTRIBUTE_NUMBER_OFFSET) - - -#define MTD_PARTITION_TYPE_UNUSED 0 -#define MTD_PARTITION_TYPE_CHROMEOS_KERNEL 1 -#define MTD_PARTITION_TYPE_CHROMEOS_FIRMWARE 2 -#define MTD_PARTITION_TYPE_CHROMEOS_ROOTFS 3 -#define MTD_PARTITION_TYPE_CHROMEOS_RESERVED 4 -#define MTD_PARTITION_TYPE_CHROMEOS_FLAGSTORE 5 -#define MTD_PARTITION_TYPE_LINUX_DATA 6 -#define MTD_PARTITION_TYPE_EFI 7 -#define MTD_PARTITION_TYPE_OTHER 8 - -/* This is mostly arbitrary at the moment, but gives a little room to expand. */ -#define MTD_MAX_PARTITIONS 16 - - - -typedef struct { - uint64_t starting_offset; - uint64_t ending_offset; - uint32_t flags; - - /* 28 characters is a balance between GPT parity and size constraints, at - * current sizes this table occupies 10% of the FTS data store. - */ - char label[28]; -} __attribute__((packed)) MtdDiskPartition; - -typedef struct { - unsigned char signature[8]; - /* For compatibility, this is only ever the CRC of the first - * MTD_DRIVE_V1_SIZE bytes. Further extensions must include their own CRCs, - * so older FW can boot newer layouts if we expand in the future. - */ - uint32_t crc32; - uint32_t size; - uint64_t first_offset; - uint64_t last_offset; - MtdDiskPartition partitions[MTD_MAX_PARTITIONS]; -} __attribute__((packed)) MtdDiskLayout; - -#define MTD_DRIVE_V1_SIZE (32 + 16*48) - -#define MTDENTRY_EXPECTED_SIZE (48) -#define MTDLAYOUT_EXPECTED_SIZE (32 + 16 * MTDENTRY_EXPECTED_SIZE) - - -typedef struct { - /* Specifies the flash geometry, in erase blocks & write pages */ - uint32_t flash_block_bytes; - uint32_t flash_page_bytes; - - /* Location, in blocks, of FTS partition */ - uint32_t fts_block_offset; - /* Size, in blocks, of FTS partition */ - uint32_t fts_block_size; - - /* Size of a LBA sector, in bytes */ - uint32_t sector_bytes; - /* Size of drive in LBA sectors, in sectors */ - uint64_t drive_sectors; - - /* - * The current chromeos kernel index in partition table. -1 means not - * found on drive. - */ - int current_kernel; - int current_priority; - - /* If set, the flags partition has been modified and needs to be flushed */ - int modified; - - /* Internal variables */ - MtdDiskLayout primary; -} MtdData; - - -/* APIs are documented in cgptlib.h & cgptlib_internal.h */ -int MtdGetEntryPriority(const MtdDiskPartition *e); -int MtdGetEntryTries(const MtdDiskPartition *e); -int MtdGetEntrySuccessful(const MtdDiskPartition *e); -int MtdGetEntryType(const MtdDiskPartition *e); -void MtdSetEntrySuccessful(MtdDiskPartition *e, int successful) ; -void MtdSetEntryPriority(MtdDiskPartition *e, int priority); -void MtdSetEntryTries(MtdDiskPartition *e, int tries); -void MtdSetEntryType(MtdDiskPartition *e, int type); - -void MtdGetPartitionSize(const MtdDiskPartition *e, - uint64_t *start, uint64_t *end, uint64_t *size); - -void MtdGetPartitionSizeInSectors(const MtdDiskPartition *e, uint64_t *start, - uint64_t *end, uint64_t *size); - -int MtdGptInit(MtdData *mtd); -uint32_t MtdHeaderCrc(MtdDiskLayout *h); - -#endif - |