include/drivers/partition/partition.h

   1 /*
   2  * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6
   7 #ifndef PARTITION_H
   8 #define PARTITION_H
   9
  10 #include <stdint.h>
  11
  12 #include <lib/cassert.h>
  13
  14 #if !PLAT_PARTITION_MAX_ENTRIES
  15 # define PLAT_PARTITION_MAX_ENTRIES     128
  16 #endif  /* PLAT_PARTITION_MAX_ENTRIES */
  17
  18 CASSERT(PLAT_PARTITION_MAX_ENTRIES <= 128, assert_plat_partition_max_entries);
  19
  20 #if !PLAT_PARTITION_BLOCK_SIZE
  21 # define PLAT_PARTITION_BLOCK_SIZE      512
  22 #endif /* PLAT_PARTITION_BLOCK_SIZE */
  23
  24 CASSERT((PLAT_PARTITION_BLOCK_SIZE == 512) ||
  25         (PLAT_PARTITION_BLOCK_SIZE == 4096),
  26         assert_plat_partition_block_size);
  27
  28 #define LEGACY_PARTITION_BLOCK_SIZE     512
  29
  30 #define EFI_NAMELEN                     36
  31
  32 typedef struct partition_entry {
  33         uint64_t                start;
  34         uint64_t                length;
  35         char                    name[EFI_NAMELEN];
  36 } partition_entry_t;
  37
  38 typedef struct partition_entry_list {
  39         partition_entry_t       list[PLAT_PARTITION_MAX_ENTRIES];
  40         int                     entry_count;
  41 } partition_entry_list_t;
  42
  43 int load_partition_table(unsigned int image_id);
  44 const partition_entry_t *get_partition_entry(const char *name);
  45 const partition_entry_list_t *get_partition_entry_list(void);
  46 void partition_init(unsigned int image_id);
  47
  48 #endif /* PARTITION_H */