src/include/imd_private.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef _IMD_PRIVATE_H_
   4 #define _IMD_PRIVATE_H_
   5
   6 #include <cbmem.h>
   7 #include <commonlib/bsd/helpers.h>
   8
   9 /* In-memory data structures. */
  10 struct imd_root_pointer {
  11         uint32_t magic;
  12         /* Relative to upper limit/offset. */
  13         int32_t root_offset;
  14 } __packed;
  15
  16 struct imd_entry {
  17         uint32_t magic;
  18         /* start is located relative to imd_root */
  19         int32_t start_offset;
  20         uint32_t size;
  21         uint32_t id;
  22 } __packed;
  23
  24 struct imd_root {
  25         uint32_t max_entries;
  26         uint32_t num_entries;
  27         uint32_t flags;
  28         uint32_t entry_align;
  29         /* Used for fixing the size of an imd. Relative to the root. */
  30         int32_t max_offset;
  31         struct imd_entry entries[];
  32 } __packed;
  33
  34 #define IMD_ROOT_PTR_MAGIC  0xc0389481
  35 #define IMD_ENTRY_MAGIC  (~0xc0389481)
  36 #define SMALL_REGION_ID  CBMEM_ID_IMD_SMALL
  37 #define LIMIT_ALIGN 4096
  38
  39 #define IMD_FLAG_LOCKED 1
  40
  41 #endif /* _IMD_PRIVATE_H */