payloads/libpayload/include/cbfs_glue.h

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2
   3 #ifndef _CBFS_CBFS_GLUE_H
   4 #define _CBFS_CBFS_GLUE_H
   5
   6 #include <libpayload-config.h>
   7 #include <boot_device.h>
   8 #include <stdbool.h>
   9 #include <stdio.h>
  10
  11 #define CBFS_ENABLE_HASHING CONFIG(LP_CBFS_VERIFICATION)
  12 #define CBFS_HASH_HWCRYPTO cbfs_hwcrypto_allowed()
  13
  14 #define ERROR(...) printf("CBFS ERROR: " __VA_ARGS__)
  15 #define LOG(...) printf("CBFS: " __VA_ARGS__)
  16 #define DEBUG(...)                                                                             \
  17         do {                                                                                   \
  18                 if (CONFIG(LP_DEBUG_CBFS))                                                     \
  19                         printf("CBFS DEBUG: " __VA_ARGS__);                                    \
  20         } while (0)
  21
  22 struct cbfs_dev {
  23         size_t offset;
  24         size_t size;
  25 };
  26
  27 struct cbfs_boot_device {
  28         struct cbfs_dev dev;
  29         void *mcache;
  30         size_t mcache_size;
  31 };
  32
  33 typedef const struct cbfs_dev *cbfs_dev_t;
  34
  35 static inline ssize_t cbfs_dev_read(cbfs_dev_t dev, void *buffer, size_t offset, size_t size)
  36 {
  37         if (offset + size < offset || offset + size > dev->size)
  38                 return CB_ERR_ARG;
  39
  40         return boot_device_read(buffer, dev->offset + offset, size);
  41 }
  42
  43 static inline size_t cbfs_dev_size(cbfs_dev_t dev)
  44 {
  45         return dev->size;
  46 }
  47
  48 bool cbfs_hwcrypto_allowed(void);
  49
  50 #endif /* _CBFS_CBFS_GLUE_H */