of_extra.c 970 B

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2017 Google, Inc
  4. * Written by Simon Glass <sjg@chromium.org>
  5. */
  6. #include <common.h>
  7. #include <linux/libfdt.h>
  8. #include <dm/of_access.h>
  9. #include <dm/of_extra.h>
  10. #include <dm/ofnode.h>
  11. int of_read_fmap_entry(ofnode node, const char *name,
  12. struct fmap_entry *entry)
  13. {
  14. const char *prop;
  15. u32 reg[2];
  16. if (ofnode_read_u32_array(node, "reg", reg, 2)) {
  17. debug("Node '%s' has bad/missing 'reg' property\n", name);
  18. return -FDT_ERR_NOTFOUND;
  19. }
  20. entry->offset = reg[0];
  21. entry->length = reg[1];
  22. entry->used = ofnode_read_s32_default(node, "used", entry->length);
  23. prop = ofnode_read_string(node, "compress");
  24. entry->compress_algo = prop && !strcmp(prop, "lzo") ?
  25. FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
  26. prop = ofnode_read_string(node, "hash");
  27. if (prop)
  28. entry->hash_size = strlen(prop);
  29. entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
  30. entry->hash = (uint8_t *)prop;
  31. return 0;
  32. }