git.sur5r.net Git - u-boot/blob - drivers/core/of_extra.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2017 Google, Inc
   4  * Written by Simon Glass <sjg@chromium.org>
   5  */
   6
   7 #include <common.h>
   8 #include <linux/libfdt.h>
   9 #include <dm/of_access.h>
  10 #include <dm/of_extra.h>
  11 #include <dm/ofnode.h>
  12
  13 int of_read_fmap_entry(ofnode node, const char *name,
  14                        struct fmap_entry *entry)
  15 {
  16         const char *prop;
  17         u32 reg[2];
  18
  19         if (ofnode_read_u32_array(node, "reg", reg, 2)) {
  20                 debug("Node '%s' has bad/missing 'reg' property\n", name);
  21                 return -FDT_ERR_NOTFOUND;
  22         }
  23         entry->offset = reg[0];
  24         entry->length = reg[1];
  25         entry->used = ofnode_read_s32_default(node, "used", entry->length);
  26         prop = ofnode_read_string(node, "compress");
  27         entry->compress_algo = prop && !strcmp(prop, "lzo") ?
  28                 FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
  29         prop = ofnode_read_string(node, "hash");
  30         if (prop)
  31                 entry->hash_size = strlen(prop);
  32         entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
  33         entry->hash = (uint8_t *)prop;
  34
  35         return 0;
  36 }