1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (c) 2017 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
10 #include <dm/ofnode.h>
12 enum fmap_compress_t {
23 /* A flash map entry, containing an offset and length */
27 uint32_t used; /* Number of bytes used in region */
28 enum fmap_compress_t compress_algo; /* Compression type */
29 uint32_t unc_length; /* Uncompressed length */
30 enum fmap_hash_t hash_algo; /* Hash algorithm */
31 const uint8_t *hash; /* Hash value */
32 int hash_size; /* Hash size */
36 * Read a flash entry from the fdt
38 * @param node Reference to node to read
39 * @param entry Place to put offset and size of this node
40 * @return 0 if ok, -ve on error
42 int ofnode_read_fmap_entry(ofnode node, struct fmap_entry *entry);
45 * ofnode_decode_region() - Decode a memory region from a node
47 * Look up a property in a node which contains a memory region address and
48 * size. Then return a pointer to this address.
50 * The property must hold one address with a length. This is only tested on
53 * @param node ofnode to examine
54 * @param prop_name name of property to find
55 * @param basep Returns base address of region
56 * @param size Returns size of region
57 * @return 0 if ok, -1 on error (property not found)
59 int ofnode_decode_region(ofnode node, const char *prop_name, fdt_addr_t *basep,
63 * ofnode_decode_memory_region()- Decode a named region within a memory bank
65 * This function handles selection of a memory region. The region is
66 * specified as an offset/size within a particular type of memory.
68 * The properties used are:
70 * <mem_type>-memory<suffix> for the name of the memory bank
71 * <mem_type>-offset<suffix> for the offset in that bank
73 * The property value must have an offset and a size. The function checks
74 * that the region is entirely within the memory bank.5
76 * @param node ofnode containing the properties (-1 for /config)
77 * @param mem_type Type of memory to use, which is a name, such as
78 * "u-boot" or "kernel".
79 * @param suffix String to append to the memory/offset
81 * @param basep Returns base of region
82 * @param sizep Returns size of region
83 * @return 0 if OK, -ive on error
85 int ofnode_decode_memory_region(ofnode config_node, const char *mem_type,
86 const char *suffix, fdt_addr_t *basep,