/* SPDX-License-Identifier: GPL-2.0+ */ /* * Copyright (c) 2017 Google, Inc * Written by Simon Glass */ #ifndef _DM_OF_EXTRA_H #define _DM_OF_EXTRA_H #include enum fmap_compress_t { FMAP_COMPRESS_NONE, FMAP_COMPRESS_LZ4, }; enum fmap_hash_t { FMAP_HASH_NONE, FMAP_HASH_SHA1, FMAP_HASH_SHA256, }; /* A flash map entry, containing an offset and length */ struct fmap_entry { uint32_t offset; uint32_t length; uint32_t used; /* Number of bytes used in region */ enum fmap_compress_t compress_algo; /* Compression type */ uint32_t unc_length; /* Uncompressed length */ enum fmap_hash_t hash_algo; /* Hash algorithm */ const uint8_t *hash; /* Hash value */ int hash_size; /* Hash size */ }; /** * Read a flash entry from the fdt * * @param node Reference to node to read * @param entry Place to put offset and size of this node * @return 0 if ok, -ve on error */ int ofnode_read_fmap_entry(ofnode node, struct fmap_entry *entry); /** * ofnode_decode_region() - Decode a memory region from a node * * Look up a property in a node which contains a memory region address and * size. Then return a pointer to this address. * * The property must hold one address with a length. This is only tested on * 32-bit machines. * * @param node ofnode to examine * @param prop_name name of property to find * @param basep Returns base address of region * @param size Returns size of region * @return 0 if ok, -1 on error (property not found) */ int ofnode_decode_region(ofnode node, const char *prop_name, fdt_addr_t *basep, fdt_size_t *sizep); /** * ofnode_decode_memory_region()- Decode a named region within a memory bank * * This function handles selection of a memory region. The region is * specified as an offset/size within a particular type of memory. * * The properties used are: * * -memory for the name of the memory bank * -offset for the offset in that bank * * The property value must have an offset and a size. The function checks * that the region is entirely within the memory bank.5 * * @param node ofnode containing the properties (-1 for /config) * @param mem_type Type of memory to use, which is a name, such as * "u-boot" or "kernel". * @param suffix String to append to the memory/offset * property names * @param basep Returns base of region * @param sizep Returns size of region * @return 0 if OK, -ive on error */ int ofnode_decode_memory_region(ofnode config_node, const char *mem_type, const char *suffix, fdt_addr_t *basep, fdt_size_t *sizep); #endif