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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (c) 2017 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*/
#ifndef _DM_OF_EXTRA_H
#define _DM_OF_EXTRA_H
#include <dm/ofnode.h>
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:
*
* <mem_type>-memory<suffix> for the name of the memory bank
* <mem_type>-offset<suffix> 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
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