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/* SPDX-License-Identifier: Intel */
/*
* Access to binman information at runtime
*
* Copyright 2019 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#ifndef _BINMAN_H_
#define _BINMAN_H_
#include <dm/ofnode.h>
/**
*struct binman_entry - information about a binman entry
*
* @image_pos: Position of entry in the image
* @size: Size of entry
*/
struct binman_entry {
u32 image_pos;
u32 size;
};
/**
* binman_entry_map() - Look up the address of an entry in memory
*
* @parent: Parent binman node
* @name: Name of entry
* @bufp: Returns a pointer to the entry
* @sizep: Returns the size of the entry
* Return: 0 on success, -EPERM if the ROM offset is not set, -ENOENT if the
* entry cannot be found, other error code other error
*/
int binman_entry_map(ofnode parent, const char *name, void **bufp, int *sizep);
/**
* binman_set_rom_offset() - Set the ROM memory-map offset
*
* @rom_offset: Offset from an image_pos to the memory-mapped address. This
* tells binman that ROM image_pos x can be addressed at rom_offset + x
*/
void binman_set_rom_offset(int rom_offset);
/**
* binman_get_rom_offset() - Get the ROM memory-map offset
*
* @returns offset from an image_pos to the memory-mapped address
*/
int binman_get_rom_offset(void);
/**
* binman_entry_find() - Find a binman symbol
*
* This searches the binman information in the device tree for a symbol of the
* given name
*
* @name: Path to entry to examine (e.g. "/read-only/u-boot")
* @entry: Returns information about the entry
* Return: 0 if OK, -ENOENT if the path is not found, other -ve value if the
* binman information is invalid (missing image-pos or size)
*/
int binman_entry_find(const char *name, struct binman_entry *entry);
/**
* binman_section_find_node() - Find a binman node
*
* @name: Name of node to look for
* Return: Node that was found, ofnode_null() if not found
*/
ofnode binman_section_find_node(const char *name);
/**
* binman_select_subnode() - Select a subnode to use to find entries
*
* Normally binman selects the top-level node for future entry requests, such as
* binman_entry_find(). This function allows a subnode to be chosen instead.
*
* @name: Name of subnode, typically a section. This must be in the top-level
* binman node
* Return: 0 if OK, -EINVAL if there is no /binman node, -ECHILD if multiple
* images are being used but the first image is not available, -ENOENT if
* the requested subnode cannot be found
*/
int binman_select_subnode(const char *name);
/**
* binman_init() - Set up the binman symbol information
*
* This locates the binary symbol information in the device tree ready for use
*
* Return: 0 if OK, -ENOMEM if out of memory, -EINVAL if there is no binman node
*/
int binman_init(void);
#endif
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