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/*
* Copyright 2013 Google Inc.
* Copyright 2018-present Facebook, Inc.
*
* Taken from depthcharge: src/boot/fit.h
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but without any warranty; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __LIB_FIT_H__
#define __LIB_FIT_H__
#include <stddef.h>
#include <stdint.h>
#include <device_tree.h>
#include <list.h>
#include <program_loading.h>
struct fit_image_node {
const char *name;
void *data;
uint32_t size;
int compression;
struct list_node list_node;
};
struct fit_config_node {
const char *name;
struct fit_image_node *kernel;
struct fit_image_node *fdt;
struct list_node overlays;
struct fit_image_node *ramdisk;
struct fdt_property compat;
int compat_rank;
int compat_pos;
const char *compat_string;
struct list_node list_node;
};
struct fit_overlay_chain {
struct fit_image_node *overlay;
struct list_node list_node;
};
/*
* Updates the cmdline in the devicetree.
*/
void fit_update_chosen(struct device_tree *tree, const char *cmd_line);
/*
* Add a compat string to the list of supported board ids.
* Has to be called before fit_load().
* The most common use-case would be to implement it on board level.
* Strings that were added first have a higher priority on finding a match.
*/
void fit_add_compat_string(const char *str);
/*
* Updates the memory section in the devicetree.
*/
void fit_update_memory(struct device_tree *tree);
/*
* Do architecture specific payload placements and fixups.
* Set entrypoint and first argument (if any).
* @param payload The payload, to set the entry point
* @param config The extracted FIT config
* @param kernel out-argument where to place the kernel
* @param fdt out-argument where to place the devicetree
* @param initrd out-argument where to place the initrd (optional)
* @return True if all config nodes could be placed, the corresponding
* regions have been updated and the entry point has been set.
* False on error.
*/
bool fit_payload_arch(struct prog *payload, struct fit_config_node *config,
struct region *kernel,
struct region *fdt,
struct region *initrd);
/*
* Unpack a FIT image into memory, choosing the right configuration through the
* compatible string set by fit_add_compat() and return the selected config
* node.
*/
struct fit_config_node *fit_load(void *fit);
void fit_add_ramdisk(struct device_tree *tree, void *ramdisk_addr,
size_t ramdisk_size);
#endif /* __LIB_FIT_H__ */
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