qemu_fwcfg.h

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/*
 * Copyright (c) 2026 Maximilian Zimmermann
 *
 * SPDX-License-Identifier: Apache-2.0
 */

 
#ifndef ZEPHYR_INCLUDE_DRIVERS_FIRMWARE_QEMU_FWCFG_H_
#define ZEPHYR_INCLUDE_DRIVERS_FIRMWARE_QEMU_FWCFG_H_

 
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
 
#include <zephyr/device.h>
#include <zephyr/sys/util.h>

#define FW_CFG_SIGNATURE 0x0000
#define FW_CFG_ID        0x0001
#define FW_CFG_FILE_DIR  0x0019

#define FW_CFG_ID_F_TRADITIONAL BIT(0)
#define FW_CFG_ID_F_DMA         BIT(1)

int qemu_fwcfg_read_item(const struct device *dev, uint16_t key, void *buf, size_t len);

int qemu_fwcfg_write_item(const struct device *dev, uint16_t key, const void *buf, size_t len);

int qemu_fwcfg_get_features(const struct device *dev, uint32_t *features);

int qemu_fwcfg_find_file(const struct device *dev, const char *file, uint16_t *select,
                         uint32_t *size);

bool qemu_fwcfg_dma_supported(const struct device *dev);

 
#endif /* ZEPHYR_INCLUDE_DRIVERS_FIRMWARE_QEMU_FWCFG_H_ */