linux/drivers/nfc/s3fwrn5/firmware.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * NCI based driver for Samsung S3FWRN5 NFC chip
 *
 * Copyright (C) 2015 Samsung Electrnoics
 * Robert Baldyga <[email protected]>
 */

#include <linux/completion.h>
#include <linux/firmware.h>
#include <crypto/hash.h>
#include <crypto/sha1.h>

#include "s3fwrn5.h"
#include "firmware.h"

struct s3fwrn5_fw_version { … };

static int s3fwrn5_fw_send_msg(struct s3fwrn5_fw_info *fw_info,
	struct sk_buff *msg, struct sk_buff **rsp)
{ … }

static int s3fwrn5_fw_prep_msg(struct s3fwrn5_fw_info *fw_info,
	struct sk_buff **msg, u8 type, u8 code, const void *data, u16 len)
{ … }

static int s3fwrn5_fw_get_bootinfo(struct s3fwrn5_fw_info *fw_info,
	struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo)
{ … }

static int s3fwrn5_fw_enter_update_mode(struct s3fwrn5_fw_info *fw_info,
	const void *hash_data, u16 hash_size,
	const void *sig_data, u16 sig_size)
{ … }

static int s3fwrn5_fw_update_sector(struct s3fwrn5_fw_info *fw_info,
	u32 base_addr, const void *data)
{ … }

static int s3fwrn5_fw_complete_update_mode(struct s3fwrn5_fw_info *fw_info)
{ … }

/*
 * Firmware header structure:
 *
 * 0x00 - 0x0B : Date and time string (w/o NUL termination)
 * 0x10 - 0x13 : Firmware version
 * 0x14 - 0x17 : Signature address
 * 0x18 - 0x1B : Signature size
 * 0x1C - 0x1F : Firmware image address
 * 0x20 - 0x23 : Firmware sectors count
 * 0x24 - 0x27 : Custom signature address
 * 0x28 - 0x2B : Custom signature size
 */

#define S3FWRN5_FW_IMAGE_HEADER_SIZE …

int s3fwrn5_fw_request_firmware(struct s3fwrn5_fw_info *fw_info)
{ … }

static void s3fwrn5_fw_release_firmware(struct s3fwrn5_fw_info *fw_info)
{ … }

static int s3fwrn5_fw_get_base_addr(
	struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo, u32 *base_addr)
{ … }

static inline bool
s3fwrn5_fw_is_custom(const struct s3fwrn5_fw_cmd_get_bootinfo_rsp *bootinfo)
{ … }

int s3fwrn5_fw_setup(struct s3fwrn5_fw_info *fw_info)
{ … }

bool s3fwrn5_fw_check_version(const struct s3fwrn5_fw_info *fw_info, u32 version)
{ … }

int s3fwrn5_fw_download(struct s3fwrn5_fw_info *fw_info)
{ … }

void s3fwrn5_fw_init(struct s3fwrn5_fw_info *fw_info, const char *fw_name)
{ … }

void s3fwrn5_fw_cleanup(struct s3fwrn5_fw_info *fw_info)
{ … }

int s3fwrn5_fw_recv_frame(struct nci_dev *ndev, struct sk_buff *skb)
{ … }