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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015
* Lukasz Majewski <l.majewski@majess.pl>
*/
#include <common.h>
#include <log.h>
#include <malloc.h>
#include <errno.h>
#include <dfu.h>
/**
* dfu_write_by_name() - write data to DFU medium
* @dfu_entity_name: Name of DFU entity to write
* @addr: Address of data buffer to write
* @len: Number of bytes
* @interface: Destination DFU medium (e.g. "mmc")
* @devstring: Instance number of destination DFU medium (e.g. "1")
*
* This function is storing data received on DFU supported medium which
* is specified by @dfu_entity_name.
*
* Return: 0 - on success, error code - otherwise
*/
int dfu_write_by_name(char *dfu_entity_name, unsigned int addr,
unsigned int len, char *interface, char *devstring)
{
char *s, *sb;
int alt_setting_num, ret;
struct dfu_entity *dfu;
debug("%s: name: %s addr: 0x%x len: %d device: %s:%s\n", __func__,
dfu_entity_name, addr, len, interface, devstring);
ret = dfu_init_env_entities(interface, devstring);
if (ret)
goto done;
/*
* We need to copy name pointed by *dfu_entity_name since this text
* is the integral part of the FDT image.
* Any implicit modification (i.e. done by strsep()) will corrupt
* the FDT image and prevent other images to be stored.
*/
s = strdup(dfu_entity_name);
sb = s;
if (!s) {
ret = -ENOMEM;
goto done;
}
strsep(&s, "@");
debug("%s: image name: %s strlen: %zd\n", __func__, sb, strlen(sb));
alt_setting_num = dfu_get_alt(sb);
free(sb);
if (alt_setting_num < 0) {
pr_err("Alt setting [%d] to write not found!",
alt_setting_num);
ret = -ENODEV;
goto done;
}
dfu = dfu_get_entity(alt_setting_num);
if (!dfu) {
pr_err("DFU entity for alt: %d not found!", alt_setting_num);
ret = -ENODEV;
goto done;
}
ret = dfu_write_from_mem_addr(dfu, (void *)(uintptr_t)addr, len);
done:
dfu_free_entities();
return ret;
}
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