1 // SPDX-License-Identifier: GPL-2.0+
4 * Lukasz Majewski <l.majewski@majess.pl>
14 * dfu_write_by_name() - write data to DFU medium
15 * @dfu_entity_name: Name of DFU entity to write
16 * @addr: Address of data buffer to write
17 * @len: Number of bytes
18 * @interface: Destination DFU medium (e.g. "mmc")
19 * @devstring: Instance number of destination DFU medium (e.g. "1")
21 * This function is storing data received on DFU supported medium which
22 * is specified by @dfu_entity_name.
24 * Return: 0 - on success, error code - otherwise
26 int dfu_write_by_name(char *dfu_entity_name, void *addr,
27 unsigned int len, char *interface, char *devstring)
30 int alt_setting_num, ret;
31 struct dfu_entity *dfu;
33 debug("%s: name: %s addr: 0x%p len: %d device: %s:%s\n", __func__,
34 dfu_entity_name, addr, len, interface, devstring);
36 ret = dfu_init_env_entities(interface, devstring);
41 * We need to copy name pointed by *dfu_entity_name since this text
42 * is the integral part of the FDT image.
43 * Any implicit modification (i.e. done by strsep()) will corrupt
44 * the FDT image and prevent other images to be stored.
46 s = strdup(dfu_entity_name);
54 debug("%s: image name: %s strlen: %zd\n", __func__, sb, strlen(sb));
56 alt_setting_num = dfu_get_alt(sb);
58 if (alt_setting_num < 0) {
59 pr_err("Alt setting [%d] to write not found!",
65 dfu = dfu_get_entity(alt_setting_num);
67 pr_err("DFU entity for alt: %d not found!", alt_setting_num);
72 ret = dfu_write_from_mem_addr(dfu, (void *)addr, len);
81 * dfu_write_by_alt() - write data to DFU medium
82 * @dfu_alt_num: DFU alt setting number
83 * @addr: Address of data buffer to write
84 * @len: Number of bytes
85 * @interface: Destination DFU medium (e.g. "mmc")
86 * @devstring: Instance number of destination DFU medium (e.g. "1")
88 * This function is storing data received on DFU supported medium which
89 * is specified by @dfu_alt_name.
91 * Return: 0 - on success, error code - otherwise
93 int dfu_write_by_alt(int dfu_alt_num, void *addr, unsigned int len,
94 char *interface, char *devstring)
96 struct dfu_entity *dfu;
99 debug("%s: alt: %d addr: 0x%p len: %d device: %s:%s\n", __func__,
100 dfu_alt_num, addr, len, interface, devstring);
102 ret = dfu_init_env_entities(interface, devstring);
106 if (dfu_alt_num < 0) {
107 pr_err("Invalid alt number: %d", dfu_alt_num);
112 dfu = dfu_get_entity(dfu_alt_num);
114 pr_err("DFU entity for alt: %d not found!", dfu_alt_num);
119 ret = dfu_write_from_mem_addr(dfu, (void *)(uintptr_t)addr, len);