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f234566ef0
This function is a variant of dfu_write_by_name() and takes a DFU alt setting number for dfu configuration. It will be utilised to implement UEFI capsule management protocol for raw image in a later commit. Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Tom Rini <trini@konsulko.com>
126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2015
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* Lukasz Majewski <l.majewski@majess.pl>
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*/
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#include <common.h>
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#include <log.h>
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#include <malloc.h>
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#include <errno.h>
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#include <dfu.h>
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/**
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* dfu_write_by_name() - write data to DFU medium
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* @dfu_entity_name: Name of DFU entity to write
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* @addr: Address of data buffer to write
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* @len: Number of bytes
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* @interface: Destination DFU medium (e.g. "mmc")
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* @devstring: Instance number of destination DFU medium (e.g. "1")
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*
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* This function is storing data received on DFU supported medium which
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* is specified by @dfu_entity_name.
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*
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* Return: 0 - on success, error code - otherwise
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*/
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int dfu_write_by_name(char *dfu_entity_name, void *addr,
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unsigned int len, char *interface, char *devstring)
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{
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char *s, *sb;
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int alt_setting_num, ret;
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struct dfu_entity *dfu;
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debug("%s: name: %s addr: 0x%p len: %d device: %s:%s\n", __func__,
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dfu_entity_name, addr, len, interface, devstring);
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ret = dfu_init_env_entities(interface, devstring);
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if (ret)
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goto done;
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/*
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* We need to copy name pointed by *dfu_entity_name since this text
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* is the integral part of the FDT image.
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* Any implicit modification (i.e. done by strsep()) will corrupt
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* the FDT image and prevent other images to be stored.
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*/
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s = strdup(dfu_entity_name);
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sb = s;
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if (!s) {
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ret = -ENOMEM;
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goto done;
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}
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strsep(&s, "@");
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debug("%s: image name: %s strlen: %zd\n", __func__, sb, strlen(sb));
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alt_setting_num = dfu_get_alt(sb);
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free(sb);
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if (alt_setting_num < 0) {
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pr_err("Alt setting [%d] to write not found!",
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alt_setting_num);
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ret = -ENODEV;
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goto done;
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}
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dfu = dfu_get_entity(alt_setting_num);
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if (!dfu) {
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pr_err("DFU entity for alt: %d not found!", alt_setting_num);
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ret = -ENODEV;
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goto done;
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}
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ret = dfu_write_from_mem_addr(dfu, (void *)addr, len);
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done:
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dfu_free_entities();
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return ret;
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}
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/**
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* dfu_write_by_alt() - write data to DFU medium
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* @dfu_alt_num: DFU alt setting number
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* @addr: Address of data buffer to write
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* @len: Number of bytes
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* @interface: Destination DFU medium (e.g. "mmc")
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* @devstring: Instance number of destination DFU medium (e.g. "1")
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*
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* This function is storing data received on DFU supported medium which
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* is specified by @dfu_alt_name.
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*
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* Return: 0 - on success, error code - otherwise
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*/
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int dfu_write_by_alt(int dfu_alt_num, void *addr, unsigned int len,
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char *interface, char *devstring)
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{
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struct dfu_entity *dfu;
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int ret;
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debug("%s: alt: %d addr: 0x%p len: %d device: %s:%s\n", __func__,
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dfu_alt_num, addr, len, interface, devstring);
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ret = dfu_init_env_entities(interface, devstring);
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if (ret)
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goto done;
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if (dfu_alt_num < 0) {
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pr_err("Invalid alt number: %d", dfu_alt_num);
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ret = -ENODEV;
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goto done;
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}
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dfu = dfu_get_entity(dfu_alt_num);
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if (!dfu) {
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pr_err("DFU entity for alt: %d not found!", dfu_alt_num);
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ret = -ENODEV;
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goto done;
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}
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ret = dfu_write_from_mem_addr(dfu, (void *)(uintptr_t)addr, len);
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done:
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dfu_free_entities();
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return ret;
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}
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