From 2d50d68a4ca1cce82899c9f0cfca17edf34bb254 Mon Sep 17 00:00:00 2001 From: Lukasz Majewski Date: Mon, 24 Aug 2015 00:21:45 +0200 Subject: dfu: tftp: update: Provide tftp support for the DFU subsystem This commit adds initial support for using tftp for downloading and upgrading firmware on the device. Signed-off-by: Lukasz Majewski Acked-by: Joe Hershberger --- drivers/dfu/dfu_tftp.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 drivers/dfu/dfu_tftp.c (limited to 'drivers/dfu/dfu_tftp.c') diff --git a/drivers/dfu/dfu_tftp.c b/drivers/dfu/dfu_tftp.c new file mode 100644 index 0000000..cd71708 --- /dev/null +++ b/drivers/dfu/dfu_tftp.c @@ -0,0 +1,65 @@ +/* + * (C) Copyright 2015 + * Lukasz Majewski + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +int dfu_tftp_write(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: %d\n", __func__, sb, strlen(sb)); + + alt_setting_num = dfu_get_alt(sb); + free(sb); + if (alt_setting_num < 0) { + error("Alt setting [%d] to write not found!", + alt_setting_num); + ret = -ENODEV; + goto done; + } + + dfu = dfu_get_entity(alt_setting_num); + if (!dfu) { + error("DFU entity for alt: %d not found!", alt_setting_num); + ret = -ENODEV; + goto done; + } + + ret = dfu_write_from_mem_addr(dfu, (void *)addr, len); + +done: + dfu_free_entities(); + + return ret; +} -- cgit v1.1