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ca341e98c8
Not all SPI flashes and controllers can do continuous transfer longer than 16 MiB, so perform the DFU read in 16 MiB chunks. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Lukasz Majewski <lukma@denx.de> Reviewed-by: Lukasz Majewski <lukma@denx.de>
232 lines
5.2 KiB
C
232 lines
5.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
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*/
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#include <common.h>
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#include <flash.h>
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#include <malloc.h>
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#include <errno.h>
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#include <div64.h>
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#include <dfu.h>
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#include <spi.h>
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#include <spi_flash.h>
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#include <jffs2/load_kernel.h>
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#include <linux/mtd/mtd.h>
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static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size)
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{
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*size = dfu->data.sf.size;
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return 0;
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}
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static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf,
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long *len)
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{
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long seglen = *len;
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int ret;
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if (seglen > (16 << 20))
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seglen = (16 << 20);
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ret = spi_flash_read(dfu->data.sf.dev, dfu->data.sf.start + offset,
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seglen, buf);
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if (!ret)
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*len = seglen;
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return ret;
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}
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static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset)
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{
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return (lldiv((start + offset), dfu->data.sf.dev->sector_size)) *
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dfu->data.sf.dev->sector_size;
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}
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static int dfu_write_medium_sf(struct dfu_entity *dfu,
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u64 offset, void *buf, long *len)
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{
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int ret;
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ret = spi_flash_erase(dfu->data.sf.dev,
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find_sector(dfu, dfu->data.sf.start, offset),
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dfu->data.sf.dev->sector_size);
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if (ret)
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return ret;
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ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start + offset,
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*len, buf);
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if (ret)
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return ret;
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return 0;
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}
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static int dfu_flush_medium_sf(struct dfu_entity *dfu)
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{
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u64 off, length;
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if (!CONFIG_IS_ENABLED(DFU_SF_PART) || !dfu->data.sf.ubi)
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return 0;
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/* in case of ubi partition, erase rest of the partition */
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off = find_sector(dfu, dfu->data.sf.start, dfu->offset);
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/* last write ended with unaligned length jump to next */
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if (off != dfu->data.sf.start + dfu->offset)
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off += dfu->data.sf.dev->sector_size;
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length = dfu->data.sf.start + dfu->data.sf.size - off;
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if (length)
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return spi_flash_erase(dfu->data.sf.dev, off, length);
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return 0;
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}
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static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu)
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{
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/*
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* Currently, Poll Timeout != 0 is only needed on nand
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* ubi partition, as sectors which are not used need
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* to be erased
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*/
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if (CONFIG_IS_ENABLED(DFU_SF_PART) && dfu->data.sf.ubi)
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return DFU_MANIFEST_POLL_TIMEOUT;
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return DFU_DEFAULT_POLL_TIMEOUT;
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}
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static void dfu_free_entity_sf(struct dfu_entity *dfu)
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{
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/*
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* In the DM case it is not necessary to free the SPI device.
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* For the non-DM case we must ensure that the the SPI device is only
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* freed once.
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*/
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if (!CONFIG_IS_ENABLED(DM_SPI_FLASH)) {
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struct spi_flash *dev = dfu->data.sf.dev;
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if (!dev)
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return;
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dfu->data.sf.dev = NULL;
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list_for_each_entry(dfu, &dfu_list, list) {
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if (dfu->data.sf.dev == dev)
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dfu->data.sf.dev = NULL;
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}
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spi_flash_free(dev);
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}
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}
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static struct spi_flash *parse_dev(char *devstr)
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{
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unsigned int bus;
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unsigned int cs;
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unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
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unsigned int mode = CONFIG_SF_DEFAULT_MODE;
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char *s, *endp;
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struct spi_flash *dev;
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s = strsep(&devstr, ":");
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if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) {
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printf("Invalid SPI bus %s\n", s);
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return NULL;
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}
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s = strsep(&devstr, ":");
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if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) {
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printf("Invalid SPI chip-select %s\n", s);
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return NULL;
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}
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s = strsep(&devstr, ":");
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if (s && *s) {
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speed = simple_strtoul(s, &endp, 0);
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if (*endp || !speed) {
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printf("Invalid SPI speed %s\n", s);
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return NULL;
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}
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}
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s = strsep(&devstr, ":");
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if (s && *s) {
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mode = simple_strtoul(s, &endp, 0);
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if (*endp || mode > 3) {
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printf("Invalid SPI mode %s\n", s);
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return NULL;
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}
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}
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dev = spi_flash_probe(bus, cs, speed, mode);
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if (!dev) {
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printf("Failed to create SPI flash at %u:%u:%u:%u\n",
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bus, cs, speed, mode);
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return NULL;
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}
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return dev;
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}
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int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s)
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{
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char *st;
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char *devstr_bkup = strdup(devstr);
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dfu->data.sf.dev = parse_dev(devstr_bkup);
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free(devstr_bkup);
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if (!dfu->data.sf.dev)
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return -ENODEV;
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dfu->dev_type = DFU_DEV_SF;
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dfu->max_buf_size = dfu->data.sf.dev->sector_size;
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st = strsep(&s, " ");
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if (!strcmp(st, "raw")) {
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dfu->layout = DFU_RAW_ADDR;
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dfu->data.sf.start = hextoul(s, &s);
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s++;
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dfu->data.sf.size = hextoul(s, &s);
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} else if (CONFIG_IS_ENABLED(DFU_SF_PART) &&
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(!strcmp(st, "part") || !strcmp(st, "partubi"))) {
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char mtd_id[32];
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struct mtd_device *mtd_dev;
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u8 part_num;
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struct part_info *pi;
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int ret, dev, part;
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dfu->layout = DFU_RAW_ADDR;
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dev = dectoul(s, &s);
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s++;
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part = dectoul(s, &s);
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sprintf(mtd_id, "%s%d,%d", "nor", dev, part - 1);
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printf("using id '%s'\n", mtd_id);
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mtdparts_init();
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ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
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if (ret != 0) {
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printf("Could not locate '%s'\n", mtd_id);
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return -1;
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}
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dfu->data.sf.start = pi->offset;
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dfu->data.sf.size = pi->size;
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if (!strcmp(st, "partubi"))
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dfu->data.sf.ubi = 1;
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} else {
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printf("%s: Memory layout (%s) not supported!\n", __func__, st);
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spi_flash_free(dfu->data.sf.dev);
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return -1;
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}
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dfu->get_medium_size = dfu_get_medium_size_sf;
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dfu->read_medium = dfu_read_medium_sf;
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dfu->write_medium = dfu_write_medium_sf;
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dfu->flush_medium = dfu_flush_medium_sf;
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dfu->poll_timeout = dfu_polltimeout_sf;
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dfu->free_entity = dfu_free_entity_sf;
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/* initial state */
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dfu->inited = 0;
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return 0;
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}
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