[PATCH v4 1/4] dfu: add scsi backend
Mattijs Korpershoek
mkorpershoek at baylibre.com
Tue Oct 15 11:32:11 CEST 2024
Hi Caleb,
Thank you for the patch.
On sam., oct. 12, 2024 at 15:57, Caleb Connolly <caleb.connolly at linaro.org> wrote:
> This is extremely similar to the MMC backend, but there are some notable
> differences.
>
> Works with a DFU string like
>
> scsi 4=u-boot-bin part 11
>
> Where "4" is the SCSI dev number (sequential LUN across all SCSI devices)
> and "11" is the partition number.
>
> Signed-off-by: Caleb Connolly <caleb.connolly at linaro.org>
> ---
> doc/usage/dfu.rst | 32 ++++
> drivers/dfu/Kconfig | 7 +
> drivers/dfu/Makefile | 1 +
> drivers/dfu/dfu.c | 5 +-
> drivers/dfu/dfu_scsi.c | 435 +++++++++++++++++++++++++++++++++++++++++++++++++
> include/dfu.h | 27 +++
> 6 files changed, 506 insertions(+), 1 deletion(-)
>
> diff --git a/doc/usage/dfu.rst b/doc/usage/dfu.rst
> index 8cc09c308d82..f497dcf137a4 100644
> --- a/doc/usage/dfu.rst
> +++ b/doc/usage/dfu.rst
> @@ -21,8 +21,9 @@ U-Boot implements this DFU capability (CONFIG_DFU) with the command dfu
>
> Today the supported DFU backends are:
>
> - MMC (RAW or FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT)
> +- SCSI (UFS, RAW partition, FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT)
> - NAND
> - RAM
> - SF (serial flash)
> - MTD (all MTD device: NAND, SPI-NOR, SPI-NAND,...)
> @@ -166,8 +167,38 @@ mmc
>
> Please note that this means the user will be able to execute any
> arbitrary commands just like in the u-boot's shell.
Can we please add CONFIG_DFU_SCSI in "Configuration Options" section at
the beginning of this document?
See:
https://docs.u-boot.org/en/latest/usage/dfu.html#configuration-options
Note: I requested that on v3 here:
https://lore.kernel.org/all/87zfs11999.fsf@baylibre.com/
And on v2: here:
https://lore.kernel.org/all/87o7a94pe1.fsf@baylibre.com/
With above addressed, feel free to add:
Reviewed-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>
And please take this through your tree:
Acked-by: Mattijs Korpershoek <mkorpershoek at baylibre.com>
>
> +scsi
> + for UFS storage::
> +
> + dfu 0 scsi <dev>
> +
> + each element in *dfu_alt_info* being
> +
> + * <name> raw <offset> <size> raw access to SCSI LUN
> + * <name> part <part_id> raw access to partition
> + * <name> fat <part_id> file in FAT partition
> + * <name> ext4 <part_id> file in EXT4 partition
> + * <name> skip 0 0 ignore flashed data
> + * <name> script 0 0 execute commands in shell
> +
> + with
> +
> + size
> + is the size of the access area (hexadecimal without "0x")
> + or 0 which means whole device
> + partid
> + is the GPT or DOS partition index.
> + dev
> + is the SCSI LU (Logical Unit) index (decimal only)
> +
> + A value of environment variable *dfu_alt_info* for UFS could be::
> +
> + u-boot part 4;bl2 raw 0x1e 0x1d
> +
> + See mmc section above for details on the skip and script types.
> +
> nand
> raw slc nand device::
>
> dfu 0 nand <dev>
> @@ -277,8 +308,9 @@ alternate list separated by '&' with the same format for each <alt>::
>
> mmc <dev>=<alt1>;....;<altN>
> nand <dev>=<alt1>;....;<altN>
> ram <dev>=<alt1>;....;<altN>
> + scsi <dev>=<alt1>;....;<altN>
> sf <dev>=<alt1>;....;<altN>
> mtd <dev>=<alt1>;....;<altN>
> virt <dev>=<alt1>;....;<altN>
>
> diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig
> index aadd7e8cf7f0..3f1a8c4617cd 100644
> --- a/drivers/dfu/Kconfig
> +++ b/drivers/dfu/Kconfig
> @@ -87,8 +87,15 @@ config DFU_VIRT
> This option enables using DFU to read and write to VIRTUAL device
> used at board level to manage specific behavior
> (OTP update for example).
>
> +config DFU_SCSI
> + bool "SCSI flash back end for DFU"
> + help
> + This option enables using DFU to read and write to SCSI devices
> + used at board level to manage specific behavior
> + (OTP update for example).
> +
> config SET_DFU_ALT_INFO
> bool "Dynamic set of DFU alternate information"
> help
> This option allows to call the function set_dfu_alt_info to
> diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile
> index dfbf64da6677..3b3ba0994b3a 100644
> --- a/drivers/dfu/Makefile
> +++ b/drivers/dfu/Makefile
> @@ -10,4 +10,5 @@ obj-$(CONFIG_$(SPL_)DFU_NAND) += dfu_nand.o
> obj-$(CONFIG_$(SPL_)DFU_RAM) += dfu_ram.o
> obj-$(CONFIG_$(SPL_)DFU_SF) += dfu_sf.o
> obj-$(CONFIG_$(SPL_)DFU_WRITE_ALT) += dfu_alt.o
> obj-$(CONFIG_$(SPL_)DFU_VIRT) += dfu_virt.o
> +obj-$(CONFIG_$(SPL_)DFU_SCSI) += dfu_scsi.o
> diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
> index 7a4d7ba2a7ff..756569217bbb 100644
> --- a/drivers/dfu/dfu.c
> +++ b/drivers/dfu/dfu.c
> @@ -563,8 +563,11 @@ static int dfu_fill_entity(struct dfu_entity *dfu, char *s, int alt,
> return -1;
> } else if (strcmp(interface, "virt") == 0) {
> if (dfu_fill_entity_virt(dfu, devstr, argv, argc))
> return -1;
> + } else if (strcmp(interface, "scsi") == 0) {
> + if (dfu_fill_entity_scsi(dfu, devstr, argv, argc))
> + return -1;
> } else {
> printf("%s: Device %s not (yet) supported!\n",
> __func__, interface);
> return -1;
> @@ -659,9 +662,9 @@ int dfu_config_entities(char *env, char *interface, char *devstr)
>
> const char *dfu_get_dev_type(enum dfu_device_type t)
> {
> const char *const dev_t[] = {NULL, "eMMC", "OneNAND", "NAND", "RAM",
> - "SF", "MTD", "VIRT"};
> + "SF", "MTD", "VIRT", "SCSI"};
> return dev_t[t];
> }
>
> const char *dfu_get_layout(enum dfu_layout l)
> diff --git a/drivers/dfu/dfu_scsi.c b/drivers/dfu/dfu_scsi.c
> new file mode 100644
> index 000000000000..9f95194784c1
> --- /dev/null
> +++ b/drivers/dfu/dfu_scsi.c
> @@ -0,0 +1,435 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * DFU SCSI backend (based on MMC backend).
> + *
> + * Copyright (C) 2012 Samsung Electronics
> + * author: Lukasz Majewski <l.majewski at samsung.com>
> + * Copyright (C) 2024 Linaro Ltd.
> + */
> +
> +#include <log.h>
> +#include <malloc.h>
> +#include <errno.h>
> +#include <div64.h>
> +#include <dfu.h>
> +#include <ext4fs.h>
> +#include <fat.h>
> +#include <scsi.h>
> +#include <part.h>
> +#include <command.h>
> +#include <linux/printk.h>
> +
> +static unsigned char *dfu_file_buf;
> +static u64 dfu_file_buf_len;
> +static u64 dfu_file_buf_offset;
> +
> +#define scsi_get_blk_desc(dev) ((struct blk_desc *)dev_get_uclass_plat(dev))
> +
> +#define find_scsi_device(dev_num, scsi) blk_get_device(UCLASS_SCSI, dev_num, scsi)
> +
> +static int scsi_block_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, long *len)
> +{
> + struct udevice *scsi;
> + u32 blk_start, blk_count, n = 0;
> + int ret;
> +
> + ret = find_scsi_device(dfu->data.scsi.lun, &scsi);
> + if (ret < 0) {
> + pr_err("Device scsi %d - not found!", dfu->data.scsi.lun);
> + return -ENODEV;
> + }
> +
> + /*
> + * We must ensure that we work in lba_blk_size chunks, so ALIGN
> + * this value.
> + */
> + *len = ALIGN(*len, dfu->data.scsi.lba_blk_size);
> +
> + blk_start = dfu->data.scsi.lba_start + (u32)lldiv(offset, dfu->data.scsi.lba_blk_size);
> + blk_count = *len / dfu->data.scsi.lba_blk_size;
> + if (blk_start + blk_count > dfu->data.scsi.lba_start + dfu->data.scsi.lba_size) {
> + puts("Request would exceed designated area!\n");
> + return -EINVAL;
> + }
> +
> + debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__,
> + op == DFU_OP_READ ? "scsi READ" : "scsi WRITE", dfu->data.scsi.lun, blk_start,
> + blk_count, buf);
> + switch (op) {
> + case DFU_OP_READ:
> + n = blk_dread(scsi_get_blk_desc(scsi), blk_start, blk_count, buf);
> + break;
> + case DFU_OP_WRITE:
> + n = blk_dwrite(scsi_get_blk_desc(scsi), blk_start, blk_count, buf);
> + break;
> + default:
> + pr_err("Operation not supported\n");
> + }
> +
> + if (n != blk_count) {
> + pr_err("scsi block operation failed");
> + return -EIO;
> + }
> +
> + return 0;
> +}
> +
> +static int scsi_file_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, u64 *len)
> +{
> + char dev_part_str[8];
> + int ret;
> + int fstype;
> + loff_t size = 0;
> +
> + switch (dfu->layout) {
> + case DFU_FS_FAT:
> + fstype = FS_TYPE_FAT;
> + break;
> + case DFU_FS_EXT4:
> + fstype = FS_TYPE_EXT;
> + break;
> + case DFU_SKIP:
> + return 0;
> + default:
> + printf("%s: Layout (%s) not (yet) supported!\n", __func__,
> + dfu_get_layout(dfu->layout));
> + return -1;
> + }
> +
> + snprintf(dev_part_str, sizeof(dev_part_str), "%d:%d", dfu->data.scsi.dev,
> + dfu->data.scsi.part);
> +
> + ret = fs_set_blk_dev("scsi", dev_part_str, fstype);
> + if (ret) {
> + puts("dfu: fs_set_blk_dev error!\n");
> + return ret;
> + }
> +
> + switch (op) {
> + case DFU_OP_READ:
> + ret = fs_read(dfu->name, (size_t)buf, offset, *len, &size);
> + if (ret) {
> + puts("dfu: fs_read error!\n");
> + return ret;
> + }
> + *len = size;
> + break;
> + case DFU_OP_WRITE:
> + ret = fs_write(dfu->name, (size_t)buf, offset, *len, &size);
> + if (ret) {
> + puts("dfu: fs_write error!\n");
> + return ret;
> + }
> + break;
> + case DFU_OP_SIZE:
> + ret = fs_size(dfu->name, &size);
> + if (ret) {
> + puts("dfu: fs_size error!\n");
> + return ret;
> + }
> + *len = size;
> + break;
> + default:
> + return -1;
> + }
> +
> + return ret;
> +}
> +
> +static int scsi_file_buf_write(struct dfu_entity *dfu, u64 offset, void *buf, long *len)
> +{
> + int ret = 0;
> +
> + if (offset == 0) {
> + dfu_file_buf_len = 0;
> + dfu_file_buf_offset = 0;
> + }
> +
> + /* Add to the current buffer. */
> + if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE)
> + *len = CONFIG_SYS_DFU_MAX_FILE_SIZE - dfu_file_buf_len;
> + memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len);
> + dfu_file_buf_len += *len;
> +
> + if (dfu_file_buf_len == CONFIG_SYS_DFU_MAX_FILE_SIZE) {
> + ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf,
> + &dfu_file_buf_len);
> + dfu_file_buf_offset += dfu_file_buf_len;
> + dfu_file_buf_len = 0;
> + }
> +
> + return ret;
> +}
> +
> +static int scsi_file_buf_write_finish(struct dfu_entity *dfu)
> +{
> + int ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf,
> + &dfu_file_buf_len);
> +
> + /* Now that we're done */
> + dfu_file_buf_len = 0;
> + dfu_file_buf_offset = 0;
> +
> + return ret;
> +}
> +
> +int dfu_write_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len)
> +{
> + int ret = -1;
> +
> + switch (dfu->layout) {
> + case DFU_RAW_ADDR:
> + ret = scsi_block_op(DFU_OP_WRITE, dfu, offset, buf, len);
> + break;
> + case DFU_FS_FAT:
> + case DFU_FS_EXT4:
> + ret = scsi_file_buf_write(dfu, offset, buf, len);
> + break;
> + case DFU_SCRIPT:
> + ret = run_command_list(buf, *len, 0);
> + break;
> + case DFU_SKIP:
> + ret = 0;
> + break;
> + default:
> + printf("%s: Layout (%s) not (yet) supported!\n", __func__,
> + dfu_get_layout(dfu->layout));
> + }
> +
> + return ret;
> +}
> +
> +int dfu_flush_medium_scsi(struct dfu_entity *dfu)
> +{
> + int ret = 0;
> +
> + switch (dfu->layout) {
> + case DFU_FS_FAT:
> + case DFU_FS_EXT4:
> + ret = scsi_file_buf_write_finish(dfu);
> + break;
> + case DFU_SCRIPT:
> + /* script may have changed the dfu_alt_info */
> + dfu_reinit_needed = true;
> + break;
> + case DFU_RAW_ADDR:
> + case DFU_SKIP:
> + break;
> + default:
> + printf("%s: Layout (%s) not (yet) supported!\n", __func__,
> + dfu_get_layout(dfu->layout));
> + }
> +
> + return ret;
> +}
> +
> +int dfu_get_medium_size_scsi(struct dfu_entity *dfu, u64 *size)
> +{
> + int ret;
> +
> + switch (dfu->layout) {
> + case DFU_RAW_ADDR:
> + *size = dfu->data.scsi.lba_size * dfu->data.scsi.lba_blk_size;
> + return 0;
> + case DFU_FS_FAT:
> + case DFU_FS_EXT4:
> + ret = scsi_file_op(DFU_OP_SIZE, dfu, 0, NULL, size);
> + if (ret < 0)
> + return ret;
> + return 0;
> + case DFU_SCRIPT:
> + case DFU_SKIP:
> + return 0;
> + default:
> + printf("%s: Layout (%s) not (yet) supported!\n", __func__,
> + dfu_get_layout(dfu->layout));
> + return -1;
> + }
> +}
> +
> +static int scsi_file_buf_read(struct dfu_entity *dfu, u64 offset, void *buf, long *len)
> +{
> + int ret;
> +
> + if (offset == 0 || offset >= dfu_file_buf_offset + dfu_file_buf_len ||
> + offset + *len < dfu_file_buf_offset) {
> + u64 file_len = CONFIG_SYS_DFU_MAX_FILE_SIZE;
> +
> + ret = scsi_file_op(DFU_OP_READ, dfu, offset, dfu_file_buf, &file_len);
> + if (ret < 0)
> + return ret;
> + dfu_file_buf_len = file_len;
> + dfu_file_buf_offset = offset;
> + }
> + if (offset + *len > dfu_file_buf_offset + dfu_file_buf_len)
> + return -EINVAL;
> +
> + /* Add to the current buffer. */
> + memcpy(buf, dfu_file_buf + offset - dfu_file_buf_offset, *len);
> +
> + return 0;
> +}
> +
> +int dfu_read_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len)
> +{
> + int ret = -1;
> +
> + switch (dfu->layout) {
> + case DFU_RAW_ADDR:
> + ret = scsi_block_op(DFU_OP_READ, dfu, offset, buf, len);
> + break;
> + case DFU_FS_FAT:
> + case DFU_FS_EXT4:
> + ret = scsi_file_buf_read(dfu, offset, buf, len);
> + break;
> + default:
> + printf("%s: Layout (%s) not (yet) supported!\n", __func__,
> + dfu_get_layout(dfu->layout));
> + }
> +
> + return ret;
> +}
> +
> +void dfu_free_entity_scsi(struct dfu_entity *dfu)
> +{
> + if (dfu_file_buf) {
> + free(dfu_file_buf);
> + dfu_file_buf = NULL;
> + }
> +}
> +
> +/*
> + * @param s Parameter string containing space-separated arguments:
> + * 1st:
> + * raw (raw read/write)
> + * fat (files)
> + * ext4 (^)
> + * part (partition image)
> + * 2nd and 3rd:
> + * lba_start and lba_size, for raw write
> + * scsi_dev and scsi_part, for filesystems and part
> + */
> +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, char **argv, int argc)
> +{
> + const char *entity_type;
> + ssize_t second_arg;
> + ssize_t third_arg = -1;
> + struct udevice *scsi;
> + struct blk_desc *blk_dev;
> + int ret;
> + char *s;
> +
> + if (argc < 2) {
> + pr_err("Need at least one argument\n");
> + return -EINVAL;
> + }
> +
> + dfu->data.scsi.lun = dectoul(devstr, &s);
> + if (*s)
> + return -EINVAL;
> +
> + entity_type = argv[0];
> + /*
> + * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
> + * with default 10.
> + */
> + second_arg = simple_strtol(argv[1], &s, 0);
> + if (*s)
> + return -EINVAL;
> + if (argc >= 3) {
> + third_arg = simple_strtoul(argv[2], &s, 0);
> + if (*s)
> + return -EINVAL;
> + }
> +
> + if (scsi_scan(false)) {
> + pr_err("Couldn't init scsi device.\n");
> + return -ENODEV;
> + }
> +
> + ret = find_scsi_device(dfu->data.scsi.lun, &scsi);
> + if (ret < 0) {
> + pr_err("Couldn't find scsi device no. %d.\n", dfu->data.scsi.lun);
> + return -ENODEV;
> + }
> +
> + blk_dev = scsi_get_blk_desc(scsi);
> + if (!blk_dev) {
> + pr_err("Couldn't get block device for scsi device no. %d.\n", dfu->data.scsi.lun);
> + return -ENODEV;
> + }
> +
> + /* if it's NOT a raw write */
> + if (strcmp(entity_type, "raw")) {
> + dfu->data.scsi.dev = (second_arg != -1) ? second_arg : dfu->data.scsi.lun;
> + dfu->data.scsi.part = third_arg;
> + }
> +
> + if (!strcmp(entity_type, "raw")) {
> + dfu->layout = DFU_RAW_ADDR;
> + dfu->data.scsi.lba_start = second_arg;
> + if (third_arg < 0) {
> + pr_err("raw requires two arguments\n");
> + return -EINVAL;
> + }
> + dfu->data.scsi.lba_size = third_arg;
> + dfu->data.scsi.lba_blk_size = blk_dev->blksz;
> +
> + /*
> + * In case the size is zero (i.e. scsi raw 0x10 0),
> + * assume the user intends to use whole device.
> + */
> + if (third_arg == 0)
> + dfu->data.scsi.lba_size = blk_dev->lba;
> +
> + } else if (!strcmp(entity_type, "part")) {
> + struct disk_partition partinfo;
> + int scsipart = second_arg;
> +
> + if (third_arg >= 0) {
> + pr_err("part only accepts one argument\n");
> + return -EINVAL;
> + }
> +
> + if (part_get_info(blk_dev, scsipart, &partinfo) != 0) {
> + pr_err("Couldn't find part #%d on scsi device #%d\n", scsipart,
> + dfu->data.scsi.lun);
> + return -ENODEV;
> + }
> +
> + dfu->layout = DFU_RAW_ADDR;
> + dfu->data.scsi.lba_start = partinfo.start;
> + dfu->data.scsi.lba_size = partinfo.size;
> + dfu->data.scsi.lba_blk_size = partinfo.blksz;
> + } else if (!strcmp(entity_type, "fat")) {
> + dfu->layout = DFU_FS_FAT;
> + } else if (!strcmp(entity_type, "ext4")) {
> + dfu->layout = DFU_FS_EXT4;
> + } else if (!strcmp(entity_type, "skip")) {
> + dfu->layout = DFU_SKIP;
> + } else if (!strcmp(entity_type, "script")) {
> + dfu->layout = DFU_SCRIPT;
> + } else {
> + pr_err("Memory layout (%s) not supported!\n", entity_type);
> + return -ENODEV;
> + }
> +
> + dfu->dev_type = DFU_DEV_SCSI;
> + dfu->get_medium_size = dfu_get_medium_size_scsi;
> + dfu->read_medium = dfu_read_medium_scsi;
> + dfu->write_medium = dfu_write_medium_scsi;
> + dfu->flush_medium = dfu_flush_medium_scsi;
> + dfu->inited = 0;
> + dfu->free_entity = dfu_free_entity_scsi;
> +
> + /* Check if file buffer is ready */
> + if (!dfu_file_buf) {
> + dfu_file_buf = memalign(CONFIG_SYS_CACHELINE_SIZE, CONFIG_SYS_DFU_MAX_FILE_SIZE);
> + if (!dfu_file_buf) {
> + pr_err("Could not memalign 0x%x bytes\n", CONFIG_SYS_DFU_MAX_FILE_SIZE);
> + return -ENOMEM;
> + }
> + }
> +
> + return 0;
> +}
> diff --git a/include/dfu.h b/include/dfu.h
> index e25588c33cb8..12f9dfcdfcdf 100644
> --- a/include/dfu.h
> +++ b/include/dfu.h
> @@ -23,8 +23,9 @@ enum dfu_device_type {
> DFU_DEV_RAM,
> DFU_DEV_SF,
> DFU_DEV_MTD,
> DFU_DEV_VIRT,
> + DFU_DEV_SCSI,
> };
>
> enum dfu_layout {
> DFU_RAW_ADDR = 1,
> @@ -98,8 +99,21 @@ struct sf_internal_data {
> struct virt_internal_data {
> int dev_num;
> };
>
> +struct scsi_internal_data {
> + int lun;
> +
> + /* RAW programming */
> + unsigned int lba_start;
> + unsigned int lba_size;
> + unsigned int lba_blk_size;
> +
> + /* FAT/EXT */
> + unsigned int dev; // Always 0???
> + unsigned int part;
> +};
> +
> #if defined(CONFIG_DFU_NAME_MAX_SIZE)
> #define DFU_NAME_SIZE CONFIG_DFU_NAME_MAX_SIZE
> #else
> #define DFU_NAME_SIZE 32
> @@ -125,8 +139,9 @@ struct dfu_entity {
> struct nand_internal_data nand;
> struct ram_internal_data ram;
> struct sf_internal_data sf;
> struct virt_internal_data virt;
> + struct scsi_internal_data scsi;
> } data;
>
> int (*get_medium_size)(struct dfu_entity *dfu, u64 *size);
>
> @@ -515,8 +530,20 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr,
> return -1;
> }
> #endif
>
> +#if CONFIG_IS_ENABLED(DFU_SCSI)
> +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr,
> + char **argv, int argc);
> +#else
> +static inline int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr,
> + char **argv, int argc)
> +{
> + puts("SCSI support not available!\n");
> + return -1;
> +}
> +#endif
> +
> extern bool dfu_reinit_needed;
> extern bool dfu_alt_info_changed;
>
> #if CONFIG_IS_ENABLED(DFU_WRITE_ALT)
>
> --
> 2.46.2
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