Commit Graph

8 Commits

Author SHA1 Message Date
Damien George
bd7110a3d5 stm32/mboot: Introduce MBOOT_ERRNO_xxx constants and use them.
So that a failed update via fsload can be more easily diagnosed.

Signed-off-by: Damien George <damien@micropython.org>
2021-01-29 15:02:55 +11:00
Damien George
0efa0b5437 stm32/mboot: Add ELEM_TYPE_STATUS element so application can get status.
This new element takes the form: (ELEM_TYPE_STATUS, 4, <address>).  If this
element is present in the mboot command then mboot will store to the given
address the result of the filesystem firmware update process.  The address
can for example be an RTC backup register.

Signed-off-by: Damien George <damien@micropython.org>
2021-01-29 15:02:55 +11:00
Damien George
c6f334272a stm32/mboot: Add support for signed and encrypted firmware updates.
This commit adds support to stm32's mboot for signe, encrypted and
compressed DFU updates.  It is based on inital work done by Andrew Leech.

The feature is enabled by setting MBOOT_ENABLE_PACKING to 1 in the board's
mpconfigboard.mk file, and by providing a header file in the board folder
(usually called mboot_keys.h) with a set of signing and encryption keys
(which can be generated by mboot_pack_dfu.py).  The signing and encryption
is provided by libhydrogen.  Compression is provided by uzlib.  Enabling
packing costs about 3k of flash.

The included mboot_pack_dfu.py script converts a .dfu file to a .pack.dfu
file which can be subsequently deployed to a board with mboot in packing
mode.  This .pack.dfu file is created as follows:
- the firmware from the original .dfu is split into chunks (so the
  decryption can fit in RAM)
- each chunk is compressed, encrypted, a header added, then signed
- a special final chunk is added with a signature of the entire firmware
- all chunks are concatenated to make the final .pack.dfu file

The .pack.dfu file can be deployed over USB or from the internal filesystem
on the device (if MBOOT_FSLOAD is enabled).

See #5267 and #5309 for additional discussion.

Signed-off-by: Damien George <damien@micropython.org>
2021-01-18 12:43:01 +11:00
Damien George
67fd58bbd2 stm32/mboot: Add support for littlefs.
Mboot now supports FAT, LFS1 and LFS2 filesystems, to load firmware from.
The filesystem needed by the board must be explicitly enabled by the
configuration variables MBOOT_VFS_FAT, MBOOT_VFS_LFS1 and MBOOT_VFS_LFS2.
Boards that previously used FAT implicitly (with MBOOT_FSLOAD enabled) must
now add the following config to mpconfigboard.h:

    #define MBOOT_VFS_FAT (1)

Signed-off-by: Damien George <damien@micropython.org>
2020-06-26 21:17:02 +10:00
Damien George
390f32922d stm32/mboot: Decouple stream, filesystem and top-level loading code.
This commit factors the code for files and streaming to separate source
files (vfs_fat.c and gzstream.c respectively) and introduces an abstract
gzstream interface to make it easier to plug in different filesystems.

Signed-off-by: Damien George <damien@micropython.org>
2020-06-26 21:15:30 +10:00
Damien George
c8f19f1371 stm32/mboot: Make _estack an array to avoid compiler warnings.
The compiler can warn about out-of-bounds array access if _estack is just a
single uint8_t.
2019-07-09 11:33:57 +10:00
Damien George
3d0c31e60e stm32/mboot: Move some BSS vars to new section that isn't zeroed out.
Zeroing out data on startup takes time and is not necessary for certain
variables.  So provide a declaration for such variables and use it.
2019-02-15 15:09:54 +11:00
Damien George
ff04b78ffd stm32/mboot: Add support for loading gzip'd firmware from a filesystem.
This adds support to mboot to load and program application firmware from
a .dfu.gz file on the board's filesystem.  See mboot/README.md for details.
2019-02-15 15:09:48 +11:00