Commit Graph

19 Commits

Author SHA1 Message Date
Laukik Hase
c1bed366ba
nvs_flash: Add support for HMAC-based NVS encryption keys protection scheme
- This features allows the NVS encryption keys to be derived and protected using
  the HMAC peripheral. Since the encryption keys are derived at runtime, they
  are not stored anywhere in the flash and hence this feature does not require
  a separate `nvs_keys` partition.
2023-05-23 13:55:52 +05:30
Jakob Hasse
d52a21de5c Random NVS fixes
* Checking Lock::init() now
* fixed typos in nvs_flash.h
* Added missing parameter checks in nvs encryption
  function

* Closes IDF-1462
* Closes IDF-2900
2021-03-08 14:41:53 +08:00
Aditya Patwardhan
a02be97fda nvs_flash: Modify the default NVS initialization API with internal nvs encryption
handling (only when nvs encryption is enabled)
    * NVS Encryption will now be turned on by default with flash encryption
    * Updated the flash encryption example to shocase NVS encryption
    along with information on how to configure and use NVS encryption
    * Updated respective test case
    * Added two partition tables for NVS encryption
     i) Table 1- Single factory app, no OTA, encrypted NVS
     ii) Table 2- Factory app, Two OTA, encrypted NVS
2021-01-20 11:12:14 +00:00
Aditya Patwardhan
163d5f314a nvs_flash: fix nvs initialization API documentation 2020-12-15 08:11:49 +05:30
Dmitriy Shilin
de89598779 nvs: allow to specify custom partition
Closes https://github.com/espressif/esp-idf/pull/5172
2020-05-27 11:22:32 +08:00
Jakob Hasse
98b1da9e60 NVS: more graceful behavior for erasing partitions 2020-04-03 11:48:07 +08:00
Jakob Hasse
c6deffb8a2 NVS Flash: prevent erasing initialized partition
Closes https://github.com/espressif/esp-idf/issues/4755
Closes https://github.com/espressif/esp-idf/issues/2777

* nvs_flash_erase_partition() checks whether
  the parition in question is initialized
  already and will return an error if so
* reflect changes in the documentation
2020-02-19 18:16:04 +01:00
Jakob Hasse
c31c45cae7 NVS: partition name is copied now
Closes IDF-1231
2020-01-02 09:18:24 +08:00
Sagar Bijwe
48fccbf5dd nvs_flash: Add support for nvs encryption 2018-09-24 11:25:21 +05:30
Ivan Grokhotkov
f32b25ebe2 nvs_flash: add functions to deinitialize storage 2017-09-19 10:39:44 +08:00
Amey Inamdar
a2dcf7faa8 nvs: Support for handling multiple NVS partitions
This commit adds support for multiple NVS partitions. This provides application a flexibility to have multiple NVS
partitions such as separate partition with read-only manufacturing data and read-write partition with configuration.
Application can also use this to separate out application's configuration storage from system configuration.

This feature does not change any of the basic property of NVS subsystem. The same-named namespaces across partitions are
considered to be different namespaces. The original NVS API available for the applications remains unchanged. The only
difference is that instead of first NVS partition in the partition table, it now operates on the partition with label
"nvs" (which is default in the IDF provided partition table files). Additional APIs are provided to open a handle and
erase NVS with partition name as a parameter.

A test case is added in the host tests and it is made sure that all the host tests pass. nvs_rw_value app is also tested
with multiple partitions.

Signed-off-by: Amey Inamdar <amey.inamdar@gmail.com>
2017-08-22 13:48:14 +05:30
Ivan Grokhotkov
979fce0df5 bt: call nvs_flash_init in examples, show error if NVS is not initialized
NVS is used to store PHY calibration data, WiFi configuration, and BT
configuration. Previously BT examples did not call nvs_flash_init,
relying on the fact that it is called during PHY init. However PHY init
did not handle possible NVS initialization errors.

This change moves PHY init procedure into the application, and adds
diagnostic messages to BT config management routines if NVS is not
initialized.
2017-07-17 21:29:50 +08:00
Ivan Grokhotkov
5a23ec4dc4 nvs: check that storage has at least one free page
This change adds a check for the free page count to nvs_flash_init.
Under normal operation, NVS keeps at least one free page available,
except for transient states such as freeing up new page. Due to external
factors (such as NVS partition size reduction) this free page could be
lost, making NVS operation impossible. Previously this would cause an
error when performing any nvs_set operation or opening a new namespace.
With this change, an error is returned from nvs_flash_init to indicate
that NVS partition is in such a state.
2017-03-14 22:03:39 +08:00
Ivan Grokhotkov
6e97936bac nvs: allow nvs_flash_init to be called more than once
Also don’t assert in nvs_* functions if nvs_flash_init wasn’t called,
and make nvs_flash_init_custom an internal API for unit tests.
2016-11-18 20:11:16 +08:00
Ivan Grokhotkov
51021b06f8 nvs: initialize using layout from partition table 2016-11-18 20:11:16 +08:00
Liu Zhi Fu
936b02216b docs/nvs_flash: update the nvs flash offset comment according review 2016-11-17 11:44:39 +08:00
Krzysztof
12efd96fb4 Corrected documentation style
This is for better visuaization with Sphinx
2016-11-01 01:21:18 +08:00
Angus Gratton
a98ab8d801 nvs: Remove flash layout arguments from nvs_init()
Add notes that current NVS layout defaults are a Work In Progress and
not yet integrated with the partition table.
2016-09-27 13:28:45 +10:00
Ivan Grokhotkov
bd6ea4393c Initial public version 2016-08-17 23:08:22 +08:00