Commit Graph

14 Commits

Author SHA1 Message Date
Angus Gratton
17adb40ca8 bootloader: Calculate SHA256 hash of image on every boot
Makes app image booting more reliable (256-bit rather than 8-bit verification.)

Some measurements, time to boot a 655KB app.bin file and run to app_main() execution.

(All for rev 1 silicon, ie no 340ms spurious WDT delay.)

80MHz QIO mode:
before = 300ms
after = 140ms

40MHz DIO mode:
before = 712ms
after = 577ms

40MHz DIO mode, secure boot enabled
before = 1380ms
after = 934ms

(Secure boot involves two ECC signature verifications (partition table, app) that take approx 300ms each with 80MHz CPU.)
2017-07-19 18:31:59 +10:00
Angus Gratton
caaa29c676 esp_image_format: ESP32 additional header does not contain an encrypt flag 2017-07-19 18:25:17 +10:00
Angus Gratton
43b99edf2b bootloader: Calculate SHA-256 of image while loading/verifying 2017-07-19 18:25:17 +10:00
Angus Gratton
0c8888d68f bootloader: Combine loading from flash & verifying to save boot time
Still needs updating to account for secure boot.
2017-07-19 18:25:17 +10:00
Angus Gratton
1f3a2e900c docs: Improve/clarify partition, OTA & SPI flash docs
Related to #313 https://github.com/espressif/esp-idf/issues/313
2017-02-20 15:31:42 +11:00
Ivan Grokhotkov
413f05ce09 Merge branch 'docs/flash_encryption_disable' into 'master'
Docs: Document flash encryption disable steps, clean up flash encryption & secure boot docs

Generate clean up of flash encryption & secure boot docs

Including steps for disabling flash encryption (for people who accidentally enable it).

See merge request !500
2017-02-15 13:31:08 +08:00
Angus Gratton
7c7edab328 flash encryption/secure boot: Restructure documentation
Also add steps to disable flash encryption, as some people seem to
accidentally enable it.

Explicitly mark the flash encryption and secure boot as "READ DOCS
FIRST" in menuconfig.
2017-02-15 09:42:46 +11:00
Angus Gratton
d8aae55eeb Flash encryption: Temporary fix for issue with stale cache reads
Seems doing certain kinds of short reads while flash encryption is
enabled will return stale data. This fixes it, but is probably a
little heavy-handed performance wise.
2017-01-26 18:29:18 +11:00
Angus Gratton
9eb135fd73 Flash encryption: Support enabling flash encryption in bootloader, app support
* App access functions are all flash encryption-aware
* Documentation for flash encryption
* Partition read/write is flash aware
* New encrypted write function
2016-12-01 23:49:12 -08:00
Angus Gratton
e459f803da secure boot: Functional partition table & app signature verification 2016-11-14 11:08:42 +11:00
Angus Gratton
fe66dd85f0 secure boot: Enable based on sdkconfig, remove "secure boot flag" from binary image 2016-11-14 11:08:42 +11:00
Angus Gratton
b5de581399 Secure boot: initial image signature support 2016-11-14 11:08:42 +11:00
Angus Gratton
98a0387854 bootloader_support: Move secure boot code to bootloader_support 2016-11-08 11:13:54 +11:00
Angus Gratton
aceb6517c0 Refactor existing bootloader common functionality into bootloader_support component 2016-11-02 17:58:41 +11:00