Commit graph

24 commits

Author SHA1 Message Date
Angus Gratton
5b33d6cf94 Merge branch 'feature/mbedtls_add_faster_modexp' into 'master'
mbedtls: Add a new (X^Y) mod M implementation (HAC 14.94)

Closes IDF-965

See merge request espressif/esp-idf!6418
2019-11-06 15:51:28 +08:00
KonstantinKondrashov
5ed8388f6b mbedtls: Add Montgomery exponentiation implementation (HAC 14.94)
It gave us a better performance of RSA operations. (2~11 times)

The old modexp implementation (Z = X ^ Y mod M) loaded all the data into
the hw registers and was waiting for completion, but due to
the hardware RSA implementation, the calculations always started with 4096 bit,
which took a lot of time.
Measurement results (measurements were made for keys: 2048, 3072 and 4096 bits)
(Old) - Sliding-window exponentiation (HAC 14.85):
keysize = 2048 bits
RSA key operation (performance): public [93206 us], private [280189 us]
keysize = 3072 bits
RSA key operation (performance): public [293614 us], private [858157 us]
 keysize = 4096 bits
RSA key operation (performance): public [653192 us], private [1912126 us]

Instead (Old) - Sliding-window exponentiation (HAC 14.85) was implemented
(New) - Montgomery exponentiation (HAC 14.94) which showed
better performance on private and public keys.
keysize = 2048 bits
RSA key operation (performance): public [14504 us], private [149456 us]
keysize = 3072 bits
RSA key operation (performance): public [35073 us], private [392743 us]
keysize = 4096 bits
RSA key operation (performance): public [58650 us], private [787186 us]

For this reason, the old implementation was removed
and the MBEDTLS_HARDWARE_MPI option was turned on by default.

Why the MPI_INTERRUPT option is removed:
the old implementation used calculations on the hardware and
it took a lot of time (10ms - 500ms). And in order not to stand idle
while waiting for completion, an interrupt option was added.
This made it possible to carry out other tasks during the calculation,
and this one to block. The new method is free from such a drawback and
the maximum duration of one RSA HW operation does not exceed 70us (usually 2-70 μs).
This option is no longer needed.

Closes: IDF-965
2019-11-05 16:33:11 +08:00
Marcin Borowicz
6153a0ab62 spiffs: follow symlinks feature during partition in spiffsgen 2019-10-08 17:55:59 +08:00
Andrew
4fdaeb6b6e cmake: Add new compiler optimization levels definitions
Rename and add multiple kconfig compiler options. New compiler options
COMPILER_OPTIMIZATION_PERF and COMPILER_OPTIMIZATION_NONE have been added.
Optimize "Debug" and "Release" options to "Default" and "Size" respectively.
This commit also does the following:

- The COMPILER_OPTIMIZATION_PERF option introduced multiple bug.
This commit fixes those bugs.
- build.yml also updated to test for the new optimization options.
2019-09-06 17:37:19 +08:00
Angus Gratton
8dbe1f024e Merge branch 'bugfix/pthread_fixes' into 'master'
pthread fixes

Closes IDFGH-1437

See merge request espressif/esp-idf!5646
2019-07-30 09:41:31 +08:00
Ivan Grokhotkov
3c63f49591 examples: remove non-existent options from sdkconfig.defaults 2019-07-29 04:57:38 +02:00
Ivan Grokhotkov
e9de7b1df3 pthread: remove ESP32_ prefix from Kconfig options
pthread implementation is not chip-specific, so this prefix is not
needed.
2019-07-29 04:43:49 +02:00
Roland Dobai
22d070e0af spi_flash: Rename long Kconfig options 2019-06-12 08:03:07 +02:00
Gautier Seidel
542e544faa esp32: Allow fixed static RAM size and DRAM heap size
Merges https://github.com/espressif/esp-idf/pull/3222
2019-06-06 18:23:04 +10:00
Roland Dobai
1ad2283641 Rename Kconfig options (components/bootloader) 2019-05-21 09:32:55 +02:00
Roland Dobai
997b29a9ca Rename Kconfig options (components/esptool_py) 2019-05-21 09:32:55 +02:00
Roland Dobai
a1bddb923b Rename Kconfig options (components/bt) 2019-05-21 09:09:01 +02:00
Roland Dobai
24a2e5a17e Rename Kconfig options (components/tcpip_adapter) 2019-05-21 09:09:01 +02:00
Roland Dobai
0ae53691ba Rename Kconfig options (components/esp32) 2019-05-21 09:09:01 +02:00
Roland Dobai
d4af5e6fff Rename Kconfig options (components/ethernet) 2019-05-21 09:09:01 +02:00
Roland Dobai
92950db44e Rename Kconfig options (components/lwip) 2019-05-21 09:09:01 +02:00
Roland Dobai
e9f1011b1b Rename Kconfig options (components/driver) 2019-05-21 09:09:01 +02:00
Roland Dobai
64c2aa15aa Rename Kconfig options (components/freertos) 2019-05-21 09:09:01 +02:00
Roland Dobai
c5000c83d2 Rename Kconfig options (root) 2019-05-21 09:09:01 +02:00
Roland Dobai
23ee93ea76 Rename deprecated Kconfig options in a backward compatible way 2019-04-24 12:53:02 +02:00
Renz Christian Bagaporo
90ee405afd ldgen: update component linker fragment files 2019-04-04 15:57:34 +08:00
Angus Gratton
7f307423c1 newlib: Provide library name for ROM libc object files linked as PSRAM workarounds
Works around bug reported on forums where any source file ending in *lock.c or *creat.c
was being linked to IRAM.

https://esp32.com/viewtopic.php?f=13&t=8909&p=37362#p37362

Also moves all related functionality to newlib component.
2019-01-24 11:30:05 +08:00
Angus Gratton
769bd4a4af linker: When using section type attributes, create unique sections
* Prevents section type conflict errors if (say) const & non-const data
  is put into the same section (ie with DRAM_ATTR)

* Allows linker --gc-sections to remove unused custom sections
2018-12-19 04:42:04 +00:00
Renz Bagaporo
63411fc556 tools: implement linker script generation 2018-11-16 12:42:02 +08:00