Instead of polling the hardware entropy source a single time and
comparing the output with itself, the source is polled at least twice
and make sure that the separate outputs are different.
The self test is a quick way to check at startup whether the entropy
sources are functioning correctly. The self test only polls 8 bytes
from the default entropy source and performs the following checks:
- The bytes are not all 0x00 or 0xFF.
- The hardware does not return an error when polled.
- The entropy does not provide data in a patter. Only check pattern
at byte, word and long word sizes.
In the test script tests/scripts/all.sh the armcc build is a baremetal build
and doesn't use MBEDTLS_HAVE_TIME therefore the test configuration
MBEDTLS_PLATFORM_TIME_ALT which is dependent on it must be unset.
The test script tests/scripts/all.sh exits on first error, although it also
attempted to redirect error output from armcc and then output it after armcc
had completed. This never occurred because as soon as armcc failed the script
would end and the redirected output wouldn't be displayed.
This change removes that redirection.
* Check time platform abstraction macro definitions
This patch adds some checks to check_config.h to ensure that macro
definitions for the time platform abstraction are acceptable. In this
case the requirements are:
- MBEDTLS_PLATFORM_C and MBEDTLS_HAVE_TIME must be defined whenever
MBEDTLS_PLATFORM_TIME_ALT, MBEDTLS_PLATFORM_TIME_TYPE_MACRO or
MBEDTLS_PLATFORM_TIME_MACRO is defined.
- MBEDTLS_PLATFORM_STD_TIME and MBEDTLS_PLATFORM_TIME_ALT cannot be
defined simultaneously with MBEDTLS_PLATFORM_TIME_TYPE_MACRO or
MBEDTLS_PLATFORM_TIME_MACRO.
- MBEDTLS_HAVE_TIME and MBEDTLS_PLATFORM_TIME_ALT must be defined
whenever MBEDTLS_PLATFORM_STD_TIME is defined.
* Document requirements for time abstraction macros
Document that time platform abstraction macros
MBEDTLS_PLATFORM_TIME_ALT, MBEDTLS_PLATFORM_TIME_MACRO,
MBEDTLS_PLATFORM_TIME_TYPE_MACRO and MBEDTLS_PLATFORM_STD_TIME require
MBEDTLS_HAVE_TIME to be defined in config.h.
* Fix requires comment in config.h
* Split preprocessor condition for simplicity
* Add script to print build environment info.
The new script is also included in:
- all.sh
- basic-build-test.sh
* Tidy up environment reporting script.
Changes include:
- making the echo calls portable
- removing unnecessary brackets
- using more efficient checks for the existance of commands
- correcting typos and copyright year
* Update references to output_env.sh
In platform.c, made the time functions dependent on the configuration
MBEDTLS_HAVE_TIME to fix a build break where the functions could be
built but the mbedtls_time_t was not defined.
Separates platform time abstraction into it's own header from the
general platform abstraction as both depend on different build options.
(MBEDTLS_PLATFORM_C vs MBEDTLS_HAVE_TIME)
MBEDTLS_ENTROPY_NV_SEED is dependent on platform code unless an
alternative implementation is provided, therefore needs to be disabled
in the disabled filesystem IO build.
