Ensure that code written to ram is flushed and that caches are cleared
before attempting to executing from ram. This fixes CI failures on the
MPU test when it is built for Cotex-M7 devices such as the
NUCLEO-F746ZG.
Make the following changes:
-Allow a vector specific ARM MPU driver by defining MBED_MPU_CUSTOM
-Allow ROM address to be configured for ARMv7-M devices by
setting the define MBED_MPU_ROM_END
-Add ROM write protection
-Add new functions and lock
-enable at boot
-disable during flash programming
Rename MpuXnLock to ScopedMpuXnLock so it has the same naming
convention as ScopedMutexLock. Also make this class inherit from
NonCopyable to prevent misuse.
Create a dedicated MPU directory for standard Arm MPU implementations
in preparation for the Arm v8m MPU. Replace MBED_MPU_ENABLED with
DEVICE_MPU to align with the porting layer of other HAL APIs.
When programming flash using the FlashIAP API allow execution from
ram. Many devices require flashing to be done from RAM.
Also allow execution from ram when running the low level flash tests.
Enable the MPU as part of the boot sequence and disable it before
starting a new application. Also add reference counted MPU lock and
unlock functions to allow code to execute from ram when necessary.
Test that the MPU correctly stops execution of memory in the stack
region, heap region, data region and bss region. Also check that the
MPU can be enabled, disabled and freed.
Adding new modules inside the namespace could be breaking change for existing code base
hence add `using namespace::class` for classes newly added to mbed namespace to maintian
backwards compatibility.
MBED_NO_GLOBAL_USING_DIRECTIVE is added to remove auto-addition of namespace
Macro guard `MBED_NO_GLOBAL_USING_DIRECTIVE` is added around namespace, to avoid
polluting users namespace.
IAR not able to assign default zero value in array and complaints of
internal error as below:
[ERROR] Internal error: [Front end]: assertion failed at:
"..\..\Translator\compiler_core\src\parser\edg\decl_inits.c", line 2031
1. Fixing astyle and docs
2. Extra mutex lock was removed
3. Bytes are updated when send/recv > 0 and not in case of -ve error
4. Review comments
5. Guard statistics implementation in test with MBED_NW_STATS_ENABLED
SocketStats Class is added to collect and provide the statistics information.
In this phase only socket information is collected and max sockets that can
be recorded at any time are configurable through 'MBED_CONF_NSAPI_SOCKET_STATS_MAX_COUNT'
Network statistics can be enabled through a macro MBED_NW_STATS_ENABLED
More information on design is captured in #8743
Russ Butler
Martin Kojtal
kegilbert
deepikabhavnani
Cruz Monrreal
Amanda Butler
Ari Parkkila
Teppo Järvelin
Michael Schwarcz
Alexander Zilberkant
Danny Shavit