1. Build TF-M v1.3 with GNUARM and HXT not present.
2. Support configurability of HXT presence (targets.json).
3. Default HXT to not present (targets.json). This must align with built TF-M secure code above.
LXT/HXT are external crystl oscillator and can be absent on custom board.
This enables configuring LXT/HXT presence:
1. By default, LXT/HXT are configured to be present, except M252 which has no HXT.
2. When LXT is configured to not present, lp_ticker/watchdog will clock by LIRC instead.
3. Limitations:
(1) On all targets, LIRC-clocked lp_ticker gets inaccurate and fails to pass tests.
(2) On NUC472/M453, HIRC-clocked PLL doesn't output 1MHz-aligned frequency. us_ticker gets slight inaccurate.
(3) On all targets, LIRC-clocked RTC is not supported due to no H/W path/RTC clock source reset to LXT on reset/RTC not trimmed for other clock rates.
4. On M263, TRNG's clock source defaults to LXT and needs special handling without LXT.
5. On M252, replace target.hxt-enable with target.hxt-present for consistency.
1. Update TF-M Secure bin enabling TRNG as entropy source
2. Replaced with above, remove TRNG HAL stuff on Mbed, including platform extra secure functions, cmake, etc.
1. Configure non-secure target name to NU_M2354 (targets/targets.json). No NU_M2354_NS alias
2. Following template target, enable image signing and concatenating in post-build process
(1) Add post-build script (tools/targets).
(2) Enable TF-M custom build by centralize relevant stuff imported from TF-M (COMPONENT_TFM_S_FW).
3. Add M2354Code.merge_secure into whitelist of uvision6 (tools/export/uvision/__init__.py).
4. Add M2354 CMSIS pack database (tools/arm_pack_manager/index.json).
5. Configure stdio baudrate to 115200 to match TF-M port (platform/mbed_lib.json).
6. Define CMSIS_NVIC_VIRTUAL to override NVIC_SystemReset with TF-M version (cmsis_nvic_virtual.h).
7. Override tfm_ns_interface_xxx(...) to enable NS secure call:
(1) At pre-rtos stage
(2) In SVC context
8. Implement secure function call with tfm_platform_ioctl(...).
9. Combine stddriver_secure.h/c and hal_secure.h/c into platform_extra_secure.h/c.
10. Fix peripheral base to non-secure (PeripheralNames.h) (TrustZone-unaware since Mbed OS 6.0).
11. Fix NU_PORT_BASE/NU_GET_GPIO_PIN_DATA/NU_SET_GPIO_PIN_DATA to non-secure (PinNamesCommon.h) (TrustZone-unaware since Mbed OS 6.0).
12. NSC convention for StdDriver sys/clk (both TF-M and Mbed must follow)
(1) SYS_ResetModule
Usage: Replaced with SYS_ResetModule_S on Mbed OS
Action: Make it inaccessible from Mbed (neither source nor NSC). Provide SYS_ResetModule_S on Mbed via platform ioctl instead.
(2) CLK_GetXxx
Usage: Called in bpwm/i2s/qspi/sc/sdh and system_M2354 on Mbed OS
Action: Make them inaccessible from Mbed (neither source nor NSC). Re-provide them on Mbed via platform ioctl instead.
13. Remove DISABLE/ENABLE macro definitions in BSP to avoid name conflict with other modules
14. Change to TMR4/5 from TMR2/3 for implementing us_ticker/lp_ticker because TMR2 is used for TF-M NSPE test
15. Support cmake
NOTE: Export(uvision6) doesn't support TF-M target. To enable it for partial compile on Keil, force below function to return true.
is_target_supported(tools/export/uvision/__init__.py)
Modify `targets.json` to configure bare metal for the following targets:
NUMAKER_IOT_M252, NUMAKER_IOT_M263A, NUMAKER_IOT_M487, NUMAKER_PFM_M487,
NUMAKER_PFM_NUC472. Add target link interface between nuvoton library
and mbed-cmsis-cortex-m.
Refactor all Nuvoton targets to be CMake buildsystem targets. This removes
the need for checking MBED_TARGET_LABELS repeatedly and allows us to be
more flexible in the way we include MBED_TARGET source in the build.
A side effect of this is it will allow us to support custom targets
without breaking the build for 'standard' targets, as we use CMake's
standard mechanism for adding build rules to the build system, rather
than implementing our own layer of logic to exclude files not needed for
the target being built. Using this approach, if an MBED_TARGET is not
linked to using `target_link_libraries` its source files will not be
added to the build. This means custom target source can be added to the
user's application CMakeLists.txt without polluting the build system
when trying to compile for a standard MBED_TARGET.
Add license identifier to files which Arm owns the copyright to,
and contain either BSD-3 or Apache-2.0 licenses. This is to address
license errors raised by scancode analysis.
Workaround a bug where the boot stack size configuration option is not
passed on to armlink, the Arm Compiler's linker. Prefer
MBED_CONF_TARGET_BOOT_STACK_SIZE if present, as this is what the
configuration system should provide. Fall back to MBED_BOOT_STACK_SIZE
if MBED_CONF_TARGET_BOOT_STACK_SIZE is not defined, as in the case of
buggy tools. If both MBED_CONF_TARGET_BOOT_STACK_SIZE and
MBED_BOOT_STACK_SIZE are not defined, then we fall back to a hard-coded
value provided by the linkerscript. See
https://github.com/ARMmbed/mbed-os/issues/13474 for more information.
To allow overriding of the boot stack size from the Mbed configuration
system, consistently use MBED_CONF_TARGET_BOOT_STACK_SIZE rather than
MBED_BOOT_STACK_SIZE.
Fixes#10319
Martin Kojtal
Chun-Chieh Li
cyliangtw
George Psimenos
Harrison Mutai
Hugues Kamba
pea-pod
Jaeden Amero