Creating a Secure Project
- 1.Create a new project with SAM L11 device.
- 2.Click on Add software
component to add TrustZone Manager middleware.
- 3.Once the middleware is added, go to
DASHBOARD and select the Project component. The
toolchain settings for Atmel Studio will be displayed under the Project
component. The toolchain settings for IAR and Keil are not provided in the UI;
the user needs to manually select those settings in the respective IDE.
- 4.Compiler miscellaneous flags are populated with ‘-std=gnu99 -mcmse’ settings. The ‘-mcmse’ flag is used to enable the compiler for creating CMSE secure executable files.
- 5.Linker miscellaneous flags are populated with ‘-Wl,--out-implib=libsecure_gateway_veneer.lib -Wl,--cmse-implib’ settings. ‘-Wl,--cmse-implib’ is for generating a secure gateway veneer and a symbol in an import library. If you do not need to generate a secure gateway library, remove this setting and keep the text box empty.
- 6.Select the TrustZone Manager Middleware software component and configure the settings like the different memory secure and non-secure sizes or the peripherals security attribution.
- 7.Hover over the question mark near each
setting to know more about those settings.
- 8.The Secure project will create two linker script files based on the above configuration; one for using in the secure project and another for using in the non-secure project that will be created later on.