Support vector table in RAM for most CM0(+) devices #773
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salkinium
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@salkinium I was able to move all platform specific things to the :platform:core module. Are you fine with it now? I'll will have to add some documentation. |
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I have added the missing documentation. |
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Almost all Cortex-M0+ devices support vector table relocation using SCB->VTOR. This includes all STM32 and SAM M0+ devices.
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For executing an application from a custom bootloader the vector table has to be relocated. On all Cortex-M cores except M0 the vector table relocation register can be set to the application's vector table location. Cortex M0 cores don't have this feature.
On some Cortex-M0 devices there is a platform specific method to relocate the vector table by placing it in RAM. They allow to remap the start of ram to the address
0x0where the vector table is located. Thus, vector table relocation is achieved on an M0 core.All M0+ devices I could find provide the
SCB->VTORregister as an optional core feature.SCB->VTORon M0+ cores