Hi,
I have two questions regarding STM32H750:
1) I would like to pre-burn its internal flash with a simple code that enable XIP (execute in place) from external SPI flash and jump to some initial address on this external flash. Then I like to permanently lock the internal flash content (e.g. I prefer by eFuse but bootstrap might be also ok) - is it doable?
2) After executing some boot-loader from the external SPI in XIP mode I would like to jump into SRAM and execute from there. I assume the external SPI is still mapped, however, I do like to "take control" over the external SPI from a different chip. That is, both the STM32H750 and another chip are connected to the same SPI with mux that is controlled by the other chip. after the STM32H750 boots up and start executing from SRAM the other chip will move the mux select so the STM32H750 won't be able to access it (till next reset). From within, the STM32H750 CPU we will not access the external SPI addresses, of course. Is it doable?
