⚠️ Rework processor boot configuration #1086
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plus internal cleanups
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Rework the boot configuration to make it easier to handle and more flexible for custom setups. Two new top generics are added:
BOOT_MODE_SELECT- boot mode select (0,1,2)BOOT_ADDR_CUSTOM- custom boot addressINT_BOOTLOADER_ENis removed.The following boot modes are supported:
BOOT_MODE_SELECT = 0: internal bootloader - enable the processor-internal BOOTROM module adn start executing the build-in bootloader after resetBOOT_MODE_SELECT = 1: custom - start executing at the address defined byBOOT_ADDR_CUSTOMafter resetBOOT_MODE_SELECT = 2: custom - enable the processor-internal IMEM, implement it as ROM, initialize it with the application imageneorv32_application_image.vhd(during synthesis) and start executing from the IMEM after reset