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3.2.3 Boot Configuration Table A boot configuration table is used if certain peripherals must be programmed with values that differ from their reset values before loading an application. For example, if the application needs to be loaded into DDR memory, the boot configuration table can be used to program the DDR registers and enable the DDR peripheral before loading the application code into DDR. Each table entry in the boot configuration table has three elements: • The address to be modified • The set mask • The clear mask The RBL reads the specified address, then sets any bits that are set in the set mask element and clears any bits that are set in the clear mask element. If both the set and clear mask elements are 0, the value in the address field is branched via a standard call with the return address stored in register B3. The boot configuration table is terminated when all three elements are 0.
