Boot code patching apparatus and method, medium, device, and system on chip

A boot code patching method, comprising:

• reading a boot code from a first memory and executing the boot code;
• reading patch data from a second memory in response to a first preset instruction in the boot code;
• setting a breakpoint for the boot code through a debug control channel based on the patch data;
• in response to the execution proceeding to the breakpoint of the boot code, jumping to a patch code corresponding to the breakpoint in the patch data;
• and
• in response to execution of the patch code corresponding to the breakpoint being completed, jumping to a return address corresponding to the breakpoint, and continuing executing the boot code.

A system on chip, wherein the system on chip comprises a boot code patching apparatus, wherein the boot code patching apparatus comprises:

• a first memory, configured to store a boot code;
• a second memory, configured to store preset patch data;
• and
• a processor, configured to:
• read the boot code from the first memory and execute the boot code;
• read the patch data from the second memory in response to a first preset instruction in the boot code;
• set a breakpoint for the boot code through a debug control channel, based on the patch data;
• in response to the execution proceeding to the breakpoint of the boot code, jump to a patch code corresponding to the breakpoint in the patch data;
• and
• in response to execution of the patch code corresponding to the breakpoint being completed, jump to a return address corresponding to the breakpoint, and continue executing the boot code.