Boot process for early display initialization and visualization

A non-transitory machine-readable medium comprises executable computer program instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:

• powering on a system comprising a plurality of processor cores coupled to a cache;
• initializing, by a controller of the system, a portion of the cache as static memory for hardware initialization code usage prior to execution of the hardware initialization code, wherein the portion of cache is initialized as the static memory without using cache-as-random-access-memory (CAR);
• executing the hardware initialization code on one or more of the plurality of processor cores to initialize the system;
• performing display device initialization using the static memory from the portion of the cache, the hardware initialization code to cause initialization of a display device to be performed for display device initialization and bring up, wherein initialization and training of dynamic memory of the system occurs prior to booting to an operation system (OS) and occurs independently of and in parallel with initialization of the display device that utilizes the static memory;
• and
• transferring control of execution of the system from the hardware initialization code to operating system code executing on the system.

A system comprising:

• a hardware processor comprising a plurality of processor cores;
• a cache coupled to the hardware processor;
• storage for hardware initialization code;
• and
• a controller circuit to:
• responsive to a power on of the hardware processor, initialize a portion of the cache as static memory for hardware initialization code usage prior to execution of the hardware initialization code, wherein the portion of cache is initialized as the static memory without using cache-as-random-access-memory (CAR);
• and
• execute the hardware initialization code using the static memory of the portion of the cache, the hardware initialization code to cause initialization of a display device to be performed for display device initialization and bring up;
• wherein initialization and training of dynamic memory of the hardware processor occurs prior to booting to an operation system (OS) and occurs independently of and in parallel with initialization of the display device that utilizes the static memory.