Flash storage system and method for accessing a boot program
View Patent ↗A computing system includes a flash storage device that loads a boot program from a flash storage of the flash storage device to a random access memory of the flash storage device. A processor of the computing system then accesses the boot program from the random access memory and executes the boot program.
1. A flash storage system for accessing a boot program for a computing system, the flash storage system comprising:
a flash storage;
a random access memory;
a flash controller coupled to the flash storage and the random access memory, the flash controller configured to load the boot program from the flash storage into the random access memory;
a first bus interface coupled in communication with the random access memory and the flash controller, wherein the first bus interface is configured to be coupled to a system bus of the computing system; and
a second bus interface coupled in communication with the flash controller, wherein the second bus interface is configured to be coupled to a communication bus of the computing system.
2. The flash storage system of claim 1 , wherein the flash controller is further configured to load the boot program from the flash storage into the random access memory in response to a start signal.
3. The flash storage system of claim 2 further configured to generate the start signal upon a power-on of the flash storage system.
4. The flash storage system of claim 1 further comprising an integrated circuit comprising the flash storage, the random access memory, and the flash controller.
5. The flash storage system of claim 1 , wherein the flash controller is further configured to load the boot program from the flash storage into the random access memory by performing a direct memory access.
6. The flash storage system of claim 1 further configured to generate a ready signal indicating the boot program is accessible from the random access memory.
7. The flash storage system of claim 1 , wherein the flash controller is further configured to load the boot program from the random access memory to a data memory external of the flash storage system and to generate a ready signal indicating the boot program is accessible from the data memory.
8. The flash storage system of claim 7 , wherein the flash controller is further configured to load the boot program from the random access memory to the data memory by performing a direct memory access.
9. A computing system, comprising:
a processor coupled to a system bus and a communication bus;
a data memory coupled to the processor via the system bus; and
a flash storage device coupled to the processor, the flash storage device comprising
a flash storage;
a random access memory;
a flash controller coupled to the flash storage and the random access memory, the flash controller configured to load the boot program from the flash storage into the random access memory;
a first bus interface coupled in communication with the random access memory and the flash controller, wherein the first bus interface is configured to be coupled to the system bus; and
a second bus interface coupled in communication with the flash controller, wherein the second bus interface is configured to be coupled to the communication bus.
10. The computing system of claim 9 , wherein the flash controller is further configured to load the boot program from the flash storage into the random access memory in response to a start signal.
11. The computing system of claim 9 , wherein the flash storage device is further configured to generate the start signal upon a power-on of the flash storage system.
12. The computing system of claim 9 , wherein the processor is further configured to generate the start signal upon a power-on of the computing system.
13. The computing system of claim 9 further comprising an integrated circuit comprising the flash storage, the random access memory, and the flash controller.
14. The computing system of claim 9 , wherein the flash controller is further configured to load the boot program from the flash storage into the random access memory by performing a direct memory access.
15. The computing system of claim 9 , wherein the flash controller is further configured to generate a ready signal indicating the boot program is accessible from the random access memory.
16. The computing system of claim 9 , wherein the flash controller is further configured to load the boot program from the random access memory into the data memory.
17. The computing system of claim 16 , wherein the processor is further configured to generate a ready signal indicating the boot program is accessible from the data memory.
18. A method of accessing a boot program in a computing system comprising a flash storage device, the method comprising:
receiving a start signal;
loading the boot program from a flash storage of the flash storage device to a random access memory of the flash storage device based on the start signal, wherein the boot program comprises a basic input-output system; and
generating a ready signal indicating the boot program is accessible in the random access memory.
19. The method of claim 18 further comprising loading the boot program into the flash storage.
20. The method of claim 18 further comprising loading the boot program into a data memory of the computing system.