Method for programming serial periphery interface (SPI) FLASH

Abstract

The invention discloses a method for programming a serial periphery interface (SPI) FLASH, and belongs to the technical field of SPI FLASH. The structure used in the method comprises the SPI FLASH, an SPI programming module and a personal computer (PC), wherein the SPI programming module comprises a field programmable gate array (FPGA) chip and a universal serial bus (USB) buffer; an SPI master controller and a USB slave controller are arranged in the FPGA chip; and the USB buffer of the SPI programming module receives the data transmitted from the PC and transmits the data to the USB slave controller; then the FPGA chip transmits the data received from the USB slave controller to the SPI master controller; and the SPI master controller writes the data into the SPI FLASH. The method for programming the SPI FLASH greatly accelerates the programming speed of the FLASH and saves development time.

Description

technical field [0001] The invention relates to the technical field of programming SPI FLASH, in particular to a method for programming SPI FLASH. Background technique [0002] The BMC (Main Board Management Controller) of the server motherboard mainly uses SPI (Serial Peripheral Interface--Serial Peripheral Interface) flash to store firmware (firmware). It is also getting bigger and bigger, and has been increased from the original 8M bytes to 16M bytes. [0003] Although the large-capacity SPI FLASH meets the needs of the increasing BMC management functions, the time required to burn the FLASH itself has doubled. At the same time, most of the current mainstream BMCs use ARM9 core microprocessors, and most of them use JTAG to download the bootloader to SPI FLASH during the debugging process. In this way, the bootloader must first be written into SDRAM through JTAG, and then start in SDRAM. bootloader, and then download the firmware through the tftp tool of the bootloader, ...

AI Technical Summary

Problems solved by technology

[0003] Although the large-capacity SPI FLASH meets the needs of the increasing BMC management functions, the time required to burn the FLASH itself has doubled

At the same time, most of the current mainstream BMCs use ARM9 core microprocessors, and most of them use JTAG to download the bootloader to SPI FLASH during the debugging process. In this way, the bootloader must first be written into SDRAM through JTAG, and then start in SDRAM. bootloader, and then download the firmware through the tftp tool of the bootloader, and then write it into the SPI FLASH. First, this method takes a long time, and for some ARM chips, it is necessary to send some configuration script commands through JTAG to download the bootloader to sdram, making development more difficult

Another way to program SPI FLASH is to program the SPI FLASH chip through a general-purpose programmer, but this method is more suitable for the mass production stage, not suitable for the development stage

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