CN204440377U - A kind of NandFlash firmware burning device - Google Patents

Abstract

The utility model relates to a kind of NandFlash firmware burning device, and for carrying out firmware batch burning to NandFlash chip in process of production, this burning device comprises primary module and N number of submodule; Described primary module comprise a CPU and be connected with a CPU a SDRAM, NandFlash, NorFlash, LCD liquid crystal display, USB2.0 interface circuit, USB1.0 interface circuit, MINI_USB interface circuit and first serial circuit; The 2nd SDRAM, the 2nd NorFlash, usb circuit, second serial circuit, LED light and SOCKET socket that described submodule comprises the 2nd CPU and is connected with the 2nd CPU; Described USB2.0 interface circuit is connected with described usb circuit through USB HUB equipment.The purpose of this utility model realizes direct chip programming to NandFlash, and support to use various chips programming scheme, and what realize NandFlash subregion is file system mounted.

Description

A kind of NandFlash firmware burning device

Technical field

The utility model relates to Device Programming technical field, particularly a kind of NandFlash firmware burning device.

Background technology

Current most of electronic products all adopts NandFlash as memory device.Therefore need to carry out firmware prepackage to NandFlash, and the lower dress method of tradition is welded to by NandFlash on mainboard and turns to be made into complete machine, recycling PC uses Samba software to carry out ISP(In System Program in-system programming to the complete machine assembled) fill under firmware, because the bad block in NandFlash is stochastic distribution, before lower dress, carry out bad cannot block scan to chip.If find when filling under complete machine that chip belongs to defective products, then need chip to blow down again to weld new chip, operation is numerous and diverse and lower dress firmware is comparatively large, and process is very consuming time.Therefore need to invent the NandFlash of a kind of cd-rom recorder to batch to enhance productivity and carry out prepackage firmware.Refer to Fig. 1, the basic preparation of cd-rom recorder on the market is now: PC, a programmable device and the drive software supporting with programmable device.And the SOCKET(of a cd-rom recorder is used for inserting the stand of pending element) not only the number of chips of burning is limited and be consumables, can only by complete machine depot repair if damage, and it is also higher to the requirement of operating personnel, so invention one can not connect computer energy independent work, simple to operate, and can seem day by day urgent by the cd-rom recorder of the numerous individual module of requirements extend.

Summary of the invention

The purpose of this utility model is to provide a kind of hardware configuration of NandFlash firmware burning device, and adopt USB HUB equipment to expand, coordinate existing burning program, can realize the batch programming to NandFlash, and adopt modular design, hardware configuration is simple.

The utility model adopts following scheme to realize: a kind of NandFlash firmware burning device, for carrying out firmware batch burning to NandFlash chip in process of production, is characterized in that: comprise primary module and N number of submodule; Wherein N be not less than 1 natural number;

Described primary module comprise a CPU and be connected with a CPU a SDRAM, NandFlash, NorFlash, LCD liquid crystal display, USB2.0 interface circuit, USB1.0 interface circuit, MINI_USB interface circuit and first serial circuit;

The 2nd SDRAM, the 2nd NorFlash, usb circuit, second serial circuit, LED light and SOCKET socket that described submodule comprises the 2nd CPU and is connected with the 2nd CPU; Described USB2.0 interface circuit is connected with described usb circuit through USB HUB equipment.

Further, described first serial circuit has five serial ports.

Further, the 2nd described CPU is also connected with SD card.

The beneficial effects of the utility model realize the programming of large batch of NandFlash direct chip, and break away from PC independent work, simple to operate and can by the cd-rom recorder of the numerous individual module of requirements extend, primary module and submodule are completely independent in hardware design, and primary module only to be powered to submodule by USB and communicated.

Accompanying drawing explanation

Fig. 1 is the structure principle chart of traditional firmware burning device.

Fig. 2 is the structure principle chart of the utility model embodiment.

Fig. 3 is the software control flow chart of the utility model embodiment.

Embodiment

For enabling above-mentioned purpose of the present utility model, feature and advantage more become apparent, and are described in detail embodiment of the present utility model below in conjunction with accompanying drawing.

Set forth detail in the following description so that fully understand the utility model.But the utility model can be different from alternate manner described here to implement with multiple, those skilled in the art can when doing similar popularization without prejudice to when the utility model intension.Therefore the utility model is not by the restriction of following public embodiment.

As shown in Figure 2, the utility model adopts modularized design scheme.This NandFlash firmware burning device, for carrying out firmware batch burning to NandFlash chip in process of production, it comprises primary module and N number of submodule; Wherein N be not less than 1 natural number; Described primary module comprise a CPU and be connected with a CPU a SDRAM, NandFlash, NorFlash, LCD liquid crystal display, USB2.0 interface circuit, USB1.0 interface circuit, MINI_USB interface circuit and first serial circuit; The 2nd SDRAM, the 2nd NorFlash, usb circuit, second serial circuit, LED light and SOCKET socket that described submodule comprises the 2nd CPU and is connected with the 2nd CPU; Described USB2.0 interface circuit is connected with described usb circuit through USB HUB equipment.

Preferably, described first serial circuit has five serial ports.The 2nd described CPU is also connected with SD card.

Concrete, the major function of the utility model primary module manages each submodule and controls, and checks the burning sheet bag version of each submodule, and monitor the running status of each submodule in real time, and status information be presented on liquid crystal display.Each submodule is completely independently in hardware design, only uses USB to communicate with primary module.Primary module each submodule corresponding all adopts independent thread to process, and is independent of each other between each thread.

Hardware characteristics of the present utility model is better understood in order to allow those skilled in the art, be briefly described below in conjunction with method for burn-recording, this method for burn-recording comprises following flow process, being noted that the method is not claimed, only using as understanding the application's hardware characteristics: S01: whether primary module detects automatically has USB flash disk to insert, if do not enter S03, otherwise detect and whether there is latest firmware, if do not enter S03, otherwise enter S02; S02: carry out firmware renewal, simultaneously LCD liquid crystal display upgrades process, upgrades completely to enter S03; S03: whether primary module is started shooting by USB detection sub-module; S04: start shooting when there being submodule, then whether detection sub-module firmware is up-to-date, if enter S05, otherwise primary module is upgraded automatically by USB antithetical phrase module firmware, simultaneously primary module LCD liquid crystal display upgrades process, and after renewal, submodule is restarted and standbyly entered S05; S05: whether submodule detects burning/recording chip exists, if existed, enters S06, otherwise notice primary module chip is not in place, and is shown by LCD; S06: primary module notice burns sheet; S07: submodule starts to burn sheet, primary module LCD liquid crystal display progress displaying; S08: burn sheet and complete acquisition result.

Concrete, as shown in Figure 3, need to carry out the renewal of firm file bag before burning sheet.First the USB flash disk having firm file bag is received primary module USB2.0 interface, primary module can check the version of this firm file bag, if version is different, then by firm file packet replication to the NandFlash of primary module to upgrade backup.

After primary module completes and burns the renewal of sheet bag, open the power supply of all submodules, primary module can inquire about the burning sheet bag version of each submodule, if version is different, backup can be burnt sheet bag is issued to correspondence submodule by USB by primary module automatically.It is inner that burning sheet bag can be kept at SD card by submodule, and after completing transmission, submodule starts to unpack burning sheet bag, and carries out SHA verification to each file after unpacking, and after completing, namely submodule completes renewal.Because each submodule is all independent operating, so renewal rewards theory carries out simultaneously.Complete submodule automatic shutdown after upgrading.

When carrying out the operation of burning sheet, first the NandFlash chip of sky being put on chip carrier, opening corresponding submodule power supply.After starting, primary module can check the burning sheet version information of submodule, confirm correctly, submodule can load the configuration file burning and obtain when sheet bag unpacks automatically, and by the programming scheme that each firmware file is arranged according to configuration file, programming is in the corresponding address of the corresponding subregion of NandFlash.After completing, submodule can notify that primary module burns sheet result, and automatic shutdown.Burning sheet result is shown on liquid crystal display by primary module simultaneously.

Burn in sheet process, submodule can automatically load and resolve configuration file, and according to the configuration information of configuration file, performs corresponding burning sheet scheme to corresponding file.

Scheme 1: open MTD character device, is written on corresponding address by firmware;

Scheme 2: MTD block device is mounted to file, unzips to carry path by compressed package afterwards, and after completing, verification All Files, finally unloads block device;

Scheme 3: MTD block device is mounted to file, reads Shell processing scripts default in configuration file and performs, unloading block device after completing;

In sum, feature of the present utility model is, supports to use various chips programming scheme.Can the chip-count of simultaneously programming determine according to the submodule number of carry, and pass through the expansion of USB HUB equipment, in theory can carry more than 100 submodules.And corresponding single submodule, the design of software and hardware all takes modularized processing, ensures the independence that each submodule runs, thus avoid the mutual interference between submodule.

On the other hand, by arranging configuration file, can control the programming processing mode of all firmwares, can meet all demands of producing at present, under eliminating in the past numerous and diverse serial ports, dress operates.And support in configuration file to use Shell script to carry out special processing, can complete all under Linux terminal all tasks manageable, this function has very strong practicality.

Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solutions of the utility model; therefore; every content not departing from technical solutions of the utility model; the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all belong to the protection domain of technical solutions of the utility model.The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.

Claims (3)

1. a NandFlash firmware burning device, for carrying out firmware batch burning to NandFlash chip in process of production, is characterized in that: comprise primary module and N number of submodule;

Described primary module comprise a CPU and be connected with a CPU a SDRAM, NandFlash, NorFlash, LCD liquid crystal display, USB2.0 interface circuit, USB1.0 interface circuit, MINI_USB interface circuit and first serial circuit;

The 2nd SDRAM, the 2nd NorFlash, usb circuit, second serial circuit, LED light and SOCKET socket that described submodule comprises the 2nd CPU and is connected with the 2nd CPU; Described USB2.0 interface circuit is connected with described usb circuit through USB HUB equipment.

2. NandFlash firmware burning device according to claim 1, is characterized in that: described first serial circuit has five serial ports.

3. NandFlash firmware burning device according to claim 1, is characterized in that: the 2nd described CPU is also connected with SD card.