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Method and apparatus for storing electronic system firmware using mlc NVM

A technology of electronic system and firmware, applied in the direction of response error generation, redundancy in operation, data error detection, input/output to record carrier, etc., can solve the problem of low reliability of MLCNVM stored data and so on

Active Publication Date: 2020-09-01
MEMBLAZE TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor hopes to use the lower-cost MLC NVM to store the firmware of the electronic device, and at the same time solve the problem of low reliability of the data stored in the MLC NVM, so as to ensure the reliable operation of the electronic device when using the MLC NVM to store the firmware

Method used

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  • Method and apparatus for storing electronic system firmware using mlc NVM
  • Method and apparatus for storing electronic system firmware using mlc NVM
  • Method and apparatus for storing electronic system firmware using mlc NVM

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Embodiment Construction

[0048] figure 2 is a block diagram of a storage device according to an embodiment of the present invention. figure 2 The storage device 202 in the figure 1 Similar to the storage device 102, it includes an interface 203 coupled with the host, a control circuit 204, and one or more NVM storage chips 205. The NVM memory chip 205 may be various non-volatile memories such as NAND flash memory, phase change memory (PCRAM), resistive memory (RRAM), ferroelectric memory (FeRAM). One or more NVM memory chips 205 are MLC NVM capable of storing at least 2 bits of information per memory cell.

[0049] figure 2 An embodiment of the storage device 202 with figure 1 The difference in the storage device 102 shown in is that a separate firmware memory 110 is not included, but the firmware is stored in an NVM memory chip 205 . Control circuitry 204 loads firmware from one or more NVM memory chips 205 at runtime. The control circuit 204 can be implemented in various ways of software, h...

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PUM

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Abstract

The invention provides a method and device for storing electronic system firmware through an MLC NVM. The MLC NVM comprises a firmware storage area and a super block area. The method comprises the steps that 1, the super block area is read, and information of a currently used firmware mirror image is obtained; 2, a firmware area where a first copy of the currently used firmware mirror image is located is obtained; 3, the first copy is read from the firmware area where the first copy is located; 4, if a mistake is made in the reading process, another copy of the currently used firmware mirror image is selected as the first copy, the second to fourth steps are repeated, and if the reading process succeeds, the reading process of the firmware mirror image is finished.

Description

technical field [0001] The present invention relates to electronic equipment, and more specifically, the present invention relates to a method and equipment for storing electronic system firmware using MLC (Multi Level Cell, multi-level unit) NVM (Non-Volatile Memory, non-volatile memory). Background technique [0002] Electronic devices usually have firmware for providing underlying functions of the electronic device, such as BIOS, operating system loading, and the like. Firmware is usually stored in ROM (Read Only Memory), EEPROM or flash memory. [0003] MLC NVM is a non-volatile memory capable of storing at least two bits of information in each memory cell. Compared with SLC (Single Level Cell) NVM, it has the characteristics of large storage capacity and low cost, but the reliability of storage is not as good as SLC, and data damage or loss may occur. [0004] see figure 1 , taking Solid Storage Device (SSD) as an example of electronic equipment, figure 1 A block di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/14G06F3/06
Inventor 刘福财钱立新于松海
Owner MEMBLAZE TECH BEIJING