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Construction method, of guide memory guide memory and driving method

A construction method and memory technology, which are applied in the construction of boot memory, boot memory and drive fields, can solve the problems of chip damage, inconvenience for developers, increase maintenance cost, etc., and achieve the effect of reducing cost

Inactive Publication Date: 2005-08-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the upgrade of the BootRom on the device board must be removed on site and the chip replaced, which increases maintenance costs, and the removal and insertion of the board may affect the operation of the entire product.
In the development stage of the single board, the change of BootRom also needs to be re-fired, which may not only cause damage to the chip, but also bring inconvenience to the developer.

Method used

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  • Construction method, of guide memory guide memory and driving method
  • Construction method, of guide memory guide memory and driving method
  • Construction method, of guide memory guide memory and driving method

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Experimental program
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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] figure 1 It is a flow chart of the embodiment of the construction method of the boot memory of the present invention. according to figure 1 There are three steps to build the boot memory: Step 1, divide the BootRom into two sections according to its address range, the first section is the basic BootRom. The programs or data stored in the BootRom in this section support less functions but are stable and reliable. and data are usually written when leaving the factory, and do not need to be rewritten and upgraded later. Therefore, the basic BootRom adopts a memory that can keep the stored content for a long time and can read its content at any time when it is in the working state. This section of memory Usually fast flash memory FLASH or read-only memory ROM is used, of course, ultraviolet erasable read-only memory (EPROM) or electricall...

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Abstract

The bootstrapping memory (BootRom) is divided into two sections according to its address and used as basic BootRoom and expanded BootRoom separately. The basic BootRoom, e.g. ROM, can maintain its stored content for long time and its content may be read out in any time. The expanded BootRoom e.g. FLASH, can maintain its stored content for long time and its content may be read out and re-written it any time. The said method also includes setting validity mark of the expanded BootRoom for indicating whether the expanded BootRoom is on-line upgradable or useable. The said scheme makes it possible to upgrade, renew and maintain the content of the expanded BootRoom in relatively low cost.

Description

technical field [0001] The invention relates to a construction method of a boot memory (BootRom) on a single board device in the field of computers and communications, a boot memory and a driving method of the boot memory. Background technique [0002] In computers and communication equipment, since the necessary system booting and initialization operations need to be completed when the board is started, it is necessary to set a BootRom capable of storing the basic boot program on the board of the device, so that the programs and data stored in the chip The ability to enter into a working state immediately when the board is started makes the chip usually consist of a read-only memory (ROM). The ROM usually has the characteristic that the content cannot be changed. Generally, it needs to be erased and written with a special tool for erasing and writing. Since a special tool is required to write, when it is necessary to update the boot code of the board, it needs to Remove th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445
Inventor 付汉杰徐勇
Owner HUAWEI TECH CO LTD