DRAM initialization method and device thereof
An initialization method and initialization technology, applied in the computer field, can solve problems such as the mobile operating system not running normally, and achieve the effect of improving the utilization rate of storage resources
Active Publication Date: 2016-04-20
SHENZHEN NETCOM ELECTRONICS CO LTD
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[0004] In view of this, the embodiment of the present invention provides a DRAM initialization method and device, aiming to solve the problem in the prior art that a DRAM with a small number of bad blocks will cause the mobile operating system to fail to run normally
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[0025] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0026] figure 1 The implementation process of the DRAM initialization method provided by the embodiment of the present invention is shown. In the embodiment of the present invention, the initialization of the DRAM refers to the initialization of the block status and capacity of the DRAM according to the configuration file during the startup process of the operating system. Size and other related ...
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The invention is applicable to the field of computer technology and provides a DRAM initialization method and a device thereof. The method comprises the following steps: address space of a DRAM is divided into N blocks, and N is an integer which is greater than 1; the DRAM undergoes bad block scanning according to the division result, and the scanning result is recorded into a preset data sheet; according to the record of the data sheet, the DRAM undergoes address remap, including: combining address continued non-bad blocks into a block region and acquiring starting address and capacity size of the block region; according to the division result, configuration files of operating system nucleus are modified so as to expand the nucleus space of receiving parameters; and the starting address and capacity size of the block region are transmitted to the nucleus so as to finish initialization of the DRAM. The address space of the DRAM undergoes remap to make an operating system normally operate on a DRAM with bad blocks. Thus, storage resource utilization rate is effectively raised.
Description
technical field [0001] The invention belongs to the technical field of computers, and in particular relates to a dynamic random access memory (Dynamic Random Access Memory, DRAM) initialization method and device. Background technique [0002] When the mobile operating system starts, in the preloader stage of its bootloader, it will initialize the memory capacity according to the configuration file, and pass the initialized address space to the Little Kernel (LittleKernel) by passing parameters. , LK) use, that is, store information such as the physical first address and capacity of the DRAM in a designated area of the DRAM, and wait for the small kernel to read and use it. [0003] Since the entire address space of the DRAM is initialized according to the configuration file, the DRAM does not allow bad blocks. If there are bad blocks in the storage array of the DRAM, it will affect the normal operation of the mobile operating system. DRAMs with bad blocks cannot be used, ...
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IPC IPC(8): G11C11/4072G11C29/44G06F9/44
CPCG06F9/4401G11C11/4072G11C29/44G11C29/88
Inventor 卢浩戴清海李志雄邓恩华吴方
Owner SHENZHEN NETCOM ELECTRONICS CO LTD