加入收藏 | 设为首页 | 会员中心 | 我要投稿 李大同 (https://www.lidatong.com.cn/)- 科技、建站、经验、云计算、5G、大数据,站长网!
当前位置: 首页 > 百科 > 正文

U-Boot操作Flash (NOR, NAND & SPI)

发布时间:2020-12-15 17:29:13 所属栏目:百科 来源:网络整理
导读:http://www.linuxidc.com/Linux/2011-08/41273.htm U-Boot操作Flash (NOR,NAND SPI) [日期:2011-08-22] 来源:Linux社区 ?作者:ecbtnrt U-Boot中操作三种flash的命令集: Action NOR NAND SPI Copy Flash to RAM cp.[bwl] nand read eeprom read Write to

http://www.linuxidc.com/Linux/2011-08/41273.htm

U-Boot操作Flash (NOR,NAND & SPI)


[日期:2011-08-22] 来源:Linux社区 ?作者:ecbtnrt

U-Boot中操作三种flash的命令集:

Action NOR NAND SPI
Copy Flash to RAM cp.[bwl] nand read eeprom read
Write to Flash from RAM nand write eeprom write
Dump Flash md.[bwl] nand dump eeprom read ; md.[bwl]
Ease Flash erase nand erase n/a
Write Protection protect on
protect off
nand lock
nand unlock
Additional Info flinfo
imls
nand info
nand bad
n/a

U-Boot源代码下载地址?http://www.linuxidc.com/Linux/2011-07/38897.htm

U-Boot中查看命令帮助:

  1. MB680>?help?cp??
  2. MB680>?help?nand??
  3. MB680>?help?eeprom??

nor烧写命令:

  1. MB680>?nfs?$load_addr?/export/u-boot.bin??
  2. MB680>?protect?off?1:0-4??
  3. MB680>?erase?1:0-4??
  4. MB680>?cp.b?$load_addr?A0000000?$filesize??
  5. MB680>?protect?on?1:0-4??
nor烧写内置命令:
  1. MB680>?nfs?$load_addr?/export/u-boot.bin??
  2. MB680>?run?unprot??
  3. MB680>?run?update??

nand烧写命令:

  1. MB680>?nfs?$load_addr?/export/u-boot.bin??
  2. MB680>?nand?erase?0?40000??
  3. MB680>?nand?write?$load_addr?0?40000??

U-Boot启动内核的时候使用的命令是nand read.i c0008000 80000 500000;bootm c0008000

在nand中0x80000处开始的5M的数据拷到sdram0xc0008000处,从这个地址开始执行。

spi烧写命令:

  1. MB680>?nfs?$load_addr?/export/u-boot.bin??
  2. MB680>?eeprom?write?$load_addr?0?$filesize ?

(编辑:李大同)

【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容!

    推荐文章
      热点阅读