{"id":51973,"date":"2024-12-03T09:08:49","date_gmt":"2024-12-03T01:08:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51973\/"},"modified":"2024-12-03T09:08:49","modified_gmt":"2024-12-03T01:08:49","slug":"linux-mtd%e8%a1%a8%e7%a4%ba%e7%9a%84%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51973\/","title":{"rendered":"linux mtd\u8868\u793a\u7684\u662f\u4ec0\u4e48"},"content":{"rendered":"

<\/b> <\/p>\n

linux mtd\u8868\u793a\u7684\u662f\u4ec0\u4e48<\/h1>\n

\u6587\u7ae0\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300alinux mtd\u8868\u793a\u7684\u662f\u4ec0\u4e48\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

<\/p>\n<\/p>\n

\n

MTD\u662fLinux\u5185\u6838\u63d0\u4f9b\u7684\u4e00\u79cd\u5b58\u50a8\u5668\u5b50\u7cfb\u7edf\uff0c\u662f\u4e13\u95e8\u7528\u4e8e\u5d4c\u5165\u5f0f\u8bbe\u5907\u4e0a\u7684\u5b58\u50a8\u5668\u5b50\u7cfb\u7edf\uff0c\u5b83\u53ef\u4ee5\u8ba9\u7528\u6237\u5728\u7528\u6237\u7a7a\u95f4\u4e2d\u50cf\u8bfb\u5199\u666e\u901a\u6587\u4ef6\u4e00\u6837\u8bfb\u5199Flash\u8bbe\u5907\u3002MTD\u662f\u57fa\u4e8ePage\u7684\uff0c\u5373\u6bcf\u6b21\u8bfb\u5199\u90fd\u662f\u4ee5Page\u4e3a\u5355\u4f4d\u8fdb\u884c\u7684\uff1bMTD\u652f\u6301\u591a\u79cdFlash\u7c7b\u578b\uff0c\u5305\u62ecNOR Flash\u548cNAND Flash\u7b49\u3002<\/p>\n<\/blockquote>\n

1\u3001MTD\u6982\u8ff0<\/strong><\/p>\n

MTD\u662fLinux\u5185\u6838\u63d0\u4f9b\u7684\u4e00\u79cd\u5b58\u50a8\u5668\u5b50\u7cfb\u7edf\uff0c\u5b83\u53ef\u4ee5\u8ba9\u7528\u6237\u5728\u7528\u6237\u7a7a\u95f4\u4e2d\u50cf\u8bfb\u5199\u666e\u901a\u6587\u4ef6\u4e00\u6837\u8bfb\u5199Flash\u8bbe\u5907\u3002\u548c\u4f20\u7edf\u7684\u5757\u8bbe\u5907\u4e0d\u540c\uff0cMTD\u662f\u57fa\u4e8ePage\u7684\uff0c\u5373\u6bcf\u6b21\u8bfb\u5199\u90fd\u662f\u4ee5Page\u4e3a\u5355\u4f4d\u8fdb\u884c\u7684\u3002MTD\u652f\u6301\u591a\u79cdFlash\u7c7b\u578b\uff0c\u5305\u62ecNOR Flash\u548cNAND Flash\u7b49\u3002<\/p>\n

2\u3001MTD\u9a71\u52a8<\/strong><\/p>\n

MTD\u9a71\u52a8\u662f\u8fde\u63a5\u786c\u4ef6\u548c\u8f6f\u4ef6\u7684\u6865\u6881\uff0c\u5b83\u8d1f\u8d23\u5c06\u786c\u4ef6\u62bd\u8c61\u6210\u9002\u5408\u4e8eLinux\u5185\u6838\u4f7f\u7528\u7684\u63a5\u53e3\u3002MTD\u9a71\u52a8\u5206\u4e3a\u4e24\u79cd\u7c7b\u578b\uff1a\u5e95\u5c42\u9a71\u52a8\u548c\u4e0a\u5c42\u9a71\u52a8\u3002\u5e95\u5c42\u9a71\u52a8\u8d1f\u8d23\u4e0e\u786c\u4ef6\u901a\u4fe1\uff0c\u4e0a\u5c42\u9a71\u52a8\u5219\u8d1f\u8d23\u63d0\u4f9b\u6587\u4ef6\u7cfb\u7edf\u63a5\u53e3\u3002<\/p>\n

3\u3001MTD\u5206\u533a<\/strong><\/p>\n

MTD\u5206\u533a\u662f\u5c06Flash\u8bbe\u5907\u5212\u5206\u6210\u591a\u4e2a\u903b\u8f91\u5757\uff0c\u6bcf\u4e2a\u903b\u8f91\u5757\u53ef\u4ee5\u5355\u72ec\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4e00\u4e2a\u7269\u7406\u5757\u88ab\u5212\u5206\u6210\u591a\u4e2a\u903b\u8f91\u5757\uff0c\u6bcf\u4e2a\u903b\u8f91\u5757\u5bf9\u5e94\u4e00\u4e2a\u865a\u62df\u5730\u5740\u3002\u5728Linux\u5185\u6838\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7mtd_partitions\u7ed3\u6784\u4f53\u6765\u5b9a\u4e49MTD\u5206\u533a\u3002<\/p>\n

4\u3001MTD\u6587\u4ef6\u7cfb\u7edf<\/strong><\/p>\n

\"linux<\/p>\n

\u5728Linux\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528JFFS2\u3001UBIFS\u7b49\u6587\u4ef6\u7cfb\u7edf\u6765\u7ba1\u7406MTD\u8bbe\u5907\u4e2d\u7684\u6570\u636e\u3002\u8fd9\u4e9b\u6587\u4ef6\u7cfb\u7edf\u53ef\u4ee5\u76f4\u63a5\u5728Flash\u8bbe\u5907\u4e0a\u8fdb\u884c\u64cd\u4f5c\uff0c\u5e76\u4e14\u652f\u6301\u538b\u7f29\u3001\u788e\u7247\u6574\u7406\u7b49\u529f\u80fd\u3002<\/p>\n

5\u3001 MTD\u5de5\u5177<\/p>\n

Linux\u5185\u6838\u63d0\u4f9b\u4e86\u591a\u4e2a\u5de5\u5177\u6765\u5bf9MTD\u8bbe\u5907\u8fdb\u884c\u7ba1\u7406\u548c\u6d4b\u8bd5\u3002\u5176\u4e2d\u5305\u62ecnanddump\u3001nandwrite\u3001flashcp\u7b49\u5de5\u5177linux \u7528\u6237\u7a7a\u95f4 mtd\uff0c\u53ef\u4ee5\u7528\u4e8e\u8bfb\u53d6\u3001\u5199\u5165Flash\u8bbe\u5907\u4e2d\u7684\u6570\u636e\uff1bmtd_debug\u3001mtdinfo\u7b49\u5de5\u5177\u5219\u53ef\u4ee5\u7528\u4e8e\u8c03\u8bd5\u548c\u67e5\u770bMTD\u8bbe\u5907\u4fe1\u606f\u3002<\/p>\n

6\u3001MTD\u5e94\u7528\u6848\u4f8b<\/p>\n

\u76ee\u524d\uff0c\u5728\u5f88\u591a\u5d4c\u5165\u5f0f\u8bbe\u5907\u4e0a\u90fd\u4f7f\u7528\u4e86MTD\u5b58\u50a8\u5668\u5b50\u7cfb\u7edf\u3002\u6bd4\u5982\u8bf4\u8def\u7531\u5668\u3001\u65e0\u7ebf\u7535\u89c6\u76d2\u5b50\u3001\u667a\u80fd\u5bb6\u5c45\u7b49\u7b49\u3002\u5728\u8fd9\u4e9b\u8bbe\u5907\u4e0a\uff0cMTD\u5b58\u50a8\u5668\u5b50\u7cfb\u7edf\u88ab\u5e7f\u6cdb\u5730\u5e94\u7528\u4e8e\u56fa\u4ef6\u66f4\u65b0\u3001\u914d\u7f6e\u5b58\u50a8\u548c\u65e5\u5fd7\u8bb0\u5f55\u7b49\u65b9\u9762\u3002<\/p>\n

7\u3001MTD\u7814\u7a76\u8fdb\u5c55<\/p>\n

\u8fd1\u5e74\u6765\uff0c\u5728MTD\u5b58\u50a8\u5668\u5b50\u7cfb\u7edf\u65b9\u9762\u4e5f\u6709\u5f88\u591a\u65b0\u8fdb\u5c55\u3002\u6bd4\u5982\u8bf4UBI\uff08Unsorted Block Images\uff09\u5c31\u662f\u4e00\u79cd\u65b0\u578b\u7684\u95ea\u5b58\u7ba1\u7406\u65b9\u5f0f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u95ea\u5b58\u5bff\u547d\u548c\u53ef\u9760\u6027\uff1b\u53e6\u5916\u8fd8\u6709FTL\uff08Flash Translation Layer\uff09\u6280\u672f\u4e5f\u88ab\u5e7f\u6cdb\u5730\u5e94\u7528\u4e8e\u95ea\u5b58\u63a7\u5236\u5668\u4e2d\u3002<\/p>\n

\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300alinux mtd\u8868\u793a\u7684\u662f\u4ec0\u4e48\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

linux mtd\u8868\u793a\u7684\u662f\u4ec0\u4e48 \u6587\u7ae0\u5c0f\u767d\u4e00\u679a\uff0c\u6b63\u5728\u4e0d\u65ad\u5b66\u4e60\u79ef\u7d2f\u77e5\u8bc6\uff0c\u73b0\u5c06\u5b66\u4e60\u5230\u7684\u77e5\u8bc6\u8bb0\u5f55\u4e00\u4e0b\uff0c\u4e5f\u662f\u5c06\u6211\u7684\u6240\u5f97\u5206\u4eab\u7ed9\u5927\u5bb6\uff01\u800c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u300alinux mtd\u8868\u793a\u7684\u662f\u4ec0\u4e48\u300b\u5e26\u5927\u5bb6\u6765\u4e86\u89e3\u4e00\u4e0b##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01 MTD\u662fLinux\u5185\u6838\u63d0\u4f9b\u7684\u4e00\u79cd\u5b58\u50a8\u5668\u5b50\u7cfb\u7edf\uff0c\u662f\u4e13\u95e8\u7528\u4e8e\u5d4c\u5165\u5f0f\u8bbe\u5907\u4e0a\u7684\u5b58\u50a8\u5668\u5b50\u7cfb\u7edf\uff0c\u5b83\u53ef\u4ee5\u8ba9\u7528\u6237\u5728\u7528\u6237\u7a7a\u95f4\u4e2d\u50cf\u8bfb\u5199\u666e\u901a\u6587\u4ef6\u4e00\u6837\u8bfb\u5199Flash\u8bbe\u5907\u3002MTD\u662f\u57fa\u4e8ePage\u7684\uff0c\u5373\u6bcf\u6b21\u8bfb\u5199\u90fd\u662f\u4ee5Page\u4e3a\u5355\u4f4d\u8fdb\u884c\u7684\uff1bMTD\u652f\u6301\u591a\u79cdFlash\u7c7b\u578b\uff0c\u5305\u62ecNOR Flash\u548cNAND Flash\u7b49\u3002 1\u3001MTD\u6982\u8ff0 MTD\u662fLinux\u5185\u6838\u63d0\u4f9b\u7684\u4e00\u79cd\u5b58\u50a8\u5668\u5b50\u7cfb\u7edf\uff0c\u5b83\u53ef\u4ee5\u8ba9\u7528\u6237\u5728\u7528\u6237\u7a7a\u95f4\u4e2d\u50cf\u8bfb\u5199\u666e\u901a\u6587\u4ef6\u4e00\u6837\u8bfb\u5199Flash\u8bbe\u5907\u3002\u548c\u4f20\u7edf\u7684\u5757\u8bbe\u5907\u4e0d\u540c\uff0cMTD\u662f\u57fa\u4e8ePage\u7684\uff0c\u5373\u6bcf\u6b21\u8bfb\u5199\u90fd\u662f\u4ee5Page\u4e3a\u5355\u4f4d\u8fdb\u884c\u7684\u3002MTD\u652f\u6301\u591a\u79cdFlash\u7c7b\u578b\uff0c\u5305\u62ecNOR Flash\u548cNAND Flash\u7b49\u3002 2\u3001MTD\u9a71\u52a8 MTD\u9a71\u52a8\u662f\u8fde\u63a5\u786c\u4ef6\u548c\u8f6f\u4ef6\u7684\u6865\u6881\uff0c\u5b83\u8d1f\u8d23\u5c06\u786c\u4ef6\u62bd\u8c61\u6210\u9002\u5408\u4e8eLinux\u5185\u6838\u4f7f\u7528\u7684\u63a5\u53e3\u3002MTD\u9a71\u52a8\u5206\u4e3a\u4e24\u79cd\u7c7b\u578b\uff1a\u5e95\u5c42\u9a71\u52a8\u548c\u4e0a\u5c42\u9a71\u52a8\u3002\u5e95\u5c42\u9a71\u52a8\u8d1f\u8d23\u4e0e\u786c\u4ef6\u901a\u4fe1\uff0c\u4e0a\u5c42\u9a71\u52a8\u5219\u8d1f\u8d23\u63d0\u4f9b\u6587\u4ef6\u7cfb\u7edf\u63a5\u53e3\u3002 3\u3001MTD\u5206\u533a MTD\u5206\u533a\u662f\u5c06Flash\u8bbe\u5907\u5212\u5206\u6210\u591a\u4e2a\u903b\u8f91\u5757\uff0c\u6bcf\u4e2a\u903b\u8f91\u5757\u53ef\u4ee5\u5355\u72ec\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4e00\u4e2a\u7269\u7406\u5757\u88ab\u5212\u5206\u6210\u591a\u4e2a\u903b\u8f91\u5757\uff0c\u6bcf\u4e2a\u903b\u8f91\u5757\u5bf9\u5e94\u4e00\u4e2a\u865a\u62df\u5730\u5740\u3002\u5728Linux\u5185\u6838\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7mtd_partitions\u7ed3\u6784\u4f53\u6765\u5b9a\u4e49MTD\u5206\u533a\u3002 4\u3001MTD\u6587\u4ef6\u7cfb\u7edf \u5728Linux\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528JFFS2\u3001UBIFS\u7b49\u6587\u4ef6\u7cfb\u7edf\u6765\u7ba1\u7406MTD\u8bbe\u5907\u4e2d\u7684\u6570\u636e\u3002\u8fd9\u4e9b\u6587\u4ef6\u7cfb\u7edf\u53ef\u4ee5\u76f4\u63a5\u5728Flash\u8bbe\u5907\u4e0a\u8fdb\u884c\u64cd\u4f5c\uff0c\u5e76\u4e14\u652f\u6301\u538b\u7f29\u3001\u788e\u7247\u6574\u7406\u7b49\u529f\u80fd\u3002 5\u3001 MTD\u5de5\u5177 Linux\u5185\u6838\u63d0\u4f9b\u4e86\u591a\u4e2a\u5de5\u5177\u6765\u5bf9MTD\u8bbe\u5907\u8fdb\u884c\u7ba1\u7406\u548c\u6d4b\u8bd5\u3002\u5176\u4e2d\u5305\u62ecnanddump\u3001nandwrite\u3001flashcp\u7b49\u5de5\u5177linux \u7528\u6237\u7a7a\u95f4 mtd\uff0c\u53ef\u4ee5\u7528\u4e8e\u8bfb\u53d6\u3001\u5199\u5165Flash\u8bbe\u5907\u4e2d\u7684\u6570\u636e\uff1bmtd_debug\u3001mtdinfo\u7b49\u5de5\u5177\u5219\u53ef\u4ee5\u7528\u4e8e\u8c03\u8bd5\u548c\u67e5\u770bMTD\u8bbe\u5907\u4fe1\u606f\u3002 6\u3001MTD\u5e94\u7528\u6848\u4f8b 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