{"id":2206,"date":"2017-12-27T14:19:10","date_gmt":"2017-12-27T06:19:10","guid":{"rendered":"http:\/\/www.51cos.com\/?p=2206"},"modified":"2017-12-27T14:19:10","modified_gmt":"2017-12-27T06:19:10","slug":"rootfsramfsinitramfsramdiskinitrdtmpfs","status":"publish","type":"post","link":"http:\/\/www.51cos.com\/?p=2206","title":{"rendered":"rootfs,ramfs(initramfs),ramdisk(initrd),tmpfs"},"content":{"rendered":"

\u5728Kernel\u542f\u52a8\u7684\u521d\u59cb\u9636\u6bb5\uff0c\u9996\u5148\u53bb\u521b\u5efa\u865a\u62df\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\uff0c\u63a5\u4e0b\u6765\u518d\u53bb\u8c03\u7528do_mount\u6765\u52a0\u8f7d\u771f\u6b63\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u5e76\u5c06\u6839\u6587\u4ef6\u7cfb\u7edf\u5207\u6362\u5230\u771f\u6b63\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u4e5f\u5373\u771f\u5b9e\u7684\u6587\u4ef6\u7cfb\u7edf\u3002\u7b3c\u7edf\u7684\u6765\u8bf4\uff0c\u865a\u62df\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\u5305\u62ec\u4e09\u79cd\u7c7b\u578b\uff0c\u5373Initramfs\u3001cpio-initrd\u548cimage-initrd\u3002<\/p>\n

Initrd\u662f\u5728Linux\u4e2d\u666e\u904d\u91c7\u7528\u7684\u4e00\u79cd\u6280\u672f\uff0c\u5c31\u662f\u7531Bootloader\u52a0\u8f7d\u7684\u5185\u5b58\u76d8\u3002\u5728\u7cfb\u7edf\u542f\u52a8\u7684\u8fc7\u7a0b\u4e2d\uff0c\u9996\u5148\u4f1a\u6267\u884cInitrd\u4e2d\u7684\u201c\u67d0\u4e00\u4e2a\u6587\u4ef6\u201d \u6765\u5b8c\u6210\u9a71\u52a8\u6a21\u5757\u52a0\u8f7d\u7684\u4efb\u52a1\uff0c\u7b2c\u4e8c\u9636\u6bb5\u624d\u4f1a\u6267\u884c\u771f\u6b63\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\u4e2d\u7684\/sbin\/init\u3002\u8fd9\u91cc\u63d0\u5230\u7684\u7b2c\u4e00\u9636\u6bb5\u662f\u4e3a\u7b2c\u4e8c\u9636\u6bb5\u670d\u52a1\u7684\uff0c\u4e3b\u8981\u662f\u7528\u6765\u52a0\u8f7d\u6839\u6587\u4ef6\u7cfb\u7edf\u4ee5\u53ca\u6839\u6587\u4ef6\u7cfb\u7edf\u5b58\u50a8\u4ecb\u8d28\u7684\u9a71\u52a8\u7a0b\u5e8f\u3002
\n\u8d44\u6599\u4e2d\u63d0\u5230\uff0c\u5b58\u5728\u591a\u79cd\u7c7b\u578b\u7684Initrd\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u5305\u62ec\u65e0Initrd\u3001Linux Kernel\u548cInitrd\u6253\u5305\u3001Linux Kernel\u548cInitrd\u5206\u79bb\u4ee5\u53caRAMDisk Initrd(\u5728\u7cfb\u7edf\u542f\u52a8\u7684\u65f6\u5019\uff0cU-Boot\u4f1a\u5c06Linux Kernel\u548cRootfs\u52a0\u8f7d\u5230\u5185\u5b58\uff0c\u5e76\u8df3\u8f6c\u5230Linux Kernel\u7684\u5165\u53e3\u5730\u5740\u6267\u884c\u7a0b\u5e8f)\u3002<\/p>\n

\u4e3a\u4ec0\u4e48\u4e0d\u76f4\u63a5\u628a\u771f\u5b9e\u7684\u6587\u4ef6\u7cfb\u7edf\u914d\u7f6e\u4e3a\u6839\u6587\u4ef6\u7cfb\u7edf\uff1f
\n\u7b54\u6848\u5f88\u7b80\u5355\uff0c\u5185\u6838\u4e2d\u6ca1\u6709\u6839\u6587\u4ef6\u7cfb\u7edf\u7684\u8bbe\u5907\u9a71\u52a8\uff0c\u5982USB\u7b49\u5b58\u653e\u6839\u6587\u4ef6\u7cfb\u7edf\u7684\u8bbe\u5907\u9a71\u52a8\uff0c\u800c\u4e14\u5373\u4fbf\u4f60\u5c06\u6839\u6587\u4ef6\u7cfb\u7edf\u7684\u8bbe\u5907\u9a71\u52a8\u7f16\u8bd1\u5230\u5185\u6838\u4e2d\uff0c\u6b64\u65f6\u5b83\u4eec\u8fd8\u5c1a\u672a\u52a0\u8f7d\uff0c\u5176\u5b9e\u6240\u6709\u7684Driver\u662f\u7531\u5728\u540e\u9762\u7684Kernel_Init\u7ebf\u7a0b\u8fdb\u884c\u52a0\u8f7d\u3002\u6240\u4ee5\u9700\u8981CPIO Initrd\u3001Initrd\u548cRAMDisk Initrd\u3002\u53e6\u5916\uff0c\u6211\u4eec\u7684Root\u8bbe\u5907\u90fd\u662f\u4ee5\u8bbe\u5907\u6587\u4ef6\u7684\u65b9\u5f0f\u6307\u5b9a\u7684\uff0c\u5982\u679c\u6ca1\u6709\u6839\u6587\u4ef6\u7cfb\u7edf\uff0c\u8bbe\u5907\u6587\u4ef6\u600e\u4e48\u53ef\u80fd\u5b58\u5728\u5462\uff1f<\/p>\n

\u4ec0\u4e48\u662f Initrd\uff1ainitrd \u7684\u82f1\u6587\u542b\u4e49\u662f bootloader initialized RAM disk\uff0c\u5c31\u662f\u7531 bootloader \u521d\u59cb\u5316\u7684\u5185\u5b58\u76d8\u3002\u5728 linux\u5185\u6838\u542f\u52a8\u524d\uff0c bootloader \u4f1a\u5c06\u5b58\u50a8\u4ecb\u8d28\u4e2d\u7684 initrd \u6587\u4ef6\u52a0\u8f7d\u5230\u5185\u5b58\uff0c\u5185\u6838\u542f\u52a8\u65f6\u4f1a\u5728\u8bbf\u95ee\u771f\u6b63\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\u524d\u5148\u8bbf\u95ee\u8be5\u5185\u5b58\u4e2d\u7684 initrd \u6587\u4ef6\u7cfb\u7edf\u3002\u5728 bootloader \u914d\u7f6e\u4e86 initrd \u7684\u60c5\u51b5\u4e0b\uff0c\u5185\u6838\u542f\u52a8\u88ab\u5206\u6210\u4e86\u4e24\u4e2a\u9636\u6bb5\uff0c\u7b2c\u4e00\u9636\u6bb5\u5148\u6267\u884c initrd \u6587\u4ef6\u7cfb\u7edf\u4e2d\u7684”\u67d0\u4e2a\u6587\u4ef6”\uff0c\u5b8c\u6210\u52a0\u8f7d\u9a71\u52a8\u6a21\u5757\u7b49\u4efb\u52a1\uff0c\u7b2c\u4e8c\u9636\u6bb5\u624d\u4f1a\u6267\u884c\u771f\u6b63\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\u4e2d\u7684 \/sbin\/init \u8fdb\u7a0b\u3002<\/p>\n

rootfs: \u4e00\u4e2a\u57fa\u4e8e\u5185\u5b58\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u662flinux\u5728\u521d\u59cb\u5316\u65f6\u52a0\u8f7d\u7684\u7b2c\u4e00\u4e2a\u6587\u4ef6\u7cfb\u7edf,\u3002<\/p>\n

initramfs: Initramfs\u662f\u5728 kernel 2.5\u4e2d\u5f15\u5165\u7684\u6280\u672f\uff0c\u5b9e\u9645\u4e0a\u5b83\u7684\u542b\u4e49\u5c31\u662f\uff1a\u5728\u5185\u6838\u955c\u50cf\u4e2d\u9644\u52a0\u4e00\u4e2acpio\u5305\uff0c\u8fd9\u4e2acpio\u5305\u4e2d\u5305\u542b\u4e86\u4e00\u4e2a\u5c0f\u578b\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u5f53\u5185\u6838\u542f\u52a8\u65f6\uff0c\u5185\u6838\u5c06\u8fd9\u4e2acpio\u5305\u89e3\u5f00\uff0c\u5e76\u4e14\u5c06\u5176\u4e2d\u5305\u542b\u7684\u6587\u4ef6\u7cfb\u7edf\u91ca\u653e\u5230rootfs\u4e2d\uff0c\u5185\u6838\u4e2d\u7684\u4e00\u90e8\u5206\u521d\u59cb\u5316\u4ee3\u7801\u4f1a\u653e\u5230\u8fd9\u4e2a\u6587\u4ef6\u7cfb\u7edf\u4e2d\uff0c\u4f5c\u4e3a\u7528\u6237\u5c42\u8fdb\u7a0b\u6765\u6267\u884c\u3002\u8fd9\u6837\u5e26\u6765\u7684\u660e\u663e\u7684\u597d\u5904\u662f\u7cbe\u7b80\u4e86\u5185\u6838\u7684\u521d\u59cb\u5316\u4ee3\u7801\uff0c\u800c\u4e14\u4f7f\u5f97\u5185\u6838\u7684\u521d\u59cb\u5316\u8fc7\u7a0b\u66f4\u5bb9\u6613\u5b9a\u5236\u3002Linux 2.6.12\u5185\u6838\u7684 initramfs\u8fd8\u6ca1\u6709\u4ec0\u4e48\u5b9e\u8d28\u6027\u7684\u4e1c\u897f\u3002
\ncpio-initrd: \u6307linux2.6\u5185\u6838\u4f7f\u7528\u7684cpio\u683c\u5f0f\u7684initrd\u3002
\nimage-initrd: \u4e13\u6307\u4f20\u7edf\u7684\u6587\u4ef6\u955c\u50cf\u683c\u5f0f\u7684initrd\u3002
\nrealfs: \u7528\u6237\u6700\u7ec8\u4f7f\u7528\u7684\u771f\u6b63\u7684\u6587\u4ef6\u7cfb\u7edf\u3002<\/p>\n

linux2.6 \u5185\u6838\u5bf9 cpio-initrd\u548c image-initrd \u8fd9\u4e24\u79cd\u683c\u5f0f\u7684 initrd \u5747\u652f\u6301\uff0c\u4f46\u5bf9\u5176\u5904\u7406\u6d41\u7a0b\u6709\u7740\u663e\u8457\u7684\u533a\u522b\uff0c\u4e0b\u9762\u5206\u522b\u4ecb\u7ecd linux2.6 \u5185\u6838\u5bf9\u8fd9\u4e24\u79cd initrd \u7684\u5904\u7406\u6d41\u7a0b\u3002
\ncpio-initrd \u7684\u5904\u7406\u6d41\u7a0b
\n1\uff0e boot loader \u628a\u5185\u6838\u4ee5\u53ca initrd \u6587\u4ef6\u52a0\u8f7d\u5230\u5185\u5b58\u7684\u7279\u5b9a\u4f4d\u7f6e\u3002
\n2\uff0e \u5185\u6838\u5224\u65adinitrd\u7684\u6587\u4ef6\u683c\u5f0f\uff0c\u5982\u679c\u662fcpio\u683c\u5f0f\u3002
\n3\uff0e \u5c06initrd\u7684\u5185\u5bb9\u91ca\u653e\u5230rootfs\u4e2d\u3002
\n4\uff0e \u6267\u884cinitrd\u4e2d\u7684\/init\u6587\u4ef6\uff0c\u6267\u884c\u5230\u8fd9\u4e00\u70b9\uff0c\u5185\u6838\u7684\u5de5\u4f5c\u5168\u90e8\u7ed3\u675f\uff0c\u5b8c\u5168\u4ea4\u7ed9\/init\u6587\u4ef6\u5904\u7406\u3002<\/p>\n

image-initrd\u7684\u5904\u7406\u6d41\u7a0b
\n1\uff0e bootloader\u628a\u5185\u6838\u4ee5\u53cainitrd\u6587\u4ef6\u52a0\u8f7d\u5230\u5185\u5b58\u7684\u7279\u5b9a\u4f4d\u7f6e
\n2\uff0e \u5185\u6838\u5224\u65adinitrd\u7684\u6587\u4ef6\u683c\u5f0f\uff0c\u5982\u679c\u4e0d\u662fcpio\u683c\u5f0f\uff0c\u5c06\u5176\u4f5c\u4e3aimage-initrd\u5904\u7406\u3002
\n3\uff0e \u5185\u6838\u5c06initrd\u7684\u5185\u5bb9\u4fdd\u5b58\u5728rootfs\u4e0b\u7684\/initrd.image\u6587\u4ef6\u4e2d\u3002
\n4\uff0e \u5185\u6838\u5c06\/initrd.image\u7684\u5185\u5bb9\u8bfb\u5165\/dev\/ram0\u8bbe\u5907\u4e2d\uff0c\u4e5f\u5c31\u662f\u8bfb\u5165\u4e86\u4e00\u4e2a\u5185\u5b58\u76d8\u4e2d\u3002
\n5\uff0e \u63a5\u7740\u5185\u6838\u4ee5\u53ef\u8bfb\u5199\u7684\u65b9\u5f0f\u628a\/dev\/ram0\u8bbe\u5907\u6302\u8f7d\u4e3a\u539f\u59cb\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\u3002
\n6\uff0e .\u5982\u679c\/dev\/ram0\u88ab\u6307\u5b9a\u4e3a\u771f\u6b63\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\uff0c\u90a3\u4e48\u5185\u6838\u8df3\u81f3\u6700\u540e\u4e00\u6b65\u6b63\u5e38\u542f\u52a8\u3002
\n7\uff0e \u6267\u884cinitrd\u4e0a\u7684\/linuxrc\u6587\u4ef6\uff0clinuxrc\u901a\u5e38\u662f\u4e00\u4e2a\u811a\u672c\u6587\u4ef6\uff0c\u8d1f\u8d23\u52a0\u8f7d\u5185\u6838\u8bbf\u95ee\u6839\u6587\u4ef6\u7cfb\u7edf\u5fc5\u987b\u7684\u9a71\u52a8\uff0c \u4ee5\u53ca\u52a0\u8f7d\u6839\u6587\u4ef6\u7cfb\u7edf\u3002
\n8\uff0e \/linuxrc\u6267\u884c\u5b8c\u6bd5\uff0c\u5e38\u89c4\u6839\u6587\u4ef6\u7cfb\u7edf\u88ab\u6302\u8f7d
\n9\uff0e \u5982\u679c\u5e38\u89c4\u6839\u6587\u4ef6\u7cfb\u7edf\u5b58\u5728\/initrd\u76ee\u5f55\uff0c\u90a3\u4e48\/dev\/ram0\u5c06\u4ece\/\u79fb\u52a8\u5230\/initrd\u3002\u5426\u5219\u5982\u679c\/initrd\u76ee\u5f55\u4e0d\u5b58\u5728\uff0c \/dev\/ram0\u5c06\u88ab\u5378\u8f7d\u3002
\n10\uff0e \u5728\u5e38\u89c4\u6839\u6587\u4ef6\u7cfb\u7edf\u4e0a\u8fdb\u884c\u6b63\u5e38\u542f\u52a8\u8fc7\u7a0b \uff0c\u6267\u884c\/sbin\/init\u3002<\/p>\n

Linux\u5185\u6838\u52a0\u8f7d\u6839\u6587\u4ef6\u7cfb\u7edf\u6267\u884c\/sbin\/init\u7a0b\u5e8f\u524d\uff0c\u9700\u8981\u627e\u5230\u6839\u8bbe\u5907\u4f4d\u7f6e\uff0c\u5982\u679c\u6839\u8bbe\u5907\u9700\u8981\u9a71\u52a8\u7684\u652f\u6301,\u5185\u6838\u6709\u53ef\u80fd\u65e0\u80fd\u4e3a\u529b\uff0c\u901a\u8fc7\u63d0\u4f9b\u4e00\u4e2a\u8fc7\u6e21\u7684\u4e34\u65f6\u6839\u6587\u4ef6\u7cfb\u7edf\u53ef\u4ee5\u4f7f\u5f97\u5185\u6838\u7684\u8bbe\u8ba1\u66f4\u7075\u6d3b\u7b80\u5355.\u901a\u5e38\u8fc7\u6e21\u7684\u4e34\u65f6\u6839\u6587\u4ef6\u7cfb\u7edf\u57fa\u672c\u4e0a\u662f\u5185\u5b58\u6587\u4ef6\u7cfb\u7edf.<\/p>\n

\u5e38\u89c1\u7684\u5185\u5b58\u6587\u4ef6\u7cfb\u7edf\u6709:<\/p>\n

rootfs,ramfs(initramfs),ramdisk(initrd),tmpfs<\/p>\n

1. rootfs:\u5185\u6838\u542f\u52a8\u7684\u521d\u59cb\u59cb\u6839\u6587\u4ef6\u7cfb\u7edf,\u5927\u90e8\u5206linux\u7cfb\u7edf\u6b63\u5e38\u8fd0\u884c\u540e\u90fd\u4f1a\u5b89\u88c5\u53e6\u5916\u7684\u6587\u4ef6\u7cfb\u7edf,\u7136\u540e\u5ffd\u7565rootfs<\/p>\n

2. ramfs:\u57fa\u4e8e\u5185\u5b58\u7684\u6587\u4ef6\u7cfb\u7edf.ramfs\u6587\u4ef6\u7cfb\u7edf\u6ca1\u6709\u5bb9\u91cf\u5927\u5c0f\u7684\u9650\u5236,\u5b83\u53ef\u4ee5\u6839\u636e\u9700\u8981\u52a8\u6001\u589e\u52a0\u5bb9\u91cf.\u76f4\u63a5\u5229\u7528\u4e86\u5185\u6838\u7684\u78c1\u76d8\u9ad8\u901f\u7f13\u5b58<\/p>\n

3. ramdisk:\u57fa\u4e8eram\u7684\u5757\u8bbe\u5907,\u5360\u636e\u4e00\u5757\u56fa\u5b9a\u7684\u5185\u5b58,\u4e8b\u5148\u8981\u4f7f\u7528\u7279\u5b9a\u7684\u5de5\u5177\u6bd4\u5982mke2fs\u683c\u5f0f\u5316,\u8fd8\u9700\u8981\u4e00\u4e2a\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u6765\u8bfb\u5199\u5176\u4e0a\u7684\u6587\u4ef6\u7a7a\u95f4\u56fa\u5b9a\u5bfc\u81f4\u5bb9\u91cf\u6709\u9650,\u8981\u60f3\u88c5\u5165\u66f4\u591a\u7684\u6587\u4ef6\u9700\u8981\u91cd\u65b0\u683c\u5f0f\u5316.Linux\u7684\u5757\u8bbe\u5907\u7f13\u51b2\u7279\u6027, ram disk\u4e0a\u7684\u6570\u636e\u88ab\u62f7\u8d1d\u5230page cache(\u5bf9\u4e8e\u6587\u4ef6\u6570\u636e)\u548cdentry cache(\u5bf9\u4e8e\u76ee\u5f55\u9879),\u5bfc\u81f4\u5185\u5b58\u6d6a\u8d39,\u5b83\u53ef\u80fd\u4e0d\u505c\u7684\u52a8\u6001\u589e\u957f\u76f4\u5230\u8017\u5c3d\u7cfb\u7edf\u7684\u5168\u90e8\u5185\u5b58,\u6240\u4ee5\u53ea\u6709root\u6216\u6388\u6743\u7528\u6237\u5141\u8bb8\u4f7f\u7528ramfs<\/p>\n

4. tmpfs:\u589e\u52a0\u4e86\u5bb9\u91cf\u5927\u5c0f\u7684\u9650\u5236 + \u5141\u8bb8\u628a\u6570\u636e\u5199\u5165\u4ea4\u6362\u5206\u533a.\u7531\u4e8e\u589e\u52a0\u4e86\u8fd9\u4e24\u4e2a\u7279\u6027,tmpfs\u5141\u8bb8\u666e\u901a\u7528\u6237\u4f7f\u7528<\/p>\n

\u8fc7\u6e21\u6839\u6587\u4ef6\u7cfb\u7edf\u673a\u5236\uff1a\u5c06\u52a0\u8f7d\u771f\u6b63\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\u9700\u8981\u7684\u8bbe\u5907\u9a71\u52a8\u3001\u5de5\u5177\u4ee5\u53ca\u521d\u59cb\u5316\u7a0b\u5e8f\u5148\u52a0\u8f7d\u5230\u5185\u5b58\u8fd0\u884c.<\/p>\n

1. initrd: initial Ramdisk
\n\/linuxrc\u6587\u4ef6,\u57fa\u4e8eramdisk\u6280\u672f,\u6587\u4ef6\u7cfb\u7edf(ext2\u7b49)\u955c\u50cf\u6587\u4ef6 \u2014\u2014\u2014\u2014> cpio\u683c\u5f0f\u955c\u50cf\u6587\u4ef6
\n\u5728\u5185\u6838\u542f\u52a8\u5b8c\u6210\u540e\u628a\u5b83\u590d\u5236\u5230\/dev\/ram\u5757\u8bbe\u5907\u4e2d, \u4f5c\u4e3a\u5185\u6838\u52a0\u8f7d\u771f\u6b63\u6839\u6587\u4ef6\u7cfb\u7edf\u7684\u8fc7\u6e21\u6839\u6587\u4ef6\u7cfb\u7edf<\/p>\n

2. initramfs: initial RAM file system
\ninit\u6587\u4ef6,cpio\u683c\u5f0f\u955c\u50cf\u6587\u4ef6
\n\u5728\u5185\u6838\u542f\u52a8\u5b8c\u6210\u540e\u628a\u5b83\u590d\u5236\u5230rootfs\u4e2d\uff0c\u4f5c\u4e3a\u5185\u6838\u521d\u59cb\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\uff0c\u5b8c\u6210\u6302\u8f7d\u7cfb\u7edf\u771f\u6b63\u7684\u6839\u6587\u4ef6\u7cfb\u7edf<\/p>\n

\n

\u5185\u6838\u6587\u4ef6\u548c\u6839\u6587\u4ef6\u7cfb\u7edf\u5728Flash \u4e2d\u7684\u653e\u7f6e\uff0c\u53ef\u4ee5\u6839\u636e\u7cfb\u7edf\u8bbe\u8ba1\u9700\u8981\u9002\u5f53\u9009\u62e9\uff1a<\/p>\n\n\n\n\n\n\n
\u6a21\u5f0f\u9009\u62e9<\/td>\n\u4f18\u70b9<\/td>\n\u7f3a\u70b9<\/td>\n<\/tr>\n
\u5185\u6838\u548c\u6839\u6587\u4ef6\u7cfb\u7edf\u653e\u5728\u56fa\u5b9a\u504f\u79fb\u5730\u5740\u5355\u5143\uff08\u5355\u72ec\u5206\u533a\uff09<\/td>\n\u9002\u7528\u4e8e\u4e3b\u8981\u7cfb\u7edf\u6210\u5458\u5730\u5740\u5355\u5143\u56fa\u5b9a\uff0c\u6613\u4e8e\u5f15\u5bfc\u7a0b\u5e8f\uff08 Bootloader\uff09\u52a0\u8f7d\u548c\u5206\u522b\u5347\u7ea7\u5185\u6838\u548c\u6839\u6587\u4ef6\u7cfb\u7edf<\/td>\n\u5728\u5185\u6838\u548c\u6839\u6587\u4ef6\u7cfb\u7edf\u4e4b\u95f4\u4e0d\u53ef\u907f\u514d\u8981\u6d6a\u8d39Flash \u7a7a\u95f4<\/td>\n<\/tr>\n
\u6839\u6587\u4ef6\u7cfb\u7edf\u7d27\u8ddf\u5185\u6838\u653e\u7f6e\uff08\u4e0d\u5355\u72ec\u5206\u533a\uff09<\/td>\n\u8282\u7701Flash \u5b58\u50a8\u7a7a\u95f4<\/td>\n\u5185\u6838\u6587\u4ef6\u548c\u6839\u6587\u4ef6\u7cfb\u7edf\u5408\u4e8c\u4e3a
\n\u4e00\uff0c\u5355\u72ec\u5347\u7ea7\u4e0d\u591f\u65b9\u4fbf<\/td>\n<\/tr>\n
\u5185\u6838\u548c\u6839\u6587\u4ef6\u7cfb\u7edf\u538b\u7f29\u653e\u7f6e<\/td>\n\u8282\u7701\u5927\u91cf\u7684Flash \u5b58\u50a8\u7a7a\u95f4\uff0c\u53ef\u9009\u62e9\u538b\u7f29\u653e\u7f6e\u5185\u6838\u6216\u6839\u6587\u4ef6\u7cfb\u7edf<\/td>\n\u7cfb\u7edf\u9700\u8981\u5f15\u5bfc\u7a0b\u5e8f\uff08Bootloader\uff09\u548cRAM \u652f\u6301<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u5982\u679c\u628a \u5185\u6838\u955c\u50cf\u653e\u5230\u6839\u6587\u4ef6\u7cfb\u7edf\u4e2d\u7684\u8bdd\uff0c\u5fc5\u987b\u8981BOOTLOAD \u652f\u6301\u76f8\u5e94\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u5426\u5219\u4e5f\u65e0\u6cd5\u8bfb\u53d6\u5e76\u52a0\u8f7d\u5185\u6838\u5230RAM\u4e2d\uff0c\u56e0\u6b64\u65e0\u6cd5\u542f\u52a8\uff0c\u57fa\u4e8e\u8fd9\u51e0\u70b9\uff0c\u56e0\u6b64\uff0c\u4e00\u822cFLASH \u7cfb\u7edf\u4e2d\u5185\u6838\u548c\u6839\u6587\u4ef6\u7cfb\u7edf\u653e\u5728\u56fa\u5b9a\u504f\u79fb\u5730\u5740\u5355\u5143\uff08\u5355\u72ec\u5206\u533a\uff09\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728Kernel\u542f\u52a8\u7684\u521d\u59cb\u9636\u6bb5\uff0c\u9996\u5148\u53bb\u521b\u5efa\u865a\u62df\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\uff0c\u63a5\u4e0b\u6765\u518d\u53bb\u8c03\u7528do_mount\u6765\u52a0\u8f7d\u771f\u6b63\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-2206","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/2206","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2206"}],"version-history":[{"count":1,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/2206\/revisions"}],"predecessor-version":[{"id":2207,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/2206\/revisions\/2207"}],"wp:attachment":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2206"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}