{"id":1105,"date":"2022-05-15T20:19:01","date_gmt":"2022-05-15T12:19:01","guid":{"rendered":"https:\/\/www.zhiwanyuzhou.com\/?p=1105"},"modified":"2022-06-11T17:48:51","modified_gmt":"2022-06-11T09:48:51","slug":"u-boot%e5%91%bd%e4%bb%a4%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.zhiwanyuzhou.com\/index.php\/2022\/05\/15\/u-boot%e5%91%bd%e4%bb%a4%e7%a4%ba%e4%be%8b\/","title":{"rendered":"U-BOOT\u547d\u4ee4\u793a\u4f8b"},"content":{"rendered":"\n<p>U-boot\uff08universal bootloader\uff09\u662f\u4e00\u79cd\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u5d4c\u5165\u5f0fCPU\u7684BootLoader\u7a0b\u5e8f\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0cU-boot\u662fbootloader\u7684\u4e00\u4e2a\u5b50\u96c6\uff0cU-boot\u7684\u6838\u5fc3\u4f5c\u7528\u5c31\u662f\u542f\u52a8\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\uff0cU-boot\u7684\u672c\u8d28\u5c31\u662f\u4e00\u6bb5\u88f8\u673a\u7a0b\u5e8f\u3002U-Boot\u652f\u6301\u7684\u5904\u7406\u5668\u67b6\u6784\u5305\u62ecPowerPC\u3001ARM\u3001MIPS\u3001x86\uff0c\u5b83\u7684\u529f\u80fd\u5f3a\u5927\uff0c\u6db5\u76d6\u4e86\u7edd\u5927\u90e8\u5206\u5904\u7406\u5668\u67b6\u6784\uff0c\u63d0\u4f9b\u4e86\u5927\u91cf\u7684\u5916\u8bbe\u9a71\u52a8\uff0c\u652f\u6301\u591a\u4e2a\u6587\u4ef6\u7cfb\u7edf\uff0c\u9644\u5e26\u8c03\u8bd5\u3001\u811a\u672c\u548c\u5f15\u5bfc\u7b49\u5de5\u5177\u3002\u5e76\u4e14U-Boot\u7684\u53ef\u914d\u7f6e\u6027\u975e\u5e38\u7684\u5f3a\uff0c\u5b83\u6240\u652f\u6301\u7684\u547d\u4ee4\u4e5f\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u6765\u589e\u51cf\u3002U-Boot\u7684\u547d\u4ee4\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u7c7b\uff1a\u4fe1\u606f\u7c7b\u547d\u4ee4\u3001\u73af\u5883\u53d8\u91cf\u7c7b\u547d\u4ee4\u3001\u5b58\u50a8\u5668\u547d\u4ee4\u3001Flash\u4e13\u7528\u547d\u4ee4\u3001\u8f7d\u7c7b\u547d\u4ee4\u3001\u542f\u52a8\u547d\u4ee4\u548cCache\u547d\u4ee4\u3002<\/p>\n\n\n\n<p>\u4e0b\u9762\u6211\u4eec\u6765\u7b80\u5355\u7684\u4ecb\u7ecd\u4e00\u4e0b\u5e38\u7528\u7684\u4e00\u4e9b\u547d\u4ee4\u3002<\/p>\n\n\n\n<p>\u8fdb\u5165uboot\u547d\u4ee4\u884c\u6a21\u5f0f\u540e\u8f93\u5165\u201chelp\u201d\u6216\u201c?\u201d\uff0c\u56de\u8f66\u540e\u5373\u53ef\u67e5\u770b\u5f53\u524duboot\u6240\u652f\u6301\u7684\u547d\u4ee4\uff0c\u4f7f\u7528\u201chelp cmd\u201d\u6216\u201c? cmd\u201d\u547d\u4ee4\u8fd8\u53ef\u4ee5\u67e5\u770b\u547d\u4ee4\u7684\u5177\u4f53\u7528\u6cd5\u3002<\/p>\n\n\n\n<p>\u4e00\u3001\u73af\u5883\u53d8\u91cf\u76f8\u5173<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5e8f\u53f7<\/td><td>\u547d\u4ee4<\/td><td>\u529f\u80fd<\/td><td>\u793a\u4f8b<\/td><\/tr><tr><td>1<\/td><td>printenv<\/td><td>\u6253\u5370\u73af\u5883\u53d8\u91cf<\/td><td>printenv<\/td><\/tr><tr><td>2<\/td><td>setenv<\/td><td>\u8bbe\u7f6e\u73af\u5883\u53d8\u91cf<\/td><td># \u8bbe\u7f6e\u73af\u5883\u53d8\u91cfa\u7684\u503c\u4e3a123<br>setenv a '123'<br># \u6e05\u9664\u73af\u5883\u53d8\u91cfa<br>setenv a<\/td><\/tr><tr><td>3<\/td><td>saveenv<\/td><td>\u4fdd\u5b58\u5f53\u524d\u73af\u5883\u53d8\u91cf\u5230flash<\/td><td>saveenv<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u4e8c\u3001\u5185\u5b58\u64cd\u4f5c\u76f8\u5173<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5e8f\u53f7<\/td><td>\u547d\u4ee4<\/td><td>\u529f\u80fd<\/td><td>\u793a\u4f8b<\/td><\/tr><tr><td>1<\/td><td>md<\/td><td>\u7528\u4e8e\u663e\u793a\u5185\u5b58\u503c<\/td><td>md 0x80000000<\/td><\/tr><tr><td>2<\/td><td>nm<\/td><td>\u7528\u4e8e\u4fee\u6539\u6307\u5b9a\u5730\u5740\u7684\u5185\u5b58\u503c<\/td><td><\/td><\/tr><tr><td>3<\/td><td>mm<\/td><td>\u7528\u4e8e\u4fee\u6539\u6307\u5b9a\u5730\u5740\u7684\u5185\u5b58\u503c\uff0c\u4e0enm\u547d\u4ee4\u7684\u533a\u522b\u662f\uff0cmm\u4fee\u6539\u5185\u5b58\u503c\u65f6\u5730\u5740\u4f1a\u81ea\u589e<\/td><td><\/td><\/tr><tr><td>4<\/td><td>mw<\/td><td>\u7528\u4e8e\u4f7f\u7528\u4e00\u4e2a\u6307\u5b9a\u7684\u6570\u636e\u586b\u5145\u4e00\u6bb5\u5185\u5b58<\/td><td><\/td><\/tr><tr><td>5<\/td><td>cp<\/td><td>\u62f7\u8d1d\u547d\u4ee4\uff0c\u7528\u4e8e\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u4ece\u4e00\u6bb5\u5185\u5b58\u62f7\u8d1d\u5230\u53e6\u4e00\u6bb5\u5185\u5b58\u4e2d<\/td><td><\/td><\/tr><tr><td>6<\/td><td>cmp<\/td><td>\u6bd4\u8f83\u547d\u4ee4\uff0c\u7528\u4e8e\u6bd4\u8f83\u4e24\u6bb5\u5185\u5b58\u7684\u6570\u636e\u662f\u5426\u76f8\u7b49<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u4e09\u3001EMMC\u548cSD\u5361\u64cd\u4f5c\u547d\u4ee4<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td># \u8f93\u51faMMC\u8bbe\u5907\u4fe1\u606f<br>mmc info<br># \u8bfb\u53d6MMC\u4e2d\u76840x600\u5730\u5740\u76840x10\u4e2a\u5757\u5185\u5bb9\u5230\u5185\u5b58\u5730\u57400x90000000<br>mmc read 0x90000000 0x600 0x10<br># \u5c06\u5185\u5b58\u5730\u57400x90000000\u5411MMC\u4e2d\u5199\u5165MMC\u4e2d\u76840x600\u5730\u5740\u76840x10\u4e2a\u5757<br>mmc write 0x90000000 0x600 0x10<br># \u626b\u63cfMMC\u8bbe\u5907<br>mmc rescan<br># \u5217\u51faMMC\u8bbe\u5907\u7684\u5206\u533a<br>mmc part<br># \u5207\u6362MMC\u8bbe\u5907<br>mmc dev<br># \u5217\u51fa\u5f53\u524d\u6709\u6548\u7684\u6240\u6709MMC\u8bbe\u5907<br>mmc list<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u56db\u3001FAT\u683c\u5f0f\u6587\u4ef6\u7cfb\u7edf\u64cd\u4f5c\u547d\u4ee4<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5e8f\u53f7<\/td><td>\u547d\u4ee4<\/td><td>\u529f\u80fd<\/td><td>\u793a\u4f8b<\/td><\/tr><tr><td>1<\/td><td>fatinfo<\/td><td>\u7528\u4e8e\u67e5\u8be2\u6307\u5b9aMMC\u8bbe\u5907\u5206\u533a\u7684\u6587\u4ef6\u7cfb\u7edf\u4fe1\u606f<\/td><td><\/td><\/tr><tr><td>2<\/td><td>fatls<\/td><td>\u7528\u4e8e\u67e5\u8be2FAT\u683c\u5f0f\u8bbe\u5907\u7684\u76ee\u5f55\u548c\u6587\u4ef6\u4fe1\u606f<\/td><td><\/td><\/tr><tr><td>3<\/td><td>fstype<\/td><td>\u7528\u4e8e\u67e5\u770b\u8bbe\u5907\u67d0\u4e2a\u5206\u533a\u7684\u6587\u4ef6\u7cfb\u7edf\u683c\u5f0f<\/td><td><\/td><\/tr><tr><td>4<\/td><td>fatload<\/td><td>\u4ece\u7b2c0\u4e2a\u5b58\u50a8\u8bbe\u5907\u7684\u7b2c1\u4e2a\u5206\u533a\u7684\u6839\u76ee\u5f55\u8bfb\u51fauImage\u6587\u4ef6\u5230\u5185\u5b58\u5730\u57400x80008000<\/td><td>fatload mmc 0:1 0x80008000 uImage<\/td><\/tr><tr><td>5<\/td><td>fatwrite<\/td><td>\u628a\u5185\u5b58\u5730\u57400x80008000\u5f00\u59cb\u76840x35\u4e2a\u5b57\u8282\u6570\u636e\u5199\u5165\u5230\u7b2c0\u4e2a\u8bbe\u5907\u7684\u7b2c1\u4e2a\u5206\u533a\u91cc,\u6587\u4ef6\u540d\u4e3amy.txt<\/td><td>fatwrite mmc 0:1 0x80008000 my.txt 0x35<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u4e94\u3001NAND\u64cd\u4f5c\u547d\u4ee4<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td># \u7528\u4e8e\u6253\u5370NAND Flash\u4fe1\u606f<br>nand info<br># \u7528\u4e8e\u5207\u6362NAND Flash<br>nand device<br># \u7528\u4e8e\u64e6\u96640x100000\u8d77\u59cb\u5730\u5740\u76840x100\u5927\u5c0f\u7684\u5185\u5b58\u6570\u636e\u4e3a\u7a7a<br>nand erase 0x100000 0x100<br># \u7528\u4e8e\u5c06nand\u76840x100000\u76840x100\u5927\u5c0f\u7684\u6570\u636e\u8bfb\u53d6\u52300x80000000\u5185\u5b58\u5730\u5740<br>nand read 0x80000000 0x100000 0x100<br># \u7528\u4e8e\u5c060x80000000\u5185\u5b58\u5730\u5740\u76840x100\u5927\u5c0f\u7684\u6570\u636e\u5199\u5165nand\u76840x100000\u4e2d<br>nand write 0x80000000 0x100000 0x100<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u516d\u3001\u7f51\u7edc\u64cd\u4f5c\u547d\u4ee4<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5e8f\u53f7<\/td><td>\u547d\u4ee4<\/td><td>\u529f\u80fd<\/td><td>\u793a\u4f8b<\/td><\/tr><tr><td>1<\/td><td>ping<\/td><td>\u67e5\u770b\u7f51\u7edc\u662f\u5426\u80fd\u4f7f\u7528<\/td><td>ping 8.8.8.8<\/td><\/tr><tr><td>2<\/td><td>dhcp<\/td><td>\u7528\u4e8e\u4ece\u8def\u7531\u5668\u83b7\u53d6IP\u5730\u5740\uff0c\u524d\u63d0\u662f\u5f00\u53d1\u677f\u4e0e\u8def\u7531\u5668\u8fde\u63a5<\/td><td><\/td><\/tr><tr><td>3<\/td><td>nfs<\/td><td>\u7f51\u7edc\u6587\u4ef6\u7cfb\u7edf\uff0c\u53ef\u4ee5\u5728\u8ba1\u7b97\u673a\u4e4b\u95f4\u901a\u8fc7\u7f51\u7edc\u6765\u5206\u4eab\u8d44\u6e90<\/td><td><\/td><\/tr><tr><td>4<\/td><td>tftp<\/td><td>\u901a\u8fc7\u4f7f\u7528TFTP\u534f\u8bae\u7f51\u7edc\u4e0b\u8f7d\u6587\u4ef6\u5230\u5185\u5b58<\/td><td>tftp 80800000 zImage<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u4e03\u3001BOOT\u64cd\u4f5c\u547d\u4ee4<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5e8f\u53f7<\/td><td>\u547d\u4ee4<\/td><td>\u529f\u80fd<\/td><td>\u793a\u4f8b<\/td><\/tr><tr><td>1<\/td><td>bootz<\/td><td>\u7528\u4e8e\u542f\u52a8zImage\u955c\u50cf\u6587\u4ef6<\/td><td># \u542f\u52a8zImage\u3001dtb\u3001kernel<br>bootz 80800000 - 83000000<\/td><\/tr><tr><td>2<\/td><td>bootm<\/td><td>\u7528\u4e8e\u542f\u52a8uImage\u955c\u50cf\u6587\u4ef6<\/td><td><\/td><\/tr><tr><td>3<\/td><td>boot<\/td><td>\u7528\u4e8e\u542f\u52a8Linux\u7cfb\u7edf\u7684\uff0c\u8be5\u547d\u4ee4\u4f1a\u8bfb\u53d6\u73af\u5883\u53d8\u91cfbootcmd\u6765\u542f\u52a8Linux<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u516b\u3001\u5176\u4ed6\u547d\u4ee4<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u5e8f\u53f7<\/td><td>\u547d\u4ee4<\/td><td>\u529f\u80fd<\/td><td>\u793a\u4f8b<\/td><\/tr><tr><td>1<\/td><td>reset<\/td><td>\u91cd\u542f\u8bbe\u5907<\/td><td><\/td><\/tr><tr><td>2<\/td><td>go<\/td><td>\u8df3\u8f6c\u5230\u6307\u5b9a\u5730\u5740\u6267\u884c\u5e94\u7528<\/td><td>go 80800000<\/td><\/tr><tr><td>3<\/td><td>run<\/td><td>run\u8fd0\u884c\u73af\u5883\u53d8\u91cf\u5b9a\u4e49\u7684\u547d\u4ee4<\/td><td><\/td><\/tr><tr><td>4<\/td><td>bdinfo<\/td><td>\u67e5\u770b\u677f\u5b50\u4fe1\u606f<\/td><td><\/td><\/tr><tr><td>5<\/td><td>version<\/td><td>U-BOOT\u7248\u672c\u4fe1\u606f<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5e38\u89c1\u7684\u4e00\u4e9b\u73af\u5883\u53d8\u91cf\u793a\u4f8b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>#\u5f00\u53d1\u677fIP\u5730\u5740<br>setenv ipaddr 192.168.10.50<br>#\u5f00\u53d1\u677fMAC\u5730\u5740<br>setenv ethaddr b8:ae:1d:01:00:00<br>#\u7f51\u5173\u5730\u5740<br>setenv gatewayip 192.168.10.1<br>#\u5b50\u7f51\u63a9\u7801<br>setenv netmask 255.255.255.0<br>#\u670d\u52a1\u5668IP\u5730\u5740<br>setenv serverip 192.168.10.100<br># \u5f15\u5bfc\u547d\u4ee4\uff0c\u542f\u52a8\u7684\u65f6\u5019\u4f1a\u6267\u884c\u7684\u547d\u4ee4<br>setenv bootcmd 'tftp 80800000 zImage; tftp 83000000 boot.dtb; bootz 80800000 - 83000000'<br># uboot\u7ed9kennel\u4f20\u53c2<br>bootargs=console=ttySAC2,115200 root=\/dev\/mmcblk0p2 rw init=\/linuxrc rootfstype=ext3<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u53c2\u8003\u6587\u7ae0\uff1a<\/p>\n\n\n\n<p><a href=\"https:\/\/www.bilibili.com\/read\/cv16450222\">https:\/\/www.bilibili.com\/read\/cv16450222<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/blog.csdn.net\/kunkliu\/article\/details\/95618578\">https:\/\/blog.csdn.net\/kunkliu\/article\/details\/95618578<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/blog.csdn.net\/qixjocd12345\/article\/details\/108274276\">https:\/\/blog.csdn.net\/qixjocd12345\/article\/details\/108274276<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>U-boot\uff08universal bootloader\uff09\u662f\u4e00\u79cd\u53ef\u4ee5\u7528\u4e8e\u591a\u79cd\u5d4c\u5165\u5f0fCPU\u7684BootLoader\u7a0b\u5e8f\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0cU-boot\u662fbootloader\u7684\u4e00\u4e2a\u5b50\u96c6\uff0cU-boot\u7684\u6838\u5fc3\u4f5c\u7528\u5c31\u662f\u542f\u52a8\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":5}},"_links":{"self":[{"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/posts\/1105"}],"collection":[{"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/comments?post=1105"}],"version-history":[{"count":5,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/posts\/1105\/revisions"}],"predecessor-version":[{"id":1111,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/posts\/1105\/revisions\/1111"}],"wp:attachment":[{"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/media?parent=1105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/categories?post=1105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhiwanyuzhou.com\/index.php\/wp-json\/wp\/v2\/tags?post=1105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}