{"id":17970,"date":"2026-06-10T09:00:04","date_gmt":"2026-06-10T01:00:04","guid":{"rendered":"https:\/\/ab123.xyz\/?p=17970"},"modified":"2026-06-10T09:00:04","modified_gmt":"2026-06-10T01:00:04","slug":"risc-v-%e5%90%af%e5%8a%a8%e6%b5%81%e7%a8%8b%e8%af%a6%e8%a7%a3%ef%bc%9a%e4%bb%8e%e5%a4%8d%e4%bd%8d%e5%88%b0%e4%b8%bb%e5%87%bd%e6%95%b0%e6%89%a7%e8%a1%8c%e5%85%a8%e8%bf%87%e7%a8%8b-2","status":"publish","type":"post","link":"https:\/\/ab123.xyz\/?p=17970","title":{"rendered":"RISC-V \u542f\u52a8\u6d41\u7a0b\u8be6\u89e3\uff1a\u4ece\u590d\u4f4d\u5230\u4e3b\u51fd\u6570\u6267\u884c\u5168\u8fc7\u7a0b"},"content":{"rendered":"<p>RISC-V \u4f5c\u4e3a\u5f00\u6e90\u6307\u4ee4\u96c6\u67b6\u6784\uff0c\u5176\u542f\u52a8\u6d41\u7a0b\u5bf9\u4e8e\u5d4c\u5165\u5f0f\u5f00\u53d1\u8005\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u8be6\u7ec6\u89e3\u6790 RISC-V \u5e73\u53f0\u4ece\u590d\u4f4d\u5230\u4e3b\u51fd\u6570\u6267\u884c\u7684\u5b8c\u6574\u8fc7\u7a0b\uff0c\u5e76\u63a8\u8350\u4e00\u6b3e\u9ad8\u6548\u7684\u5f00\u53d1\u5de5\u5177 \u2014\u2014 <a href=\"https:\/\/riscv.org\" target=\"_blank\">RISC-V \u56fd\u9645\u57fa\u91d1\u4f1a\u5b98\u65b9\u7f51\u7ad9<\/a> \u63d0\u4f9b\u7684\u5b98\u65b9\u5de5\u5177\u94fe\u4e0e\u4eff\u771f\u5e73\u53f0\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u6df1\u5165\u7406\u89e3\u5e95\u5c42\u673a\u5236\u3002<\/p>\n<h2>\u590d\u4f4d\u4e0e\u786c\u4ef6\u521d\u59cb\u5316\u9636\u6bb5<\/h2>\n<p>\u7cfb\u7edf\u4e0a\u7535\u540e\uff0cCPU \u4ece\u590d\u4f4d\u5411\u91cf\u5730\u5740\uff08\u901a\u5e38\u4e3a 0x80000000 \u6216\u7531 BootROM \u51b3\u5b9a\uff09\u5f00\u59cb\u6267\u884c\u7b2c\u4e00\u6761\u6307\u4ee4\u3002\u6b64\u65f6\u5904\u7406\u5668\u5904\u4e8e\u673a\u5668\u6a21\u5f0f\uff08M-mode\uff09\uff0c\u6240\u6709\u4e2d\u65ad\u5173\u95ed\uff0c\u5185\u5b58\u5c1a\u672a\u521d\u59cb\u5316\u3002\u5173\u952e\u6b65\u9aa4\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u8bbe\u7f6e\u6808\u6307\u9488\uff08SP\uff09\u4e3a\u4e34\u65f6 SRAM \u5730\u5740<\/li>\n<li>\u914d\u7f6e\u65f6\u949f\u3001PLL \u4e0e\u5916\u90e8\u5b58\u50a8\u5668\u63a7\u5236\u5668<\/li>\n<li>\u6e05\u96f6 BSS \u6bb5\uff0c\u62f7\u8d1d\u6570\u636e\u6bb5\u5230 RAM<\/li>\n<\/ul>\n<h3>\u542f\u52a8\u4ee3\u7801\u4e0e\u9677\u9631\u5411\u91cf\u8868<\/h3>\n<p>\u542f\u52a8\u4ee3\u7801\uff08Startup.S\uff09\u4e2d\u9700\u5b9a\u4e49 mtvec \u5bc4\u5b58\u5668\u6307\u5411\u9677\u9631\u5411\u91cf\u8868\uff0c\u5e76\u8bbe\u7f6e\u673a\u5668\u6a21\u5f0f\u4e0b\u7684\u5f02\u5e38\u5904\u7406\u5165\u53e3\u3002\u968f\u540e\u901a\u8fc7 CSR \u6307\u4ee4\u914d\u7f6e mstatus \u5bc4\u5b58\u5668\u4ee5\u542f\u7528\u4e2d\u65ad\u3002<\/p>\n<h2>\u4e8c\u7ea7\u5f15\u5bfc\u7a0b\u5e8f\u4e0e\u8bbe\u5907\u6811\u4f20\u9012<\/h2>\n<p>\u5728\u590d\u6742\u7cfb\u7edf\u4e2d\uff0cBootROM \u4f1a\u52a0\u8f7d\u4e8c\u7ea7\u5f15\u5bfc\u7a0b\u5e8f\uff08\u5982 OpenSBI\u3001U-Boot SPL\uff09\u3002\u8be5\u9636\u6bb5\u4e3b\u8981\u5de5\u4f5c\uff1a<\/p>\n<ul>\n<li>\u89e3\u6790\u8bbe\u5907\u6811\uff08DTB\uff09\u4ee5\u83b7\u53d6\u5185\u5b58\u5e03\u5c40\u3001\u5916\u8bbe\u5730\u5740\u7b49\u786c\u4ef6\u4fe1\u606f<\/li>\n<li>\u521d\u59cb\u5316 DRAM \u5e76\u52a0\u8f7d\u4e3b\u5f15\u5bfc\u7a0b\u5e8f\uff08\u5982 U-Boot\uff09\u6216\u76f4\u63a5\u52a0\u8f7d\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838<\/li>\n<li>\u5207\u6362\u5230\u76d1\u7ba1\u8005\u6a21\u5f0f\uff08S-mode\uff09\u5e76\u8df3\u8f6c\u81f3\u4e0b\u4e00\u7ea7\u5165\u53e3<\/li>\n<\/ul>\n<h3>\u8bbe\u5907\u6811\u7684\u4f5c\u7528<\/h3>\n<p>\u8bbe\u5907\u6811\u4ee5\u6241\u5e73\u7ed3\u6784\u63cf\u8ff0\u975e\u53ef\u679a\u4e3e\u786c\u4ef6\uff0c\u4f7f\u5f97\u540c\u4e00\u542f\u52a8\u4ee3\u7801\u53ef\u9002\u914d\u4e0d\u540c\u786c\u4ef6\u5e73\u53f0\u3002\u5f15\u5bfc\u7a0b\u5e8f\u901a\u8fc7 libfdt \u5e93\u89e3\u6790 DTB\uff0c\u5e76\u5c06\u5176\u5730\u5740\u901a\u8fc7 a1 \u5bc4\u5b58\u5668\u4f20\u9012\u7ed9\u5185\u6838\u3002<\/p>\n<h2>\u4e3b\u51fd\u6570\u6267\u884c\u524d\u7684\u73af\u5883\u51c6\u5907<\/h2>\n<p>\u5f53\u63a7\u5236\u6743\u79fb\u4ea4\u81f3 C \u8fd0\u884c\u65f6\u73af\u5883\u65f6\uff0c\u9700\u5b8c\u6210\uff1a<\/p>\n<ul>\n<li>\u521d\u59cb\u5316\u5806\u7ba1\u7406\u5668\uff08malloc \u5b9e\u73b0\uff09<\/li>\n<li>\u8bbe\u7f6e\u5168\u5c40\u6307\u9488\uff08gp\uff09\u4ee5\u8bbf\u95ee\u5c0f\u6570\u636e\u6bb5<\/li>\n<li>\u8c03\u7528\u6784\u9020\u51fd\u6570\uff08.init_array \u6bb5\u4e2d\u7684\u51fd\u6570\u6307\u9488\uff09<\/li>\n<\/ul>\n<h3>\u6700\u7ec8\u8df3\u8f6c\u4e3b\u51fd\u6570<\/h3>\n<p>\u6807\u51c6\u5e93\u4e2d\u7684 __libc_init \u6216 crt0 \u4ee3\u7801\u4f1a\u8c03\u7528 main(argc, argv)\u3002\u5bf9\u4e8e\u88f8\u673a\u73af\u5883\uff0cargc \u4e0e argv \u901a\u5e38\u4e3a 0\/NULL\uff0c\u4e3b\u51fd\u6570\u4ece\u6b64\u5f00\u59cb\u7528\u6237\u4e1a\u52a1\u903b\u8f91\u3002\u6574\u4e2a\u8fc7\u7a0b\u7ed3\u5408\u8c03\u8bd5\u5de5\u5177\uff08\u5982 QEMU\u3001Spike \u6a21\u62df\u5668\uff09\u53ef\u9010\u6307\u4ee4\u89c2\u5bdf\u5bc4\u5b58\u5668\u4e0e\u5185\u5b58\u53d8\u5316\u3002<\/p>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u6d41\u7a0b\u5206\u6790\uff0c\u5f00\u53d1\u8005\u53ef\u7cbe\u51c6\u5b9a\u4f4d\u542f\u52a8\u6545\u969c\uff08\u5982\u5806\u6808\u6ea2\u51fa\u3001\u65f6\u949f\u914d\u7f6e\u9519\u8bef\uff09\u3002\u4f7f\u7528\u5b98\u65b9\u5de5\u5177\u94fe\u914d\u5408 GDB \u8c03\u8bd5\uff0c\u80fd\u5927\u5e45\u63d0\u5347\u5f00\u53d1\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>RISC-V \u4f5c\u4e3a\u5f00\u6e90\u6307\u4ee4\u96c6\u67b6\u6784\uff0c\u5176\u542f\u52a8\u6d41\u7a0b\u5bf9\u4e8e\u5d4c\u5165\u5f0f\u5f00\u53d1\u8005\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u8be6\u7ec6\u89e3\u6790 RISC-V \u5e73\u53f0\u4ece\u590d\u4f4d\u5230 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[21336,21337,21331,20859,21338],"class_list":["post-17970","post","type-post","status-publish","format-standard","hentry","category-4","tag-bootrom","tag-opensbi","tag-risc-v","tag-20859","tag-21338"],"_links":{"self":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts\/17970","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17970"}],"version-history":[{"count":1,"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts\/17970\/revisions"}],"predecessor-version":[{"id":17972,"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts\/17970\/revisions\/17972"}],"wp:attachment":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}