{"id":17664,"date":"2026-06-10T08:45:50","date_gmt":"2026-06-10T00:45:50","guid":{"rendered":"https:\/\/ab123.xyz\/?p=17664"},"modified":"2026-06-10T08:45:50","modified_gmt":"2026-06-10T00:45:50","slug":"risc-v-%e5%ae%89%e5%85%a8%e6%89%a9%e5%b1%95-pmp-pmu-%e5%9c%a8%e5%b5%8c%e5%85%a5%e5%bc%8f-iot-%e4%b8%ad%e7%9a%84%e5%ba%94%e7%94%a8%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/ab123.xyz\/?p=17664","title":{"rendered":"RISC-V \u5b89\u5168\u6269\u5c55 (PMP\/PMU) \u5728\u5d4c\u5165\u5f0f IoT \u4e2d\u7684\u5e94\u7528\u5b9e\u8df5"},"content":{"rendered":"

\u5728\u5d4c\u5165\u5f0f IoT \u8bbe\u5907\u5b89\u5168\u9700\u6c42\u6025\u5267\u6500\u5347\u7684\u80cc\u666f\u4e0b\uff0cRISC-V \u67b6\u6784\u51ed\u501f\u5176\u5f00\u653e\u6027\u4e0e\u53ef\u5b9a\u5236\u6027\uff0c\u6b63\u6210\u4e3a\u7269\u8054\u7f51\u5b89\u5168\u90e8\u7f72\u7684\u6838\u5fc3\u9009\u62e9\u3002\u5176\u4e2d\uff0c\u7269\u7406\u5185\u5b58\u4fdd\u62a4 (PMP) \u4e0e\u6027\u80fd\u76d1\u63a7\u5355\u5143 (PMU) \u6784\u6210\u4e86 RISC-V \u5b89\u5168\u6269\u5c55\u7684\u4e24\u5927\u652f\u67f1\uff0c\u4e3a\u5f00\u53d1\u8005\u63d0\u4f9b\u4e86\u786c\u4ef6\u7ea7\u7684\u5b89\u5168\u9694\u79bb\u4e0e\u8fd0\u884c\u65f6\u76d1\u63a7\u80fd\u529b\u3002\u5b98\u65b9\u7f51\u7ad9<\/a> \u8be6\u7ec6\u5217\u51fa\u4e86\u76f8\u5173\u89c4\u8303\u4e0e\u5de5\u5177\u94fe\u652f\u6301\u3002<\/p>\n

PMP \u5b9e\u73b0\u5185\u5b58\u9694\u79bb\u4e0e\u6743\u9650\u63a7\u5236<\/h2>\n

PMP \u673a\u5236\u5141\u8bb8\u7cfb\u7edf\u8f6f\u4ef6\u5b9a\u4e49\u6700\u591a 64 \u4e2a\u7269\u7406\u5185\u5b58\u533a\u57df\uff0c\u5e76\u4e3a\u6bcf\u4e2a\u533a\u57df\u5355\u72ec\u914d\u7f6e\u8bfb\u5199\u6267\u884c\u6743\u9650\u3002\u5728\u5d4c\u5165\u5f0f IoT \u573a\u666f\u4e2d\uff0c\u5f00\u53d1\u8005\u53ef\u5c06\u5b89\u5168\u56fa\u4ef6\u3001\u5bc6\u94a5\u5b58\u50a8\u533a\u4e0e\u666e\u901a\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u7f6e\u4e8e\u4e0d\u540c\u7684 PMP \u533a\u57df\uff0c\u4ece\u800c\u9632\u6b62\u7f13\u51b2\u533a\u6ea2\u51fa\u6216\u6076\u610f\u8f6f\u4ef6\u8d8a\u6743\u8bbf\u95ee\u654f\u611f\u6570\u636e\u3002\u8be5\u529f\u80fd\u65e0\u9700\u4f9d\u8d56 MMU\uff0c\u7279\u522b\u9002\u5408\u8d44\u6e90\u53d7\u9650\u7684 MCU \u7ea7\u8bbe\u5907\u3002<\/p>\n

\u5178\u578b\u914d\u7f6e\u6d41\u7a0b<\/h3>\n
    \n
  • \u5728\u542f\u52a8\u9636\u6bb5\u7531 M \u6a21\u5f0f\u56fa\u4ef6 (\u5982 OpenSBI) \u521d\u59cb\u5316 PMP \u5bc4\u5b58\u5668<\/li>\n
  • \u4e3a\u5b89\u5168\u76d1\u63a7\u533a\u8bbe\u7f6e\u53ea\u8bfb\u6743\u9650\uff0c\u4e3a\u901a\u4fe1\u7f13\u51b2\u533a\u8bbe\u7f6e\u8bfb\u5199\u4f46\u4e0d\u53ef\u6267\u884c\u6743\u9650<\/li>\n
  • \u901a\u8fc7 trap \u673a\u5236\u6355\u83b7\u8d8a\u6743\u8bbf\u95ee\u5f02\u5e38\uff0c\u5e76\u89e6\u53d1\u5b89\u5168\u54cd\u5e94\u7b56\u7565<\/li>\n<\/ul>\n

    PMU \u5b9e\u65f6\u76d1\u63a7\u8fd0\u884c\u65f6\u884c\u4e3a<\/h2>\n

    PMU \u63d0\u4f9b\u786c\u4ef6\u8ba1\u6570\u5668\uff0c\u53ef\u8ddf\u8e2a\u6307\u4ee4\u6267\u884c\u3001\u7f13\u5b58\u547d\u4e2d\u3001\u5206\u652f\u9884\u6d4b\u7b49\u4e8b\u4ef6\u3002\u5728 IoT \u5b89\u5168\u4e2d\uff0cPMU \u88ab\u7528\u4e8e\u4fa7\u4fe1\u9053\u653b\u51fb\u68c0\u6d4b\u548c\u5f02\u5e38\u884c\u4e3a\u5206\u6790\u3002\u4f8b\u5982\uff0c\u5f53\u52a0\u5bc6\u7b97\u6cd5\u6267\u884c\u671f\u95f4\u51fa\u73b0\u975e\u9884\u671f\u7684\u6307\u4ee4\u8ba1\u6570\u6ce2\u52a8\u65f6\uff0c\u7cfb\u7edf\u53ef\u5224\u5b9a\u5b58\u5728\u65f6\u5e8f\u653b\u51fb\uff0c\u5e76\u4e3b\u52a8\u964d\u7ea7\u5bc6\u94a5\u64cd\u4f5c\u3002<\/p>\n

    \u9ad8\u7ea7\u5e94\u7528\u573a\u666f<\/h3>\n
      \n
    • \u57fa\u4e8e PMU \u8ba1\u6570\u7684\u96f6\u4fe1\u4efb\u8fd0\u884c\u65f6\u8ba4\u8bc1 (RATA)<\/li>\n
    • \u7ed3\u5408 PMP \u5b9e\u73b0\u7684\u5b89\u5168\u533a\u57df\u52a8\u6001\u5207\u6362<\/li>\n
    • \u5229\u7528 PMU \u6ea2\u51fa\u4e2d\u65ad\u89e6\u53d1\u770b\u95e8\u72d7\u91cd\u7f6e<\/li>\n<\/ul>\n

      \u5d4c\u5165\u5f0f IoT \u4e2d\u7684\u7efc\u5408\u5b9e\u8df5<\/h2>\n

      \u76ee\u524d\u5df2\u6709\u591a\u4e2a\u5f00\u6e90\u5e73\u53f0 (\u5982 Apache NuttX\u3001Zephyr) \u63d0\u4f9b PMP\/PMU \u7684 HAL \u5c42\u652f\u6301\u3002\u5f00\u53d1\u8005\u501f\u52a9 SiFive\u3001\u5e73\u5934\u54e5\u7b49\u5382\u5546\u7684 RISC-V \u82af\u7247\uff0c\u53ef\u5728\u667a\u80fd\u95e8\u9501\u3001\u5de5\u4e1a\u4f20\u611f\u5668\u3001\u533b\u7597\u53ef\u7a7f\u6234\u8bbe\u5907\u4e2d\u5feb\u901f\u90e8\u7f72\u5b89\u5168\u6269\u5c55\u3002\u5b9e\u8df5\u8868\u660e\uff0c\u4ec5\u542f\u7528 PMP \u5373\u53ef\u5c06\u5e38\u89c1\u5185\u5b58\u653b\u51fb\u7684\u9632\u5fa1\u6210\u529f\u7387\u63d0\u5347\u81f3 99.7%\uff0c\u800c\u914d\u5408 PMU \u52a8\u6001\u76d1\u63a7\u540e\uff0c\u8bbe\u5907\u5e73\u5747\u65e0\u6545\u969c\u65f6\u95f4\u5ef6\u957f 40% \u4ee5\u4e0a\u3002<\/p>\n

      \u672a\u6765\uff0c\u968f\u7740 RISC-V \u5b89\u5168\u6269\u5c55\u89c4\u8303\u7684\u6f14\u8fdb (\u5982 Smepmp\u3001Ssccfg \u6307\u4ee4)\uff0c\u5d4c\u5165\u5f0f IoT \u5c06\u83b7\u5f97\u66f4\u7ec6\u7c92\u5ea6\u7684\u7269\u7406\u5185\u5b58\u52a0\u5bc6\u4e0e\u4fe1\u4efb\u6839\u652f\u6301\u3002\u5efa\u8bae\u5f00\u53d1\u8005\u5728\u4ea7\u54c1\u8bbe\u8ba1\u521d\u671f\u4fbf\u5f15\u5165 PMP\/PMU \u539f\u5219\uff0c\u907f\u514d\u540e\u671f\u6253\u5b89\u5168\u8865\u4e01\u5e26\u6765\u7684\u6027\u80fd\u635f\u8017\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u5728\u5d4c\u5165\u5f0f IoT \u8bbe\u5907\u5b89\u5168\u9700\u6c42\u6025\u5267\u6500\u5347\u7684\u80cc\u666f\u4e0b\uff0cRISC-V \u67b6\u6784\u51ed\u501f\u5176\u5f00\u653e\u6027\u4e0e\u53ef\u5b9a\u5236\u6027\uff0c\u6b63\u6210\u4e3a\u7269\u8054\u7f51\u5b89\u5168\u90e8\u7f72 […]<\/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":[21024,21025,21022,21023,21026],"class_list":["post-17664","post","type-post","status-publish","format-standard","hentry","category-4","tag-pmp","tag-pmu","tag-risc-v","tag-iot","tag-21026"],"_links":{"self":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts\/17664","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=17664"}],"version-history":[{"count":1,"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts\/17664\/revisions"}],"predecessor-version":[{"id":17665,"href":"https:\/\/ab123.xyz\/index.php?rest_route=\/wp\/v2\/posts\/17664\/revisions\/17665"}],"wp:attachment":[{"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ab123.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}