{"id":246,"date":"2024-12-30T09:10:08","date_gmt":"2024-12-30T01:10:08","guid":{"rendered":"https:\/\/www.yewpo.top\/?p=246"},"modified":"2024-12-30T09:10:08","modified_gmt":"2024-12-30T01:10:08","slug":"rmm-%e4%bb%a3%e7%a0%81%e5%88%9d%e6%ad%a5%e9%98%85%e8%af%bb","status":"publish","type":"post","link":"https:\/\/www.yewpo.top\/index.php\/246\/","title":{"rendered":"Linaro RMM \u4ee3\u7801\u521d\u6b65\u9605\u8bfb"},"content":{"rendered":"
\n

RMM\uff0c\u5373 Realm \u7ba1\u7406\u76d1\u89c6\u5668\u3002\u7ba1\u7406 Realm \u673a\u5bc6\u865a\u62df\u673a\uff0c\u540c\u65f6\u505a\u4e3a\u4e86\u673a\u5bc6\u865a\u62df\u673a\u548c\u865a\u62df\u673a\u7ba1\u7406\u8005\u4e4b\u95f4\u6c9f\u901a\u7684\u6865\u6881\u3002<\/p>\n<\/blockquote>\n

\n

RMM \u4ee3\u7801\u83b7\u53d6\u65b9\u6cd5\uff1a<\/p>\n

mkdir cca-v4\ncd cca-v4\nrepo init -u https:\/\/git.codelinaro.org\/linaro\/dcap\/op-tee-4.2.0\/manifest.git -b cca\/v4 -m sbsa_cca.xml\nrepo sync -j8 --no-clone-bundle\n<\/code><\/pre>\n<\/blockquote>\n
RMM \u4ee3\u7801\u6846\u67b6<\/h2>\n
\u5728 cca-v4<\/code> \u7684\u6839\u76ee\u5f55\u4e0b\uff0c\u53ef\u4ee5\u770b\u5230 rmm<\/code> \u76ee\u5f55\uff0c\u4e3a RMM<\/code> \u9879\u76ee\u7684\u4e3b\u76ee\u5f55\u3002\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n
|- cmake\n|- configs\n|- docs\n|- drivers\n|- ext\n|- lib\n|- plat\n|- runtime\n|- toolchain\n|- tools\n<\/code><\/pre>\n
lib<\/code> \u6587\u4ef6\u5939\u4e2d\u6709\u76f8\u5173\u7684\u5e93\u529f\u80fd\u5b9e\u73b0\uff0c\u4f8b\u5982 GIC<\/code> \u7684\u5b9e\u73b0\u3002runtime<\/code> \u6587\u4ef6\u5939\u4e2d\u5c31\u662f RMM<\/code> \u7684\u8fd0\u884c\u65f6\u4ee3\u7801\u3002\u6211\u4eec\u518d\u770b\u770b runtime<\/code> \u6587\u4ef6\u76ee\u5f55\uff1a<\/p>\n
|- core\n|- include\n|- rmi\n|- rsi\n|- tests\n<\/code><\/pre>\n
    \n
  • core<\/code>\uff1a\u4e00\u4e9b\u2026\u2026<\/li>\n
  • include<\/code>\uff1a\u76f8\u5173\u5934\u6587\u4ef6<\/li>\n
  • rmi<\/code>\uff1armi<\/code> \u63a5\u53e3\u76f8\u5173\u4ee3\u7801\u7684\u5b9e\u73b0<\/li>\n
  • rsi<\/code>\uff1arsi<\/code>  \u63a5\u53e3\u76f8\u5173\u4ee3\u7801\u7684\u5b9e\u73b0<\/li>\n
  • tests<\/code>\uff1a\u4e00\u4e9b\u6d4b\u8bd5\u6587\u4ef6<\/li>\n<\/ul>\n
    \u6211\u4eec\u91cd\u70b9\u5173\u6ce8 core<\/code> \/ rmi<\/code> \/ rsi<\/code> \u6587\u4ef6\u5939\u4e2d\u7684\u4ee3\u7801\u3002<\/p>\n
    REC_ENTER<\/h2>\n
    \u4ece\u975e\u5b89\u5168\u73af\u5883 (NS) \u4e2d\u8fdb\u5165 Realm\uff0c\u9700\u8981\u8c03\u7528 RMI_REC_ENTER<\/code>\u3002\u641c\u7d22 REC_ENTER<\/code> \u5173\u952e\u5b57\uff0c\u5f97\u5230\u4e86\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n
    \"Pasted<\/div><\/p>\n
    \u7b2c\u4e00\u6761\u641c\u7d22\u5185\u5bb9\u5c31\u5f88\u6709\u610f\u4e49\u3002\u6211\u4eec\u5728 core\/handler.c<\/code> \u4ee3\u7801\u4e2d\u627e\u5230\u4e86 smc_handler<\/code> \u7ed3\u6784\u4f53\u3002\u8be5\u7ed3\u6784\u4f53\u5b9a\u4e49\u4e86\u7edd\u5927\u591a\u6570 RMI<\/code> \u63a5\u53e3\u529f\u80fd\u7684\u5904\u7406\u51fd\u6570\u3002REC_ENTER<\/code> \u7684\u5904\u7406\u51fd\u6570\u662f smc_rec_enter<\/code>\u3002<\/p>\n
    \u5728 rmi\/run.c<\/code> \u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u627e\u5230\u4e86 smc_rec_enter<\/code> \u7684\u539f\u578b\u3002\u8be5\u51fd\u6570\u4f53\u73b0\u51fa\u4e86  REC<\/code> \u8fdb\u5165\u548c\u9000\u51fa\u7684\u4e00\u4e2a\u5b8c\u6574\u5468\u671f\uff1a<\/p>\n
      \n
    • \u6e05\u7a7a  RecExit<\/code> \u7ed3\u6784\u4f53\u3002<\/li>\n
    • \u83b7\u53d6 RecEnter<\/code> \u4e2d\u7684\u4fe1\u606f\u3002<\/li>\n
    • \u68c0\u67e5 Realm \u7684\u72b6\u6001\u3002<\/li>\n
    • \u68c0\u67e5 GIC \u7684\u72b6\u6001\uff0c\u5e76\u5c06 GIC \u7684\u72b6\u6001\u62f7\u8d1d\u5230 RecEnter<\/code> \u4e2d\u3002<\/li>\n
    • \u68c0\u67e5\u4e4b\u524d\u7684\u5904\u7406\u5f02\u5e38\u65f6\u6a21\u62df\u7684\u7ed3\u679c\u3002<\/li>\n
    • \u8c03\u7528 rec_run_loop<\/code> \u51fd\u6570\u3002<\/li>\n
    • \u6b64\u65f6 REC \u5df2\u7ecf\u9000\u51fa\uff0c\u5c06 GIC \u4fe1\u606f\u62f7\u8d1d\u5230 RecExit<\/code> \u4e2d\u3002<\/li>\n<\/ul>\n
      rec_run_loop<\/code> \u662f\u4e00\u4e2a\u5173\u952e\u70b9\u3002\u5728\u6b64\u4e4b\u524d\uff0c\u662f\u5728\u68c0\u67e5\u8fdb\u5165 REC<\/code> \u524d\u7684\u76f8\u5173\u6761\u4ef6\u662f\u5426\u7b26\u5408\u8981\u6c42\uff1b\u5728\u6b64\u4e4b\u540e\uff0c\u5c31\u662f\u4fdd\u5b58 GIC \u7684\u76f8\u5173\u4fe1\u606f\u3002\u6211\u4eec\u518d core\/run.c<\/code> \u6587\u4ef6\u4e2d\u627e\u5230\u4e86 rec_run_loop<\/code> \u7684\u539f\u578b\u3002\u8be5\u51fd\u6570\u6d89\u53ca\u5230 REC \u4e0a\u4e0b\u6587\u76f8\u5173\u7684\u5904\u7406\uff1a<\/p>\n
        \n
      • \n
        \u4fdd\u5b58 NS \u7684\u4e0a\u4e0b\u6587\u3002<\/p>\n<\/li>\n
      • \n
        \u6062\u590d Realm \u7684\u4e0a\u4e0b\u6587\u3002<\/p>\n<\/li>\n
      • \n
        \u8fdb\u884c\u4e00\u4e9b attest \u76f8\u5173\u64cd\u4f5c\u3002<\/p>\n<\/li>\n
      • \n
        \u8fdb\u5165\u4e00\u4e2a\u5faa\u73af\u4f53\u3002<\/p>\n
          \n
        • \u68c0\u67e5\u65f6\u949f\u72b6\u6001\u3002\u5982\u679c\u8ba1\u65f6\u5668\u65f6\u95f4\u8fbe\u5230\uff0c\u5c31\u76f4\u63a5\u9000\u51fa\u5faa\u73af\u4f53\u3002<\/li>\n
        • \u6fc0\u6d3b REC \u76f8\u5173\u4e8b\u4ef6\u3002<\/li>\n
        • \u4fdd\u5b58 RMM \u7684 cptr_el2<\/code> \u5bc4\u5b58\u5668\uff0c\u6062\u590d Realm \u7684 cptr_el2<\/code> \u5bc4\u5b58\u5668\u3002<\/li>\n
        • \u6062\u590d Realm \u7684\u5bc6\u94a5\u3002<\/li>\n
        • \u8c03\u7528 run_realm<\/code>\uff0c\u53c2\u6570\u662f REC \u7684\u901a\u7528\u5bc4\u5b58\u5668\u5806\u3002<\/li>\n
        • \u4fdd\u5b58 Realm \u7684\u5bc6\u94a5\u3002<\/li>\n
        • \u6062\u590d RMM \u7684\u5bc6\u94a5\u3002<\/li>\n
        • \u4fdd\u5b58 Realm \u7684 cptr_el2<\/code> \u5bc4\u5b58\u5668\uff0c\u6062\u590d RMM \u7684 cptr_el2<\/code> \u5bc4\u5b58\u5668\u3002<\/li>\n
        • \u68c0\u67e5 Realm \u9000\u51fa\u7684\u539f\u56e0\uff0c\u51b3\u5b9a\u662f\u5426\u7ee7\u7eed\u6267\u884c\u5faa\u73af\u4f53\u3002<\/li>\n<\/ul>\n<\/li>\n
        • \n
          \u53cd\u9988 Realm \u7684\u65f6\u949f\u72b6\u6001\u3002<\/p>\n<\/li>\n
        • \n
          \u4fdd\u5b58 Realm \u7684\u4e0a\u4e0b\u6587\u3002<\/p>\n<\/li>\n
        • \n
          \u6062\u590d NS \u7684\u4e0a\u4e0b\u6587\u3002<\/p>\n<\/li>\n<\/ul>\n
          \u51e0\u4e2a\u6bd4\u8f83\u91cd\u8981\u7684\u70b9\uff0c\u65f6\u949f\u7684\u68c0\u67e5\uff0cRealm \u7684\u4e0a\u4e0b\u6587\u7684\u4fdd\u5b58\u4e0e\u6062\u590d\uff0crun_realm<\/code> \u51fd\u6570\u4ee5\u53ca\u68c0\u67e5 Realm \u9000\u51fa\u539f\u56e0\u3002<\/p>\n
          Realm \u7684\u4e0a\u4e0b\u6587<\/h3>\n
          RMM \u5206\u522b\u8c03\u7528 save_realm_state<\/code> \u4ee5\u53ca restore_realm_state<\/code> \u51fd\u6570\u4fdd\u5b58\u548c\u6062\u590d Realm \u7684\u4e0a\u4e0b\u6587\u3002\u4e24\u4e2a\u51fd\u6570\u5747\u5728 core\/run.c<\/code> \u6587\u4ef6\u4e2d\u3002\u6211\u4eec\u4ee5 save_realm_state<\/code> \u4e3a\u4f8b\u5b50\uff0c\u4f1a\u6d89\u53ca\u5230\u4ee5\u4e0b\u8fc7\u7a0b\uff1a<\/p>\n
            \n
          • \u8c03\u7528 save_sysreg_state<\/code> \u4fdd\u5b58\u7cfb\u7edf\u5bc4\u5b58\u5668\u81f3 REC \u4e2d\u3002<\/li>\n
          • \u5c06 elr_el2<\/code> \u7684\u503c\u4fdd\u5b58\u5230 REC \u7684 PC \u4e2d\u3002<\/li>\n
          • \u5c06 spsr_el2<\/code> \u7684\u503c\u4fdd\u5b58\u5230 REC \u7684 pstate \u4e2d\u3002<\/li>\n
          • \u4fdd\u5b58 GIC \u4fe1\u606f\u5230 REC \u4e2d\u3002<\/li>\n
          • \u5bf9 PMU \u4e00\u4e9b\u5185\u5bb9\u8fdb\u884c\u5904\u7406\u3002<\/li>\n<\/ul>\n
            \u6b64\u5904\u6bd4\u8f83\u5173\u952e\u7684\u5185\u5bb9\u5c31\u662f save_sysreg_state<\/code> \u51fd\u6570\u3002\u540c\u6837\u4e5f\u5728 core\/run.c<\/code> \u6587\u4ef6\u4e2d\uff0c\u627e\u5230\u4e86\u8fd9\u4e2a\u51fd\u6570\u3002\u51fd\u6570\u5185\u5bb9\u57fa\u672c\u90fd\u662f\u8d4b\u503c\u8bed\u53e5\uff0c\u5c06\u8bfb\u53d6\u5230\u7684 sysreg \u7684\u503c\u5b58\u50a8\u5230\u76f8\u5e94\u7684 REC \u5bc4\u5b58\u5668\u4e2d\u3002\u8fd9\u4e9b\u5bc4\u5b58\u5668\u5c31\u6709\u6211\u4eec\u6bd4\u8f83\u5173\u6ce8\u7684\u5bc4\u5b58\u5668\uff0c\u4f8b\u5982 ttbr<\/code>\uff0cvbar<\/code> \u7b49\u3002\u8fd9\u4e2a\u51fd\u6570\u53ef\u4ee5\u8bc1\u660e\uff0c\u6574\u4e2a REC \u5c31\u4e00\u5957 sysreg\u3002<\/p>\n
            \n
            \u5bf9\u4e8e\u65f6\u949f\u548c Realm \u9000\u51fa\u68c0\u67e5\u7684\u5185\u5bb9\uff0c\u4f1a\u5728\u540e\u9762\u7684\u535a\u5ba2\u8bb2\u8ff0\u3002<\/p>\n
             <\/p>\n","protected":false},"excerpt":{"rendered":"
            Linaro RMM \u7684\u4ee3\u7801\u521d\u6b21\u9605\u8bfb\u548c\u7406\u89e3\u3002<\/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":[8],"class_list":["post-246","post","type-post","status-publish","format-standard","hentry","category-os","tag-cca"],"_links":{"self":[{"href":"https:\/\/www.yewpo.top\/index.php\/wp-json\/wp\/v2\/posts\/246","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yewpo.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yewpo.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yewpo.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yewpo.top\/index.php\/wp-json\/wp\/v2\/comments?post=246"}],"version-history":[{"count":0,"href":"https:\/\/www.yewpo.top\/index.php\/wp-json\/wp\/v2\/posts\/246\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yewpo.top\/index.php\/wp-json\/wp\/v2\/media?parent=246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yewpo.top\/index.php\/wp-json\/wp\/v2\/categories?post=246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yewpo.top\/index.php\/wp-json\/wp\/v2\/tags?post=246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}