{"id":926,"date":"2022-08-03T09:19:52","date_gmt":"2022-08-03T09:19:52","guid":{"rendered":"http:\/\/www.recologypower.com:9080\/?p=926"},"modified":"2022-09-01T02:27:08","modified_gmt":"2022-09-01T02:27:08","slug":"%e3%80%90lx2160%e3%80%91ddr4%e8%b0%83%e8%af%95","status":"publish","type":"post","link":"http:\/\/www.recologypower.com:9080\/?p=926","title":{"rendered":"\u3010LX2160\u3011DDR4\u8c03\u8bd5"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u786c\u4ef6\u63cf\u8ff0<\/h2>\n\n\n\n<p>\u786c\u4ef6\u914d\u7f6e\uff1a5\u9897ddr4,\u5176\u4e2d\u4e00\u9897\u4f5c\u4e3aecc\u3002<\/p>\n\n\n\n<p>1\u3001DDR\u95ee\u9898\u4f1a\u5bfc\u81f4uboot\u65e0\u6cd5\u52a0\u8f7d\u8fd0\u884c\u3002\u6240\u4ee5RCW\u914d\u7f6e\u5b8c\u540e\u6700\u91cd\u8981\u7684\u5c31\u662f\u8c03\u8bd5DDR\u3002\u9996\u5148\u68c0\u67e5ddr\u786c\u4ef6\u4e0a\u7684\u8bbe\u8ba1\uff0cDQ\u4fe1\u53f7\u8bbe\u8ba1\u5e94\u8be5\u662f4\u4f4d\u4ea4\u53c9\uff08swap\uff09\uff0c\u4e3b\u8981\u539f\u56e0\u662fCW\u8f6f\u4ef6DQ mapping\u662f\u6309\u71674\u4f4d\u914d\u7f6e\u7684\uff0c\u6ca1\u67098\u4f4d\u7684swap\u914d\u7f6e\uff0c\u5982\u679c\u786c\u4ef6\u4e0d\u662f\u6309\u71674\u4f4dswizzled\u7684\uff0cddr\u7684\u53c2\u6570\u6821\u51c6\u4f1a\u901a\u4e0d\u8fc7\u3002\u6211\u4eec\u7684\u9879\u76ee\u7b2c\u4e00\u7248\u5373\u4f7f\u56e0\u4e3a\u786c\u4ef6DQ\u4fe1\u53f7\u662f\u6309\u71678\u4f4d\u8bbe\u8ba1\u7684\uff0cDQ\u53c2\u6570\u65e0\u6cd5\u6b63\u786e\u914d\u7f6e\uff0c\u4ece\u800cddr\u6821\u51c6\u4e0d\u8fc7\uff0c\u4e0d\u5f97\u5df2\u6700\u540e\u6539\u7248\u62104\u4f4dswpa\uff0c\u624d\u6210\u529f\u4e86\u3002DQ mapping\u53c2\u6570\u7531\u786c\u4ef6\u63d0\u4f9b\uff0c\u7136\u540e\u518dcw\u4e0a\u5bf9\u5e94\u586b\u5199\u5c31\u884c\u3002DQ_MAP\u539f\u7406\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"551\" height=\"430\" src=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-1.png\" alt=\"\" class=\"wp-image-928\" srcset=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-1.png 551w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-1-300x234.png 300w\" sizes=\"(max-width: 551px) 100vw, 551px\" \/><\/figure>\n\n\n\n<p>Codewarrior DQ mapping\u914d\u7f6e-4\u4f4dswap\uff0c\u6839\u636e\u5b9e\u9645\u7535\u8def\u8c03\u6574\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"465\" height=\"249\" src=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-4.png\" alt=\"\" class=\"wp-image-933\" srcset=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-4.png 465w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-4-300x161.png 300w\" sizes=\"(max-width: 465px) 100vw, 465px\" \/><\/figure>\n\n\n\n<p>2\u3001\u5728\u521b\u5efaddr\u914d\u7f6e\u5de5\u7a0b\u7684\u65f6\u5019\uff0c\u9700\u8981\u586b\u5199\u7684clk to dqs\u7531\u786c\u4ef6\u63d0\u4f9b\uff0c\u8981\u6b63\u786e\u586b\u5199\u3002\u5176\u4ed6\u7684\u503c\u6309\u7167ddr\u624b\u518c\u914d\u7f6e\u597d\u5c31\u884c<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"661\" height=\"937\" src=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-3.png\" alt=\"\" class=\"wp-image-930\" srcset=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-3.png 661w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-3-212x300.png 212w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/08\/f5c7909c3f034ad483b7f6f083302c47-3-600x851.png 600w\" sizes=\"(max-width: 661px) 100vw, 661px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u53c2\u6570\u4ecb\u7ecd<\/h2>\n\n\n\n<p>1\u3001DRAM type: \u9897\u7c92\u7684\u914d\u7f6e\u6210NoDimm<\/p>\n\n\n\n<p>2\u3001\u4f7f\u7528CW\u505avalidation\u53c2\u6570\u6821\u51c6\uff0c\u8fd9\u4e2a\u6bd4\u8f83\u8d39\u65f6\u3002<\/p>\n\n\n\n<p>3\u3001\u6821\u51c6\u5b8c\u6bd5\u540e\uff0c\u548cRCW\u4e00\u6837\uff0c\u70b9\u51fb\u751f\u6210\u4ee3\u7801\u6309\u94ae\uff0c\u4f1a\u751f\u6210ddr_init1.c\uff0c\u627e\u5230ddr_raw_timing\u7ed3\u6784\u4f53\uff0c\u590d\u5236\u5230\u81ea\u5df1\u7684ddr_init.c\u4e2d\u66ff\u4ee3\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct dimm_params ddr_raw_timing = {\n        .n_ranks = 1,\n        .rank_density = 8589934592u,\n        .capacity = 8589934592u,\n        .primary_sdram_width = 64,\n        .ec_sdram_width = 8,\n        .device_width = 8,\n        .die_density = 0x08,\n        .rdimm = 0,\n        .mirrored_dimm = 0,\n        .n_row_addr = 16,\n        .n_col_addr = 10,\n        .bank_addr_bits = 0,\n        .bank_group_bits = 2,\n        .edc_config = 2,\n        .burst_lengths_bitmask = 0x0c,\n        .tckmin_x_ps = 625,\n        .tckmax_ps = 1600,\n        .caslat_x = 0x00FFFC00,\n        .taa_ps = 18800,\n        .trcd_ps = 18800,\n        .trp_ps = 18800,\n        .tras_ps = 43800,\n        .trc_ps = 37600,\n        .twr_ps = 20000,\n        .trfc1_ps = 350000,\n        .trfc2_ps = 260000,\n        .trfc4_ps = 160000,\n        .tfaw_ps = 25000,\n        .trrds_ps = 25000,\n        .trrdl_ps = 6200,\n        .tccdl_ps = 6200,\n        .refresh_rate_ps = 10237500\n};<\/code><\/pre>\n\n\n\n<p>4\u3001\u5728packages\/firmware\/atf\/plat\/nxp\/soc-lx2160\/lx2160ardb\/platform_def.h\u4e2d\u5b9a\u4e49\u4e0b\u9762\u7684\u5b8f:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#define CONFIG_DDR_NODIMM<\/code><\/pre>\n\n\n\n<p>flex-builder -c atf -m lx2160ardb_rev2 -b xspi \u751f\u6210fip.bin\u6587\u4ef6\uff0c\u4f7f\u7528codewarrior tap\u4e0b\u8f7d\u5230flash\u3002\u5efa\u8bae\u5148\u4e0b\u8f7d\u4e00\u4e2a\u5b98\u65b9\u7684\u590d\u5408\u56fa\u4ef6\uff0c\u7136\u540e\u66ff\u6362\u81ea\u5df1\u7684fip.bin\u548cfip_uboot.bin\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u5f00\u542fDDR Log<\/h2>\n\n\n\n<p>\u4fee\u6539\u6587\u4ef6\uff1aflexbuild_lsdk2108\/components\/firmware\/atf$ vim Makefile<\/p>\n\n\n\n<p>\u4fee\u6539\u5185\u5bb9\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"582\" height=\"335\" src=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/09\/\u5fae\u4fe1\u56fe\u7247_20220901102507.png\" alt=\"\" class=\"wp-image-956\" srcset=\"http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/09\/\u5fae\u4fe1\u56fe\u7247_20220901102507.png 582w, http:\/\/www.recologypower.com:9080\/wp-content\/uploads\/2022\/09\/\u5fae\u4fe1\u56fe\u7247_20220901102507-300x173.png 300w\" sizes=\"(max-width: 582px) 100vw, 582px\" \/><\/figure>\n\n\n\n<p>\u4fee\u6539\u6587\u4ef6\uff1aflexbuild_lsdk2108\/components\/firmware\/atf\/plat\/nxp\/soc-lx2160a\/lx2160ardb\/platform.mk<\/p>\n\n\n\n<p>\u4fee\u6539\u5185\u5bb9\uff1a\u589e\u52a0DDR_DEBUG := yes<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"slide-text-bg2\">\n<h3>\u4e00\u3001\u786c\u4ef6\u63cf\u8ff0 \u786c\u4ef6\u914d\u7f6e\uff1a5\u9897ddr4,\u5176<\/h3>\n<\/div>\n<div class=\"flex-btn-div\"><a href=\"http:\/\/www.recologypower.com:9080\/?p=926\" class=\"btn1 flex-btn\">\u9605\u8bfb\u66f4\u591a<\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[102],"tags":[],"_links":{"self":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/926"}],"collection":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=926"}],"version-history":[{"count":4,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/926\/revisions"}],"predecessor-version":[{"id":957,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/926\/revisions\/957"}],"wp:attachment":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=926"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}