sdramsetup_b.txt

来自「基于dragon_MX1_ads的装载启动代码armboot」· 文本 代码 · 共 22 行

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* Initialize SDRAM                         *
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00221000C492120200   ; pre-charge command
08200000E4   ; special read

00221000C4A2120200   ; auto-refresh command
08000000E4   ; 8 special read
08000000E4   ; 8 special read
08000000E4   ; 8 special read
08000000E4   ; 8 special read
08000000E4   ; 8 special read
08000000E4   ; 8 special read
08000000E4   ; 8 special read
08000000E4   ; 8 special read

00221000C4B2120200   ; set mode register
08111800E4   ; special read

00221000C482124200   ; set normal mode