2 * board/mx1ads/lowlevel_init.S
5 * Techware Information Technology, Inc.
6 * http://www.techware.com.tw/
8 * Ming-Len Wu <minglen_wu@techware.com.tw>
10 * SPDX-License-Identifier: GPL-2.0+
16 #define SDCTL0 0x221000
17 #define SDCTL1 0x221004
21 .word CONFIG_SYS_TEXT_BASE
25 /* memory controller init */
29 /* Set Precharge Command */
32 /* ldr r3, =0x92120251
36 /* Issue Precharge All Commad */
40 /* Set AutoRefresh Command */
44 /* Issue AutoRefresh Command */
55 /* Set Mode Register */
59 /* Issue Mode Register Command */
60 ldr r3, =0x08111800 /* Mode Register Value */
67 /* everything is fine now */