| wdenk | 9f664dd | 2004-06-09 21:50:45 +0000 | [diff] [blame] | 1 | /* |
| 2 | * board/mx1ads/memsetup.S |
| wdenk | 9e930b6 | 2004-06-19 21:19:10 +0000 | [diff] [blame^] | 3 | * |
| wdenk | 9f664dd | 2004-06-09 21:50:45 +0000 | [diff] [blame] | 4 | * (c) Copyright 2004 |
| 5 | * Techware Information Technology, Inc. |
| 6 | * http://www.techware.com.tw/ |
| 7 | * |
| 8 | * Ming-Len Wu <minglen_wu@techware.com.tw> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License as |
| 12 | * published by the Free Software Foundation; either version 2 of |
| 13 | * the License, or (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 23 | * MA 02111-1307 USA |
| 24 | */ |
| 25 | |
| 26 | #include <config.h> |
| 27 | #include <version.h> |
| 28 | |
| 29 | #define SDCTL0 0x221000 |
| 30 | #define SDCTL1 0x221004 |
| 31 | |
| 32 | |
| 33 | _TEXT_BASE: |
| 34 | .word TEXT_BASE |
| 35 | |
| 36 | .globl memsetup |
| 37 | memsetup: |
| 38 | /* memory controller init */ |
| 39 | |
| 40 | ldr r1, =SDCTL0 |
| 41 | |
| 42 | /* Set Precharge Command */ |
| 43 | |
| 44 | ldr r3, =0x92120200 |
| 45 | /* ldr r3, =0x92120251 |
| 46 | */ |
| 47 | str r3, [r1] |
| 48 | |
| 49 | /* Issue Precharge All Commad */ |
| 50 | ldr r3, =0x8200000 |
| 51 | ldr r2, [r3] |
| wdenk | 9e930b6 | 2004-06-19 21:19:10 +0000 | [diff] [blame^] | 52 | |
| wdenk | 9f664dd | 2004-06-09 21:50:45 +0000 | [diff] [blame] | 53 | /* Set AutoRefresh Command */ |
| 54 | ldr r3, =0xA2120200 |
| 55 | str r3, [r1] |
| 56 | |
| 57 | /* Issue AutoRefresh Command */ |
| 58 | ldr r3, =0x8000000 |
| 59 | ldr r2, [r3] |
| 60 | ldr r2, [r3] |
| 61 | ldr r2, [r3] |
| 62 | ldr r2, [r3] |
| 63 | ldr r2, [r3] |
| 64 | ldr r2, [r3] |
| 65 | ldr r2, [r3] |
| 66 | ldr r2, [r3] |
| wdenk | 9e930b6 | 2004-06-19 21:19:10 +0000 | [diff] [blame^] | 67 | |
| wdenk | 9f664dd | 2004-06-09 21:50:45 +0000 | [diff] [blame] | 68 | /* Set Mode Register */ |
| 69 | ldr r3, =0xB2120200 |
| 70 | str r3, [r1] |
| wdenk | 9e930b6 | 2004-06-19 21:19:10 +0000 | [diff] [blame^] | 71 | |
| wdenk | 9f664dd | 2004-06-09 21:50:45 +0000 | [diff] [blame] | 72 | /* Issue Mode Register Command */ |
| 73 | ldr r3, =0x08111800 /* Mode Register Value */ |
| 74 | ldr r2, [r3] |
| 75 | |
| 76 | /* Set Normal Mode */ |
| 77 | ldr r3, =0x82124200 |
| 78 | str r3, [r1] |
| 79 | |
| 80 | /* everything is fine now */ |
| 81 | mov pc, lr |