| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Memory Setup stuff - taken from blob memsetup.S |
| 3 | * |
| 4 | * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and |
| 5 | * Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl) |
| 6 | * |
| 7 | * See file CREDITS for list of people who contributed to this |
| 8 | * project. |
| 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 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 27 | #include "config.h" |
| 28 | #include "version.h" |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 29 | |
| 30 | |
| 31 | /* some parameters for the board */ |
| 32 | |
| 33 | MEM_BASE: .long 0xa0000000 |
| 34 | MEM_START: .long 0xc0000000 |
| 35 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 36 | #define MDCNFG 0x00 |
| 37 | #define MDCAS00 0x04 /* CAS waveform rotate reg 0 */ |
| 38 | #define MDCAS01 0x08 /* CAS waveform rotate reg 1 bank */ |
| 39 | #define MDCAS02 0x0C /* CAS waveform rotate reg 2 bank */ |
| 40 | #define MDREFR 0x1C /* DRAM refresh control reg */ |
| wdenk | 57b2d80 | 2003-06-27 21:31:46 +0000 | [diff] [blame] | 41 | #define MDCAS20 0x20 /* CAS waveform rotate reg 0 bank */ |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 42 | #define MDCAS21 0x24 /* CAS waveform rotate reg 1 bank */ |
| 43 | #define MDCAS22 0x28 /* CAS waveform rotate reg 2 bank */ |
| 44 | #define MECR 0x18 /* Expansion memory (PCMCIA) bus configuration register */ |
| 45 | #define MSC0 0x10 /* static memory control reg 0 */ |
| 46 | #define MSC1 0x14 /* static memory control reg 1 */ |
| 47 | #define MSC2 0x2C /* static memory control reg 2 */ |
| 48 | #define SMCNFG 0x30 /* SMROM configuration reg */ |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 49 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 50 | mdcas00: .long 0x5555557F |
| 51 | mdcas01: .long 0x55555555 |
| 52 | mdcas02: .long 0x55555555 |
| 53 | mdcas20: .long 0x5555557F |
| 54 | mdcas21: .long 0x55555555 |
| 55 | mdcas22: .long 0x55555555 |
| 56 | mdcnfg: .long 0x0000B25C |
| 57 | mdrefr: .long 0x007000C1 |
| 58 | mecr: .long 0x10841084 |
| 59 | msc0: .long 0x00004774 |
| 60 | msc1: .long 0x00000000 |
| 61 | msc2: .long 0x00000000 |
| 62 | smcnfg: .long 0x00000000 |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 63 | |
| 64 | /* setting up the memory */ |
| 65 | |
| 66 | .globl memsetup |
| 67 | memsetup: |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 68 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 69 | ldr r0, MEM_BASE |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 70 | |
| 71 | /* Set up the DRAM */ |
| 72 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 73 | /* MDCAS00 */ |
| 74 | ldr r1, mdcas00 |
| 75 | str r1, [r0, #MDCAS00] |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 76 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 77 | /* MDCAS01 */ |
| 78 | ldr r1, mdcas01 |
| 79 | str r1, [r0, #MDCAS01] |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 80 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 81 | /* MDCAS02 */ |
| 82 | ldr r1, mdcas02 |
| 83 | str r1, [r0, #MDCAS02] |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 84 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 85 | /* MDCAS20 */ |
| 86 | ldr r1, mdcas20 |
| 87 | str r1, [r0, #MDCAS20] |
| 88 | |
| 89 | /* MDCAS21 */ |
| 90 | ldr r1, mdcas21 |
| 91 | str r1, [r0, #MDCAS21] |
| 92 | |
| 93 | /* MDCAS22 */ |
| 94 | ldr r1, mdcas22 |
| 95 | str r1, [r0, #MDCAS22] |
| 96 | |
| 97 | /* MDREFR */ |
| 98 | ldr r1, mdrefr |
| 99 | str r1, [r0, #MDREFR] |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 100 | |
| 101 | /* Set up PCMCIA space */ |
| 102 | ldr r1, mecr |
| 103 | str r1, [r0, #MECR] |
| 104 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 105 | /* Setup the flash memory and other */ |
| 106 | ldr r1, msc0 |
| 107 | str r1, [r0, #MSC0] |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 108 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 109 | ldr r1, msc1 |
| 110 | str r1, [r0, #MSC1] |
| 111 | |
| 112 | ldr r1, msc2 |
| 113 | str r1, [r0, #MSC2] |
| 114 | |
| 115 | ldr r1, smcnfg |
| 116 | str r1, [r0, #SMCNFG] |
| 117 | |
| 118 | /* MDCNFG */ |
| 119 | ldr r1, mdcnfg |
| 120 | bic r1, r1, #0x00000001 |
| 121 | str r1, [r0, #MDCNFG] |
| 122 | |
| 123 | /* Load something to activate bank */ |
| 124 | ldr r2, MEM_START |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 125 | .rept 8 |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 126 | ldr r1, [r2] |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 127 | .endr |
| 128 | |
| wdenk | c8434db | 2003-03-26 06:55:25 +0000 | [diff] [blame] | 129 | /* MDCNFG */ |
| 130 | ldr r1, mdcnfg |
| 131 | orr r1, r1, #0x00000001 |
| 132 | str r1, [r0, #MDCNFG] |
| 133 | |
| wdenk | fe8c280 | 2002-11-03 00:38:21 +0000 | [diff] [blame] | 134 | /* everything is fine now */ |
| 135 | mov pc, lr |