projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| fe8c2806 WD |
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 | ||
| fe8c2806 WD |
27 | #include <config.h> |
| 28 | #include <version.h> | |
| 29 | ||
| 30 | ||
| 31 | /* some parameters for the board */ | |
| 32 | ||
| 33 | MEM_BASE: .long 0xa0000000 | |
| 34 | MEM_START: .long 0xc0000000 | |
| 35 | ||
| 36 | #define MDCNFG 0x00 | |
| 37 | #define MDCAS0 0x04 | |
| 38 | #define MDCAS1 0x08 | |
| 39 | #define MDCAS2 0x0c | |
| 40 | #define MSC0 0x10 | |
| 41 | #define MSC1 0x14 | |
| 42 | #define MECR 0x18 | |
| 43 | ||
| 44 | mdcas0: .long 0xc71c703f | |
| 45 | mdcas1: .long 0xffc71c71 | |
| 46 | mdcas2: .long 0xffffffff | |
| 47 | /* mdcnfg: .long 0x0bb2bcbf */ | |
| 48 | mdcnfg: .long 0x0334b22f @ alt | |
| 49 | /* mcs0: .long 0xfff8fff8 */ | |
| 50 | msc0: .long 0xad8c4888 @ alt | |
| 51 | mecr: .long 0x00060006 | |
| 52 | /* mecr: .long 0x994a994a @ alt */ | |
| 53 | ||
| 54 | /* setting up the memory */ | |
| 55 | ||
| 400558b5 WD |
56 | .globl lowlevel_init |
| 57 | lowlevel_init: | |
| fe8c2806 WD |
58 | ldr r0, MEM_BASE |
| 59 | ||
| 60 | /* Setup the flash memory */ | |
| 61 | ldr r1, msc0 | |
| 62 | str r1, [r0, #MSC0] | |
| 63 | ||
| 64 | /* Set up the DRAM */ | |
| 65 | ||
| 66 | /* MDCAS0 */ | |
| 67 | ldr r1, mdcas0 | |
| 68 | str r1, [r0, #MDCAS0] | |
| 69 | ||
| 70 | /* MDCAS1 */ | |
| 71 | ldr r1, mdcas1 | |
| 72 | str r1, [r0, #MDCAS1] | |
| 73 | ||
| 74 | /* MDCAS2 */ | |
| 75 | ldr r1, mdcas2 | |
| 76 | str r1, [r0, #MDCAS2] | |
| 77 | ||
| 78 | /* MDCNFG */ | |
| 79 | ldr r1, mdcnfg | |
| 80 | str r1, [r0, #MDCNFG] | |
| 81 | ||
| 82 | /* Set up PCMCIA space */ | |
| 83 | ldr r1, mecr | |
| 84 | str r1, [r0, #MECR] | |
| 85 | ||
| 86 | /* Load something to activate bank */ | |
| 87 | ldr r1, MEM_START | |
| 88 | ||
| 89 | .rept 8 | |
| 90 | ldr r0, [r1] | |
| 91 | .endr | |
| 92 | ||
| 93 | /* everything is fine now */ | |
| 94 | mov pc, lr |