| Grant Erickson | c821b5f | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2008 Nuovation System Designs, LLC |
| 3 | * Grant Erickson <gerickson@nuovations.com> |
| 4 | * |
| 5 | * Copyright (c) 2007 DENX Software Engineering, GmbH |
| 6 | * Stefan Roese <sr@denx.de> |
| 7 | * |
| 8 | * See file CREDITS for list of people who contributed to this |
| 9 | * project. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License as |
| 13 | * published by the Free Software Foundation; either version 2 of |
| 14 | * the License, or (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will abe useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 24 | * MA 02111-1307 USA |
| 25 | * |
| 26 | * Description: |
| 27 | * This file implements ECC initialization for PowerPC processors |
| 28 | * using the SDRAM DDR2 controller, including the 405EX(r), |
| 29 | * 440SP(E), 460EX and 460GT. |
| 30 | * |
| 31 | */ |
| 32 | |
| 33 | #ifndef _ECC_H_ |
| 34 | #define _ECC_H_ |
| 35 | |
| 36 | #if !defined(CFG_ECC_PATTERN) |
| 37 | #define CFG_ECC_PATTERN 0x00000000 |
| 38 | #endif /* !defined(CFG_ECC_PATTERN) */ |
| 39 | |
| Stefan Roese | 39b32be | 2008-06-02 17:20:03 +0200 | [diff] [blame] | 40 | /* |
| 41 | * Since the IBM DDR controller used on 440GP/GX/EP/GR is not register |
| 42 | * compatible to the IBM DDR/2 controller used on 405EX/440SP/SPe/460EX/GT |
| 43 | * we need to make some processor dependant defines used later on by the |
| 44 | * driver. |
| 45 | */ |
| 46 | |
| 47 | /* For 440GP/GX/EP/GR */ |
| 48 | #if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR) |
| 49 | #define SDRAM_ECC_CFG SDRAM_CFG0 |
| 50 | #define SDRAM_ECC_CFG_MCHK_MASK SDRAM_CFG0_MCHK_MASK |
| 51 | #define SDRAM_ECC_CFG_MCHK_GEN SDRAM_CFG0_MCHK_GEN |
| 52 | #define SDRAM_ECC_CFG_MCHK_CHK SDRAM_CFG0_MCHK_CHK |
| 53 | #define SDRAM_ECC_CFG_DMWD_MASK SDRAM_CFG0_DMWD_MASK |
| 54 | #define SDRAM_ECC_CFG_DMWD_32 SDRAM_CFG0_DMWD_32 |
| 55 | #endif |
| 56 | |
| 57 | /* For 405EX/440SP/SPe/460EX/GT */ |
| 58 | #if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR2) |
| 59 | #define SDRAM_ECC_CFG SDRAM_MCOPT1 |
| 60 | #define SDRAM_ECC_CFG_MCHK_MASK SDRAM_MCOPT1_MCHK_MASK |
| 61 | #define SDRAM_ECC_CFG_MCHK_GEN SDRAM_MCOPT1_MCHK_GEN |
| 62 | #define SDRAM_ECC_CFG_MCHK_CHK SDRAM_MCOPT1_MCHK_CHK |
| 63 | #define SDRAM_ECC_CFG_DMWD_MASK SDRAM_MCOPT1_DMWD_MASK |
| 64 | #define SDRAM_ECC_CFG_DMWD_32 SDRAM_MCOPT1_DMWD_32 |
| 65 | #endif |
| 66 | |
| Grant Erickson | c821b5f | 2008-05-22 14:44:14 -0700 | [diff] [blame] | 67 | extern void ecc_init(unsigned long * const start, unsigned long size); |
| 68 | |
| 69 | #endif /* _ECC_H_ */ |