| Wolfgang Denk | 4646d2a | 2006-05-30 15:56:48 +0200 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2006 |
| 3 | * Stefan Roese, DENX Software Engineering, sr@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | #include <asm/arch/ixp425.h> |
| 26 | |
| 27 | /* |
| 28 | * include common flash code (for esd boards) |
| 29 | */ |
| 30 | #include "../common/flash.c" |
| 31 | |
| 32 | /* |
| 33 | * Prototypes |
| 34 | */ |
| 35 | static ulong flash_get_size (vu_long * addr, flash_info_t * info); |
| 36 | |
| 37 | static inline ulong ld(ulong x) |
| 38 | { |
| 39 | ulong k = 0; |
| 40 | |
| 41 | while (x >>= 1) |
| 42 | ++k; |
| 43 | |
| 44 | return k; |
| 45 | } |
| 46 | |
| 47 | unsigned long flash_init(void) |
| 48 | { |
| 49 | unsigned long size; |
| 50 | int i; |
| 51 | |
| 52 | /* Init: no FLASHes known */ |
| 53 | for (i=0; i<CFG_MAX_FLASH_BANKS; i++) |
| 54 | flash_info[i].flash_id = FLASH_UNKNOWN; |
| 55 | |
| 56 | size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); |
| 57 | |
| 58 | if (flash_info[0].flash_id == FLASH_UNKNOWN) |
| 59 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", |
| 60 | size, size<<20); |
| 61 | |
| 62 | /* Reconfigure CS0 to actual FLASH size */ |
| 63 | *IXP425_EXP_CS0 = (*IXP425_EXP_CS0 & ~0x00003C00) | ((ld(size) - 9) << 10); |
| 64 | |
| 65 | /* Monitor protection ON by default */ |
| 66 | flash_protect(FLAG_PROTECT_SET, |
| 67 | CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1, |
| 68 | &flash_info[CFG_MAX_FLASH_BANKS - 1]); |
| 69 | |
| 70 | /* Environment protection ON by default */ |
| 71 | flash_protect(FLAG_PROTECT_SET, |
| 72 | CFG_ENV_ADDR, |
| 73 | CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1, |
| 74 | &flash_info[CFG_MAX_FLASH_BANKS - 1]); |
| 75 | |
| 76 | /* Redundant environment protection ON by default */ |
| 77 | flash_protect(FLAG_PROTECT_SET, |
| 78 | CFG_ENV_ADDR_REDUND, |
| 79 | CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1, |
| 80 | &flash_info[CFG_MAX_FLASH_BANKS - 1]); |
| 81 | |
| 82 | flash_info[0].size = size; |
| 83 | |
| 84 | return size; |
| 85 | } |