| stroese | b318262 | 2003-09-12 08:41:56 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2001 |
| 3 | * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com |
| 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 <ppc4xx.h> |
| 26 | #include <asm/processor.h> |
| 27 | |
| 28 | /* |
| 29 | * include common flash code (for esd boards) |
| 30 | */ |
| 31 | #include "../common/flash.c" |
| 32 | |
| 33 | /*----------------------------------------------------------------------- |
| 34 | * Functions |
| 35 | */ |
| 36 | static ulong flash_get_size (vu_long * addr, flash_info_t * info); |
| 37 | static void flash_get_offsets (ulong base, flash_info_t * info); |
| 38 | |
| 39 | /*----------------------------------------------------------------------- |
| 40 | */ |
| 41 | |
| 42 | unsigned long flash_init (void) |
| 43 | { |
| 44 | unsigned long size_b0; |
| 45 | int i; |
| 46 | uint pbcr; |
| 47 | unsigned long base_b0; |
| 48 | int size_val = 0; |
| 49 | |
| 50 | /* Init: no FLASHes known */ |
| 51 | for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) { |
| 52 | flash_info[i].flash_id = FLASH_UNKNOWN; |
| 53 | } |
| 54 | |
| 55 | /* Static FLASH Bank configuration here - FIXME XXX */ |
| 56 | |
| 57 | size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); |
| 58 | |
| 59 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { |
| 60 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", |
| 61 | size_b0, size_b0<<20); |
| 62 | } |
| 63 | |
| 64 | /* Setup offsets */ |
| 65 | flash_get_offsets (-size_b0, &flash_info[0]); |
| 66 | |
| 67 | /* Re-do sizing to get full correct info */ |
| 68 | mtdcr(ebccfga, pb0cr); |
| 69 | pbcr = mfdcr(ebccfgd); |
| 70 | mtdcr(ebccfga, pb0cr); |
| 71 | base_b0 = -size_b0; |
| 72 | switch (size_b0) { |
| 73 | case 1 << 20: |
| 74 | size_val = 0; |
| 75 | break; |
| 76 | case 2 << 20: |
| 77 | size_val = 1; |
| 78 | break; |
| 79 | case 4 << 20: |
| 80 | size_val = 2; |
| 81 | break; |
| 82 | case 8 << 20: |
| 83 | size_val = 3; |
| 84 | break; |
| 85 | case 16 << 20: |
| 86 | size_val = 4; |
| 87 | break; |
| 88 | } |
| 89 | pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17); |
| 90 | mtdcr(ebccfgd, pbcr); |
| 91 | |
| 92 | /* Monitor protection ON by default */ |
| 93 | (void)flash_protect(FLAG_PROTECT_SET, |
| 94 | -CFG_MONITOR_LEN, |
| 95 | 0xffffffff, |
| 96 | &flash_info[0]); |
| 97 | |
| 98 | flash_info[0].size = size_b0; |
| 99 | |
| 100 | return (size_b0); |
| 101 | } |