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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | /* * (C) Copyright 2001 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <ppc4xx.h> #include <asm/processor.h> /* * include common flash code (for esd boards) */ #include "../common/flash.c" /*----------------------------------------------------------------------- * Functions */ static ulong flash_get_size (vu_long * addr, flash_info_t * info); static void flash_get_offsets (ulong base, flash_info_t * info); /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { unsigned long size_b0, size_b1; int i; uint pbcr; unsigned long base_b0, base_b1; int size_val = 0; /* Init: no FLASHes known */ for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; } /* Static FLASH Bank configuration here - FIXME XXX */ base_b0 = FLASH_BASE0_PRELIM; size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]); if (flash_info[0].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", size_b0, size_b0 << 20); } base_b1 = FLASH_BASE1_PRELIM; size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]); /* Re-do sizing to get full correct info */ if (size_b1) { mtdcr (ebccfga, pb0cr); pbcr = mfdcr (ebccfgd); mtdcr (ebccfga, pb0cr); base_b1 = -size_b1; switch (size_b1) { case 1 << 20: size_val = 0; break; case 2 << 20: size_val = 1; break; case 4 << 20: size_val = 2; break; case 8 << 20: size_val = 3; break; case 16 << 20: size_val = 4; break; } pbcr = (pbcr & 0x0001ffff) | base_b1 | (size_val << 17); mtdcr (ebccfgd, pbcr); /* printf("pb1cr = %x\n", pbcr); */ } if (size_b0) { mtdcr (ebccfga, pb1cr); pbcr = mfdcr (ebccfgd); mtdcr (ebccfga, pb1cr); base_b0 = base_b1 - size_b0; switch (size_b1) { case 1 << 20: size_val = 0; break; case 2 << 20: size_val = 1; break; case 4 << 20: size_val = 2; break; case 8 << 20: size_val = 3; break; case 16 << 20: size_val = 4; break; } pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17); mtdcr (ebccfgd, pbcr); /* printf("pb0cr = %x\n", pbcr); */ } size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]); flash_get_offsets (base_b0, &flash_info[0]); /* monitor protection ON by default */ flash_protect (FLAG_PROTECT_SET, base_b0 + size_b0 - monitor_flash_len, base_b0 + size_b0 - 1, &flash_info[0]); if (size_b1) { /* Re-do sizing to get full correct info */ size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]); flash_get_offsets (base_b1, &flash_info[1]); /* monitor protection ON by default */ flash_protect (FLAG_PROTECT_SET, base_b1 + size_b1 - monitor_flash_len, base_b1 + size_b1 - 1, &flash_info[1]); /* monitor protection OFF by default (one is enough) */ flash_protect (FLAG_PROTECT_CLEAR, base_b0 + size_b0 - monitor_flash_len, base_b0 + size_b0 - 1, &flash_info[0]); } else { flash_info[1].flash_id = FLASH_UNKNOWN; flash_info[1].sector_count = -1; } flash_info[0].size = size_b0; flash_info[1].size = size_b1; return (size_b0 + size_b1); } |