wdenk | 3a473b2 | 2004-01-03 00:43:19 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2000 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@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 | * Hacked for the marvell db64360 eval board by |
| 24 | * Ingo Assmus <ingo.assmus@keymile.com> |
| 25 | */ |
| 26 | |
| 27 | #include <common.h> |
| 28 | #include <mpc8xx.h> |
| 29 | #include "../include/mv_gen_reg.h" |
| 30 | #include "../include/memory.h" |
| 31 | #include "intel_flash.h" |
| 32 | |
| 33 | |
| 34 | /*----------------------------------------------------------------------- |
| 35 | * Protection Flags: |
| 36 | */ |
| 37 | #define FLAG_PROTECT_SET 0x01 |
| 38 | #define FLAG_PROTECT_CLEAR 0x02 |
| 39 | |
| 40 | static void bank_reset (flash_info_t * info, int sect) |
| 41 | { |
| 42 | bank_addr_t addrw, eaddrw; |
| 43 | |
| 44 | addrw = (bank_addr_t) info->start[sect]; |
| 45 | eaddrw = BANK_ADDR_NEXT_WORD (addrw); |
| 46 | |
| 47 | while (addrw < eaddrw) { |
| 48 | #ifdef FLASH_DEBUG |
| 49 | printf (" writing reset cmd to addr 0x%08lx\n", |
| 50 | (unsigned long) addrw); |
| 51 | #endif |
| 52 | *addrw = BANK_CMD_RST; |
| 53 | addrw++; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | static void bank_erase_init (flash_info_t * info, int sect) |
| 58 | { |
| 59 | bank_addr_t addrw, saddrw, eaddrw; |
| 60 | int flag; |
| 61 | |
| 62 | #ifdef FLASH_DEBUG |
| 63 | printf ("0x%08x BANK_CMD_PROG\n", BANK_CMD_PROG); |
| 64 | printf ("0x%08x BANK_CMD_ERASE1\n", BANK_CMD_ERASE1); |
| 65 | printf ("0x%08x BANK_CMD_ERASE2\n", BANK_CMD_ERASE2); |
| 66 | printf ("0x%08x BANK_CMD_CLR_STAT\n", BANK_CMD_CLR_STAT); |
| 67 | printf ("0x%08x BANK_CMD_RST\n", BANK_CMD_RST); |
| 68 | printf ("0x%08x BANK_STAT_RDY\n", BANK_STAT_RDY); |
| 69 | printf ("0x%08x BANK_STAT_ERR\n", BANK_STAT_ERR); |
| 70 | #endif |
| 71 | |
| 72 | saddrw = (bank_addr_t) info->start[sect]; |
| 73 | eaddrw = BANK_ADDR_NEXT_WORD (saddrw); |
| 74 | |
| 75 | #ifdef FLASH_DEBUG |
| 76 | printf ("erasing sector %d, start addr = 0x%08lx " |
| 77 | "(bank next word addr = 0x%08lx)\n", sect, |
| 78 | (unsigned long) saddrw, (unsigned long) eaddrw); |
| 79 | #endif |
| 80 | |
| 81 | /* Disable intrs which might cause a timeout here */ |
| 82 | flag = disable_interrupts (); |
| 83 | |
| 84 | for (addrw = saddrw; addrw < eaddrw; addrw++) { |
| 85 | #ifdef FLASH_DEBUG |
| 86 | printf (" writing erase cmd to addr 0x%08lx\n", |
| 87 | (unsigned long) addrw); |
| 88 | #endif |
| 89 | *addrw = BANK_CMD_ERASE1; |
| 90 | *addrw = BANK_CMD_ERASE2; |
| 91 | } |
| 92 | |
| 93 | /* re-enable interrupts if necessary */ |
| 94 | if (flag) |
| 95 | enable_interrupts (); |
| 96 | } |
| 97 | |
| 98 | static int bank_erase_poll (flash_info_t * info, int sect) |
| 99 | { |
| 100 | bank_addr_t addrw, saddrw, eaddrw; |
| 101 | int sectdone, haderr; |
| 102 | |
| 103 | saddrw = (bank_addr_t) info->start[sect]; |
| 104 | eaddrw = BANK_ADDR_NEXT_WORD (saddrw); |
| 105 | |
| 106 | sectdone = 1; |
| 107 | haderr = 0; |
| 108 | |
| 109 | for (addrw = saddrw; addrw < eaddrw; addrw++) { |
| 110 | bank_word_t stat = *addrw; |
| 111 | |
| 112 | #ifdef FLASH_DEBUG |
| 113 | printf (" checking status at addr " |
| 114 | "0x%08x [0x%08x]\n", (unsigned long) addrw, stat); |
| 115 | #endif |
| 116 | if ((stat & BANK_STAT_RDY) != BANK_STAT_RDY) |
| 117 | sectdone = 0; |
| 118 | else if ((stat & BANK_STAT_ERR) != 0) { |
| 119 | printf (" failed on sector %d " |
| 120 | "(stat = 0x%08x) at " |
| 121 | "address 0x%p\n", sect, stat, addrw); |
| 122 | *addrw = BANK_CMD_CLR_STAT; |
| 123 | haderr = 1; |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | if (haderr) |
| 128 | return (-1); |
| 129 | else |
| 130 | return (sectdone); |
| 131 | } |
| 132 | |
| 133 | int write_word_intel (bank_addr_t addr, bank_word_t value) |
| 134 | { |
| 135 | bank_word_t stat; |
| 136 | ulong start; |
| 137 | int flag, retval; |
| 138 | |
| 139 | /* Disable interrupts which might cause a timeout here */ |
| 140 | flag = disable_interrupts (); |
| 141 | |
| 142 | *addr = BANK_CMD_PROG; |
| 143 | |
| 144 | *addr = value; |
| 145 | |
| 146 | /* re-enable interrupts if necessary */ |
| 147 | if (flag) |
| 148 | enable_interrupts (); |
| 149 | |
| 150 | retval = 0; |
| 151 | |
| 152 | /* data polling for D7 */ |
| 153 | start = get_timer (0); |
| 154 | do { |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame^] | 155 | if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
wdenk | 3a473b2 | 2004-01-03 00:43:19 +0000 | [diff] [blame] | 156 | retval = 1; |
| 157 | goto done; |
| 158 | } |
| 159 | stat = *addr; |
| 160 | } while ((stat & BANK_STAT_RDY) != BANK_STAT_RDY); |
| 161 | |
| 162 | if ((stat & BANK_STAT_ERR) != 0) { |
| 163 | printf ("flash program failed (stat = 0x%08lx) " |
| 164 | "at address 0x%08lx\n", (ulong) stat, (ulong) addr); |
| 165 | *addr = BANK_CMD_CLR_STAT; |
| 166 | retval = 3; |
| 167 | } |
| 168 | |
| 169 | done: |
| 170 | /* reset to read mode */ |
| 171 | *addr = BANK_CMD_RST; |
| 172 | |
| 173 | return (retval); |
| 174 | } |
| 175 | |
| 176 | /*----------------------------------------------------------------------- |
| 177 | */ |
| 178 | |
| 179 | int flash_erase_intel (flash_info_t * info, int s_first, int s_last) |
| 180 | { |
| 181 | int prot, sect, haderr; |
| 182 | ulong start, now, last; |
| 183 | |
| 184 | #ifdef FLASH_DEBUG |
| 185 | printf ("\nflash_erase: erase %d sectors (%d to %d incl.) from\n" |
| 186 | " Bank # %d: ", s_last - s_first + 1, s_first, s_last, |
| 187 | (info - flash_info) + 1); |
| 188 | flash_print_info (info); |
| 189 | #endif |
| 190 | |
| 191 | if ((s_first < 0) || (s_first > s_last)) { |
| 192 | if (info->flash_id == FLASH_UNKNOWN) { |
| 193 | printf ("- missing\n"); |
| 194 | } else { |
| 195 | printf ("- no sectors to erase\n"); |
| 196 | } |
| 197 | return 1; |
| 198 | } |
| 199 | |
| 200 | prot = 0; |
| 201 | for (sect = s_first; sect <= s_last; ++sect) { |
| 202 | if (info->protect[sect]) { |
| 203 | prot++; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | if (prot) { |
| 208 | printf ("- Warning: %d protected sector%s will not be erased!\n", prot, (prot > 1 ? "s" : "")); |
| 209 | } |
| 210 | |
| 211 | start = get_timer (0); |
| 212 | last = 0; |
| 213 | haderr = 0; |
| 214 | |
| 215 | for (sect = s_first; sect <= s_last; sect++) { |
| 216 | if (info->protect[sect] == 0) { /* not protected */ |
| 217 | ulong estart; |
| 218 | int sectdone; |
| 219 | |
| 220 | bank_erase_init (info, sect); |
| 221 | |
| 222 | /* wait at least 80us - let's wait 1 ms */ |
| 223 | udelay (1000); |
| 224 | |
| 225 | estart = get_timer (start); |
| 226 | |
| 227 | do { |
| 228 | now = get_timer (start); |
| 229 | |
Jean-Christophe PLAGNIOL-VILLARD | 6d0f6bc | 2008-10-16 15:01:15 +0200 | [diff] [blame^] | 230 | if (now - estart > CONFIG_SYS_FLASH_ERASE_TOUT) { |
wdenk | 3a473b2 | 2004-01-03 00:43:19 +0000 | [diff] [blame] | 231 | printf ("Timeout (sect %d)\n", sect); |
| 232 | haderr = 1; |
| 233 | break; |
| 234 | } |
| 235 | #ifndef FLASH_DEBUG |
| 236 | /* show that we're waiting */ |
| 237 | if ((now - last) > 1000) { /* every second */ |
| 238 | putc ('.'); |
| 239 | last = now; |
| 240 | } |
| 241 | #endif |
| 242 | |
| 243 | sectdone = bank_erase_poll (info, sect); |
| 244 | |
| 245 | if (sectdone < 0) { |
| 246 | haderr = 1; |
| 247 | break; |
| 248 | } |
| 249 | |
| 250 | } while (!sectdone); |
| 251 | |
| 252 | if (haderr) |
| 253 | break; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | if (haderr > 0) |
| 258 | printf (" failed\n"); |
| 259 | else |
| 260 | printf (" done\n"); |
| 261 | |
| 262 | /* reset to read mode */ |
| 263 | for (sect = s_first; sect <= s_last; sect++) { |
| 264 | if (info->protect[sect] == 0) { /* not protected */ |
| 265 | bank_reset (info, sect); |
| 266 | } |
| 267 | } |
| 268 | return haderr; |
| 269 | } |