598 lines
15 KiB
C
598 lines
15 KiB
C
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/*
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* (C) Copyright 2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Modified 4/5/2001
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* Wait for completion of each sector erase command issued
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* 4/5/2001
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* Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
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*/
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#include <asm/u-boot.h>
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#include <asm/processor.h>
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#include <ppc4xx.h>
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#include <common.h>
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
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/*-----------------------------------------------------------------------
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* Functions
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*/
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static ulong flash_get_size (vu_long *addr, flash_info_t *info);
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static int write_word (flash_info_t *info, ulong dest, ulong data);
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#ifdef MEIGSBOARD_ONBOARD_FLASH /* onboard = 2MB */
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# ifdef CONFIG_EXBITGEN
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# define FLASH_WORD_SIZE unsigned long
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# endif
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#else /* Meigsboard socket flash = 512KB */
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# ifdef CONFIG_EXBITGEN
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# define FLASH_WORD_SIZE unsigned char
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# endif
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#endif
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#ifdef CONFIG_EXBITGEN
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#define ADDR0 0x5555
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#define ADDR1 0x2aaa
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#define FLASH_WORD_SIZE unsigned char
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#endif
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/*-----------------------------------------------------------------------
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*/
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unsigned long flash_init (void)
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{
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unsigned long bank_size;
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unsigned long tot_size;
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unsigned long bank_addr;
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int i;
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/* Init: no FLASHes known */
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for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
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flash_info[i].flash_id = FLASH_UNKNOWN;
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flash_info[i].size = 0;
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}
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tot_size = 0;
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/* Detect Boot Flash */
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bank_addr = CFG_FLASH0_BASE;
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bank_size = flash_get_size((vu_long *)bank_addr, &flash_info[0]);
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if (bank_size > 0) {
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(void)flash_protect(FLAG_PROTECT_CLEAR,
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bank_addr,
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bank_addr + bank_size - 1,
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&flash_info[0]);
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}
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if (flash_info[0].flash_id == FLASH_UNKNOWN) {
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printf ("## Unknown FLASH on Boot Flash Bank\n");
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}
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flash_info[0].size = bank_size;
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tot_size += bank_size;
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/* Detect Application Flash */
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bank_addr = CFG_FLASH1_BASE;
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for (i = 1; i < CFG_MAX_FLASH_BANKS; ++i) {
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bank_size = flash_get_size((vu_long *)bank_addr, &flash_info[i]);
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if (flash_info[i].flash_id == FLASH_UNKNOWN) {
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break;
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}
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if (bank_size > 0) {
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(void)flash_protect(FLAG_PROTECT_CLEAR,
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bank_addr,
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bank_addr + bank_size - 1,
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&flash_info[i]);
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}
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flash_info[i].size = bank_size;
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tot_size += bank_size;
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bank_addr += bank_size;
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}
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if (flash_info[1].flash_id == FLASH_UNKNOWN) {
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printf ("## Unknown FLASH on Application Flash Bank\n");
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}
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/* Protect monitor and environment sectors */
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#if CFG_MONITOR_BASE >= CFG_FLASH0_BASE
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flash_protect(FLAG_PROTECT_SET,
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CFG_MONITOR_BASE,
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CFG_MONITOR_BASE + monitor_flash_len - 1,
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&flash_info[0]);
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#if 0xfffffffc >= CFG_FLASH0_BASE
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#if 0xfffffffc <= CFG_FLASH0_BASE + CFG_FLASH0_SIZE - 1
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flash_protect(FLAG_PROTECT_SET,
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0xfffffffc, 0xffffffff,
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&flash_info[0]);
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#endif
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#endif
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#endif
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#if (CFG_ENV_IS_IN_FLASH == 1) && defined(CFG_ENV_ADDR)
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flash_protect(FLAG_PROTECT_SET,
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CFG_ENV_ADDR,
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CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
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&flash_info[0]);
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#endif
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return tot_size;
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}
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/*-----------------------------------------------------------------------
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*/
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void flash_print_info (flash_info_t *info)
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{
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int i;
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if (info->flash_id == FLASH_UNKNOWN) {
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printf ("missing or unknown FLASH type\n");
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return;
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}
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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_AMD: printf ("AMD "); break;
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case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
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case FLASH_MAN_SST: printf ("SST "); break;
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default: printf ("Unknown Vendor "); break;
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}
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AM040: printf ("AM29F040 (512 Kbit, uniform sector size)\n");
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break;
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case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
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break;
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case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
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break;
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case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
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break;
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case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
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break;
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case FLASH_AMDLV033C: printf ("AM29LV033C (32 Mbit, uniform sector size)\n");
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break;
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case FLASH_AMDLV065D: printf ("AM29LV065D (64 Mbit, uniform sector size)\n");
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break;
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case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
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break;
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case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
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break;
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case FLASH_SST040: printf ("SST39LF/VF040 (4 Mbit, uniform sector size)\n");
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break;
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default: printf ("Unknown Chip Type\n");
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break;
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}
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printf (" Size: %ld KB in %d Sectors\n",
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info->size >> 10, info->sector_count);
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printf (" Sector Start Addresses:");
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for (i=0; i<info->sector_count; ++i) {
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if ((i % 5) == 0)
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printf ("\n ");
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printf (" %08lX%s",
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info->start[i],
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info->protect[i] ? " (RO)" : " "
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);
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}
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printf ("\n");
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}
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/*-----------------------------------------------------------------------
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*/
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/*-----------------------------------------------------------------------
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*/
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/*
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* The following code cannot be run from FLASH!
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*/
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static ulong flash_get_size (vu_long *addr, flash_info_t *info)
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{
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short i;
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FLASH_WORD_SIZE value;
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ulong base = (ulong)addr;
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volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)addr;
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/* Write auto select command: read Manufacturer ID */
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addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
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addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;
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value = addr2[0];
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switch (value) {
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case (FLASH_WORD_SIZE)AMD_MANUFACT:
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info->flash_id = FLASH_MAN_AMD;
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break;
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case (FLASH_WORD_SIZE)FUJ_MANUFACT:
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info->flash_id = FLASH_MAN_FUJ;
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break;
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case (FLASH_WORD_SIZE)SST_MANUFACT:
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info->flash_id = FLASH_MAN_SST;
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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info->sector_count = 0;
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info->size = 0;
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return (0); /* no or unknown flash */
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}
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value = addr2[1]; /* device ID */
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switch (value) {
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case (FLASH_WORD_SIZE)AMD_ID_F040B:
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info->flash_id += FLASH_AM040;
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info->sector_count = 8;
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info->size = 0x0080000; /* => 512 ko */
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break;
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case (FLASH_WORD_SIZE)AMD_ID_LV400T:
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info->flash_id += FLASH_AM400T;
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info->sector_count = 11;
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info->size = 0x00080000;
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break; /* => 0.5 MB */
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case (FLASH_WORD_SIZE)AMD_ID_LV400B:
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info->flash_id += FLASH_AM400B;
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info->sector_count = 11;
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info->size = 0x00080000;
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break; /* => 0.5 MB */
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case (FLASH_WORD_SIZE)AMD_ID_LV800T:
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info->flash_id += FLASH_AM800T;
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info->sector_count = 19;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case (FLASH_WORD_SIZE)AMD_ID_LV800B:
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info->flash_id += FLASH_AM800B;
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info->sector_count = 19;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case (FLASH_WORD_SIZE)AMD_ID_LV160T:
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info->flash_id += FLASH_AM160T;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 2 MB */
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case (FLASH_WORD_SIZE)AMD_ID_LV160B:
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info->flash_id += FLASH_AM160B;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 2 MB */
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case (FLASH_WORD_SIZE)AMD_ID_LV033C:
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info->flash_id += FLASH_AMDLV033C;
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info->sector_count = 64;
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info->size = 0x00400000;
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break; /* => 4 MB */
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case (FLASH_WORD_SIZE)AMD_ID_LV065D:
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info->flash_id += FLASH_AMDLV065D;
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info->sector_count = 128;
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info->size = 0x00800000;
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break; /* => 8 MB */
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case (FLASH_WORD_SIZE)AMD_ID_LV320T:
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info->flash_id += FLASH_AM320T;
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info->sector_count = 67;
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info->size = 0x00400000;
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break; /* => 4 MB */
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case (FLASH_WORD_SIZE)AMD_ID_LV320B:
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info->flash_id += FLASH_AM320B;
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info->sector_count = 67;
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info->size = 0x00400000;
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break; /* => 4 MB */
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case (FLASH_WORD_SIZE)SST_ID_xF800A:
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info->flash_id += FLASH_SST800A;
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info->sector_count = 16;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case (FLASH_WORD_SIZE)SST_ID_xF160A:
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info->flash_id += FLASH_SST160A;
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info->sector_count = 32;
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info->size = 0x00200000;
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break; /* => 2 MB */
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case (FLASH_WORD_SIZE)SST_ID_xF040:
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info->flash_id += FLASH_SST040;
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info->sector_count = 128;
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info->size = 0x00080000;
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break; /* => 512KB */
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default:
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info->flash_id = FLASH_UNKNOWN;
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return (0); /* => no or unknown flash */
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}
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/* set up sector start address table */
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if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
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(info->flash_id == FLASH_AM040) ||
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(info->flash_id == FLASH_AMDLV033C) ||
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(info->flash_id == FLASH_AMDLV065D)) {
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ulong sectsize = info->size / info->sector_count;
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * sectsize);
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} else {
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if (info->flash_id & FLASH_BTYPE) {
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/* set sector offsets for bottom boot block type */
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info->start[0] = base + 0x00000000;
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info->start[1] = base + 0x00004000;
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info->start[2] = base + 0x00006000;
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info->start[3] = base + 0x00008000;
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] = base + (i * 0x00010000) - 0x00030000;
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}
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} else {
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/* set sector offsets for top boot block type */
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i = info->sector_count - 1;
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info->start[i--] = base + info->size - 0x00004000;
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info->start[i--] = base + info->size - 0x00006000;
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|
|
info->start[i--] = base + info->size - 0x00008000;
|
||
|
|
for (; i >= 0; i--) {
|
||
|
|
info->start[i] = base + i * 0x00010000;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* check for protected sectors */
|
||
|
|
for (i = 0; i < info->sector_count; i++) {
|
||
|
|
/* read sector protection at sector address, (A7 .. A0) = 0x02 */
|
||
|
|
/* D0 = 1 if protected */
|
||
|
|
|
||
|
|
addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
|
||
|
|
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
|
||
|
|
info->protect[i] = 0;
|
||
|
|
else
|
||
|
|
info->protect[i] = addr2[2] & 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* switch to the read mode */
|
||
|
|
if (info->flash_id != FLASH_UNKNOWN) {
|
||
|
|
addr2 = (FLASH_WORD_SIZE *)info->start[0];
|
||
|
|
*addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
|
||
|
|
}
|
||
|
|
|
||
|
|
return (info->size);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------
|
||
|
|
*/
|
||
|
|
|
||
|
|
int flash_erase (flash_info_t *info, int s_first, int s_last)
|
||
|
|
{
|
||
|
|
volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]);
|
||
|
|
volatile FLASH_WORD_SIZE *addr2;
|
||
|
|
int flag, prot, sect;
|
||
|
|
ulong start, now, last;
|
||
|
|
|
||
|
|
if ((s_first < 0) || (s_first > s_last)) {
|
||
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
||
|
|
printf ("- missing\n");
|
||
|
|
} else {
|
||
|
|
printf ("- no sectors to erase\n");
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (info->flash_id == FLASH_UNKNOWN) {
|
||
|
|
printf ("Can't erase unknown flash type - aborted\n");
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
prot = 0;
|
||
|
|
for (sect=s_first; sect<=s_last; ++sect) {
|
||
|
|
if (info->protect[sect]) {
|
||
|
|
prot++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (prot) {
|
||
|
|
printf ("- Warning: %d protected sectors will not be erased!\n",
|
||
|
|
prot);
|
||
|
|
} else {
|
||
|
|
printf ("\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
start = get_timer (0);
|
||
|
|
last = start;
|
||
|
|
/* Start erase on unprotected sectors */
|
||
|
|
for (sect = s_first; sect <= s_last; sect++) {
|
||
|
|
if (info->protect[sect] == 0) { /* not protected */
|
||
|
|
addr2 = (FLASH_WORD_SIZE *)(info->start[sect]);
|
||
|
|
|
||
|
|
/* Disable interrupts which might cause a timeout here */
|
||
|
|
flag = disable_interrupts();
|
||
|
|
|
||
|
|
addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
|
||
|
|
addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
|
||
|
|
addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
|
||
|
|
addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
|
||
|
|
addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
|
||
|
|
addr2[0] = (FLASH_WORD_SIZE)0x00300030;
|
||
|
|
|
||
|
|
/* re-enable interrupts if necessary */
|
||
|
|
if (flag)
|
||
|
|
enable_interrupts();
|
||
|
|
|
||
|
|
/* wait at least 80us - let's wait 1 ms */
|
||
|
|
udelay (1000);
|
||
|
|
|
||
|
|
while ((addr2[0] & 0x00800080) !=
|
||
|
|
(FLASH_WORD_SIZE) 0x00800080) {
|
||
|
|
if ((now=get_timer(start)) >
|
||
|
|
CFG_FLASH_ERASE_TOUT) {
|
||
|
|
printf ("Timeout\n");
|
||
|
|
addr[0] = (FLASH_WORD_SIZE)0x00F000F0;
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* show that we're waiting */
|
||
|
|
if ((now - last) > 1000) { /* every second */
|
||
|
|
putc ('.');
|
||
|
|
last = now;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
addr[0] = (FLASH_WORD_SIZE)0x00F000F0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
printf (" done\n");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------
|
||
|
|
* Copy memory to flash, returns:
|
||
|
|
* 0 - OK
|
||
|
|
* 1 - write timeout
|
||
|
|
* 2 - Flash not erased
|
||
|
|
*/
|
||
|
|
|
||
|
|
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
||
|
|
{
|
||
|
|
ulong cp, wp, data;
|
||
|
|
int i, l, rc;
|
||
|
|
|
||
|
|
wp = (addr & ~3); /* get lower word aligned address */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* handle unaligned start bytes
|
||
|
|
*/
|
||
|
|
if ((l = addr - wp) != 0) {
|
||
|
|
data = 0;
|
||
|
|
for (i=0, cp=wp; i<l; ++i, ++cp) {
|
||
|
|
data = (data << 8) | (*(uchar *)cp);
|
||
|
|
}
|
||
|
|
for (; i<4 && cnt>0; ++i) {
|
||
|
|
data = (data << 8) | *src++;
|
||
|
|
--cnt;
|
||
|
|
++cp;
|
||
|
|
}
|
||
|
|
for (; cnt==0 && i<4; ++i, ++cp) {
|
||
|
|
data = (data << 8) | (*(uchar *)cp);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
||
|
|
return (rc);
|
||
|
|
}
|
||
|
|
wp += 4;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* handle word aligned part
|
||
|
|
*/
|
||
|
|
while (cnt >= 4) {
|
||
|
|
data = 0;
|
||
|
|
for (i=0; i<4; ++i) {
|
||
|
|
data = (data << 8) | *src++;
|
||
|
|
}
|
||
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
||
|
|
return (rc);
|
||
|
|
}
|
||
|
|
wp += 4;
|
||
|
|
cnt -= 4;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (cnt == 0) {
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* handle unaligned tail bytes
|
||
|
|
*/
|
||
|
|
data = 0;
|
||
|
|
for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
|
||
|
|
data = (data << 8) | *src++;
|
||
|
|
--cnt;
|
||
|
|
}
|
||
|
|
for (; i<4; ++i, ++cp) {
|
||
|
|
data = (data << 8) | (*(uchar *)cp);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (write_word(info, wp, data));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------
|
||
|
|
* Write a word to Flash, returns:
|
||
|
|
* 0 - OK
|
||
|
|
* 1 - write timeout
|
||
|
|
* 2 - Flash not erased
|
||
|
|
*/
|
||
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data)
|
||
|
|
{
|
||
|
|
volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)(info->start[0]);
|
||
|
|
volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *)dest;
|
||
|
|
volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data;
|
||
|
|
ulong start;
|
||
|
|
int flag;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
/* Check if Flash is (sufficiently) erased */
|
||
|
|
if ((*((volatile ulong *)dest) & data) != data) {
|
||
|
|
printf("dest = %08lx, *dest = %08lx, data = %08lx\n",
|
||
|
|
dest, *(volatile ulong *)dest, data);
|
||
|
|
return 2;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i=0; i < 4/sizeof(FLASH_WORD_SIZE); i++) {
|
||
|
|
/* Disable interrupts which might cause a timeout here */
|
||
|
|
flag = disable_interrupts();
|
||
|
|
|
||
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
|
||
|
|
addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
|
||
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE)0x00A000A0;
|
||
|
|
dest2[i] = data2[i];
|
||
|
|
|
||
|
|
/* re-enable interrupts if necessary */
|
||
|
|
if (flag)
|
||
|
|
enable_interrupts();
|
||
|
|
|
||
|
|
/* data polling for D7 */
|
||
|
|
start = get_timer (0);
|
||
|
|
while ((dest2[i] & 0x00800080) != (data2[i] & 0x00800080)) {
|
||
|
|
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
||
|
|
addr2[0] = (FLASH_WORD_SIZE)0x00F000F0;
|
||
|
|
return (1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
addr2[0] = (FLASH_WORD_SIZE)0x00F000F0;
|
||
|
|
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------
|
||
|
|
*/
|