boards (baudrate, environment...). Flash driver fixed. Patch by Stefan Roese, 11 Aug 2005master
Stefan Roese
20 years ago
parent
9e00589bdd
commit
84286386a8
@ -1,571 +0,0 @@ |
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/*
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* (C) Copyright 2002-2004 |
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
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* |
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* (C) Copyright 2002 Jun Gu <jung@artesyncp.com> |
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* Add support for Am29F016D and dynamic switch setting. |
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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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/*
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* Ported to XPedite1000, 1/2 mb boot flash only |
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* Travis B. Sawyer, <travis.sawyer@sandburst.com> |
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*/ |
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#include <common.h> |
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#include <ppc4xx.h> |
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#include <asm/processor.h> |
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#undef DEBUG |
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#ifdef DEBUG |
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#define DEBUGF(x...) printf(x) |
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#else |
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#define DEBUGF(x...) |
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#endif /* DEBUG */ |
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|
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#define BOOT_SMALL_FLASH 32 /* 00100000 */ |
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#define FLASH_ONBD_N 2 /* 00000010 */ |
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#define FLASH_SRAM_SEL 1 /* 00000001 */ |
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|
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#define BOOT_SMALL_FLASH_VAL 4 |
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#define FLASH_ONBD_N_VAL 2 |
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#define FLASH_SRAM_SEL_VAL 1 |
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
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unsigned long flash_addr_table[512][CFG_MAX_FLASH_BANKS] = { |
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{0xfe000000} |
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}; |
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|
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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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#define ADDR0 0xaaaa |
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#define ADDR1 0x5554 |
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#define FLASH_WORD_SIZE unsigned short |
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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 total_b = 0; |
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unsigned long size_b[CFG_MAX_FLASH_BANKS]; |
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unsigned short index = 0; |
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int i; |
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DEBUGF("\n"); |
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DEBUGF("FLASH: Index: %d\n", index); |
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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].sector_count = -1; |
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flash_info[i].size = 0; |
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/* check whether the address is 0 */ |
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if (flash_addr_table[index][i] == 0) { |
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continue; |
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} |
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/* call flash_get_size() to initialize sector address */ |
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size_b[i] = flash_get_size((vu_long *) |
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flash_addr_table[index][i], |
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&flash_info[i]); |
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flash_info[i].size = size_b[i]; |
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if (flash_info[i].flash_id == FLASH_UNKNOWN) { |
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printf |
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("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", |
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i, size_b[i], size_b[i] << 20); |
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flash_info[i].sector_count = -1; |
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flash_info[i].size = 0; |
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} |
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total_b += flash_info[i].size; |
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} |
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/* FLASH protect Monitor */ |
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flash_protect(FLAG_PROTECT_SET, |
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CFG_MONITOR_BASE, 0xFFFFFFFF, &flash_info[0]); |
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return total_b; |
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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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int k; |
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int size; |
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int erased; |
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volatile unsigned long *flash; |
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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: |
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printf("AMD "); |
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break; |
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case FLASH_MAN_FUJ: |
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printf("FUJITSU "); |
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break; |
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case FLASH_MAN_SST: |
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printf("SST "); |
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break; |
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default: |
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printf("Unknown Vendor "); |
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break; |
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} |
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switch (info->flash_id & FLASH_TYPEMASK) { |
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case FLASH_AMD016: |
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printf("AM29F016D (16 Mbit, uniform sector size)\n"); |
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break; |
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case FLASH_AM040: |
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printf("AM29F040 (512 Kbit, uniform sector size)\n"); |
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break; |
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case FLASH_AM400B: |
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printf("AM29LV400B (4 Mbit, bottom boot sect)\n"); |
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break; |
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case FLASH_AM400T: |
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printf("AM29LV400T (4 Mbit, top boot sector)\n"); |
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break; |
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case FLASH_AM800B: |
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printf("AM29LV800B (8 Mbit, bottom boot sect)\n"); |
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break; |
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case FLASH_AM800T: |
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printf("AM29LV800T (8 Mbit, top boot sector)\n"); |
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break; |
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case FLASH_AM160B: |
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printf("AM29LV160B (16 Mbit, bottom boot sect)\n"); |
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break; |
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case FLASH_AM160T: |
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printf("AM29LV160T (16 Mbit, top boot sector)\n"); |
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break; |
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case FLASH_AM320B: |
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printf("AM29LV320B (32 Mbit, bottom boot sect)\n"); |
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break; |
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case FLASH_AM320T: |
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printf("AM29LV320T (32 Mbit, top boot sector)\n"); |
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break; |
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case FLASH_SST800A: |
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printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n"); |
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break; |
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case FLASH_SST160A: |
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printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n"); |
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break; |
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default: |
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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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/*
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* Check if whole sector is erased |
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*/ |
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if (i != (info->sector_count - 1)) |
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size = info->start[i + 1] - info->start[i]; |
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else |
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size = info->start[0] + info->size - info->start[i]; |
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erased = 1; |
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flash = (volatile unsigned long *)info->start[i]; |
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size = size >> 2; /* divide by 4 for longword access */ |
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for (k = 0; k < size; k++) { |
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if (*flash++ != 0xffffffff) { |
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erased = 0; |
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break; |
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} |
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} |
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if ((i % 5) == 0) |
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printf("\n "); |
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printf(" %08lX%s%s", |
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info->start[i], |
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erased ? " E" : " ", info->protect[i] ? "RO " : " "); |
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} |
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printf("\n"); |
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return; |
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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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DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr); |
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/* Write auto select command: read Manufacturer ID */ |
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udelay(10000); |
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*(FLASH_WORD_SIZE *) ((int)addr + ADDR0) = (FLASH_WORD_SIZE) 0x00AA; |
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udelay(1000); |
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*(FLASH_WORD_SIZE *) ((int)addr + ADDR1) = (FLASH_WORD_SIZE) 0x0055; |
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udelay(1000); |
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*(FLASH_WORD_SIZE *) ((int)addr + ADDR0) = (FLASH_WORD_SIZE) 0x0090; |
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udelay(1000); |
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value = addr2[0]; |
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DEBUGF("FLASH MANUFACT: %x\n", value); |
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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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case (FLASH_WORD_SIZE) STM_MANUFACT: |
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info->flash_id = FLASH_MAN_STM; |
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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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#ifdef CONFIG_ADCIOP |
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value = addr2[0]; /* device ID */ |
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debug("\ndev_code=%x\n", value); |
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#else |
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value = addr2[1]; /* device ID */ |
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#endif |
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DEBUGF("\nFLASH DEVICEID: %x\n", value); |
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info->flash_id = 0; |
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info->sector_count = CFG_MAX_FLASH_SECT; |
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info->size = 0x02000000; |
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/* set up sector start address table */ |
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for (i = 0; i < info->sector_count; i++) { |
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info->start[i] = (int)base + (i * 0x00020000); |
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info->protect[i] = 0; |
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} |
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*(FLASH_WORD_SIZE *) ((int)addr) = (FLASH_WORD_SIZE) 0x00F0; /* reset bank */ |
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return (info->size); |
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} |
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int wait_for_DQ7(flash_info_t * info, int sect) |
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{ |
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ulong start, now, last; |
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volatile FLASH_WORD_SIZE *addr = |
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(FLASH_WORD_SIZE *) (info->start[sect]); |
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start = get_timer(0); |
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last = start; |
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while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) != |
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(FLASH_WORD_SIZE) 0x00800080) { |
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if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { |
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printf("Timeout\n"); |
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return -1; |
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} |
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/* show that we're waiting */ |
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if ((now - last) > 1000) { /* every second */ |
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putc('.'); |
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last = now; |
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} |
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} |
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return 0; |
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} |
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/*-----------------------------------------------------------------------
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*/ |
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int flash_erase(flash_info_t * info, int s_first, int s_last) |
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{ |
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volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]); |
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volatile FLASH_WORD_SIZE *addr2; |
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int flag, prot, sect, l_sect; |
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if ((s_first < 0) || (s_first > s_last)) { |
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if (info->flash_id == FLASH_UNKNOWN) { |
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printf("- missing\n"); |
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} else { |
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printf("- no sectors to erase\n"); |
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} |
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return 1; |
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} |
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if (info->flash_id == FLASH_UNKNOWN) { |
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printf("Can't erase unknown flash type - aborted\n"); |
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return 1; |
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} |
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prot = 0; |
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for (sect = s_first; sect <= s_last; ++sect) { |
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if (info->protect[sect]) { |
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prot++; |
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} |
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} |
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if (prot) { |
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printf("- Warning: %d protected sectors will not be erased!\n", |
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prot); |
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} else { |
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printf("\n"); |
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} |
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l_sect = -1; |
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/* Disable interrupts which might cause a timeout here */ |
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flag = disable_interrupts(); |
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/* Start erase on unprotected sectors */ |
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for (sect = s_first; sect <= s_last; sect++) { |
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if (info->protect[sect] == 0) { /* not protected */ |
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addr2 = (FLASH_WORD_SIZE *) (info->start[sect]); |
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printf("Erasing sector %p\n", addr2); |
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*(FLASH_WORD_SIZE *) ((int)addr + ADDR0) = |
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(FLASH_WORD_SIZE) 0x00AA; |
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asm("sync"); |
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asm("isync"); |
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*(FLASH_WORD_SIZE *) ((int)addr + ADDR1) = |
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(FLASH_WORD_SIZE) 0x0055; |
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asm("sync"); |
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asm("isync"); |
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*(FLASH_WORD_SIZE *) ((int)addr + ADDR0) = |
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(FLASH_WORD_SIZE) 0x0080; |
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asm("sync"); |
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asm("isync"); |
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*(FLASH_WORD_SIZE *) ((int)addr + ADDR0) = |
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(FLASH_WORD_SIZE) 0x00AA; |
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asm("sync"); |
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asm("isync"); |
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*(FLASH_WORD_SIZE *) ((int)addr + ADDR1) = |
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(FLASH_WORD_SIZE) 0x0055; |
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asm("sync"); |
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asm("isync"); |
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addr2[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */ |
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asm("sync"); |
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asm("isync"); |
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l_sect = sect; |
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/*
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* Wait for each sector to complete, it's more |
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* reliable. According to AMD Spec, you must |
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* issue all erase commands within a specified |
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* timeout. This has been seen to fail, especially |
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* if printf()s are included (for debug)!! |
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*/ |
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wait_for_DQ7(info, sect); |
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} |
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} |
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/* re-enable interrupts if necessary */ |
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if (flag) |
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enable_interrupts(); |
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/* wait at least 80us - let's wait 1 ms */ |
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udelay(1000); |
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#if 0 |
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/*
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* We wait for the last triggered sector |
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*/ |
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if (l_sect < 0) |
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goto DONE; |
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wait_for_DQ7(info, l_sect); |
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DONE: |
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#endif |
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/* reset to read mode */ |
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addr = (FLASH_WORD_SIZE *) info->start[0]; |
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addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */ |
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printf(" done\n"); |
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return 0; |
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} |
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/*-----------------------------------------------------------------------
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* Copy memory to flash, returns: |
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* 0 - OK |
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* 1 - write timeout |
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* 2 - Flash not erased |
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*/ |
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int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
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{ |
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ulong cp, wp, data; |
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int i, l, rc; |
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ulong status_value = 0; |
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wp = (addr & ~3); /* get lower word aligned address */ |
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/*
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* handle unaligned start bytes |
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*/ |
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if ((l = addr - wp) != 0) { |
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data = 0; |
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for (i = 0, cp = wp; i < l; ++i, ++cp) { |
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data = (data << 8) | (*(uchar *) cp); |
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} |
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for (; i < 4 && cnt > 0; ++i) { |
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data = (data << 8) | *src++; |
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--cnt; |
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++cp; |
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} |
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for (; cnt == 0 && i < 4; ++i, ++cp) { |
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data = (data << 8) | (*(uchar *) cp); |
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} |
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if ((rc = write_word(info, wp, data)) != 0) { |
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return (rc); |
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} |
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wp += 4; |
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} |
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/*
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* handle word aligned part |
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*/ |
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while (cnt >= 4) { |
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/*print status if needed */ |
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if ((wp >= (status_value + 0x20000)) |
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&& (status_value < 0xFFFE0000)) { |
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status_value = wp; |
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printf("writing to sector 0x%X\n", status_value); |
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} |
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data = 0; |
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for (i = 0; i < 4; ++i) { |
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data = (data << 8) | *src++; |
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} |
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if ((rc = write_word(info, wp, data)) != 0) { |
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return (rc); |
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} |
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wp += 4; |
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cnt -= 4; |
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} |
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if (cnt == 0) { |
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return (0); |
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} |
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/*
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* handle unaligned tail bytes |
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*/ |
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data = 0; |
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for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) { |
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data = (data << 8) | *src++; |
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--cnt; |
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} |
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for (; i < 4; ++i, ++cp) { |
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data = (data << 8) | (*(uchar *) cp); |
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} |
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return (write_word(info, wp, data)); |
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} |
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/*-----------------------------------------------------------------------
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* Write a word to Flash, returns: |
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* 0 - OK |
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* 1 - write timeout |
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* 2 - Flash not erased |
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*/ |
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static int write_word(flash_info_t * info, ulong dest, ulong data) |
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{ |
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vu_long *addr2 = (vu_long *) (info->start[0]); |
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volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest; |
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volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data; |
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ulong start; |
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int i; |
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/* Check if Flash is (sufficiently) erased */ |
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if ((*((volatile FLASH_WORD_SIZE *)dest) & |
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(FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) { |
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return (2); |
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} |
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for (i = 0; i < 4 / sizeof(FLASH_WORD_SIZE); i++) { |
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int flag; |
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/* Disable interrupts which might cause a timeout here */ |
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flag = disable_interrupts(); |
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*(FLASH_WORD_SIZE *) ((int)addr2 + ADDR0) = |
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(FLASH_WORD_SIZE) 0x00AA; |
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asm("sync"); |
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asm("isync"); |
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*(FLASH_WORD_SIZE *) ((int)addr2 + ADDR1) = |
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(FLASH_WORD_SIZE) 0x0055; |
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asm("sync"); |
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asm("isync"); |
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*(FLASH_WORD_SIZE *) ((int)addr2 + ADDR0) = |
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(FLASH_WORD_SIZE) 0x00A0; |
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asm("sync"); |
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asm("isync"); |
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dest2[i] = data2[i]; |
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/* re-enable interrupts if necessary */ |
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if (flag) |
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enable_interrupts(); |
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/* data polling for D7 */ |
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start = get_timer(0); |
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while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) != |
||||
(data2[i] & (FLASH_WORD_SIZE) 0x00800080)) { |
||||
|
||||
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { |
||||
return (1); |
||||
} |
||||
} |
||||
} |
||||
|
||||
return (0); |
||||
} |
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
*/ |
||||
Loading…
Reference in new issue