mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
485 lines
12 KiB
C
485 lines
12 KiB
C
/*
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* U-boot - flash.c Flash driver for PSD4256GV
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*
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* Copyright (c) 2005-2007 Analog Devices Inc.
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* This file is based on BF533EzFlash.c originally written by Analog Devices, Inc.
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*
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* (C) Copyright 2000-2004
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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., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#include <asm/io.h>
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#include "flash-defines.h"
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void flash_reset(void)
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{
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reset_flash();
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}
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unsigned long flash_get_size(ulong baseaddr, flash_info_t * info, int bank_flag)
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{
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int id = 0, i = 0;
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static int FlagDev = 1;
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id = get_codes();
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if (FlagDev) {
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#ifdef DEBUG
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printf("Device ID of the Flash is %x\n", id);
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#endif
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FlagDev = 0;
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}
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info->flash_id = id;
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switch (bank_flag) {
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case 0:
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for (i = PriFlashABegin; i < SecFlashABegin; i++)
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info->start[i] = (baseaddr + (i * AFP_SectorSize1));
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info->size = 0x200000;
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info->sector_count = 32;
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break;
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case 1:
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info->start[0] = baseaddr + SecFlashASec1Off;
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info->start[1] = baseaddr + SecFlashASec2Off;
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info->start[2] = baseaddr + SecFlashASec3Off;
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info->start[3] = baseaddr + SecFlashASec4Off;
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info->size = 0x10000;
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info->sector_count = 4;
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break;
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case 2:
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info->start[0] = baseaddr + SecFlashBSec1Off;
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info->start[1] = baseaddr + SecFlashBSec2Off;
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info->start[2] = baseaddr + SecFlashBSec3Off;
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info->start[3] = baseaddr + SecFlashBSec4Off;
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info->size = 0x10000;
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info->sector_count = 4;
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break;
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}
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return (info->size);
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}
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unsigned long flash_init(void)
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{
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unsigned long size_b0, size_b1, size_b2;
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int i;
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size_b0 = size_b1 = size_b2 = 0;
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#ifdef DEBUG
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printf("Flash Memory Start 0x%x\n", CONFIG_SYS_FLASH_BASE);
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printf("Memory Map for the Flash\n");
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printf("0x20000000 - 0x200FFFFF Flash A Primary (1MB)\n");
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printf("0x20100000 - 0x201FFFFF Flash B Primary (1MB)\n");
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printf("0x20200000 - 0x2020FFFF Flash A Secondary (64KB)\n");
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printf("0x20280000 - 0x2028FFFF Flash B Secondary (64KB)\n");
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printf("Please type command flinfo for information on Sectors \n");
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#endif
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for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
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flash_info[i].flash_id = FLASH_UNKNOWN;
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}
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size_b0 = flash_get_size(CONFIG_SYS_FLASH0_BASE, &flash_info[0], 0);
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size_b1 = flash_get_size(CONFIG_SYS_FLASH0_BASE, &flash_info[1], 1);
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size_b2 = flash_get_size(CONFIG_SYS_FLASH0_BASE, &flash_info[2], 2);
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if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) {
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printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
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size_b0, size_b0 >> 20);
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}
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(void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_FLASH0_BASE,
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(flash_info[0].start[2] - 1), &flash_info[0]);
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return (size_b0 + size_b1 + size_b2);
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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) {
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case FLASH_PSD4256GV:
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printf("ST Microelectronics ");
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break;
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default:
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printf("Unknown Vendor: (0x%08X) ", info->flash_id);
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break;
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}
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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], 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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int flash_erase(flash_info_t * info, int s_first, int s_last)
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{
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int cnt = 0, i;
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int prot, sect;
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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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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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cnt = s_last - s_first + 1;
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if (cnt == FLASH_TOT_SECT) {
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printf("Erasing flash, Please Wait \n");
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if (erase_flash() < 0) {
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printf("Erasing flash failed \n");
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return FLASH_FAIL;
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}
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} else {
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printf("Erasing Flash locations, Please Wait\n");
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for (i = s_first; i <= s_last; i++) {
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if (info->protect[i] == 0) { /* not protected */
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if (erase_block_flash(i, info->start[i]) < 0) {
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printf("Error Sector erasing \n");
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return FLASH_FAIL;
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}
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}
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}
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}
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return FLASH_SUCCESS;
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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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int ret;
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int d;
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if (addr % 2) {
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read_flash(addr - 1 - CONFIG_SYS_FLASH_BASE, &d);
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d = (int)((d & 0x00FF) | (*src++ << 8));
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ret = write_data(addr - 1, 2, (uchar *) & d);
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if (ret == FLASH_FAIL)
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return ERR_NOT_ERASED;
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ret = write_data(addr + 1, cnt - 1, src);
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} else
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ret = write_data(addr, cnt, src);
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if (ret == FLASH_FAIL)
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return ERR_NOT_ERASED;
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return FLASH_SUCCESS;
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}
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int write_data(long lStart, long lCount, uchar * pnData)
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{
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long i = 0;
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unsigned long ulOffset = lStart - CONFIG_SYS_FLASH_BASE;
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int d;
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int nSector = 0;
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int flag = 0;
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if (lCount % 2) {
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flag = 1;
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lCount = lCount - 1;
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}
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for (i = 0; i < lCount - 1; i += 2, ulOffset += 2) {
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get_sector_number(ulOffset, &nSector);
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read_flash(ulOffset, &d);
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if (d != 0xffff) {
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printf
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("Flash not erased at offset 0x%x Please erase to reprogram \n",
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ulOffset);
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return FLASH_FAIL;
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}
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unlock_flash(ulOffset);
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d = (int)(pnData[i] | pnData[i + 1] << 8);
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write_flash(ulOffset, d);
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if (poll_toggle_bit(ulOffset) < 0) {
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printf("Error programming the flash \n");
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return FLASH_FAIL;
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}
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if ((i > 0) && (!(i % AFP_SectorSize2)))
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printf(".");
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}
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if (flag) {
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get_sector_number(ulOffset, &nSector);
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read_flash(ulOffset, &d);
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if (d != 0xffff) {
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printf
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("Flash not erased at offset 0x%x Please erase to reprogram \n",
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ulOffset);
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return FLASH_FAIL;
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}
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unlock_flash(ulOffset);
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d = (int)(pnData[i] | (d & 0xFF00));
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write_flash(ulOffset, d);
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if (poll_toggle_bit(ulOffset) < 0) {
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printf("Error programming the flash \n");
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return FLASH_FAIL;
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}
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}
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return FLASH_SUCCESS;
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}
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int read_data(long ulStart, long lCount, long lStride, int *pnData)
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{
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long i = 0;
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int j = 0;
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long ulOffset = ulStart;
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int iShift = 0;
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int iNumWords = 2;
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int nLeftover = lCount % 4;
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int nHi, nLow;
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int nSector = 0;
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for (i = 0; (i < lCount / 4) && (i < BUFFER_SIZE); i++) {
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for (iShift = 0, j = 0; j < iNumWords; j += 2) {
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if ((ulOffset >= INVALIDLOCNSTART)
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&& (ulOffset < INVALIDLOCNEND))
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return FLASH_FAIL;
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get_sector_number(ulOffset, &nSector);
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read_flash(ulOffset, &nLow);
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ulOffset += (lStride * 2);
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read_flash(ulOffset, &nHi);
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ulOffset += (lStride * 2);
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pnData[i] = (nHi << 16) | nLow;
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}
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}
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if (nLeftover > 0) {
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if ((ulOffset >= INVALIDLOCNSTART)
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&& (ulOffset < INVALIDLOCNEND))
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return FLASH_FAIL;
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get_sector_number(ulOffset, &nSector);
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read_flash(ulOffset, &pnData[i]);
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}
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return FLASH_SUCCESS;
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}
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int write_flash(long nOffset, int nValue)
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{
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long addr;
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addr = (CONFIG_SYS_FLASH_BASE + nOffset);
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SSYNC();
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*(unsigned volatile short *)addr = nValue;
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SSYNC();
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if (poll_toggle_bit(nOffset) < 0)
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return FLASH_FAIL;
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return FLASH_SUCCESS;
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}
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int read_flash(long nOffset, int *pnValue)
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{
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int nValue = 0x0;
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long addr = (CONFIG_SYS_FLASH_BASE + nOffset);
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if (nOffset != 0x2)
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reset_flash();
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SSYNC();
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nValue = *(volatile unsigned short *)addr;
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SSYNC();
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*pnValue = nValue;
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return TRUE;
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}
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int poll_toggle_bit(long lOffset)
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{
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unsigned int u1, u2;
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unsigned long timeout = 0xFFFFFFFF;
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volatile unsigned long *FB =
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(volatile unsigned long *)(0x20000000 + lOffset);
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while (1) {
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if (timeout < 0)
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break;
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u1 = *(volatile unsigned short *)FB;
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u2 = *(volatile unsigned short *)FB;
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if ((u1 & 0x0040) == (u2 & 0x0040))
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return FLASH_SUCCESS;
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if ((u2 & 0x0020) == 0x0000)
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continue;
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u1 = *(volatile unsigned short *)FB;
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if ((u2 & 0x0040) == (u1 & 0x0040))
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return FLASH_SUCCESS;
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else {
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reset_flash();
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return FLASH_FAIL;
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}
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timeout--;
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}
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printf("Time out occured \n");
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if (timeout < 0)
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return FLASH_FAIL;
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}
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void reset_flash(void)
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{
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write_flash(WRITESEQ1, RESET_VAL);
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/* Wait for 10 micro seconds */
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udelay(10);
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}
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int erase_flash(void)
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{
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write_flash(WRITESEQ1, WRITEDATA1);
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write_flash(WRITESEQ2, WRITEDATA2);
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write_flash(WRITESEQ3, WRITEDATA3);
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write_flash(WRITESEQ4, WRITEDATA4);
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write_flash(WRITESEQ5, WRITEDATA5);
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write_flash(WRITESEQ6, WRITEDATA6);
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if (poll_toggle_bit(0x0000) < 0)
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return FLASH_FAIL;
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write_flash(SecFlashAOff + WRITESEQ1, WRITEDATA1);
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write_flash(SecFlashAOff + WRITESEQ2, WRITEDATA2);
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write_flash(SecFlashAOff + WRITESEQ3, WRITEDATA3);
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write_flash(SecFlashAOff + WRITESEQ4, WRITEDATA4);
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write_flash(SecFlashAOff + WRITESEQ5, WRITEDATA5);
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write_flash(SecFlashAOff + WRITESEQ6, WRITEDATA6);
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if (poll_toggle_bit(SecFlashASec1Off) < 0)
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return FLASH_FAIL;
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write_flash(PriFlashBOff + WRITESEQ1, WRITEDATA1);
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write_flash(PriFlashBOff + WRITESEQ2, WRITEDATA2);
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write_flash(PriFlashBOff + WRITESEQ3, WRITEDATA3);
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write_flash(PriFlashBOff + WRITESEQ4, WRITEDATA4);
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write_flash(PriFlashBOff + WRITESEQ5, WRITEDATA5);
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write_flash(PriFlashBOff + WRITESEQ6, WRITEDATA6);
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if (poll_toggle_bit(PriFlashBOff) < 0)
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return FLASH_FAIL;
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write_flash(SecFlashBOff + WRITESEQ1, WRITEDATA1);
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write_flash(SecFlashBOff + WRITESEQ2, WRITEDATA2);
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write_flash(SecFlashBOff + WRITESEQ3, WRITEDATA3);
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write_flash(SecFlashBOff + WRITESEQ4, WRITEDATA4);
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write_flash(SecFlashBOff + WRITESEQ5, WRITEDATA5);
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write_flash(SecFlashBOff + WRITESEQ6, WRITEDATA6);
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if (poll_toggle_bit(SecFlashBOff) < 0)
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return FLASH_FAIL;
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return FLASH_SUCCESS;
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}
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int erase_block_flash(int nBlock, unsigned long address)
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{
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long ulSectorOff = 0x0;
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if ((nBlock < 0) || (nBlock > AFP_NumSectors))
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return FALSE;
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ulSectorOff = (address - CONFIG_SYS_FLASH_BASE);
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write_flash((WRITESEQ1 | ulSectorOff), WRITEDATA1);
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write_flash((WRITESEQ2 | ulSectorOff), WRITEDATA2);
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write_flash((WRITESEQ3 | ulSectorOff), WRITEDATA3);
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write_flash((WRITESEQ4 | ulSectorOff), WRITEDATA4);
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write_flash((WRITESEQ5 | ulSectorOff), WRITEDATA5);
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write_flash(ulSectorOff, BlockEraseVal);
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if (poll_toggle_bit(ulSectorOff) < 0)
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return FLASH_FAIL;
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return FLASH_SUCCESS;
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}
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void unlock_flash(long ulOffset)
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{
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unsigned long ulOffsetAddr = ulOffset;
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ulOffsetAddr &= 0xFFFF0000;
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write_flash((WRITESEQ1 | ulOffsetAddr), UNLOCKDATA1);
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write_flash((WRITESEQ2 | ulOffsetAddr), UNLOCKDATA2);
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write_flash((WRITESEQ3 | ulOffsetAddr), UNLOCKDATA3);
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}
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int get_codes()
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{
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int dev_id = 0;
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write_flash(WRITESEQ1, GETCODEDATA1);
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write_flash(WRITESEQ2, GETCODEDATA2);
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write_flash(WRITESEQ3, GETCODEDATA3);
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read_flash(0x0002, &dev_id);
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dev_id &= 0x00FF;
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reset_flash();
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return dev_id;
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}
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void get_sector_number(long ulOffset, int *pnSector)
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{
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int nSector = 0;
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if (ulOffset >= SecFlashAOff) {
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if ((ulOffset < SecFlashASec1Off)
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&& (ulOffset < SecFlashASec2Off)) {
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nSector = SECT32;
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} else if ((ulOffset >= SecFlashASec2Off)
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&& (ulOffset < SecFlashASec3Off)) {
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nSector = SECT33;
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} else if ((ulOffset >= SecFlashASec3Off)
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&& (ulOffset < SecFlashASec4Off)) {
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nSector = SECT34;
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} else if ((ulOffset >= SecFlashASec4Off)
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&& (ulOffset < SecFlashAEndOff)) {
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nSector = SECT35;
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}
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} else if (ulOffset >= SecFlashBOff) {
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if ((ulOffset < SecFlashBSec1Off)
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&& (ulOffset < SecFlashBSec2Off)) {
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nSector = SECT36;
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}
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if ((ulOffset < SecFlashBSec2Off)
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&& (ulOffset < SecFlashBSec3Off)) {
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nSector = SECT37;
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}
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if ((ulOffset < SecFlashBSec3Off)
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&& (ulOffset < SecFlashBSec4Off)) {
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nSector = SECT38;
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}
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if ((ulOffset < SecFlashBSec4Off)
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&& (ulOffset < SecFlashBEndOff)) {
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nSector = SECT39;
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}
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} else if ((ulOffset >= PriFlashAOff) && (ulOffset < SecFlashAOff)) {
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nSector = ulOffset & 0xffff0000;
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nSector = ulOffset >> 16;
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nSector = nSector & 0x000ff;
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}
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if ((nSector >= 0) && (nSector < AFP_NumSectors)) {
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*pnSector = nSector;
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}
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}
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