upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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491 lines
13 KiB
491 lines
13 KiB
/*
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* (C) Copyright 2001
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2002
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* Gregory E. Allen, gallen@arlut.utexas.edu
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* Matthew E. Karger, karger@arlut.utexas.edu
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* Applied Research Laboratories, The University of Texas at Austin
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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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#include <common.h>
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#include <mpc824x.h>
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#include <asm/processor.h>
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#define ROM_CS0_START 0xFF800000
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#define ROM_CS1_START 0xFF000000
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#if defined(CFG_ENV_IS_IN_FLASH)
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# ifndef CFG_ENV_ADDR
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# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
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# endif
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# ifndef CFG_ENV_SIZE
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# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
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# endif
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# ifndef CFG_ENV_SECT_SIZE
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# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
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# endif
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#endif
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#define FLASH_BANK_SIZE 0x200000
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#define MAIN_SECT_SIZE 0x10000
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#define SECT_SIZE_32KB 0x8000
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#define SECT_SIZE_8KB 0x2000
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
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static int write_word (flash_info_t *info, ulong dest, ulong data);
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static __inline__ unsigned long get_msr(void)
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{ unsigned long msr;
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__asm__ __volatile__ ("mfmsr %0" : "=r" (msr) :);
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return msr;
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}
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static __inline__ void set_msr(unsigned long msr)
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{
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__asm__ __volatile__ ("mtmsr %0" : : "r" (msr));
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}
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/*flash command address offsets*/
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#define ADDR0 (0x555)
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#define ADDR1 (0xAAA)
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#define ADDR3 (0x001)
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#define FLASH_WORD_SIZE unsigned char
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/*---------------------------------------------------------------------*/
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/*#define DEBUG_FLASH 1 */
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/*---------------------------------------------------------------------*/
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unsigned long flash_init(void)
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{
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int i, j;
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ulong size = 0;
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unsigned char manuf_id, device_id;
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for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
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{
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vu_char *addr = (vu_char *)(CFG_FLASH_BASE + i * FLASH_BANK_SIZE);
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addr[0x555] = 0xAA; /* 3 cycles to read device info. See */
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addr[0x2AA] = 0x55; /* AM29LV116D datasheet for list of */
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addr[0x555] = 0x90; /* available commands. */
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manuf_id = addr[0];
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device_id = addr[1];
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#if defined DEBUG_FLASH
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printf("manuf_id = %x, device_id = %x\n", manuf_id, device_id);
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#endif
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if ( (manuf_id == (uchar)(AMD_MANUFACT)) &&
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( device_id == AMD_ID_LV116DT))
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{
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flash_info[i].flash_id = ((FLASH_MAN_AMD & FLASH_VENDMASK) << 16) |
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(AMD_ID_LV116DT & FLASH_TYPEMASK);
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} else {
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flash_info[i].flash_id = FLASH_UNKNOWN;
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addr[0] = (long)0xFFFFFFFF;
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goto Done;
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}
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#if defined DEBUG_FLASH
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printf ("flash_id = 0x%08lX\n", flash_info[i].flash_id);
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#endif
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addr[0] = (long)0xFFFFFFFF;
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flash_info[i].size = FLASH_BANK_SIZE;
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flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
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memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
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for (j = 0; j < flash_info[i].sector_count; j++)
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{
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if (j < (CFG_MAX_FLASH_SECT - 3) )
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flash_info[i].start[j] = CFG_FLASH_BASE + i * FLASH_BANK_SIZE +
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j * MAIN_SECT_SIZE;
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else if (j == (CFG_MAX_FLASH_SECT - 3) )
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flash_info[i].start[j] = flash_info[i].start[j-1] + SECT_SIZE_32KB;
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else
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flash_info[i].start[j] = flash_info[i].start[j-1] + SECT_SIZE_8KB;
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}
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size += flash_info[i].size;
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}
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/* Protect monitor and environment sectors
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*/
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#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
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flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
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CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1, &flash_info[0]);
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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, CFG_ENV_ADDR,
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CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]);
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#endif
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Done:
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return 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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static const char unk[] = "Unknown";
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const char *mfct = unk, *type = unk;
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unsigned int i;
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if(info->flash_id != FLASH_UNKNOWN)
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{
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switch(info->flash_id & FLASH_VENDMASK)
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{
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case FLASH_MAN_AMD: mfct = "AMD"; break;
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case FLASH_MAN_FUJ: mfct = "FUJITSU"; break;
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case FLASH_MAN_STM: mfct = "STM"; break;
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case FLASH_MAN_SST: mfct = "SST"; break;
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case FLASH_MAN_BM: mfct = "Bright Microelectonics"; break;
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case FLASH_MAN_INTEL: mfct = "Intel"; break;
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}
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switch(info->flash_id & FLASH_TYPEMASK)
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{
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case FLASH_AM040: type = "AM29F040B (512K * 8, uniform sector size)"; break;
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case FLASH_AM400B: type = "AM29LV400B (4 Mbit, bottom boot sect)"; break;
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case FLASH_AM400T: type = "AM29LV400T (4 Mbit, top boot sector)"; break;
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case FLASH_AM800B: type = "AM29LV800B (8 Mbit, bottom boot sect)"; break;
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case FLASH_AM800T: type = "AM29LV800T (8 Mbit, top boot sector)"; break;
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case FLASH_AM160T: type = "AM29LV160T (16 Mbit, top boot sector)"; break;
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case FLASH_AM320B: type = "AM29LV320B (32 Mbit, bottom boot sect)"; break;
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case FLASH_AM320T: type = "AM29LV320T (32 Mbit, top boot sector)"; break;
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case FLASH_STM800AB: type = "M29W800AB (8 Mbit, bottom boot sect)"; break;
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case FLASH_SST800A: type = "SST39LF/VF800 (8 Mbit, uniform sector size)"; break;
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case FLASH_SST160A: type = "SST39LF/VF160 (16 Mbit, uniform sector size)"; break;
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}
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}
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printf(
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"\n Brand: %s Type: %s\n"
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" Size: %lu KB in %d Sectors\n",
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mfct,
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type,
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info->size >> 10,
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info->sector_count
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);
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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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unsigned long size;
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unsigned int erased;
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unsigned long * flash = (unsigned long *) info->start[i];
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/*
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* Check if whole sector is erased
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*/
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size =
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(i != (info->sector_count - 1)) ?
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(info->start[i + 1] - info->start[i]) >> 2 :
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(info->start[0] + info->size - info->start[i]) >> 2;
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for(
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flash = (unsigned long *) info->start[i], erased = 1;
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(flash != (unsigned long *) info->start[i] + size) && erased;
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flash++
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)
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erased = *flash == ~0x0UL;
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printf(
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"%s %08lX %s %s",
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(i % 5) ? "" : "\n ",
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info->start[i],
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erased ? "E" : " ",
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info->protect[i] ? "RO" : " "
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);
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}
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puts("\n");
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return;
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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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int flag, prot, sect, l_sect;
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ulong start, now, last;
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unsigned char sh8b;
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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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(info->flash_id > (FLASH_MAN_STM | FLASH_AMD_COMP))) {
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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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/* Check the ROM CS */
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if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START))
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sh8b = 3;
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else
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sh8b = 0;
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/* Disable interrupts which might cause a timeout here */
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flag = disable_interrupts();
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addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
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addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080;
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addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
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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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{
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if (info->protect[sect] == 0)
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{ /* not protected */
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addr = (FLASH_WORD_SIZE *)(info->start[0] + (
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(info->start[sect] - info->start[0]) << sh8b));
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if (info->flash_id & FLASH_MAN_SST)
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{
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addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
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addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00800080;
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addr[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
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addr[0] = (FLASH_WORD_SIZE)0x00500050; /* block erase */
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udelay(30000); /* wait 30 ms */
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}
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else
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addr[0] = (FLASH_WORD_SIZE)0x00300030; /* sector erase */
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l_sect = 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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/*
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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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start = get_timer (0);
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last = start;
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addr = (FLASH_WORD_SIZE *)(info->start[0] + (
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(info->start[l_sect] - info->start[0]) << sh8b));
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while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (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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serial_putc ('.');
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last = now;
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}
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}
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DONE:
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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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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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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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volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *)info->start[0];
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volatile FLASH_WORD_SIZE *dest2;
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volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *)&data;
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ulong start;
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int flag;
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int i;
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unsigned char sh8b;
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/* Check the ROM CS */
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if ((info->start[0] >= ROM_CS1_START) && (info->start[0] < ROM_CS0_START))
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sh8b = 3;
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else
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sh8b = 0;
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dest2 = (FLASH_WORD_SIZE *)(((dest - info->start[0]) << sh8b) +
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info->start[0]);
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/* Check if Flash is (sufficiently) erased */
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if ((*dest2 & (FLASH_WORD_SIZE)data) != (FLASH_WORD_SIZE)data) {
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return (2);
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}
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/* Disable interrupts which might cause a timeout here */
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flag = disable_interrupts();
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for (i=0; i<4/sizeof(FLASH_WORD_SIZE); i++)
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{
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addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr2[ADDR1 << sh8b] = (FLASH_WORD_SIZE)0x00550055;
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addr2[ADDR0 << sh8b] = (FLASH_WORD_SIZE)0x00A000A0;
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dest2[i << sh8b] = 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 << sh8b] & (FLASH_WORD_SIZE)0x00800080) !=
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(data2[i] & (FLASH_WORD_SIZE)0x00800080)) {
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if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
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return (1);
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}
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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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