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-/*
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- * (C) Copyright 2006 Embedded Artists AB <www.embeddedartists.com>
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- *
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- * Modified to use the routines in arch/arm/cpu/arm720t/lpc2292/flash.c by
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- * Gary Jennejohn <garyj@denx,de>
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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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-#include <common.h>
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-#include <asm/arch/hardware.h>
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-
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-#define SST_BASEADDR 0x80000000
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-#define SST_ADDR1 ((volatile ushort*)(SST_BASEADDR + (0x5555 << 1)))
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-#define SST_ADDR2 ((volatile ushort*)(SST_BASEADDR + (0x2AAA << 1)))
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-
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-
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-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
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-
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-extern int lpc2292_copy_buffer_to_flash(flash_info_t *, ulong);
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-extern int lpc2292_flash_erase(flash_info_t *, int, int);
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-extern int lpc2292_write_buff (flash_info_t *, uchar *, ulong, ulong);
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-
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-/*-----------------------------------------------------------------------
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- *
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- */
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-void write_word_sst(ulong addr, ushort data)
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-{
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- ushort tmp;
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-
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- *SST_ADDR1 = 0x00AA;
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- *SST_ADDR2 = 0x0055;
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- *SST_ADDR1 = 0x00A0;
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- *((volatile ushort*)addr) = data;
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- /* do data polling */
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- do {
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- tmp = *((volatile ushort*)addr);
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- } while (tmp != data);
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-}
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-
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-/*-----------------------------------------------------------------------
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- */
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-
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-ulong flash_init (void)
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-{
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- int j, k;
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- ulong size = 0;
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- ulong flashbase = 0;
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-
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- flash_info[0].flash_id = (PHILIPS_LPC2292 & FLASH_VENDMASK);
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- flash_info[0].size = 0x003E000; /* 256 - 8 KB */
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- flash_info[0].sector_count = 17;
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- memset (flash_info[0].protect, 0, 17);
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- flashbase = 0x00000000;
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- for (j = 0, k = 0; j < 8; j++, k++) {
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- flash_info[0].start[k] = flashbase;
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- flashbase += 0x00002000;
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- }
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- for (j = 0; j < 2; j++, k++) {
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- flash_info[0].start[k] = flashbase;
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- flashbase += 0x00010000;
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- }
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- for (j = 0; j < 7; j++, k++) {
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- flash_info[0].start[k] = flashbase;
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- flashbase += 0x00002000;
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- }
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- size += flash_info[0].size;
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-
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- flash_info[1].flash_id = (SST_MANUFACT & FLASH_VENDMASK);
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- flash_info[1].size = 0x00200000; /* 2 MB */
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- flash_info[1].sector_count = 512;
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- memset (flash_info[1].protect, 0, 512);
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- flashbase = SST_BASEADDR;
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- for (j=0; j<512; j++) {
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- flash_info[1].start[j] = flashbase;
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- flashbase += 0x1000; /* 4 KB sectors */
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- }
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- size += flash_info[1].size;
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-
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- /* Protect monitor and environment sectors */
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- flash_protect (FLAG_PROTECT_SET,
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- 0x0,
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- 0x0 + monitor_flash_len - 1,
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- &flash_info[0]);
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-
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- flash_protect (FLAG_PROTECT_SET,
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- CONFIG_ENV_ADDR,
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- CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
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- &flash_info[0]);
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-
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- return size;
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-}
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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 erased = 0;
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- unsigned long j;
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- unsigned long count;
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- unsigned char *p;
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-
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- switch (info->flash_id & FLASH_VENDMASK) {
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- case (SST_MANUFACT & FLASH_VENDMASK):
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- printf("SST: ");
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- break;
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- case (PHILIPS_LPC2292 & FLASH_VENDMASK):
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- printf("Philips: ");
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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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-
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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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-
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- printf (" Sector Start Addresses:");
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- for (i = 0; i < info->sector_count; i++) {
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- if ((i % 5) == 0) {
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- printf ("\n ");
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- }
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- if (i < (info->sector_count - 1)) {
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- count = info->start[i+1] - info->start[i];
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- }
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- else {
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- count = info->start[0] + info->size - info->start[i];
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- }
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- p = (unsigned char*)(info->start[i]);
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- erased = 1;
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- for (j = 0; j < count; j++) {
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- if (*p != 0xFF) {
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- erased = 0;
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- break;
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- }
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- p++;
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- }
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- printf (" %08lX%s%s", info->start[i], info->protect[i] ? " RO" : " ",
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- erased ? " E" : " ");
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- }
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- printf ("\n");
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-}
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-
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-int flash_erase_sst (flash_info_t * info, int s_first, int s_last)
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-{
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- int i;
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-
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- for (i = s_first; i <= s_last; i++) {
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- *SST_ADDR1 = 0x00AA;
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- *SST_ADDR2 = 0x0055;
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- *SST_ADDR1 = 0x0080;
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- *SST_ADDR1 = 0x00AA;
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- *SST_ADDR2 = 0x0055;
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- *((volatile ushort*)(info->start[i])) = 0x0030;
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- /* wait for erase to finish */
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- udelay(25000);
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- }
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-
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- return ERR_OK;
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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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- switch (info->flash_id & FLASH_VENDMASK) {
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- case (SST_MANUFACT & FLASH_VENDMASK):
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- return flash_erase_sst(info, s_first, s_last);
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- case (PHILIPS_LPC2292 & FLASH_VENDMASK):
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- return lpc2292_flash_erase(info, s_first, s_last);
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- default:
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- return ERR_PROTECTED;
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- }
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- return ERR_PROTECTED;
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-}
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-
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-/*-----------------------------------------------------------------------
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- * Copy memory to flash.
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- *
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- * cnt is in bytes
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- */
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-
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-int write_buff_sst (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
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-{
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- ushort tmp;
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- ulong i;
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- uchar* src_org;
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- uchar* dst_org;
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- ulong cnt_org = cnt;
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- int ret = ERR_OK;
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-
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- src_org = src;
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- dst_org = (uchar*)addr;
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-
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- if (addr & 1) { /* if odd address */
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- tmp = *((uchar*)(addr - 1)); /* little endian */
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- tmp |= (*src << 8);
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- write_word_sst(addr - 1, tmp);
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- addr += 1;
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- cnt -= 1;
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- src++;
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- }
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- while (cnt > 1) {
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- tmp = ((*(src+1)) << 8) + (*src); /* little endian */
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- write_word_sst(addr, tmp);
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- addr += 2;
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- src += 2;
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- cnt -= 2;
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- }
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- if (cnt > 0) {
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- tmp = (*((uchar*)(addr + 1))) << 8;
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- tmp |= *src;
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- write_word_sst(addr, tmp);
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- }
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-
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- for (i = 0; i < cnt_org; i++) {
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- if (*dst_org != *src_org) {
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- printf("Write failed. Byte %lX differs\n", i);
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- ret = ERR_PROG_ERROR;
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- break;
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- }
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- dst_org++;
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- src_org++;
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- }
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-
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- return ret;
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-}
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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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- switch (info->flash_id & FLASH_VENDMASK) {
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- case (SST_MANUFACT & FLASH_VENDMASK):
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- return write_buff_sst(info, src, addr, cnt);
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- case (PHILIPS_LPC2292 & FLASH_VENDMASK):
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- return lpc2292_write_buff(info, src, addr, cnt);
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- default:
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- return ERR_PROG_ERROR;
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- }
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- return ERR_PROG_ERROR;
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-}
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