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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607 lines
15 KiB
607 lines
15 KiB
/*
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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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#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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#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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static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = {
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{0xfff80000}, /* 0:000: configuraton 3 */
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{0xfff90000}, /* 1:001: configuraton 4 */
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{0xfffa0000}, /* 2:010: configuraton 7 */
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{0xfffb0000}, /* 3:011: configuraton 8 */
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{0xfffc0000}, /* 4:100: configuraton 1 */
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{0xfffd0000}, /* 5:101: configuraton 2 */
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{0xfffe0000}, /* 6:110: configuraton 5 */
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{0xffff0000} /* 7:111: configuraton 6 */
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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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#ifdef CONFIG_XPEDITE1K
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#define ADDR0 0x5555
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#define ADDR1 0x2aaa
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#define FLASH_WORD_SIZE unsigned char
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#endif
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/*-----------------------------------------------------------------------
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*/
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unsigned long flash_init (void)
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{
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unsigned long 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(
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(vu_long *)flash_addr_table[index][i], &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 ("## 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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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: printf ("AMD "); break;
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case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
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case FLASH_MAN_SST: printf ("SST "); break;
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default: printf ("Unknown Vendor "); break;
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}
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AMD016: printf ("AM29F016D (16 Mbit, uniform sector size)\n");
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break;
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case FLASH_AM040: printf ("AM29F040 (512 Kbit, uniform sector size)\n");
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break;
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case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
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break;
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case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
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break;
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case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
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break;
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case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
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break;
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case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
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break;
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case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
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break;
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default: printf ("Unknown Chip Type\n");
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break;
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}
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printf (" Size: %ld KB in %d Sectors\n",
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info->size >> 10, info->sector_count);
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printf (" Sector Start Addresses:");
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for (i=0; i<info->sector_count; ++i) {
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/*
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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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{
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if (*flash++ != 0xffffffff)
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{
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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" : " ",
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info->protect[i] ? "RO " : " "
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);
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}
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printf ("\n");
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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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addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
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udelay(1000);
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addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
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udelay(1000);
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addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;
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udelay(1000);
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#ifdef CONFIG_ADCIOP
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value = addr2[2];
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#else
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value = addr2[0];
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#endif
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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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switch (value) {
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case (FLASH_WORD_SIZE)AMD_ID_LV040B:
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info->flash_id += FLASH_AM040;
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info->sector_count = 8;
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info->size = 0x00080000; /* => 512 kb */
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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return (0); /* => no or unknown flash */
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}
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/* set up sector start address table */
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if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
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(info->flash_id == FLASH_AM040) ||
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(info->flash_id == FLASH_AMD016)) {
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * 0x00010000);
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} else {
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if (info->flash_id & FLASH_BTYPE) {
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/* set sector offsets for bottom boot block type */
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info->start[0] = base + 0x00000000;
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info->start[1] = base + 0x00004000;
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info->start[2] = base + 0x00006000;
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info->start[3] = base + 0x00008000;
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] = base + (i * 0x00010000) - 0x00030000;
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}
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} else {
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/* set sector offsets for top boot block type */
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i = info->sector_count - 1;
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info->start[i--] = base + info->size - 0x00004000;
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info->start[i--] = base + info->size - 0x00006000;
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info->start[i--] = base + info->size - 0x00008000;
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for (; i >= 0; i--) {
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info->start[i] = base + i * 0x00010000;
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}
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}
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}
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/* check for protected sectors */
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for (i = 0; i < info->sector_count; i++) {
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/* read sector protection at sector address, (A7 .. A0) = 0x02 */
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/* D0 = 1 if protected */
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#ifdef CONFIG_ADCIOP
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addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
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info->protect[i] = addr2[4] & 1;
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#else
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addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
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if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
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info->protect[i] = 0;
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else
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info->protect[i] = addr2[2] & 1;
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#endif
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}
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/*
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* Prevent writes to uninitialized FLASH.
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*/
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if (info->flash_id != FLASH_UNKNOWN) {
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#if 0 /* test-only */
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#ifdef CONFIG_ADCIOP
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addr2 = (volatile unsigned char *)info->start[0];
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addr2[ADDR0] = 0xAA;
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addr2[ADDR1] = 0x55;
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addr2[ADDR0] = 0xF0; /* reset bank */
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#else
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addr2 = (FLASH_WORD_SIZE *)info->start[0];
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*addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
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#endif
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#else /* test-only */
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addr2 = (FLASH_WORD_SIZE *)info->start[0];
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*addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
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#endif /* test-only */
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}
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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 = (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) != (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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int i;
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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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if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
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addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
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addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
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addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
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addr2[0] = (FLASH_WORD_SIZE)0x00500050; /* block erase */
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for (i=0; i<50; i++)
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udelay(1000); /* wait 1 ms */
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} else {
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addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
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addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
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addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
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addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
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addr2[0] = (FLASH_WORD_SIZE)0x00300030; /* sector erase */
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}
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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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wp = (addr & ~3); /* get lower word aligned address */
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/*
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* handle unaligned start bytes
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*/
|
|
if ((l = addr - wp) != 0) {
|
|
data = 0;
|
|
for (i=0, cp=wp; i<l; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
for (; i<4 && cnt>0; ++i) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
++cp;
|
|
}
|
|
for (; cnt==0 && i<4; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
}
|
|
|
|
/*
|
|
* handle word aligned part
|
|
*/
|
|
while (cnt >= 4) {
|
|
data = 0;
|
|
for (i=0; i<4; ++i) {
|
|
data = (data << 8) | *src++;
|
|
}
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
cnt -= 4;
|
|
}
|
|
|
|
if (cnt == 0) {
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
data = 0;
|
|
for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
}
|
|
for (; i<4; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
|
|
return (write_word(info, wp, data));
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Write a word to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
static int write_word (flash_info_t * info, ulong dest, ulong data)
|
|
{
|
|
volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) (info->start[0]);
|
|
volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest;
|
|
volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
|
|
ulong start;
|
|
int i;
|
|
|
|
/* Check if Flash is (sufficiently) erased */
|
|
if ((*((volatile FLASH_WORD_SIZE *) dest) &
|
|
(FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
|
|
return (2);
|
|
}
|
|
|
|
for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
|
|
int flag;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts ();
|
|
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0;
|
|
|
|
dest2[i] = data2[i];
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts ();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) !=
|
|
(data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
|
|
|
|
if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|