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+/*
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+ * (C) Copyright 2000
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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., 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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+/*
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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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+#include <common.h>
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+#include <ppc4xx.h>
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+#include <asm/processor.h>
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+
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+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
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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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+static void flash_get_offsets (ulong base, flash_info_t *info);
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+
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+#ifdef CONFIG_ADCIOP
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+#define ADDR0 0x0aa9
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+#define ADDR1 0x0556
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+#define FLASH_WORD_SIZE unsigned char
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+#endif
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+
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+#ifdef CONFIG_CPCI405
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+#define ADDR0 0x5555
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+#define ADDR1 0x2aaa
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+#define FLASH_WORD_SIZE unsigned short
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+#endif
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+
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+#ifdef CONFIG_WALNUT405
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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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+#ifdef CONFIG_BUBINGA405EP
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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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+/*-----------------------------------------------------------------------
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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 size_b0, size_b1;
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+ int i;
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+ uint pbcr;
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+ unsigned long base_b0, base_b1;
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+
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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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+ }
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+
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+ /* Static FLASH Bank configuration here - FIXME XXX */
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+
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+ size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
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+
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+ if (flash_info[0].flash_id == FLASH_UNKNOWN) {
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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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+
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+ /* Only one bank */
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+ if (CFG_MAX_FLASH_BANKS == 1)
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+ {
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+ /* Setup offsets */
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+ flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
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+
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+ /* Monitor protection ON by default */
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+ (void)flash_protect(FLAG_PROTECT_SET,
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+ FLASH_BASE0_PRELIM,
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+ FLASH_BASE0_PRELIM+CFG_MONITOR_LEN-1,
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+ &flash_info[0]);
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+ size_b1 = 0 ;
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+ flash_info[0].size = size_b0;
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+ }
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+
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+ /* 2 banks */
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+ else
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+ {
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+ size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
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+
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+ /* Re-do sizing to get full correct info */
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+
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+ if (size_b1)
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+ {
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+ mtdcr(ebccfga, pb0cr);
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+ pbcr = mfdcr(ebccfgd);
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+ mtdcr(ebccfga, pb0cr);
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+ base_b1 = -size_b1;
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+ pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);
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+ mtdcr(ebccfgd, pbcr);
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+ /* printf("pb1cr = %x\n", pbcr); */
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+ }
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+
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+ if (size_b0)
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+ {
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+ mtdcr(ebccfga, pb1cr);
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+ pbcr = mfdcr(ebccfgd);
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+ mtdcr(ebccfga, pb1cr);
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+ base_b0 = base_b1 - size_b0;
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+ pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
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+ mtdcr(ebccfgd, pbcr);
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+ /* printf("pb0cr = %x\n", pbcr); */
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+ }
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+
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+ size_b0 = flash_get_size((vu_long *)base_b0, &flash_info[0]);
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+
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+ flash_get_offsets (base_b0, &flash_info[0]);
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+
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+ /* monitor protection ON by default */
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+ (void)flash_protect(FLAG_PROTECT_SET,
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+ base_b0+size_b0-CFG_MONITOR_LEN,
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+ base_b0+size_b0-1,
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+ &flash_info[0]);
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+
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+ if (size_b1) {
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+ /* Re-do sizing to get full correct info */
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+ size_b1 = flash_get_size((vu_long *)base_b1, &flash_info[1]);
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+
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+ flash_get_offsets (base_b1, &flash_info[1]);
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+
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+ /* monitor protection ON by default */
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+ (void)flash_protect(FLAG_PROTECT_SET,
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+ base_b1+size_b1-CFG_MONITOR_LEN,
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+ base_b1+size_b1-1,
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+ &flash_info[1]);
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+ /* monitor protection OFF by default (one is enough) */
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+ (void)flash_protect(FLAG_PROTECT_CLEAR,
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+ base_b0+size_b0-CFG_MONITOR_LEN,
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+ base_b0+size_b0-1,
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+ &flash_info[0]);
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+ } else {
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+ flash_info[1].flash_id = FLASH_UNKNOWN;
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+ flash_info[1].sector_count = -1;
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+ }
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+
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+ flash_info[0].size = size_b0;
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+ flash_info[1].size = size_b1;
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+ }/* else 2 banks */
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+ return (size_b0 + size_b1);
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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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+static void flash_get_offsets (ulong base, flash_info_t *info)
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+{
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+ int i;
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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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+ 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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+}
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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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+
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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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+
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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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+
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+ switch (info->flash_id & FLASH_TYPEMASK) {
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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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+
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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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+ /*
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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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+
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+ if ((i % 5) == 0)
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+ printf ("\n ");
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+#if 0 /* test-only */
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+ printf (" %08lX%s",
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+ info->start[i],
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+ info->protect[i] ? " (RO)" : " "
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+#else
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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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+#endif
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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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+/*-----------------------------------------------------------------------
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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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+
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+ /* Write auto select command: read Manufacturer ID */
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+ addr2[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
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+ addr2[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
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+ addr2[ADDR0] = (FLASH_WORD_SIZE)0x00900090;
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+
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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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+
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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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+ 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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+
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+#ifdef CONFIG_ADCIOP
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+ value = addr2[0]; /* device ID */
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+ /* printf("\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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+
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+ switch (value) {
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+ case (FLASH_WORD_SIZE)AMD_ID_F040B:
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+ info->flash_id += FLASH_AM040;
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+ info->sector_count = 8;
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+ info->size = 0x0080000; /* => 512 ko */
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+ break;
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+ case (FLASH_WORD_SIZE)AMD_ID_LV400T:
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+ info->flash_id += FLASH_AM400T;
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+ info->sector_count = 11;
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+ info->size = 0x00080000;
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+ break; /* => 0.5 MB */
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+
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+ case (FLASH_WORD_SIZE)AMD_ID_LV400B:
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+ info->flash_id += FLASH_AM400B;
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+ info->sector_count = 11;
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+ info->size = 0x00080000;
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+ break; /* => 0.5 MB */
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+
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+ case (FLASH_WORD_SIZE)AMD_ID_LV800T:
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+ info->flash_id += FLASH_AM800T;
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+ info->sector_count = 19;
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+ info->size = 0x00100000;
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+ break; /* => 1 MB */
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+
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+ case (FLASH_WORD_SIZE)AMD_ID_LV800B:
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+ info->flash_id += FLASH_AM800B;
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+ info->sector_count = 19;
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+ info->size = 0x00100000;
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+ break; /* => 1 MB */
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+
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+ case (FLASH_WORD_SIZE)AMD_ID_LV160T:
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+ info->flash_id += FLASH_AM160T;
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+ info->sector_count = 35;
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+ info->size = 0x00200000;
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+ break; /* => 2 MB */
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+
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+ case (FLASH_WORD_SIZE)AMD_ID_LV160B:
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+ info->flash_id += FLASH_AM160B;
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+ info->sector_count = 35;
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+ info->size = 0x00200000;
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+ break; /* => 2 MB */
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+#if 0 /* enable when device IDs are available */
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+ case (FLASH_WORD_SIZE)AMD_ID_LV320T:
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+ info->flash_id += FLASH_AM320T;
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|
|
+ info->sector_count = 67;
|
|
|
+ info->size = 0x00400000;
|
|
|
+ break; /* => 4 MB */
|
|
|
+
|
|
|
+ case (FLASH_WORD_SIZE)AMD_ID_LV320B:
|
|
|
+ info->flash_id += FLASH_AM320B;
|
|
|
+ info->sector_count = 67;
|
|
|
+ info->size = 0x00400000;
|
|
|
+ break; /* => 4 MB */
|
|
|
+#endif
|
|
|
+ case (FLASH_WORD_SIZE)SST_ID_xF800A:
|
|
|
+ info->flash_id += FLASH_SST800A;
|
|
|
+ info->sector_count = 16;
|
|
|
+ info->size = 0x00100000;
|
|
|
+ break; /* => 1 MB */
|
|
|
+
|
|
|
+ case (FLASH_WORD_SIZE)SST_ID_xF160A:
|
|
|
+ info->flash_id += FLASH_SST160A;
|
|
|
+ info->sector_count = 32;
|
|
|
+ info->size = 0x00200000;
|
|
|
+ break; /* => 2 MB */
|
|
|
+
|
|
|
+ default:
|
|
|
+ info->flash_id = FLASH_UNKNOWN;
|
|
|
+ return (0); /* => no or unknown flash */
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /* set up sector start address table */
|
|
|
+ if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
|
|
|
+ (info->flash_id == FLASH_AM040)){
|
|
|
+ for (i = 0; i < info->sector_count; i++)
|
|
|
+ info->start[i] = base + (i * 0x00010000);
|
|
|
+ } else {
|
|
|
+ if (info->flash_id & FLASH_BTYPE) {
|
|
|
+ /* set sector offsets for bottom boot block type */
|
|
|
+ info->start[0] = base + 0x00000000;
|
|
|
+ info->start[1] = base + 0x00004000;
|
|
|
+ info->start[2] = base + 0x00006000;
|
|
|
+ info->start[3] = base + 0x00008000;
|
|
|
+ for (i = 4; i < info->sector_count; i++) {
|
|
|
+ info->start[i] = base + (i * 0x00010000) - 0x00030000;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ /* set sector offsets for top boot block type */
|
|
|
+ i = info->sector_count - 1;
|
|
|
+ info->start[i--] = base + info->size - 0x00004000;
|
|
|
+ info->start[i--] = base + info->size - 0x00006000;
|
|
|
+ info->start[i--] = base + info->size - 0x00008000;
|
|
|
+ for (; i >= 0; i--) {
|
|
|
+ info->start[i] = base + i * 0x00010000;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* check for protected sectors */
|
|
|
+ for (i = 0; i < info->sector_count; i++) {
|
|
|
+ /* read sector protection at sector address, (A7 .. A0) = 0x02 */
|
|
|
+ /* D0 = 1 if protected */
|
|
|
+#ifdef CONFIG_ADCIOP
|
|
|
+ addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
|
|
|
+ info->protect[i] = addr2[4] & 1;
|
|
|
+#else
|
|
|
+ addr2 = (volatile FLASH_WORD_SIZE *)(info->start[i]);
|
|
|
+ if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
|
|
|
+ info->protect[i] = 0;
|
|
|
+ else
|
|
|
+ info->protect[i] = addr2[2] & 1;
|
|
|
+#endif
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Prevent writes to uninitialized FLASH.
|
|
|
+ */
|
|
|
+ if (info->flash_id != FLASH_UNKNOWN) {
|
|
|
+#if 0 /* test-only */
|
|
|
+#ifdef CONFIG_ADCIOP
|
|
|
+ addr2 = (volatile unsigned char *)info->start[0];
|
|
|
+ addr2[ADDR0] = 0xAA;
|
|
|
+ addr2[ADDR1] = 0x55;
|
|
|
+ addr2[ADDR0] = 0xF0; /* reset bank */
|
|
|
+#else
|
|
|
+ addr2 = (FLASH_WORD_SIZE *)info->start[0];
|
|
|
+ *addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
|
|
|
+#endif
|
|
|
+#else /* test-only */
|
|
|
+ addr2 = (FLASH_WORD_SIZE *)info->start[0];
|
|
|
+ *addr2 = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
|
|
|
+#endif /* test-only */
|
|
|
+ }
|
|
|
+
|
|
|
+ return (info->size);
|
|
|
+}
|
|
|
+
|
|
|
+int wait_for_DQ7(flash_info_t *info, int sect)
|
|
|
+{
|
|
|
+ ulong start, now, last;
|
|
|
+ volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[sect]);
|
|
|
+
|
|
|
+ start = get_timer (0);
|
|
|
+ last = start;
|
|
|
+ while ((addr[0] & (FLASH_WORD_SIZE)0x00800080) != (FLASH_WORD_SIZE)0x00800080) {
|
|
|
+ if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
|
|
|
+ printf ("Timeout\n");
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+ /* show that we're waiting */
|
|
|
+ if ((now - last) > 1000) { /* every second */
|
|
|
+ putc ('.');
|
|
|
+ last = now;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ */
|
|
|
+
|
|
|
+int flash_erase (flash_info_t *info, int s_first, int s_last)
|
|
|
+{
|
|
|
+ volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *)(info->start[0]);
|
|
|
+ volatile FLASH_WORD_SIZE *addr2;
|
|
|
+ int flag, prot, sect, l_sect;
|
|
|
+ int i;
|
|
|
+
|
|
|
+ if ((s_first < 0) || (s_first > s_last)) {
|
|
|
+ if (info->flash_id == FLASH_UNKNOWN) {
|
|
|
+ printf ("- missing\n");
|
|
|
+ } else {
|
|
|
+ printf ("- no sectors to erase\n");
|
|
|
+ }
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (info->flash_id == FLASH_UNKNOWN) {
|
|
|
+ printf ("Can't erase unknown flash type - aborted\n");
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ prot = 0;
|
|
|
+ for (sect=s_first; sect<=s_last; ++sect) {
|
|
|
+ if (info->protect[sect]) {
|
|
|
+ prot++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (prot) {
|
|
|
+ printf ("- Warning: %d protected sectors will not be erased!\n",
|
|
|
+ prot);
|
|
|
+ } else {
|
|
|
+ printf ("\n");
|
|
|
+ }
|
|
|
+
|
|
|
+ l_sect = -1;
|
|
|
+
|
|
|
+ /* Disable interrupts which might cause a timeout here */
|
|
|
+ flag = disable_interrupts();
|
|
|
+
|
|
|
+ /* Start erase on unprotected sectors */
|
|
|
+ for (sect = s_first; sect<=s_last; sect++) {
|
|
|
+ if (info->protect[sect] == 0) { /* not protected */
|
|
|
+ addr2 = (FLASH_WORD_SIZE *)(info->start[sect]);
|
|
|
+ printf("Erasing sector %p\n", addr2); /* CLH */
|
|
|
+
|
|
|
+ if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
|
|
|
+ addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
|
|
|
+ addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
|
|
|
+ addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
|
|
|
+ addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
|
|
|
+ addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
|
|
|
+ addr2[0] = (FLASH_WORD_SIZE)0x00500050; /* block erase */
|
|
|
+ for (i=0; i<50; i++)
|
|
|
+ udelay(1000); /* wait 1 ms */
|
|
|
+ } else {
|
|
|
+ addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
|
|
|
+ addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
|
|
|
+ addr[ADDR0] = (FLASH_WORD_SIZE)0x00800080;
|
|
|
+ addr[ADDR0] = (FLASH_WORD_SIZE)0x00AA00AA;
|
|
|
+ addr[ADDR1] = (FLASH_WORD_SIZE)0x00550055;
|
|
|
+ addr2[0] = (FLASH_WORD_SIZE)0x00300030; /* sector erase */
|
|
|
+ }
|
|
|
+ l_sect = sect;
|
|
|
+ /*
|
|
|
+ * Wait for each sector to complete, it's more
|
|
|
+ * reliable. According to AMD Spec, you must
|
|
|
+ * issue all erase commands within a specified
|
|
|
+ * timeout. This has been seen to fail, especially
|
|
|
+ * if printf()s are included (for debug)!!
|
|
|
+ */
|
|
|
+ wait_for_DQ7(info, sect);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* re-enable interrupts if necessary */
|
|
|
+ if (flag)
|
|
|
+ enable_interrupts();
|
|
|
+
|
|
|
+ /* wait at least 80us - let's wait 1 ms */
|
|
|
+ udelay (1000);
|
|
|
+
|
|
|
+#if 0
|
|
|
+ /*
|
|
|
+ * We wait for the last triggered sector
|
|
|
+ */
|
|
|
+ if (l_sect < 0)
|
|
|
+ goto DONE;
|
|
|
+ wait_for_DQ7(info, l_sect);
|
|
|
+
|
|
|
+DONE:
|
|
|
+#endif
|
|
|
+ /* reset to read mode */
|
|
|
+ addr = (FLASH_WORD_SIZE *)info->start[0];
|
|
|
+ addr[0] = (FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
|
|
|
+
|
|
|
+ printf (" done\n");
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ * Copy memory to flash, returns:
|
|
|
+ * 0 - OK
|
|
|
+ * 1 - write timeout
|
|
|
+ * 2 - Flash not erased
|
|
|
+ */
|
|
|
+
|
|
|
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
|
+{
|
|
|
+ ulong cp, wp, data;
|
|
|
+ int i, l, rc;
|
|
|
+
|
|
|
+ wp = (addr & ~3); /* get lower word aligned address */
|
|
|
+
|
|
|
+ /*
|
|
|
+ * handle unaligned start bytes
|
|
|
+ */
|
|
|
+ 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);
|
|
|
+}
|
|
|
+
|
|
|
+/*-----------------------------------------------------------------------
|
|
|
+ */
|