Initial revision

common/cmd_flash.c

+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * FLASH support
+ */
+#include <common.h>
+#include <command.h>
+#include <cmd_boot.h>
+#include <flash.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_FLASH)
+
+extern flash_info_t flash_info[];	/* info for FLASH chips */
+
+/*
+ * The user interface starts numbering for Flash banks with 1
+ * for historical reasons.
+ */
+
+/*
+ * this routine looks for an abbreviated flash range specification.
+ * the syntax is B:SF[-SL], where B is the bank number, SF is the first
+ * sector to erase, and SL is the last sector to erase (defaults to SF).
+ * bank numbers start at 1 to be consistent with other specs, sector numbers
+ * start at zero.
+ *
+ * returns:	1	- correct spec; *pinfo, *psf and *psl are
+ *			  set appropriately
+ *		0	- doesn't look like an abbreviated spec
+ *		-1	- looks like an abbreviated spec, but got
+ *			  a parsing error, a number out of range,
+ *			  or an invalid flash bank.
+ */
+static int
+abbrev_spec(char *str, flash_info_t **pinfo, int *psf, int *psl)
+{
+    flash_info_t *fp;
+    int bank, first, last;
+    char *p, *ep;
+
+    if ((p = strchr(str, ':')) == NULL)
+	return 0;
+    *p++ = '\0';
+
+    bank = simple_strtoul(str, &ep, 10);
+    if (ep == str || *ep != '\0' ||
+      bank < 1 || bank > CFG_MAX_FLASH_BANKS ||
+      (fp = &flash_info[bank - 1])->flash_id == FLASH_UNKNOWN)
+	return -1;
+
+    str = p;
+    if ((p = strchr(str, '-')) != NULL)
+	*p++ = '\0';
+
+    first = simple_strtoul(str, &ep, 10);
+    if (ep == str || *ep != '\0' || first >= fp->sector_count)
+	return -1;
+
+    if (p != NULL) {
+	last = simple_strtoul(p, &ep, 10);
+	if (ep == p || *ep != '\0' ||
+	  last < first || last >= fp->sector_count)
+	    return -1;
+    }
+    else
+	last = first;
+
+    *pinfo = fp;
+    *psf = first;
+    *psl = last;
+
+    return 1;
+}
+int do_flinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	ulong bank;
+
+	if (argc == 1) {	/* print info for all FLASH banks */
+		for (bank=0; bank <CFG_MAX_FLASH_BANKS; ++bank) {
+			printf ("\nBank # %ld: ", bank+1);
+
+			flash_print_info (&flash_info[bank]);
+		}
+		return 0;
+	}
+
+	bank = simple_strtoul(argv[1], NULL, 16);
+	if ((bank < 1) || (bank > CFG_MAX_FLASH_BANKS)) {
+		printf ("Only FLASH Banks # 1 ... # %d supported\n",
+			CFG_MAX_FLASH_BANKS);
+		return 1;
+	}
+	printf ("\nBank # %ld: ", bank);
+	flash_print_info (&flash_info[bank-1]);
+	return 0;
+}
+int do_flerase (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	flash_info_t *info;
+	ulong bank, addr_first, addr_last;
+	int n, sect_first, sect_last;
+	int rcode = 0;
+
+	if (argc < 2) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if (strcmp(argv[1], "all") == 0) {
+		for (bank=1; bank<=CFG_MAX_FLASH_BANKS; ++bank) {
+			printf ("Erase Flash Bank # %ld ", bank);
+			info = &flash_info[bank-1];
+			rcode = flash_erase (info, 0, info->sector_count-1);
+		}
+		return rcode;
+	}
+
+	if ((n = abbrev_spec(argv[1], &info, &sect_first, &sect_last)) != 0) {
+		if (n < 0) {
+			printf("Bad sector specification\n");
+			return 1;
+		}
+		printf ("Erase Flash Sectors %d-%d in Bank # %d ",
+			sect_first, sect_last, (info-flash_info)+1);
+		rcode = flash_erase(info, sect_first, sect_last);
+		return rcode;
+	}
+
+	if (argc != 3) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if (strcmp(argv[1], "bank") == 0) {
+		bank = simple_strtoul(argv[2], NULL, 16);
+		if ((bank < 1) || (bank > CFG_MAX_FLASH_BANKS)) {
+			printf ("Only FLASH Banks # 1 ... # %d supported\n",
+				CFG_MAX_FLASH_BANKS);
+			return 1;
+		}
+		printf ("Erase Flash Bank # %ld ", bank);
+		info = &flash_info[bank-1];
+		rcode = flash_erase (info, 0, info->sector_count-1);
+		return rcode;
+	}
+
+	addr_first = simple_strtoul(argv[1], NULL, 16);
+	addr_last  = simple_strtoul(argv[2], NULL, 16);
+
+	if (addr_first >= addr_last) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	printf ("Erase Flash from 0x%08lx to 0x%08lx ", addr_first, addr_last);
+	rcode = flash_sect_erase(addr_first, addr_last);
+	return rcode;
+}
+
+int flash_sect_erase (ulong addr_first, ulong addr_last)
+{
+	flash_info_t *info;
+	ulong bank;
+	int s_first, s_last;
+	int erased;
+	int rcode = 0;
+
+	erased = 0;
+
+	for (bank=0,info=&flash_info[0]; bank < CFG_MAX_FLASH_BANKS; ++bank, ++info) {
+		ulong b_end;
+		int sect;
+
+		if (info->flash_id == FLASH_UNKNOWN) {
+			continue;
+		}
+
+		b_end = info->start[0] + info->size - 1; /* bank end addr */
+
+		s_first = -1;		/* first sector to erase	*/
+		s_last  = -1;		/* last  sector to erase	*/
+
+		for (sect=0; sect < info->sector_count; ++sect) {
+			ulong end;		/* last address in current sect	*/
+			short s_end;
+
+			s_end = info->sector_count - 1;
+
+			end = (sect == s_end) ? b_end : info->start[sect + 1] - 1;
+
+			if (addr_first > end)
+				continue;
+			if (addr_last < info->start[sect])
+				continue;
+
+			if (addr_first == info->start[sect]) {
+				s_first = sect;
+			}
+			if (addr_last  == end) {
+				s_last  = sect;
+			}
+		}
+		if (s_first>=0 && s_first<=s_last) {
+			erased += s_last - s_first + 1;
+			rcode = flash_erase (info, s_first, s_last);
+		}
+	}
+	if (erased) {
+		printf ("Erased %d sectors\n", erased);
+	} else {
+		printf ("Error: start and/or end address"
+			" not on sector boundary\n");
+		rcode = 1;
+	}
+	return rcode;
+}
+
+
+int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	flash_info_t *info;
+	ulong bank, addr_first, addr_last;
+	int i, p, n, sect_first, sect_last;
+	int rcode = 0;
+
+	if (argc < 3) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if (strcmp(argv[1], "off") == 0)
+		p = 0;
+	else if (strcmp(argv[1], "on") == 0)
+		p = 1;
+	else {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if (strcmp(argv[2], "all") == 0) {
+		for (bank=1; bank<=CFG_MAX_FLASH_BANKS; ++bank) {
+			info = &flash_info[bank-1];
+			if (info->flash_id == FLASH_UNKNOWN) {
+				continue;
+			}
+			printf ("%sProtect Flash Bank # %ld\n",
+				p ? "" : "Un-", bank);
+
+			for (i=0; i<info->sector_count; ++i) {
+#if defined(CFG_FLASH_PROTECTION)
+				if (flash_real_protect(info, i, p))
+					rcode = 1;
+				putc ('.');
+#else
+				info->protect[i] = p;
+#endif	/* CFG_FLASH_PROTECTION */
+			}
+		}
+
+#if defined(CFG_FLASH_PROTECTION)
+		if (!rcode) puts (" done\n");
+#endif	/* CFG_FLASH_PROTECTION */
+
+		return rcode;
+	}
+
+	if ((n = abbrev_spec(argv[2], &info, &sect_first, &sect_last)) != 0) {
+		if (n < 0) {
+			printf("Bad sector specification\n");
+			return 1;
+		}
+		printf("%sProtect Flash Sectors %d-%d in Bank # %d\n",
+			p ? "" : "Un-", sect_first, sect_last,
+			(info-flash_info)+1);
+		for (i = sect_first; i <= sect_last; i++) {
+#if defined(CFG_FLASH_PROTECTION)
+			if (flash_real_protect(info, i, p))
+				rcode =  1;
+			putc ('.');
+#else
+			info->protect[i] = p;
+#endif	/* CFG_FLASH_PROTECTION */
+		}
+
+#if defined(CFG_FLASH_PROTECTION)
+		if (!rcode) puts (" done\n");
+#endif	/* CFG_FLASH_PROTECTION */
+
+		return rcode;
+	}
+
+	if (argc != 4) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if (strcmp(argv[2], "bank") == 0) {
+		bank = simple_strtoul(argv[3], NULL, 16);
+		if ((bank < 1) || (bank > CFG_MAX_FLASH_BANKS)) {
+			printf ("Only FLASH Banks # 1 ... # %d supported\n",
+				CFG_MAX_FLASH_BANKS);
+			return 1;
+		}
+		printf ("%sProtect Flash Bank # %ld\n",
+			p ? "" : "Un-", bank);
+		info = &flash_info[bank-1];
+
+		if (info->flash_id == FLASH_UNKNOWN) {
+			printf ("missing or unknown FLASH type\n");
+			return 1;
+		}
+		for (i=0; i<info->sector_count; ++i) {
+#if defined(CFG_FLASH_PROTECTION)
+			if (flash_real_protect(info, i, p))
+				rcode =  1;
+			putc ('.');
+#else
+			info->protect[i] = p;
+#endif	/* CFG_FLASH_PROTECTION */
+		}
+
+#if defined(CFG_FLASH_PROTECTION)
+		if (!rcode) puts (" done\n");
+#endif	/* CFG_FLASH_PROTECTION */
+
+		return rcode;
+	}
+
+	addr_first = simple_strtoul(argv[2], NULL, 16);
+	addr_last  = simple_strtoul(argv[3], NULL, 16);
+
+	if (addr_first >= addr_last) {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+	rcode = flash_sect_protect (p, addr_first, addr_last);
+	return rcode;
+}
+
+
+int flash_sect_protect (int p, ulong addr_first, ulong addr_last)
+{
+	flash_info_t *info;
+	ulong bank;
+	int s_first, s_last;
+	int protected, i;
+	int rcode = 0;
+
+	protected = 0;
+
+	for (bank=0,info=&flash_info[0]; bank < CFG_MAX_FLASH_BANKS; ++bank, ++info) {
+		ulong b_end;
+		int sect;
+
+		if (info->flash_id == FLASH_UNKNOWN) {
+			continue;
+		}
+
+		b_end = info->start[0] + info->size - 1; /* bank end addr */
+
+		s_first = -1;		/* first sector to erase	*/
+		s_last  = -1;		/* last  sector to erase	*/
+
+		for (sect=0; sect < info->sector_count; ++sect) {
+			ulong end;		/* last address in current sect	*/
+			short s_end;
+
+			s_end = info->sector_count - 1;
+
+			end = (sect == s_end) ? b_end : info->start[sect + 1] - 1;
+
+			if (addr_first > end)
+				continue;
+			if (addr_last < info->start[sect])
+				continue;
+
+			if (addr_first == info->start[sect]) {
+				s_first = sect;
+			}
+			if (addr_last  == end) {
+				s_last  = sect;
+			}
+		}
+		if (s_first>=0 && s_first<=s_last) {
+			protected += s_last - s_first + 1;
+			for (i=s_first; i<=s_last; ++i) {
+#if defined(CFG_FLASH_PROTECTION)
+				if (flash_real_protect(info, i, p))
+					rcode = 1;
+				putc ('.');
+#else
+				info->protect[i] = p;
+#endif	/* CFG_FLASH_PROTECTION */
+			}
+		}
+#if defined(CFG_FLASH_PROTECTION)
+		if (!rcode) putc ('\n');
+#endif	/* CFG_FLASH_PROTECTION */
+
+	}
+	if (protected) {
+		printf ("%sProtected %d sectors\n",
+			p ? "" : "Un-", protected);
+	} else {
+		printf ("Error: start and/or end address"
+			" not on sector boundary\n");
+		rcode = 1;
+	}
+	return rcode;
+}
+
+#endif	/* CFG_CMD_FLASH */