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-rw-r--r--common/cmd_flash.c433
1 files changed, 433 insertions, 0 deletions
diff --git a/common/cmd_flash.c b/common/cmd_flash.c
new file mode 100644
index 0000000..92faf62
--- /dev/null
+++ b/common/cmd_flash.c
@@ -0,0 +1,433 @@
+/*
+ * (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 */
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