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wdenk 23 years ago
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      common/cmd_flash.c

433
common/cmd_flash.c
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/*
* (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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