Initial revision
This commit is contained in:
wdenk
parent
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commit
38a24a612e
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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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* FLASH support
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*/
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#include <common.h>
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#include <command.h>
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#include <cmd_boot.h>
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#include <flash.h>
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#if (CONFIG_COMMANDS & CFG_CMD_FLASH)
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extern flash_info_t flash_info[]; /* info for FLASH chips */
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/*
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* The user interface starts numbering for Flash banks with 1
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* for historical reasons.
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*/
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/*
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* this routine looks for an abbreviated flash range specification.
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* the syntax is B:SF[-SL], where B is the bank number, SF is the first
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* sector to erase, and SL is the last sector to erase (defaults to SF).
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* bank numbers start at 1 to be consistent with other specs, sector numbers
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* start at zero.
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*
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* returns: 1 - correct spec; *pinfo, *psf and *psl are
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* set appropriately
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* 0 - doesn't look like an abbreviated spec
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* -1 - looks like an abbreviated spec, but got
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* a parsing error, a number out of range,
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* or an invalid flash bank.
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*/
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static int
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abbrev_spec(char *str, flash_info_t **pinfo, int *psf, int *psl)
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{
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flash_info_t *fp;
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int bank, first, last;
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char *p, *ep;
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if ((p = strchr(str, ':')) == NULL)
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return 0;
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*p++ = '\0';
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bank = simple_strtoul(str, &ep, 10);
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if (ep == str || *ep != '\0' ||
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bank < 1 || bank > CFG_MAX_FLASH_BANKS ||
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(fp = &flash_info[bank - 1])->flash_id == FLASH_UNKNOWN)
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return -1;
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str = p;
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if ((p = strchr(str, '-')) != NULL)
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*p++ = '\0';
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first = simple_strtoul(str, &ep, 10);
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if (ep == str || *ep != '\0' || first >= fp->sector_count)
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return -1;
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if (p != NULL) {
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last = simple_strtoul(p, &ep, 10);
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if (ep == p || *ep != '\0' ||
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last < first || last >= fp->sector_count)
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return -1;
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}
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else
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last = first;
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*pinfo = fp;
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*psf = first;
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*psl = last;
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return 1;
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}
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int do_flinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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ulong bank;
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if (argc == 1) { /* print info for all FLASH banks */
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for (bank=0; bank <CFG_MAX_FLASH_BANKS; ++bank) {
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printf ("\nBank # %ld: ", bank+1);
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flash_print_info (&flash_info[bank]);
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}
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return 0;
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}
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bank = simple_strtoul(argv[1], NULL, 16);
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if ((bank < 1) || (bank > CFG_MAX_FLASH_BANKS)) {
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printf ("Only FLASH Banks # 1 ... # %d supported\n",
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CFG_MAX_FLASH_BANKS);
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return 1;
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}
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printf ("\nBank # %ld: ", bank);
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flash_print_info (&flash_info[bank-1]);
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return 0;
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}
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int do_flerase (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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flash_info_t *info;
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ulong bank, addr_first, addr_last;
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int n, sect_first, sect_last;
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int rcode = 0;
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if (argc < 2) {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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if (strcmp(argv[1], "all") == 0) {
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for (bank=1; bank<=CFG_MAX_FLASH_BANKS; ++bank) {
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printf ("Erase Flash Bank # %ld ", bank);
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info = &flash_info[bank-1];
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rcode = flash_erase (info, 0, info->sector_count-1);
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}
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return rcode;
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}
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if ((n = abbrev_spec(argv[1], &info, §_first, §_last)) != 0) {
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if (n < 0) {
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printf("Bad sector specification\n");
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return 1;
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}
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printf ("Erase Flash Sectors %d-%d in Bank # %d ",
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sect_first, sect_last, (info-flash_info)+1);
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rcode = flash_erase(info, sect_first, sect_last);
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return rcode;
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}
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if (argc != 3) {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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if (strcmp(argv[1], "bank") == 0) {
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bank = simple_strtoul(argv[2], NULL, 16);
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if ((bank < 1) || (bank > CFG_MAX_FLASH_BANKS)) {
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printf ("Only FLASH Banks # 1 ... # %d supported\n",
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CFG_MAX_FLASH_BANKS);
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return 1;
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}
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printf ("Erase Flash Bank # %ld ", bank);
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info = &flash_info[bank-1];
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rcode = flash_erase (info, 0, info->sector_count-1);
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return rcode;
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}
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addr_first = simple_strtoul(argv[1], NULL, 16);
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addr_last = simple_strtoul(argv[2], NULL, 16);
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if (addr_first >= addr_last) {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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printf ("Erase Flash from 0x%08lx to 0x%08lx ", addr_first, addr_last);
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rcode = flash_sect_erase(addr_first, addr_last);
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return rcode;
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}
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int flash_sect_erase (ulong addr_first, ulong addr_last)
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{
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flash_info_t *info;
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ulong bank;
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int s_first, s_last;
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int erased;
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int rcode = 0;
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erased = 0;
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for (bank=0,info=&flash_info[0]; bank < CFG_MAX_FLASH_BANKS; ++bank, ++info) {
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ulong b_end;
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int sect;
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if (info->flash_id == FLASH_UNKNOWN) {
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continue;
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}
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b_end = info->start[0] + info->size - 1; /* bank end addr */
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s_first = -1; /* first sector to erase */
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s_last = -1; /* last sector to erase */
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for (sect=0; sect < info->sector_count; ++sect) {
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ulong end; /* last address in current sect */
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short s_end;
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s_end = info->sector_count - 1;
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end = (sect == s_end) ? b_end : info->start[sect + 1] - 1;
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if (addr_first > end)
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continue;
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if (addr_last < info->start[sect])
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continue;
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if (addr_first == info->start[sect]) {
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s_first = sect;
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}
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if (addr_last == end) {
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s_last = sect;
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}
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}
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if (s_first>=0 && s_first<=s_last) {
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erased += s_last - s_first + 1;
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rcode = flash_erase (info, s_first, s_last);
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}
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}
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if (erased) {
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printf ("Erased %d sectors\n", erased);
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} else {
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printf ("Error: start and/or end address"
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" not on sector boundary\n");
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rcode = 1;
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}
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return rcode;
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}
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int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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flash_info_t *info;
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ulong bank, addr_first, addr_last;
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int i, p, n, sect_first, sect_last;
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int rcode = 0;
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if (argc < 3) {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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if (strcmp(argv[1], "off") == 0)
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p = 0;
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else if (strcmp(argv[1], "on") == 0)
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p = 1;
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else {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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if (strcmp(argv[2], "all") == 0) {
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for (bank=1; bank<=CFG_MAX_FLASH_BANKS; ++bank) {
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info = &flash_info[bank-1];
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if (info->flash_id == FLASH_UNKNOWN) {
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continue;
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}
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printf ("%sProtect Flash Bank # %ld\n",
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p ? "" : "Un-", bank);
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for (i=0; i<info->sector_count; ++i) {
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#if defined(CFG_FLASH_PROTECTION)
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if (flash_real_protect(info, i, p))
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rcode = 1;
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putc ('.');
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#else
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info->protect[i] = p;
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#endif /* CFG_FLASH_PROTECTION */
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}
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}
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#if defined(CFG_FLASH_PROTECTION)
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if (!rcode) puts (" done\n");
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#endif /* CFG_FLASH_PROTECTION */
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return rcode;
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}
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if ((n = abbrev_spec(argv[2], &info, §_first, §_last)) != 0) {
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if (n < 0) {
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printf("Bad sector specification\n");
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return 1;
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}
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printf("%sProtect Flash Sectors %d-%d in Bank # %d\n",
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p ? "" : "Un-", sect_first, sect_last,
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(info-flash_info)+1);
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for (i = sect_first; i <= sect_last; i++) {
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#if defined(CFG_FLASH_PROTECTION)
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if (flash_real_protect(info, i, p))
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rcode = 1;
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putc ('.');
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#else
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info->protect[i] = p;
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#endif /* CFG_FLASH_PROTECTION */
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}
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#if defined(CFG_FLASH_PROTECTION)
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if (!rcode) puts (" done\n");
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#endif /* CFG_FLASH_PROTECTION */
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return rcode;
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}
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if (argc != 4) {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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if (strcmp(argv[2], "bank") == 0) {
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bank = simple_strtoul(argv[3], NULL, 16);
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if ((bank < 1) || (bank > CFG_MAX_FLASH_BANKS)) {
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printf ("Only FLASH Banks # 1 ... # %d supported\n",
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CFG_MAX_FLASH_BANKS);
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return 1;
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}
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printf ("%sProtect Flash Bank # %ld\n",
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p ? "" : "Un-", bank);
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info = &flash_info[bank-1];
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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 1;
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}
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for (i=0; i<info->sector_count; ++i) {
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#if defined(CFG_FLASH_PROTECTION)
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if (flash_real_protect(info, i, p))
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rcode = 1;
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putc ('.');
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#else
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info->protect[i] = p;
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#endif /* CFG_FLASH_PROTECTION */
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}
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#if defined(CFG_FLASH_PROTECTION)
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if (!rcode) puts (" done\n");
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#endif /* CFG_FLASH_PROTECTION */
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return rcode;
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}
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addr_first = simple_strtoul(argv[2], NULL, 16);
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addr_last = simple_strtoul(argv[3], NULL, 16);
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if (addr_first >= addr_last) {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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rcode = flash_sect_protect (p, addr_first, addr_last);
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return rcode;
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}
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int flash_sect_protect (int p, ulong addr_first, ulong addr_last)
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{
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flash_info_t *info;
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ulong bank;
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int s_first, s_last;
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int protected, i;
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int rcode = 0;
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protected = 0;
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for (bank=0,info=&flash_info[0]; bank < CFG_MAX_FLASH_BANKS; ++bank, ++info) {
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ulong b_end;
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int sect;
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if (info->flash_id == FLASH_UNKNOWN) {
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continue;
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}
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b_end = info->start[0] + info->size - 1; /* bank end addr */
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s_first = -1; /* first sector to erase */
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s_last = -1; /* last sector to erase */
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for (sect=0; sect < info->sector_count; ++sect) {
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ulong end; /* last address in current sect */
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short s_end;
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s_end = info->sector_count - 1;
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end = (sect == s_end) ? b_end : info->start[sect + 1] - 1;
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if (addr_first > end)
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continue;
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if (addr_last < info->start[sect])
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continue;
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if (addr_first == info->start[sect]) {
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s_first = sect;
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}
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if (addr_last == end) {
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s_last = sect;
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}
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}
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if (s_first>=0 && s_first<=s_last) {
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protected += s_last - s_first + 1;
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for (i=s_first; i<=s_last; ++i) {
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#if defined(CFG_FLASH_PROTECTION)
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if (flash_real_protect(info, i, p))
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rcode = 1;
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putc ('.');
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#else
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info->protect[i] = p;
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#endif /* CFG_FLASH_PROTECTION */
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}
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}
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#if defined(CFG_FLASH_PROTECTION)
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if (!rcode) putc ('\n');
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#endif /* CFG_FLASH_PROTECTION */
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}
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if (protected) {
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printf ("%sProtected %d sectors\n",
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p ? "" : "Un-", protected);
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} else {
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printf ("Error: start and/or end address"
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" not on sector boundary\n");
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rcode = 1;
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}
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return rcode;
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}
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#endif /* CFG_CMD_FLASH */
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