161 lines
3.2 KiB
C
161 lines
3.2 KiB
C
/*
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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 <cfi_flash.h>
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#include <errno.h>
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#include <getopt.h>
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#include <fs.h>
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#include <fcntl.h>
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#include <linux/stat.h>
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int do_flerase (cmd_tbl_t *cmdtp, int argc, char *argv[])
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{
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int fd;
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char *filename = NULL;
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struct stat s;
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unsigned long start = 0, size = ~0;
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if (argc == 1) {
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u_boot_cmd_usage(cmdtp);
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return 1;
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}
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filename = argv[1];
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if (stat(filename, &s)) {
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printf("stat %s: %s\n", filename, errno_str());
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return 1;
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}
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size = s.st_size;
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if (!filename) {
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printf("missing filename\n");
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return 1;
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}
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fd = open(filename, O_WRONLY);
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if (fd < 0) {
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printf("open %s:", filename, errno_str());
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return 1;
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}
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if (argc == 2)
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parse_area_spec(argv[optind], &start, &size);
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if(erase(fd, size, start)) {
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perror("erase");
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return 1;
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}
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close(fd);
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return 0;
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}
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static __maybe_unused char cmd_erase_help[] =
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"Usage: Erase <device> [area]\n"
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"Erase a flash device or parts of a device if an area specification\n"
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"is given\n";
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U_BOOT_CMD_START(erase)
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.maxargs = CONFIG_MAXARGS,
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.cmd = do_flerase,
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.usage = "erase FLASH memory",
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U_BOOT_CMD_HELP(cmd_erase_help)
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U_BOOT_CMD_END
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int do_protect (cmd_tbl_t *cmdtp, int argc, char *argv[])
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{
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int fd;
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char *filename = NULL;
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struct stat s;
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int prot = 1;
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unsigned long start = 0, size = ~0;
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if (argc == 1) {
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u_boot_cmd_usage(cmdtp);
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return 1;
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}
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filename = argv[1];
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if (*argv[0] == 'u')
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prot = 0;
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if (stat(filename, &s)) {
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printf("stat %s: %s\n", filename, errno_str());
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return 1;
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}
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size = s.st_size;
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if (!filename) {
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printf("missing filename\n");
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return 1;
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}
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fd = open(filename, O_WRONLY);
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if (fd < 0) {
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printf("open %s:", filename, errno_str());
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return 1;
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}
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if (argc == 3)
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parse_area_spec(argv[optind], &start, &size);
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if(protect(fd, size, start, prot)) {
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perror("protect");
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return 1;
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}
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close(fd);
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return 0;
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}
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static __maybe_unused char cmd_protect_help[] =
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"Usage: (un)protect <device> [area]\n"
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"(un)protect a flash device or parts of a device if an area specification\n"
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"is given\n";
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U_BOOT_CMD_START(protect)
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.maxargs = 4,
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.cmd = do_protect,
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.usage = "enable FLASH write protection",
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U_BOOT_CMD_HELP(cmd_protect_help)
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U_BOOT_CMD_END
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U_BOOT_CMD_START(unprotect)
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.maxargs = 4,
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.cmd = do_protect,
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.usage = "disable FLASH write protection",
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U_BOOT_CMD_HELP(cmd_protect_help)
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U_BOOT_CMD_END
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