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-rw-r--r--commands/mw.c104
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diff --git a/commands/mw.c b/commands/mw.c
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+/*
+ * Copyright (c) 2011 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ *
+ * 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 version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+
+/*
+ * Memory Functions
+ *
+ * Copied from FADS ROM, Dan Malek (dmalek@jlc.net)
+ */
+
+#include <common.h>
+#include <command.h>
+#include <init.h>
+#include <driver.h>
+#include <malloc.h>
+#include <errno.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <linux/stat.h>
+#include <xfuncs.h>
+
+static int do_mem_mw(int argc, char *argv[])
+{
+ int ret = 0;
+ int fd;
+ char *filename = "/dev/mem";
+ int mode = O_RWSIZE_4;
+ loff_t adr;
+ int swab = 0;
+
+ if (mem_parse_options(argc, argv, "bwld:x", &mode, NULL, &filename,
+ &swab) < 0)
+ return 1;
+
+ if (optind + 1 >= argc)
+ return COMMAND_ERROR_USAGE;
+
+ adr = strtoull_suffix(argv[optind++], NULL, 0);
+
+ fd = open_and_lseek(filename, mode | O_WRONLY, adr);
+ if (fd < 0)
+ return 1;
+
+ while (optind < argc) {
+ u8 val8;
+ u16 val16;
+ u32 val32;
+ switch (mode) {
+ case O_RWSIZE_1:
+ val8 = simple_strtoul(argv[optind], NULL, 0);
+ ret = write(fd, &val8, 1);
+ break;
+ case O_RWSIZE_2:
+ val16 = simple_strtoul(argv[optind], NULL, 0);
+ if (swab)
+ val16 = __swab16(val16);
+ ret = write(fd, &val16, 2);
+ break;
+ case O_RWSIZE_4:
+ val32 = simple_strtoul(argv[optind], NULL, 0);
+ if (swab)
+ val32 = __swab32(val32);
+ ret = write(fd, &val32, 4);
+ break;
+ }
+ if (ret < 0) {
+ perror("write");
+ break;
+ }
+ ret = 0;
+ optind++;
+ }
+
+ close(fd);
+
+ return ret ? 1 : 0;
+}
+
+static const __maybe_unused char cmd_mw_help[] =
+"Usage: mw [OPTIONS] <region> <value(s)>\n"
+"Write value(s) to the specifies region.\n"
+"options:\n"
+" -b, -w, -l use byte, halfword, or word accesses\n"
+" -d <file> write file (default /dev/mem)\n";
+
+BAREBOX_CMD_START(mw)
+ .cmd = do_mem_mw,
+ .usage = "memory write (fill)",
+ BAREBOX_CMD_HELP(cmd_mw_help)
+BAREBOX_CMD_END