initial commit

6 files changed, 991 insertions, 0 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..5016896
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,8 @@
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+AM_CFLAGS = -Wall
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+u_boot_SOURCES = u_boot.c mtd_erase_all.c
+noinst_HEADERS = u_boot.h mtd_erase_all.h
+
+EXTRA_DIST =
+
diff --git a/src/Makefile.in b/src/Makefile.in
new file mode 100644
index 0000000..b5688b0
--- /dev/null
+++ b/src/Makefile.in
@@ -0,0 +1,414 @@
+# Makefile.in generated by automake 1.10.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
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+
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+	    *$$dep*) \
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+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu  src/Makefile
+.PRECIOUS: Makefile
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+	  *config.status*) \
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+	    $$tags $$unique; \
+	fi
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+		$(TAGS_FILES) $(LISP)
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+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
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+	     $$tags $$unique
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+distdir: $(DISTFILES)
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+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
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+	    fi; \
+	    cp -pR $$d/$$file $(distdir)$$dir || exit 1; \
+	  else \
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+	    || cp -p $$d/$$file $(distdir)/$$file \
+	    || exit 1; \
+	  fi; \
+	done
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+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-binPROGRAMS clean-generic mostlyclean-am
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+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
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+	-rm -f Makefile
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+ps: ps-am
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+uninstall-am: uninstall-binPROGRAMS
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+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-binPROGRAMS \
+	clean-generic ctags distclean distclean-compile \
+	distclean-generic distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-binPROGRAMS \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic pdf pdf-am ps ps-am tags uninstall \
+	uninstall-am uninstall-binPROGRAMS
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/mtd_erase_all.c b/src/mtd_erase_all.c
new file mode 100644
index 0000000..342fbe7
--- /dev/null
+++ b/src/mtd_erase_all.c
@@ -0,0 +1,181 @@
+/*
+ * cherry picked from mtd-utils
+ *
+ * Copyright (C) 2000 Arcom Control System Ltd
+ *
+ * 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
+ *
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <zlib.h>
+
+#include <mtd/mtd-abi.h>
+#include <mtd/jffs2-user.h>
+
+#include "u_boot.h"
+
+int target_endian = __BYTE_ORDER;
+
+int mtd_erase_all(const char *mtd_device, int jffs2)
+{
+	int fd;
+	struct mtd_info_user meminfo;
+	struct erase_info_user erase;
+	int clmpos = 0;
+	int clmlen = 8;
+	int isNAND;
+	int bbtest = 1;
+	struct jffs2_unknown_node cleanmarker;
+
+	if ((fd = open(mtd_device, O_RDWR)) < 0) {
+		error("%s: %s", mtd_device, strerror(errno));
+		close(fd);
+		return false;
+	}
+
+	if (ioctl(fd, MEMGETINFO, &meminfo) != 0) {
+		error("%s: unable to get MTD device info", mtd_device);
+		close(fd);
+		return false;
+	}
+
+	erase.length = meminfo.erasesize;
+	isNAND = meminfo.type == MTD_NANDFLASH ? 1 : 0;
+
+	if (jffs2) {
+		cleanmarker.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+		cleanmarker.nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER);
+		if (!isNAND)
+			cleanmarker.totlen = cpu_to_je32(sizeof(struct jffs2_unknown_node));
+		else {
+			struct nand_oobinfo oobinfo;
+
+			if (ioctl(fd, MEMGETOOBSEL, &oobinfo) != 0) {
+				error("%s: unable to get NAND oobinfo", mtd_device);
+				close(fd);
+				return false;
+			}
+
+			/* Check for autoplacement */
+			if (oobinfo.useecc == MTD_NANDECC_AUTOPLACE) {
+				/* Get the position of the free bytes */
+				if (!oobinfo.oobfree[0][1]) {
+					error("Eeep. Autoplacement selected and no empty space in oob");
+					close(fd);
+					return false;
+				}
+				clmpos = oobinfo.oobfree[0][0];
+				clmlen = oobinfo.oobfree[0][1];
+				if (clmlen > 8)
+					clmlen = 8;
+			} else {
+				/* Legacy mode */
+				switch (meminfo.oobsize) {
+					case 8:
+						clmpos = 6;
+						clmlen = 2;
+						break;
+					case 16:
+						clmpos = 8;
+						clmlen = 8;
+						break;
+					case 64:
+						clmpos = 16;
+						clmlen = 8;
+						break;
+				}
+			}
+			cleanmarker.totlen = cpu_to_je32(8);
+		}
+		cleanmarker.hdr_crc= cpu_to_je32(crc32(0, (unsigned char *) &cleanmarker, sizeof(struct jffs2_unknown_node) - 4));
+	}
+
+	for (erase.start = 0; erase.start < meminfo.size; erase.start += meminfo.erasesize) {
+		if (bbtest) {
+			loff_t offset = erase.start;
+			int ret = ioctl(fd, MEMGETBADBLOCK, &offset);
+			if (ret > 0) {
+				dbg("Skipping bad block at 0x%08x", erase.start);
+				continue;
+			} else if (ret < 0) {
+				if (errno == EOPNOTSUPP) {
+					bbtest = 0;
+					if (isNAND) {
+						error("%s: Bad block check not available", mtd_device);
+						close(fd);
+						return false;
+					}
+				} else {
+					error("%s: MTD get bad block failed: %s", mtd_device, strerror(errno));
+					close(fd);
+					return false;
+				}
+			}
+		}
+
+		if (ioctl(fd, MEMERASE, &erase) != 0) {
+			error("%s: MTD Erase failure: %s", mtd_device, strerror(errno));
+			continue;
+		}
+
+		/* format for JFFS2 ? */
+		if (!jffs2)
+			continue;
+
+		/* write cleanmarker */
+		if (isNAND) {
+			struct mtd_oob_buf oob;
+			oob.ptr = (unsigned char *) &cleanmarker;
+			oob.start = erase.start + clmpos;
+			oob.length = clmlen;
+			if (ioctl(fd, MEMWRITEOOB, &oob) != 0) {
+				error("%s: MTD writeoob failure: %s", mtd_device, strerror(errno));
+				continue;
+			}
+		} else {
+			if (lseek(fd, erase.start, SEEK_SET) < 0) {
+				error("%s: MTD lseek failure: %s", mtd_device, strerror(errno));
+				continue;
+			}
+			if (write(fd, &cleanmarker, sizeof(cleanmarker)) != sizeof(cleanmarker)) {
+				error("%s: MTD write failure: %s", mtd_device, strerror(errno));
+				continue;
+			}
+		}
+
+		dbg("Cleanmarker written at %x.", erase.start);
+	}
+
+	close(fd);
+
+	return true;
+}
+
+
+
+
diff --git a/src/mtd_erase_all.h b/src/mtd_erase_all.h
new file mode 100644
index 0000000..a5edae1
--- /dev/null
+++ b/src/mtd_erase_all.h
@@ -0,0 +1,6 @@
+#ifndef __MTD_ERASE_ALL_H
+#define __MTD_ERASE_ALL_H
+
+int mtd_erase_all(const char *mtd_device, int jffs2);
+
+#endif /* ~__MTD_ERASE_ALL_H */
diff --git a/src/u_boot.c b/src/u_boot.c
new file mode 100644
index 0000000..e240475
--- /dev/null
+++ b/src/u_boot.c
@@ -0,0 +1,363 @@
+/*
+ * U-Boot utility program for Linux
+ *
+ * Copyright (C) 2010 by Multi-Tech Systems
+ *
+ * Author: James Maki <jmaki@multitech.com>
+ *
+ * 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
+ *
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <zlib.h>
+
+#include "u_boot.h"
+
+static int tokcmp(const char *cmd, const char *pattern) {
+	int len = strlen(cmd);
+	if (len > strlen(pattern)) {
+		return -1;
+	}
+
+	return memcmp(pattern, cmd, len);
+}
+
+#define ENV_HEADER_SIZE		(sizeof(uint32_t) + sizeof(uint8_t))
+#define ENV_DATA_SIZE		(MTD_SIZE - ENV_HEADER_SIZE)
+
+struct environment {
+	uint32_t crc;
+	uint8_t flags;
+	char data[ENV_DATA_SIZE];
+};
+
+static int write_uboot_env(const char *device, struct environment *env)
+{
+	int err;
+	int fd;
+
+	err = mtd_erase_all(device, 0);
+	if (!err) {
+		error("mtd_erase_all %s failed", device);
+		return -1;
+	}
+
+	fd = open(device, O_WRONLY);
+	if (fd < 0) {
+		error("open %s failed: %d", device, errno);
+		return -1;
+	}
+
+	err = write(fd, env, sizeof(*env));
+	if (err != sizeof(*env)) {
+		error("write to %s failed: %d", device, errno);
+		close(fd);
+		return -1;
+	}
+
+	close(fd);
+
+	return err;
+}
+
+static int read_uboot_env(const char *device, struct environment *env)
+{
+	int fd;
+	int err;
+
+	memset(env, 0, sizeof(*env));
+
+	fd = open(device, O_RDONLY);
+	if (fd < 0) {
+		error("open %s failed: %d", device, errno);
+		return -1;
+	}
+
+	err = read(fd, env, sizeof(*env));
+	if (err != sizeof(*env)) {
+		error("read from %s failed: %d", device, errno);
+		close(fd);
+		return -1;
+	}
+
+	close(fd);
+
+	return err;
+}
+
+static char *next_var(const char *var)
+{
+	return (char *) (var + strlen(var) + 1);
+}
+
+static int cmd_printenv(struct environment *env, int argc, char **argv)
+{
+	char *var;
+	char *name = NULL;
+	size_t name_len = 0;
+
+	if (argc) {
+		name = *argv;
+		name_len = strlen(name);
+	}
+
+	var = env->data;
+	while (*var) {
+		if (!name) {
+			printf("%s\n", var);
+		} else if (!strncmp(var, name, name_len) && var[name_len] == '=') {
+			printf("%s\n", var);
+			return true;
+		}
+
+		var = next_var(var);
+	}
+
+	if (name) {
+		fprintf(stderr, "environment variable not found\n");
+		return false;
+	}
+
+	return true;
+}
+
+static int cmd_setenv(struct environment *env, int argc, char **argv)
+{
+	int tmp;
+	char *var;
+	char *cp;
+	char *end = env->data + sizeof(env->data);
+	char *name;
+	size_t name_len;
+	size_t value_len;
+
+	if (!argc) {
+		fprintf(stderr, "name expected\n");
+		return false;
+	}
+	name = *argv;
+	argc--; argv++;
+
+	name_len = strlen(name);
+
+	var = env->data;
+	while (*var) {
+		if (!strncmp(var, name, name_len) && var[name_len] == '=') {
+			dbg("found variable (%s) at %lld", var, (long long int) var);
+
+			cp = next_var(var);
+			while (*cp) {
+				while (*cp) {
+					*var++ = *cp++;
+				}
+				*var++ = *cp++;
+			}
+
+			break;
+		}
+
+		var = next_var(var);
+	}
+
+	value_len = 0;
+	for (tmp = 0; tmp < argc; tmp++) {
+		value_len += strlen(argv[tmp]);
+		if (tmp + 1 < argc) {
+			value_len += 1;
+		}
+	}
+
+	if (value_len) {
+		if (var + strlen(name) + strlen("=") + value_len + 1 >= end) {
+			error("end of environment reached");
+			return false;
+		}
+		*var = 0;
+		strcat(var, name);
+		strcat(var, "=");
+		for (tmp = 0; tmp < argc; tmp++) {
+			strcat(var, argv[tmp]);
+			if (tmp + 1 < argc) {
+				strcat(var, " ");
+			}
+		}
+		var += strlen(var) + 1;
+	}
+
+	*var = 0;
+	if (var == env->data) {
+		*(var + 1) = 0;
+	}
+
+	env->crc = crc32(0, (uint8_t *) env->data, sizeof(env->data));
+	dbg("crc: 0x%08X", env->crc);
+	env->flags = 0;
+
+	tmp = write_uboot_env(MTD_ENV1, env);
+	if (tmp < 0) {
+		dbg("write_uboot_env %s failed with %d", MTD_ENV1, tmp);
+	}
+	tmp = write_uboot_env(MTD_ENV2, env);
+	if (tmp < 0) {
+		dbg("write_uboot_env %s failed with %d", MTD_ENV1, tmp);
+	}
+
+	return true;
+}
+
+static void print_version(const char *name) {
+	printf("%s (" PACKAGE ") " VERSION " (" __DATE__ " " __TIME__ ")\n", name);
+	printf("Copyright (C) 2010 by Multi-Tech Systems\n");
+	printf(
+"This program is free software; you may redistribute it under the terms of\n"
+"the GNU General Public License version 2 or (at your option) any later version.\n"
+"This program has absolutely no warranty.\n");
+}
+
+static void usage(FILE *out) {
+	fprintf(out, "Usage: u-boot { printenv [ name ] | setenv name [ value ] }\n");
+	fprintf(out, "\n");
+}
+
+int main(int argc, char *argv[]) {
+	int err;
+	char *cmd;
+	char *option;
+	struct environment *env = NULL;
+
+	struct environment *env1;
+	struct environment *env2;
+	uint32_t crc1_ok;
+	uint32_t crc2_ok;
+
+	if (argc <= 1) {
+		usage(stderr);
+		exit(1);
+	}
+	argc--; argv++;
+
+	while (argc) {
+		option = *argv;
+		if (*option != '-') {
+			break;
+		} else if (!strcmp(option, "--")) {
+			break;
+		} else if (!strcmp(option, "--version")) {
+			print_version("u-boot");
+			exit(0);
+		} else if (!strcmp(option, "--help")) {
+			usage(stdout);
+			exit(0);
+		} else {
+			usage(stderr);
+			exit(1);
+		}
+
+		argc--; argv++;
+	}
+
+	if (!argc) {
+		usage(stderr);
+		exit(1);
+	}
+
+	env1 = malloc(sizeof(struct environment));
+	if (!env1) {
+		error("out of memory");
+		return 1;
+	}
+
+	env2 = malloc(sizeof(struct environment));
+	if (!env2) {
+		error("out of memory");
+		return 1;
+	}
+
+	err = read_uboot_env(MTD_ENV1, env1);
+	if (err < 0) {
+		error("read_uboot_env failed");
+		return 1;
+	}
+	dbg("env1 crc: 0x%08X", env1->crc);
+	dbg("env1 flags: %d", env1->flags);
+	if (crc32(0, (uint8_t *) env1->data, sizeof(env1->data)) == env1->crc) {
+		crc1_ok = 1;
+	} else {
+		error("crc does not match on primary env");
+		crc1_ok = 0;
+	}
+
+	err = read_uboot_env(MTD_ENV2, env2);
+	if (err < 0) {
+		error("read_uboot_env failed");
+		return 1;
+	}
+	dbg("env2 crc: 0x%08X", env2->crc);
+	dbg("env2 flags: %d", env2->flags);
+	if (crc32(0, (uint8_t *) env2->data, sizeof(env2->data)) == env2->crc) {
+		crc2_ok = 1;
+	} else {
+		error("crc does not match on redundant env");
+		crc2_ok = 0;
+	}
+
+	if (!crc1_ok && !crc2_ok) {
+		error("both environments are bad: loading DEFAULT_ENV");
+		env = env1;
+		env->flags = 0;
+		memcpy(env->data, DEFAULT_ENV, sizeof(DEFAULT_ENV));
+	} else if (crc1_ok && !crc2_ok) {
+		env = env1;
+	} else if (!crc1_ok && crc2_ok) {
+		env = env2;
+	} else {
+		if (env1->flags == 255 && env2->flags == 0) {
+			env = env2;
+		} else if (env2->flags == 255 && env1->flags == 0) {
+			env = env1;
+		} else if (env1->flags > env2->flags) {
+			env = env1;
+		} else if (env2->flags > env1->flags) {
+			env = env2;
+		} else {
+			env = env1;
+		}
+	}
+
+	cmd = *argv;
+	argc--; argv++;
+	if (!tokcmp(cmd, "printenv")) {
+		err = cmd_printenv(env, argc, argv);
+	} else if (!tokcmp(cmd, "setenv")) {
+		err = cmd_setenv(env, argc, argv);
+	} else {
+		usage(stderr);
+		exit(1);
+	}
+
+	return !err;
+}
+
diff --git a/src/u_boot.h b/src/u_boot.h
new file mode 100644
index 0000000..5106601
--- /dev/null
+++ b/src/u_boot.h
@@ -0,0 +1,19 @@
+#ifndef __U_BOOT_H
+#define __U_BOOT_H
+
+#include "config.h"
+
+#if DEBUG
+#define dbg(format, arg...) fprintf(stderr, "DEBUG: %s:%s:%d: " format "\n" , __FILE__ , __func__ , __LINE__ , ## arg)
+#else
+#define dbg(format, arg...) do {} while (0)
+#endif
+
+#define error(format, arg...) fprintf(stderr, "ERROR: %s:%s:%d: " format "\n" , __FILE__ , __func__ , __LINE__ , ## arg)
+
+enum {
+	false,
+	true,
+};
+
+#endif /* ~__U_BOOT_H */