copy adam2 patch from ar7-2.4 to ar7-2.6

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7014 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/ar7-2.6/base-files.mk

+define Build/Compile
+	$(call Build/Compile/Default)
+	$(TARGET_CC) -o $(PKG_BUILD_DIR)/adam2patcher $(PLATFORM_DIR)/src/adam2patcher.c
+endef
+
+define Package/base-files/install-target
+	mkdir -p $(1)/sbin
+	$(CP) $(PKG_BUILD_DIR)/adam2patcher $(1)/sbin
+endef
+
+

target/linux/ar7-2.6/base-files/default/etc/init.d/adam2

+#!/bin/sh /etc/rc.common
+# ADAM2 patcher for Netgear DG834 and compatible
+# Copyright (C) 2006 OpenWrt.org
+
+START=00
+start() {
+	MD5="$(md5sum /dev/mtdblock/0  | awk '{print $1}')"
+	[ "$MD5" = "0530bfdf00ec155f4182afd70da028c1" ] && {
+		mtd unlock adam2
+		/sbin/adam2patcher /dev/mtdblock/0
+	}
+	rm -f /etc/init.d/S00adam2 /sbin/adam2patcher >&- 2>&-
+}

target/linux/ar7-2.6/src/adam2patcher.c

+/*
+ * patcher.c - ADAM2 patcher for Netgear DG834 (and compatible)
+ *
+ * Copyright (C) 2006 Felix Fietkau
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <string.h>
+
+#include <sys/ioctl.h>
+
+int main(int argc, char **argv)
+{
+	int fd;
+	char *ptr;
+	uint32_t *i;
+
+	if (argc != 2) {
+		fprintf(stderr, "Usage: %s <filename>\n", argv[0]);
+		exit(1);
+	}
+
+	if (((fd = open(argv[1], O_RDWR)) < 0)
+			|| ((ptr = mmap(0, 128 * 1024, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) == (void *) (-1))) {
+		fprintf(stderr, "Can't open file\n");
+		exit(1);
+	}
+
+	i = (uint32_t *) &ptr[0x3944];
+	if (*i == 0x0c000944) {
+		fprintf(stderr, "Unpatched ADAM2 detected. Patching... ");
+		*i = 0x00000000;
+		msync(i, sizeof(*i), MS_SYNC|MS_INVALIDATE);
+		fprintf(stderr, "done!\n");
+	} else if (*i == 0x00000000) {
+		fprintf(stderr, "Patched ADAM2 detected.\n");
+	} else {
+		fprintf(stderr, "Unknown ADAM2 detected. Can't patch!\n");
+	}
+
+	close(fd);		
+}