From 2f7f1bd2415b74d98cfb8e0a0cd5e6436261de4a Mon Sep 17 00:00:00 2001
From: "H. Nikolaus Schaller" <hns@goldelico.com>
Date: Thu, 10 Jan 2013 10:20:32 +0100
Subject: added ext4 patch from https://github.com/gonzoua/u-boot-pi because I
 could not find a patch set

---
 u-boot/common/cmd_ext4.c | 140 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100755 u-boot/common/cmd_ext4.c

(limited to 'u-boot/common')

diff --git a/u-boot/common/cmd_ext4.c b/u-boot/common/cmd_ext4.c
new file mode 100755
index 0000000..dcf76a5
--- /dev/null
+++ b/u-boot/common/cmd_ext4.c
@@ -0,0 +1,140 @@
+/*
+ * (C) Copyright 2011 - 2012 Samsung Electronics
+ * EXT4 filesystem implementation in Uboot by
+ * Uma Shankar <uma.shankar@samsung.com>
+ * Manjunatha C Achar <a.manjunatha@samsung.com>
+ *
+ * Ext4fs support
+ * made from existing cmd_ext2.c file of Uboot
+ *
+ * (C) Copyright 2004
+ * esd gmbh <www.esd-electronics.com>
+ * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
+ *
+ * made from cmd_reiserfs by
+ *
+ * (C) Copyright 2003 - 2004
+ * Sysgo Real-Time Solutions, AG <www.elinos.com>
+ * Pavel Bartusek <pba@sysgo.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
+ *
+ */
+
+/*
+ * Changelog:
+ *	0.1 - Newly created file for ext4fs support. Taken from cmd_ext2.c
+ *	        file in uboot. Added ext4fs ls load and write support.
+ */
+
+#include <common.h>
+#include <part.h>
+#include <config.h>
+#include <command.h>
+#include <image.h>
+#include <linux/ctype.h>
+#include <asm/byteorder.h>
+#include <ext4fs.h>
+#include <linux/stat.h>
+#include <malloc.h>
+#include <fs.h>
+
+#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
+#include <usb.h>
+#endif
+
+int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
+						char *const argv[])
+{
+	return do_load(cmdtp, flag, argc, argv, FS_TYPE_EXT, 16);
+}
+
+int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+	return do_ls(cmdtp, flag, argc, argv, FS_TYPE_EXT);
+}
+
+#if defined(CONFIG_CMD_EXT4_WRITE)
+int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc,
+				char *const argv[])
+{
+	const char *filename = "/";
+	int dev, part;
+	unsigned long ram_address;
+	unsigned long file_size;
+	disk_partition_t info;
+	block_dev_desc_t *dev_desc;
+
+	if (argc < 6)
+		return cmd_usage(cmdtp);
+
+	part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1);
+	if (part < 0)
+		return 1;
+
+	dev = dev_desc->dev;
+
+	/* get the filename */
+	filename = argv[3];
+
+	/* get the address in hexadecimal format (string to int) */
+	ram_address = simple_strtoul(argv[4], NULL, 16);
+
+	/* get the filesize in base 10 format */
+	file_size = simple_strtoul(argv[5], NULL, 10);
+
+	/* set the device as block device */
+	ext4fs_set_blk_dev(dev_desc, &info);
+
+	/* mount the filesystem */
+	if (!ext4fs_mount(info.size)) {
+		printf("Bad ext4 partition %s %d:%d\n", argv[1], dev, part);
+		goto fail;
+	}
+
+	/* start write */
+	if (ext4fs_write(filename, (unsigned char *)ram_address, file_size)) {
+		printf("** Error ext4fs_write() **\n");
+		goto fail;
+	}
+	ext4fs_close();
+
+	return 0;
+
+fail:
+	ext4fs_close();
+
+	return 1;
+}
+
+U_BOOT_CMD(ext4write, 6, 1, do_ext4_write,
+	"create a file in the root directory",
+	"<interface> <dev[:part]> [Absolute filename path] [Address] [sizebytes]\n"
+	"    - create a file in / directory");
+
+#endif
+
+U_BOOT_CMD(ext4ls, 4, 1, do_ext4_ls,
+	   "list files in a directory (default /)",
+	   "<interface> <dev[:part]> [directory]\n"
+	   "    - list files from 'dev' on 'interface' in a 'directory'");
+
+U_BOOT_CMD(ext4load, 6, 0, do_ext4_load,
+	   "load binary file from a Ext4 filesystem",
+	   "<interface> <dev[:part]> [addr] [filename] [bytes]\n"
+	   "    - load binary file 'filename' from 'dev' on 'interface'\n"
+	   "      to address 'addr' from ext4 filesystem.\n"
+	   "      All numeric parameters are assumed to be hex.");
-- 
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