sandbox: Renamed sb command to host

As suggested by Simon Glass, rename the sb command to host but keep the
old sb command as an alias

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/common/cmd_host.c b/common/cmd_host.c
new file mode 100644
index 0000000..d20f592
--- /dev/null
+++ b/common/cmd_host.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2012, Google Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <fs.h>
+#include <part.h>
+#include <sandboxblockdev.h>
+#include <asm/errno.h>
+
+static int do_host_load(cmd_tbl_t *cmdtp, int flag, int argc,
+			   char * const argv[])
+{
+	return do_load(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
+}
+
+static int do_host_ls(cmd_tbl_t *cmdtp, int flag, int argc,
+			   char * const argv[])
+{
+	return do_ls(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
+}
+
+static int do_host_save(cmd_tbl_t *cmdtp, int flag, int argc,
+			   char * const argv[])
+{
+	return do_save(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
+}
+
+static int do_host_bind(cmd_tbl_t *cmdtp, int flag, int argc,
+			   char * const argv[])
+{
+	if (argc < 2 || argc > 3)
+		return CMD_RET_USAGE;
+	char *ep;
+	char *dev_str = argv[1];
+	char *file = argc >= 3 ? argv[2] : NULL;
+	int dev = simple_strtoul(dev_str, &ep, 16);
+	if (*ep) {
+		printf("** Bad device specification %s **\n", dev_str);
+		return CMD_RET_USAGE;
+	}
+	return host_dev_bind(dev, file);
+}
+
+static int do_host_info(cmd_tbl_t *cmdtp, int flag, int argc,
+			   char * const argv[])
+{
+	if (argc < 1 || argc > 2)
+		return CMD_RET_USAGE;
+	int min_dev = 0;
+	int max_dev = CONFIG_HOST_MAX_DEVICES - 1;
+	if (argc >= 2) {
+		char *ep;
+		char *dev_str = argv[1];
+		int dev = simple_strtoul(dev_str, &ep, 16);
+		if (*ep) {
+			printf("** Bad device specification %s **\n", dev_str);
+			return CMD_RET_USAGE;
+		}
+		min_dev = dev;
+		max_dev = dev;
+	}
+	int dev;
+	printf("%3s %12s %s\n", "dev", "blocks", "path");
+	for (dev = min_dev; dev <= max_dev; dev++) {
+		block_dev_desc_t *blk_dev;
+		int ret;
+
+		printf("%3d ", dev);
+		ret = host_get_dev_err(dev, &blk_dev);
+		if (ret) {
+			if (ret == -ENOENT)
+				puts("Not bound to a backing file\n");
+			else if (ret == -ENODEV)
+				puts("Invalid host device number\n");
+
+			continue;
+		}
+		struct host_block_dev *host_dev = blk_dev->priv;
+		printf("%12lu %s\n", (unsigned long)blk_dev->lba,
+		       host_dev->filename);
+	}
+	return 0;
+}
+
+static cmd_tbl_t cmd_host_sub[] = {
+	U_BOOT_CMD_MKENT(load, 7, 0, do_host_load, "", ""),
+	U_BOOT_CMD_MKENT(ls, 3, 0, do_host_ls, "", ""),
+	U_BOOT_CMD_MKENT(save, 6, 0, do_host_save, "", ""),
+	U_BOOT_CMD_MKENT(bind, 3, 0, do_host_bind, "", ""),
+	U_BOOT_CMD_MKENT(info, 3, 0, do_host_info, "", ""),
+};
+
+static int do_host(cmd_tbl_t *cmdtp, int flag, int argc,
+		      char * const argv[])
+{
+	cmd_tbl_t *c;
+
+	/* Skip past 'host' */
+	argc--;
+	argv++;
+
+	c = find_cmd_tbl(argv[0], cmd_host_sub,
+			 ARRAY_SIZE(cmd_host_sub));
+
+	if (c)
+		return c->cmd(cmdtp, flag, argc, argv);
+	else
+		return CMD_RET_USAGE;
+}
+
+U_BOOT_CMD(
+	sb,	8,	1,	do_host,
+	"Deprecated: use 'host' command instead.", ""
+);
+
+U_BOOT_CMD(
+	host, 8, 1, do_host,
+	"Miscellaneous host commands",
+	"load hostfs - <addr> <filename> [<bytes> <offset>]  - "
+		"load a file from host\n"
+	"host ls hostfs - <filename>                    - list files on host\n"
+	"host save hostfs - <addr> <filename> <bytes> [<offset>] - "
+		"save a file to host\n"
+	"host bind <dev> [<filename>] - bind \"host\" device to file\n"
+	"host info [<dev>]            - show device binding & info\n"
+	"host commands use the \"hostfs\" device. The \"host\" device is used\n"
+	"with standard IO commands such as fatls or ext2load"
+);