sandbox: Add 'sb' command to access filesystem features

The new 'sb' command is intended to deal with sandbox-specific features
that have no parallel in other archs. This commit adds two sub-commands
to list a directory and read a file from the host filesystem.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@ti.com>

README

@@ -877,6 +877,7 @@ The following options need to be configured:
 		CONFIG_CMD_READ		* Read raw data from partition
 		CONFIG_CMD_REGINFO	* Register dump
 		CONFIG_CMD_RUN		  run command in env variable
+		CONFIG_CMD_SANDBOX	* sb command to access sandbox features
 		CONFIG_CMD_SAVES	* save S record dump
 		CONFIG_CMD_SCSI		* SCSI Support
 		CONFIG_CMD_SDRAM	* print SDRAM configuration information

common/Makefile

@@ -152,6 +152,7 @@ COBJS-$(CONFIG_CMD_PXE) += cmd_pxe.o
 COBJS-$(CONFIG_CMD_READ) += cmd_read.o
 COBJS-$(CONFIG_CMD_REGINFO) += cmd_reginfo.o
 COBJS-$(CONFIG_CMD_REISER) += cmd_reiser.o
+COBJS-$(CONFIG_SANDBOX) += cmd_sandbox.o
 COBJS-$(CONFIG_CMD_SATA) += cmd_sata.o
 COBJS-$(CONFIG_CMD_SF) += cmd_sf.o
 COBJS-$(CONFIG_CMD_SCSI) += cmd_scsi.o

common/cmd_sandbox.c

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2012, Google Inc.
+ *
+ * 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 <common.h>
+#include <fs.h>
+
+static int do_sandbox_load(cmd_tbl_t *cmdtp, int flag, int argc,
+			   char * const argv[])
+{
+	return do_load(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX, 16);
+}
+
+static int do_sandbox_ls(cmd_tbl_t *cmdtp, int flag, int argc,
+			   char * const argv[])
+{
+	return do_ls(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
+}
+
+static cmd_tbl_t cmd_sandbox_sub[] = {
+	U_BOOT_CMD_MKENT(load, 3, 0, do_sandbox_load, "", ""),
+	U_BOOT_CMD_MKENT(ls, 3, 0, do_sandbox_ls, "", ""),
+};
+
+static int do_sandbox(cmd_tbl_t *cmdtp, int flag, int argc,
+		      char * const argv[])
+{
+	cmd_tbl_t *c;
+
+	/* Skip past 'sandbox' */
+	argc--;
+	argv++;
+
+	c = find_cmd_tbl(argv[0], cmd_sandbox_sub,
+			 ARRAY_SIZE(cmd_sandbox_sub));
+
+	if (c)
+		return c->cmd(cmdtp, flag, argc, argv);
+	else
+		return CMD_RET_USAGE;
+}
+
+U_BOOT_CMD(
+	sb,	6,	1,	do_sandbox,
+	"Miscellaneous sandbox commands",
+	"load host <addr> <filename> [<bytes> <offset>]  - load a file from host\n"
+	"sb ls host <filename>      - save a file to host"
+);

include/config_cmd_all.h

@@ -76,6 +76,7 @@
 #define CONFIG_CMD_RARP		/* rarpboot support		*/
 #define CONFIG_CMD_READ		/* Read data from partition	*/
 #define CONFIG_CMD_RUN		/* run command in env variable	*/
+#define CONFIG_CMD_SANDBOX	/* sb command to access sandbox features */
 #define CONFIG_CMD_SAVEENV	/* saveenv			*/
 #define CONFIG_CMD_SAVES	/* save S record dump		*/
 #define CONFIG_CMD_SCSI		/* SCSI Support			*/