[cmdline] Add "console" command to configure console

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/config/config.c

@@ -278,6 +278,9 @@ REQUIRE_OBJECT ( neighbour_cmd );
 #ifdef PING_CMD
 REQUIRE_OBJECT ( ping_cmd );
 #endif
+#ifdef CONSOLE_CMD
+REQUIRE_OBJECT ( console_cmd );
+#endif
 
 /*
  * Drag in miscellaneous objects

src/config/general.h

@@ -135,6 +135,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
 //#define PARAM_CMD		/* Form parameter commands */
 //#define NEIGHBOUR_CMD		/* Neighbour management commands */
 //#define PING_CMD		/* Ping command */
+//#define CONSOLE_CMD		/* Console command */
 
 /*
  * ROM-specific options

src/hci/commands/console_cmd.c

@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** @file
+ *
+ * Console management commands
+ *
+ */
+
+#include <string.h>
+#include <getopt.h>
+#include <ipxe/command.h>
+#include <ipxe/parseopt.h>
+#include <ipxe/console.h>
+#include <ipxe/image.h>
+#include <ipxe/pixbuf.h>
+#include <usr/imgmgmt.h>
+
+/** "console" options */
+struct console_options {
+	/** Console configuration */
+	struct console_configuration config;
+	/** Picture URI */
+	char *picture;
+	/** Keep picture after configuration */
+	int keep;
+};
+
+/** "console" option list */
+static struct option_descriptor console_opts[] = {
+	OPTION_DESC ( "x", 'x', required_argument,
+		      struct console_options, config.width, parse_integer ),
+	OPTION_DESC ( "y", 'y', required_argument,
+		      struct console_options, config.height, parse_integer ),
+	OPTION_DESC ( "bpp", 'b', required_argument,
+		      struct console_options, config.bpp, parse_integer ),
+	OPTION_DESC ( "picture", 'p', required_argument,
+		      struct console_options, picture, parse_string ),
+	OPTION_DESC ( "keep", 'k', no_argument,
+		      struct console_options, keep, parse_flag ),
+};
+
+/** "console" command descriptor */
+static struct command_descriptor console_cmd =
+	COMMAND_DESC ( struct console_options, console_opts, 0, 0, NULL );
+
+/**
+ * "console" command
+ *
+ * @v argc		Argument count
+ * @v argv		Argument list
+ * @ret rc		Return status code
+ */
+static int console_exec ( int argc, char **argv ) {
+	struct console_options opts;
+	struct image *image = NULL;
+	int rc;
+
+	/* Parse options */
+	if ( ( rc = parse_options ( argc, argv, &console_cmd, &opts ) ) != 0 )
+		goto err_parse;
+
+	/* Handle background picture, if applicable */
+	if ( opts.picture ) {
+
+		/* Acquire image */
+		if ( ( rc = imgacquire ( opts.picture, &image ) ) != 0 )
+			goto err_acquire;
+
+		/* Convert to pixel buffer */
+		if ( ( rc = image_pixbuf ( image, &opts.config.pixbuf ) ) != 0){
+			printf ( "Could not use picture: %s\n",
+				 strerror ( rc ) );
+			goto err_pixbuf;
+		}
+
+		/* Apply image's width and height if none specified */
+		if ( ! opts.config.width )
+			opts.config.width = opts.config.pixbuf->width;
+		if ( ! opts.config.height )
+			opts.config.height = opts.config.pixbuf->height;
+	}
+
+	/* Configure console */
+	if ( ( rc = console_configure ( &opts.config ) ) != 0 ) {
+		printf ( "Could not configure console: %s\n", strerror ( rc ) );
+		goto err_configure;
+	}
+
+ err_configure:
+	pixbuf_put ( opts.config.pixbuf );
+ err_pixbuf:
+	/* Discard image unless --keep was specified */
+	if ( image && ( ! opts.keep ) )
+		unregister_image ( image );
+ err_acquire:
+ err_parse:
+	return rc;
+}
+
+/** Console management commands */
+struct command console_commands[] __command = {
+	{
+		.name = "console",
+		.exec = console_exec,
+	},
+};