sandbox: add concept of sandbox state

The state exists through the life of U-Boot. It can be adjusted by command
line options and perhaps later through a config file.  It is available to
U-Boot through state_...() calls (within sandbox code).

The primary purpose of this is to contain the "hardware" state.  It should
only be used by sandbox internal code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/arch/sandbox/cpu/state.c b/arch/sandbox/cpu/state.c
new file mode 100644
index 0000000..88ae2b0
--- /dev/null
+++ b/arch/sandbox/cpu/state.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2011-2012 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <asm/state.h>
+
+/* Main state record for the sandbox */
+static struct sandbox_state main_state;
+static struct sandbox_state *state;	/* Pointer to current state record */
+
+void state_record_exit(enum exit_type_id exit_type)
+{
+	state->exit_type = exit_type;
+}
+
+struct sandbox_state *state_get_current(void)
+{
+	assert(state);
+	return state;
+}
+
+int state_init(void)
+{
+	state = &main_state;
+
+	/*
+	 * Example of how to use GPIOs:
+	 *
+	 * sandbox_gpio_set_direction(170, 0);
+	 * sandbox_gpio_set_value(170, 0);
+	 */
+	return 0;
+}