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authorVladimir Serbinenko <phcoder@gmail.com>2015-05-16 16:32:45 +0200
committerVladimir Serbinenko <phcoder@gmail.com>2015-05-19 16:22:56 +0200
commit4679c41db292b80ce51c7d923e2f22258145522b (patch)
tree6c962e99e05bbf46cc82cd92208d8644bb3a53aa /Documentation
parenta5dc9f1be86ad419a07b95640addf871a3c03ec6 (diff)
downloadcoreboot-4679c41db292b80ce51c7d923e2f22258145522b.tar.xz
Move smi trap sample to documentation, don't keep it in every mobo.
Sample code belongs to documentation, not copied 100x over prodcution code. Change-Id: I6bb318d76057d02bd6ac5641d12d56ab6d60b745 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/10229 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/mainboard_io_trap_handler_sample.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/Documentation/mainboard_io_trap_handler_sample.c b/Documentation/mainboard_io_trap_handler_sample.c
new file mode 100644
index 0000000000..01fdfdc98b
--- /dev/null
+++ b/Documentation/mainboard_io_trap_handler_sample.c
@@ -0,0 +1,55 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright 2013 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; version 2 of the License.
+ *
+ * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/io.h>
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <soc/pm.h>
+#include <soc/smm.h>
+#include <elog.h>
+#include <ec/google/chromeec/ec.h>
+#include <soc/gpio.h>
+#include <soc/iomap.h>
+#include <soc/nvs.h>
+#include <soc/pm.h>
+#include <soc/smm.h>
+#include "ec.h"
+#include "gpio.h"
+
+int mainboard_io_trap_handler(int smif)
+{
+ switch (smif) {
+ case 0x99:
+ printk(BIOS_DEBUG, "Sample\n");
+ smm_get_gnvs()->smif = 0;
+ break;
+ default:
+ return 0;
+ }
+
+ /* On success, the IO Trap Handler returns 0
+ * On failure, the IO Trap Handler returns a value != 0
+ *
+ * For now, we force the return value to 0 and log all traps to
+ * see what's going on.
+ */
+ //smm_get_gnvs()->smif = 0;
+ return 1;
+}