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authorStefan Reinauer <reinauer@chromium.org>2013-06-19 12:25:44 -0700
committerKyösti Mälkki <kyosti.malkki@gmail.com>2013-10-13 12:47:05 +0200
commitfd4f4136e8b6dd6f743b2a3bfd02c735b6b25131 (patch)
treec3669dce606ac492cf6ea0b70aaaa70f0bede3e3 /src/arch/armv7/include
parent8ad6e78778b036cf2c9bc455376a8599e0bcb759 (diff)
Rename cpu/x86/car.h to arch/early_variables.h
and add an ARMv7 version. Change-Id: I14fbff88d7c2b003dde57a19bf0ba9640d322156 Signed-off-by: Stefan Reinauer <reinauer@google.com> [km: rebased fa004acf8 from chromium git] Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/3939 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/arch/armv7/include')
-rw-r--r--src/arch/armv7/include/arch/early_variables.h59
1 files changed, 59 insertions, 0 deletions
diff --git a/src/arch/armv7/include/arch/early_variables.h b/src/arch/armv7/include/arch/early_variables.h
new file mode 100644
index 0000000000..90ead9d44b
--- /dev/null
+++ b/src/arch/armv7/include/arch/early_variables.h
@@ -0,0 +1,59 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved.
+ *
+ * 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
+ */
+
+#ifndef ARCH_EARLY_VARIABLES_H
+#define ARCH_EARLY_VARIABLES_H
+
+#ifdef __PRE_RAM__
+#define CAR_GLOBAL __attribute__((section(".car.global_data,\"w\",%nobits@")))
+#define CAR_CBMEM __attribute__((section(".car.cbmem_console,\"w\",%nobits@")))
+#else
+#define CAR_GLOBAL
+#define CAR_CBMEM
+#endif
+
+#if defined(__PRE_RAM__)
+#define CAR_MIGRATE_ATTR __attribute__ ((used,section (".car.migrate")))
+
+/* Call migrate_fn_() when CAR globals are migrated. */
+#define CAR_MIGRATE(migrate_fn_) \
+ static void (* const migrate_fn_ ## _ptr)(void) CAR_MIGRATE_ATTR = \
+ migrate_fn_;
+
+/* Get the correct pointer for the CAR global variable. */
+void *car_get_var_ptr(void *var);
+
+/* Get and set a primitive type global variable. */
+#define car_get_var(var) \
+ *(typeof(var) *)car_get_var_ptr(&(var))
+#define car_set_var(var, val) \
+ do { car_get_var(var) = (val); } while(0)
+
+/* Migrate the CAR variables to memory. */
+void car_migrate_variables(void);
+
+#else
+#define CAR_MIGRATE(migrate_fn_)
+static inline void *car_get_var_ptr(void *var) { return var; }
+#define car_get_var(var) (var)
+#define car_set_var(var, val) do { (var) = (val); } while (0)
+static inline void car_migrate_variables(void) { }
+#endif
+
+#endif