From fd4f4136e8b6dd6f743b2a3bfd02c735b6b25131 Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Wed, 19 Jun 2013 12:25:44 -0700 Subject: Rename cpu/x86/car.h to arch/early_variables.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit and add an ARMv7 version. Change-Id: I14fbff88d7c2b003dde57a19bf0ba9640d322156 Signed-off-by: Stefan Reinauer [km: rebased fa004acf8 from chromium git] Signed-off-by: Kyösti Mälkki Reviewed-on: http://review.coreboot.org/3939 Reviewed-by: Stefan Reinauer Tested-by: build bot (Jenkins) --- src/arch/x86/include/arch/early_variables.h | 60 +++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 src/arch/x86/include/arch/early_variables.h (limited to 'src/arch/x86/include') diff --git a/src/arch/x86/include/arch/early_variables.h b/src/arch/x86/include/arch/early_variables.h new file mode 100644 index 0000000000..ba7df97059 --- /dev/null +++ b/src/arch/x86/include/arch/early_variables.h @@ -0,0 +1,60 @@ +/* + * 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 -- cgit v1.2.3