| /* |
| * 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 |