diff options
author | Stefan Reinauer <reinauer@chromium.org> | 2013-06-19 12:25:44 -0700 |
---|---|---|
committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2013-10-13 12:47:05 +0200 |
commit | fd4f4136e8b6dd6f743b2a3bfd02c735b6b25131 (patch) | |
tree | c3669dce606ac492cf6ea0b70aaaa70f0bede3e3 /src/arch/armv7/include | |
parent | 8ad6e78778b036cf2c9bc455376a8599e0bcb759 (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.h | 59 |
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 |