diff options
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/x86/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/cpu/x86/car.c | 94 |
2 files changed, 0 insertions, 96 deletions
diff --git a/src/cpu/x86/Makefile.inc b/src/cpu/x86/Makefile.inc index 55d1fad7cb..1191069502 100644 --- a/src/cpu/x86/Makefile.inc +++ b/src/cpu/x86/Makefile.inc @@ -1,5 +1,3 @@ -romstage-$(CONFIG_CAR_GLOBAL_MIGRATION) += car.c - subdirs-y += pae subdirs-$(CONFIG_PARALLEL_MP) += name ramstage-$(CONFIG_PARALLEL_MP) += mp_init.c diff --git a/src/cpu/x86/car.c b/src/cpu/x86/car.c deleted file mode 100644 index ef645fc1db..0000000000 --- a/src/cpu/x86/car.c +++ /dev/null @@ -1,94 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * 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. - */ - -#include <string.h> -#include <stddef.h> -#include <console/console.h> -#include <cbmem.h> -#include <arch/early_variables.h> -#include <symbols.h> - -typedef void (* const car_migration_func_t)(void); - -extern car_migration_func_t _car_migrate_start; - -/* - * The car_migrated global variable determines if the cache-as-ram space has - * been migrated to real RAM. It does this by assuming the following things: - * 1. cache-as-ram space is zero'd out once it is set up. - * 2. Either the cache-as-ram space is memory-backed after getting torn down - * or the space returns 0xff's for each byte read. - * Based on these 2 attributes there is the ability to tell when the - * cache-as-ram region has been migrated. - */ -static int car_migrated CAR_GLOBAL; - -/** @brief returns pointer to a CAR variable, before or after migration. - * - * @param var pointer to the CAR variable - */ -void *car_get_var_ptr(void *var) -{ - char *migrated_base = NULL; - int offset; - void *_car_start = _car_global_start; - void *_car_end = _car_global_end; - - /* If the cache-as-ram has not been migrated return the pointer - * passed in. */ - if (!car_migrated) - return var; - - if (var < _car_start || var >= _car_end) { - printk(BIOS_ERR, - "Requesting CAR variable outside of CAR region: %p\n", - var); - return var; - } - - migrated_base = cbmem_find(CBMEM_ID_CAR_GLOBALS); - offset = (char *)var - (char *)_car_start; - - if (migrated_base == NULL) - die("CAR: Could not find migration base!\n"); - - return &migrated_base[offset]; -} - -static void do_car_migrate_variables(void) -{ - void *migrated_base; - size_t car_size = car_data_size(); - - /* Check if already migrated. */ - if (car_migrated) - return; - - migrated_base = cbmem_add(CBMEM_ID_CAR_GLOBALS, car_size); - - if (migrated_base == NULL) { - printk(BIOS_ERR, "Could not migrate CAR data!\n"); - return; - } - - memcpy(migrated_base, _car_global_start, car_size); - - /* Mark that the data has been moved. */ - car_migrated = ~0; -} - -static void car_migrate_variables(int is_recovery) -{ - do_car_migrate_variables(); -} -ROMSTAGE_CBMEM_INIT_HOOK(car_migrate_variables) |