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)

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

src/arch/x86/include/arch/early_variables.h

@@ -17,8 +17,8 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
  */
 
-#ifndef CPU_X86_CAR_H
+#ifndef ARCH_EARLY_VARIABLES_H
-#define CPU_X86_CAR_H
+#define ARCH_EARLY_VARIABLES_H
 
 #ifdef __PRE_RAM__
 #define CAR_GLOBAL __attribute__((section(".car.global_data,\"w\",@nobits#")))

src/cpu/x86/car.c

@@ -21,7 +21,7 @@
 #include <stddef.h>
 #include <console/console.h>
 #include <cbmem.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 
 typedef void (* const car_migration_func_t)(void);
 

src/cpu/x86/lapic/apic_timer.c

@@ -24,7 +24,7 @@
 #include <thread.h>
 #include <arch/io.h>
 #include <arch/cpu.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/lapic.h>
 #include <cpu/intel/speedstep.h>

src/drivers/oxford/oxpcie/oxpcie_early.c

@@ -19,7 +19,7 @@
 
 #include <stdint.h>
 #include <arch/io.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 #include <delay.h>
 #include <uart8250.h>
 #include <device/pci_def.h>

src/drivers/pc80/tpm.c

@@ -34,7 +34,7 @@
 #include <arch/byteorder.h>
 #include <console/console.h>
 #include <pc80/tpm.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 
 #define PREFIX "lpc_tpm: "
 

src/lib/cbmem.c

@@ -23,7 +23,7 @@
 #include <cbmem.h>
 #include <boot/coreboot_tables.h>
 #include <console/console.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 #if CONFIG_HAVE_ACPI_RESUME && !defined(__PRE_RAM__)
 #include <arch/acpi.h>
 #endif

src/lib/cbmem_console.c

@@ -19,7 +19,7 @@
 
 #include <console/console.h>
 #include <cbmem.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 #include <string.h>
 
 /*

src/lib/dynamic_cbmem.c

@@ -23,7 +23,7 @@
 #include <cbmem.h>
 #include <string.h>
 #include <stdlib.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 #if CONFIG_HAVE_ACPI_RESUME && !defined(__PRE_RAM__)
 #include <arch/acpi.h>
 #endif

src/lib/timestamp.c

@@ -22,7 +22,7 @@
 #include <console/console.h>
 #include <cbmem.h>
 #include <timestamp.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 #include <cpu/x86/lapic.h>
 
 #define MAX_TIMESTAMPS 30

src/lib/usbdebug.c

@@ -24,7 +24,7 @@
 #include <device/pci.h>
 #include <device/pci_def.h>
 #include <arch/byteorder.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 #include <string.h>
 #include <cbmem.h>
 

src/northbridge/amd/amdfam10/raminit_amdmct.c

@@ -120,7 +120,7 @@ static  void print_t(const char *strval)
 
 #endif	/* DDR2 */
 
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 struct sys_info sysinfo_car CAR_GLOBAL;
 
 int mctRead_SPD(u32 smaddr, u32 reg)

src/northbridge/amd/amdk8/raminit.c

@@ -14,7 +14,7 @@
 #include "option_table.h"
 #endif
 
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 struct sys_info sysinfo_car CAR_GLOBAL;
 
 #if (CONFIG_RAMTOP & (CONFIG_RAMTOP -1)) != 0

src/northbridge/amd/amdk8/raminit_f.c

@@ -39,7 +39,7 @@
 #endif
 
 
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 struct sys_info sysinfo_car CAR_GLOBAL;
 
 #if (CONFIG_RAMTOP & (CONFIG_RAMTOP -1)) != 0

src/vendorcode/google/chromeos/vbnv.c

@@ -21,7 +21,7 @@
 #include <string.h>
 #include <console/console.h>
 #include <pc80/mc146818rtc.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 #include "chromeos.h"
 
 #define VBNV_BLOCK_SIZE 16	/* Size of NV storage block in bytes */