arch/*/*/early_variables.h: drop unused files

Kill off NO_GLOBAL_MIGRATION finally!

Change-Id: Ieb7d9f5590b3a7dd1fd5c0ce2e51337332434dbd
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37054
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

7 files changed, 0 insertions, 287 deletions

diff --git a/src/arch/arm/include/arch/early_variables.h b/src/arch/arm/include/arch/early_variables.h
deleted file mode 100644
index 7002a8805e..0000000000
--- a/src/arch/arm/include/arch/early_variables.h
+++ /dev/null
@@ -1,26 +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.
- */
-
-#ifndef ARCH_EARLY_VARIABLES_H
-#define ARCH_EARLY_VARIABLES_H
-
-#define CAR_GLOBAL
-
-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)
-
-#define car_get_ptr car_get_var
-#define car_set_ptr car_set_var
-
-#endif
diff --git a/src/arch/arm64/include/arch/early_variables.h b/src/arch/arm64/include/arch/early_variables.h
deleted file mode 100644
index 7002a8805e..0000000000
--- a/src/arch/arm64/include/arch/early_variables.h
+++ /dev/null
@@ -1,26 +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.
- */
-
-#ifndef ARCH_EARLY_VARIABLES_H
-#define ARCH_EARLY_VARIABLES_H
-
-#define CAR_GLOBAL
-
-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)
-
-#define car_get_ptr car_get_var
-#define car_set_ptr car_set_var
-
-#endif
diff --git a/src/arch/ppc64/include/arch/early_variables.h b/src/arch/ppc64/include/arch/early_variables.h
deleted file mode 100644
index 05b8bc7e48..0000000000
--- a/src/arch/ppc64/include/arch/early_variables.h
+++ /dev/null
@@ -1,27 +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.
- */
-
-#ifndef ARCH_EARLY_VARIABLES_H
-#define ARCH_EARLY_VARIABLES_H
-
-#define CAR_GLOBAL
-
-#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)
-
-#define car_get_ptr car_get_var
-#define car_set_ptr car_set_var
-
-#endif
diff --git a/src/arch/riscv/include/arch/early_variables.h b/src/arch/riscv/include/arch/early_variables.h
deleted file mode 100644
index a2da5f86ee..0000000000
--- a/src/arch/riscv/include/arch/early_variables.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * 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.
- */
-
-#ifndef ARCH_EARLY_VARIABLES_H
-#define ARCH_EARLY_VARIABLES_H
-
-#define CAR_GLOBAL
-
-#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)
-
-#define car_get_ptr car_get_var
-#define car_set_ptr car_set_var
-
-#endif
diff --git a/src/arch/x86/include/arch/early_variables.h b/src/arch/x86/include/arch/early_variables.h
deleted file mode 100644
index 0c4c37b7c9..0000000000
--- a/src/arch/x86/include/arch/early_variables.h
+++ /dev/null
@@ -1,83 +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.
- */
-
-#ifndef ARCH_EARLY_VARIABLES_H
-#define ARCH_EARLY_VARIABLES_H
-
-#include <arch/symbols.h>
-#include <commonlib/helpers.h>
-#include <stdlib.h>
-
-#if ENV_ROMSTAGE && CONFIG(CAR_GLOBAL_MIGRATION)
-
-/*
- * The _car_global_[start|end]symbols cover CAR data which is relocatable
- * once memory comes online. Variables with CAR_GLOBAL decoration
- * reside within this region.
- */
-extern char _car_global_start[];
-extern char _car_global_end[];
-#define _car_global_size (_car_global_end - _car_global_start)
-
-asm(".section .car.global_data,\"w\",@nobits");
-asm(".previous");
-#ifdef __clang__
-#define CAR_GLOBAL __attribute__((used, section(".car.global_data")))
-#else
-#define CAR_GLOBAL __attribute__((used, section(".car.global_data#")))
-#endif /* __clang__ */
-
-/* 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)	car_get_var(var) = (val)
-
-/* Get and set a CAR_GLOBAL pointing elsewhere inside CAR. */
-#define car_get_ptr car_get_var
-#define car_set_ptr car_set_var
-
-static inline size_t car_data_size(void)
-{
-	size_t car_size = _car_global_size;
-	return ALIGN(car_size, 64);
-}
-
-static inline size_t car_object_offset(void *ptr)
-{
-	return (char *)ptr - &_car_global_start[0];
-}
-
-#else
-
-/*
- * For all stages other than romstage, all CAR_GLOBAL variables are accessed
- * unconditionally as there is no migration of symbols.
- */
-
-#define CAR_GLOBAL
-#define car_get_var(var) (var)
-#define car_set_var(var, val)	(var) = (val)
-#define car_get_ptr car_get_var
-#define car_set_ptr car_set_var
-
-static inline void *car_get_var_ptr(void *var)
-{
-	return var;
-}
-
-#endif
-
-#endif /* ARCH_EARLY_VARIABLES_H */
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)