arm64: Remove SMP support

As ARM Trusted Firmware is the only first class citizen for
booting arm64 multi-processor in coreboot remove SMP
support. If SoCs want to bring up MP then ATF needs to be
ported and integrated.

Change-Id: Ife24d53eed9b7a5a5d8c69a64d7a20a55a4163db
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: http://review.coreboot.org/11909
Tested-by: build bot (Jenkins)
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 0 insertions, 224 deletions

diff --git a/src/arch/arm64/cpu.c b/src/arch/arm64/cpu.c
deleted file mode 100644
index 1501181364..0000000000
--- a/src/arch/arm64/cpu.c
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2013 Google Inc.
- *
- * 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 <stdint.h>
-#include <stdlib.h>
-#include <arch/lib_helpers.h>
-#include <cpu/cpu.h>
-#include <console/console.h>
-#include <smp/node.h>
-#include "cpu-internal.h"
-
-struct cpu_info cpu_infos[CONFIG_MAX_CPUS];
-struct cpu_info *bsp_cpu_info;
-
-struct cpu_info *cpu_info(void)
-{
-	return cpu_info_for_cpu(smp_processor_id());
-}
-
-size_t cpus_online(void)
-{
-	int i;
-	size_t num = 0;
-
-	for (i = 0; i < ARRAY_SIZE(cpu_infos); i++) {
-		if (cpu_online(cpu_info_for_cpu(i)))
-			num++;
-	}
-
-	return num;
-}
-
-static inline int action_queue_empty(struct cpu_action_queue *q)
-{
-	return load_acquire_exclusive(&q->todo) == NULL;
-}
-
-static inline int action_completed(struct cpu_action_queue *q,
-					struct cpu_action *action)
-{
-	return load_acquire(&q->completed) == action;
-}
-
-static inline void wait_for_action_queue_slot(struct cpu_action_queue *q)
-{
-	while (!action_queue_empty(q))
-		wfe();
-}
-
-static void wait_for_action_complete(struct cpu_action_queue *q,
-					struct cpu_action *a)
-{
-	while (!action_completed(q, a))
-		wfe();
-}
-
-static struct cpu_action *wait_for_action(struct cpu_action_queue *q,
-						struct cpu_action *local)
-{
-	struct cpu_action *action;
-
-	while (action_queue_empty(q))
-		wfe();
-
-	/*
-	 * Keep original address, but use a local copy for async processing.
-	 */
-	do {
-		action = load_acquire_exclusive(&q->todo);
-		*local = *action;
-	} while (!store_release_exclusive(&q->todo, NULL));
-
-	return action;
-}
-
-static void queue_action(struct cpu_action_queue *q, struct cpu_action *action)
-{
-	do {
-		wait_for_action_queue_slot(q);
-		if (load_acquire_exclusive(&q->todo) != NULL)
-			continue;
-	} while (!store_release_exclusive(&q->todo, action));
-}
-
-static void action_queue_complete(struct cpu_action_queue *q,
-					struct cpu_action *action)
-{
-	/* Mark completion and send events to waiters. */
-	store_release(&q->completed, action);
-	sev();
-}
-
-static void action_run(struct cpu_action *action)
-{
-	action->run(action->arg);
-}
-
-static void action_run_on_cpu(struct cpu_info *ci, struct cpu_action *action,
-				int sync)
-{
-	struct cpu_action_queue *q = &ci->action_queue;
-
-	/* Don't run actions on non-online cpus. */
-	if (!cpu_online(ci))
-		return;
-
-	if (ci->id == smp_processor_id()) {
-		action->run(action->arg);
-		return;
-	}
-
-	queue_action(q, action);
-	/* Wait for CPU to pick it up. Empty slot means it was picked up. */
-	wait_for_action_queue_slot(q);
-	/* Wait for completion if requested. */
-	if (sync)
-		wait_for_action_complete(q, action);
-}
-
-static int __arch_run_on_cpu(unsigned int cpu, struct cpu_action *action,
-				int sync)
-{
-	struct cpu_info *ci;
-
-	if (cpu >= CONFIG_MAX_CPUS)
-		return -1;
-
-	ci = cpu_info_for_cpu(cpu);
-
-	action_run_on_cpu(ci, action, sync);
-
-	return 0;
-}
-
-int arch_run_on_cpu(unsigned int cpu, struct cpu_action *action)
-{
-	return __arch_run_on_cpu(cpu, action, 1);
-}
-
-int arch_run_on_cpu_async(unsigned int cpu, struct cpu_action *action)
-{
-	return __arch_run_on_cpu(cpu, action, 0);
-}
-
-static int __arch_run_on_all_cpus(struct cpu_action *action, int sync)
-{
-	int i;
-
-	for (i = 0; i < CONFIG_MAX_CPUS; i++)
-		action_run_on_cpu(cpu_info_for_cpu(i), action, sync);
-
-	return 0;
-}
-
-static int __arch_run_on_all_cpus_but_self(struct cpu_action *action, int sync)
-{
-	int i;
-	struct cpu_info *me = cpu_info();
-
-	for (i = 0; i < CONFIG_MAX_CPUS; i++) {
-		struct cpu_info *ci = cpu_info_for_cpu(i);
-		if (ci == me)
-			continue;
-		action_run_on_cpu(ci, action, sync);
-	}
-
-	return 0;
-}
-
-int arch_run_on_all_cpus(struct cpu_action *action)
-{
-	return __arch_run_on_all_cpus(action, 1);
-}
-
-int arch_run_on_all_cpus_async(struct cpu_action *action)
-{
-	return __arch_run_on_all_cpus(action, 0);
-}
-
-int arch_run_on_all_cpus_but_self(struct cpu_action *action)
-{
-	return __arch_run_on_all_cpus_but_self(action, 1);
-}
-
-int arch_run_on_all_cpus_but_self_async(struct cpu_action *action)
-{
-	return __arch_run_on_all_cpus_but_self(action, 0);
-}
-
-
-void arch_cpu_wait_for_action(void)
-{
-	struct cpu_info *ci = cpu_info();
-	struct cpu_action_queue *q = &ci->action_queue;
-
-	while (1) {
-		struct cpu_action *orig;
-		struct cpu_action action;
-
-		orig = wait_for_action(q, &action);
-
-		action_run(&action);
-		action_queue_complete(q, orig);
-	}
-}
-
-#if IS_ENABLED(CONFIG_SMP)
-int boot_cpu(void)
-{
-	return cpu_is_bsp();
-}
-#endif