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/*
* Copyright (c) 2017 Richard Braun.
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <kern/init.h>
#include <kern/percpu.h>
#include <machine/cpu.h>
/*
* Processor descriptor, one per CPU.
*/
struct cpu cpu_desc __percpu;
void cpu_halt_broadcast(void)
{
}
void cpu_log_info(const struct cpu *cpu)
{
(void)cpu;
}
void cpu_mp_setup(void)
{
}
static void __init
cpu_init(struct cpu *cpu, unsigned int id)
{
cpu->id = id;
}
static void __init
cpu_set_percpu_area(void *area)
{
#ifdef CONFIG_SMP
cpu_set_tpidrprw((uintptr_t)area);
#else /* CONFIG_SMP */
/* TODO Single-processor support */
cpu_halt();
#endif /* CONFIG_SMP */
}
/*
* Initialize the given cpu structure for the current processor.
*/
static void __init
cpu_init_local(struct cpu *cpu)
{
cpu_set_percpu_area(percpu_area(cpu->id));
}
static int __init
cpu_setup(void)
{
struct cpu *cpu;
cpu = percpu_ptr(cpu_desc, 0);
cpu_init(cpu, 0);
cpu_init_local(cpu);
/* TODO Provide cpu_delay() */
return 0;
}
INIT_OP_DEFINE(cpu_setup,
INIT_OP_DEP(percpu_bootstrap, true));
static int __init
cpu_mp_probe(void)
{
return 0;
}
INIT_OP_DEFINE(cpu_mp_probe);
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