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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 <stdio.h>
#include <kern/init.h>
#include <kern/plist.h>
#include <kern/shell.h>
#include <kern/shutdown.h>
#include <machine/boot.h>
#include <machine/cpu.h>
static struct plist shutdown_ops_list;
#ifdef CONFIG_SHELL
static void
shutdown_shell_halt(int argc, char **argv)
{
(void)argc;
(void)argv;
shutdown_halt();
}
static void
shutdown_shell_reboot(int argc, char **argv)
{
(void)argc;
(void)argv;
shutdown_reboot();
}
static struct shell_cmd shutdown_shell_cmds[] = {
SHELL_CMD_INITIALIZER("shutdown_halt", shutdown_shell_halt,
"shutdown_halt",
"halt the system"),
SHELL_CMD_INITIALIZER("shutdown_reboot", shutdown_shell_reboot,
"shutdown_reboot",
"reboot the system"),
};
static int __init
shutdown_setup_shell(void)
{
SHELL_REGISTER_CMDS(shutdown_shell_cmds);
return 0;
}
INIT_OP_DEFINE(shutdown_setup_shell,
INIT_OP_DEP(shell_setup, true),
INIT_OP_DEP(shutdown_setup, true));
#endif /* CONFIG_SHELL */
static int __init
shutdown_bootstrap(void)
{
plist_init(&shutdown_ops_list);
return 0;
}
INIT_OP_DEFINE(shutdown_bootstrap);
static int __init
shutdown_setup(void)
{
return 0;
}
INIT_OP_DEFINE(shutdown_setup,
INIT_OP_DEP(boot_setup_shutdown, true),
INIT_OP_DEP(cpu_setup, true),
INIT_OP_DEP(printf_setup, true),
INIT_OP_DEP(shutdown_bootstrap, true));
void __init
shutdown_register(struct shutdown_ops *ops, unsigned int priority)
{
plist_node_init(&ops->node, priority);
plist_add(&shutdown_ops_list, &ops->node);
}
static void
shutdown_halt_other_cpus(void)
{
cpu_intr_disable();
cpu_halt_broadcast();
}
void
shutdown_halt(void)
{
shutdown_halt_other_cpus();
printf("shutdown: system halted\n");
cpu_halt();
}
void
shutdown_reboot(void)
{
struct shutdown_ops *ops;
if (plist_empty(&shutdown_ops_list)) {
printf("shutdown: no reset operation available, halting\n");
shutdown_halt();
}
shutdown_halt_other_cpus();
printf("shutdown: rebooting...\n");
plist_for_each_entry_reverse(&shutdown_ops_list, ops, node) {
ops->reset();
}
cpu_halt();
}
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