mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-29 20:06:38 +07:00
bda0f5bad8
This change improves and cleans up the tile console. - We enable HVC_IRQ support on tilegx, with the addition of a new Tilera hypervisor API for tilegx to allow a console IPI. If IPI support is not available we fall back to the previous polling mode. - We simplify the earlyprintk code to use CON_BOOT and eliminate some of the other supporting earlyprintk code. - A new tile_console_write() primitive is used to send output to the console and is factored out of the hvc_tile driver. This lets us support a "sim_console" boot argument to allow using simulator hooks to send output to the "console" as a slightly faster alternative to emulating the hardware more directly. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/*
|
|
* Copyright 2010 Tilera Corporation. 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.
|
|
*
|
|
* 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, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
#include <linux/stddef.h>
|
|
#include <linux/reboot.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/export.h>
|
|
#include <asm/page.h>
|
|
#include <asm/setup.h>
|
|
#include <hv/hypervisor.h>
|
|
|
|
#ifndef CONFIG_SMP
|
|
#define smp_send_stop()
|
|
#endif
|
|
|
|
void machine_halt(void)
|
|
{
|
|
arch_local_irq_disable_all();
|
|
smp_send_stop();
|
|
hv_halt();
|
|
}
|
|
|
|
void machine_power_off(void)
|
|
{
|
|
arch_local_irq_disable_all();
|
|
smp_send_stop();
|
|
hv_power_off();
|
|
}
|
|
|
|
void machine_restart(char *cmd)
|
|
{
|
|
arch_local_irq_disable_all();
|
|
smp_send_stop();
|
|
hv_restart((HV_VirtAddr) "vmlinux", (HV_VirtAddr) cmd);
|
|
}
|
|
|
|
/* No interesting distinction to be made here. */
|
|
void (*pm_power_off)(void) = NULL;
|
|
EXPORT_SYMBOL(pm_power_off);
|