mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
63fc1370c1
With commit a0ae0240 (ARM: kernel: add device tree init map function),
the cpu id value may include the cluster id and is no longer 0-3, so we
need to mask it now to get the right hard cpu index.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
/*
|
|
* Copyright 2011 Calxeda, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope 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/>.
|
|
*/
|
|
#ifndef _MACH_HIGHBANK__SYSREGS_H_
|
|
#define _MACH_HIGHBANK__SYSREGS_H_
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/smp.h>
|
|
#include <asm/smp_plat.h>
|
|
#include <asm/smp_scu.h>
|
|
#include "core.h"
|
|
|
|
extern void __iomem *sregs_base;
|
|
|
|
#define HB_SREG_A9_PWR_REQ 0xf00
|
|
#define HB_SREG_A9_BOOT_STAT 0xf04
|
|
#define HB_SREG_A9_BOOT_DATA 0xf08
|
|
|
|
#define HB_PWR_SUSPEND 0
|
|
#define HB_PWR_SOFT_RESET 1
|
|
#define HB_PWR_HARD_RESET 2
|
|
#define HB_PWR_SHUTDOWN 3
|
|
|
|
#define SREG_CPU_PWR_CTRL(c) (0x200 + ((c) * 4))
|
|
|
|
static inline void highbank_set_core_pwr(void)
|
|
{
|
|
int cpu = MPIDR_AFFINITY_LEVEL(cpu_logical_map(smp_processor_id()), 0);
|
|
if (scu_base_addr)
|
|
scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
|
|
else
|
|
writel_relaxed(1, sregs_base + SREG_CPU_PWR_CTRL(cpu));
|
|
}
|
|
|
|
static inline void highbank_clear_core_pwr(void)
|
|
{
|
|
int cpu = MPIDR_AFFINITY_LEVEL(cpu_logical_map(smp_processor_id()), 0);
|
|
if (scu_base_addr)
|
|
scu_power_mode(scu_base_addr, SCU_PM_NORMAL);
|
|
else
|
|
writel_relaxed(0, sregs_base + SREG_CPU_PWR_CTRL(cpu));
|
|
}
|
|
|
|
static inline void highbank_set_pwr_suspend(void)
|
|
{
|
|
writel(HB_PWR_SUSPEND, sregs_base + HB_SREG_A9_PWR_REQ);
|
|
highbank_set_core_pwr();
|
|
}
|
|
|
|
static inline void highbank_set_pwr_shutdown(void)
|
|
{
|
|
writel(HB_PWR_SHUTDOWN, sregs_base + HB_SREG_A9_PWR_REQ);
|
|
highbank_set_core_pwr();
|
|
}
|
|
|
|
static inline void highbank_set_pwr_soft_reset(void)
|
|
{
|
|
writel(HB_PWR_SOFT_RESET, sregs_base + HB_SREG_A9_PWR_REQ);
|
|
highbank_set_core_pwr();
|
|
}
|
|
|
|
static inline void highbank_set_pwr_hard_reset(void)
|
|
{
|
|
writel(HB_PWR_HARD_RESET, sregs_base + HB_SREG_A9_PWR_REQ);
|
|
highbank_set_core_pwr();
|
|
}
|
|
|
|
static inline void highbank_clear_pwr_request(void)
|
|
{
|
|
writel(~0UL, sregs_base + HB_SREG_A9_PWR_REQ);
|
|
highbank_clear_core_pwr();
|
|
}
|
|
|
|
#endif
|