mirror of https://gitee.com/openkylin/linux.git
103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/*
|
|
* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
|
|
* reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the NetLogic
|
|
* license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
|
|
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
|
|
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/threads.h>
|
|
|
|
#include <asm/asm.h>
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm/mipsregs.h>
|
|
#include <asm/addrspace.h>
|
|
#include <asm/string.h>
|
|
|
|
#include <asm/netlogic/haldefs.h>
|
|
#include <asm/netlogic/common.h>
|
|
#include <asm/netlogic/mips-extns.h>
|
|
|
|
#include <asm/netlogic/xlp-hal/iomap.h>
|
|
#include <asm/netlogic/xlp-hal/pic.h>
|
|
#include <asm/netlogic/xlp-hal/xlp.h>
|
|
#include <asm/netlogic/xlp-hal/sys.h>
|
|
|
|
static void xlp_enable_secondary_cores(void)
|
|
{
|
|
uint32_t core, value, coremask, syscoremask;
|
|
int count;
|
|
|
|
/* read cores in reset from SYS block */
|
|
syscoremask = nlm_read_sys_reg(nlm_sys_base, SYS_CPU_RESET);
|
|
|
|
/* update user specified */
|
|
nlm_coremask = nlm_coremask & (syscoremask | 1);
|
|
|
|
for (core = 1; core < 8; core++) {
|
|
coremask = 1 << core;
|
|
if ((nlm_coremask & coremask) == 0)
|
|
continue;
|
|
|
|
/* Enable CPU clock */
|
|
value = nlm_read_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIS_CTRL);
|
|
value &= ~coremask;
|
|
nlm_write_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIS_CTRL, value);
|
|
|
|
/* Remove CPU Reset */
|
|
value = nlm_read_sys_reg(nlm_sys_base, SYS_CPU_RESET);
|
|
value &= ~coremask;
|
|
nlm_write_sys_reg(nlm_sys_base, SYS_CPU_RESET, value);
|
|
|
|
/* Poll for CPU to mark itself coherent */
|
|
count = 100000;
|
|
do {
|
|
value = nlm_read_sys_reg(nlm_sys_base,
|
|
SYS_CPU_NONCOHERENT_MODE);
|
|
} while ((value & coremask) != 0 && count-- > 0);
|
|
|
|
if (count == 0)
|
|
pr_err("Failed to enable core %d\n", core);
|
|
}
|
|
}
|
|
|
|
void xlp_wakeup_secondary_cpus(void)
|
|
{
|
|
/*
|
|
* In case of u-boot, the secondaries are in reset
|
|
* first wakeup core 0 threads
|
|
*/
|
|
xlp_boot_core0_siblings();
|
|
|
|
/* now get other cores out of reset */
|
|
xlp_enable_secondary_cores();
|
|
}
|