mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 02:54:32 +08:00
c0114709ed
All the calls to gic_secondary_init() pass 0 as the first argument. Since this function is called on each CPU when starting, it can be done in a platform-independent way via a CPU notifier registered by the GIC code. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Simon Horman <horms+renesas@verge.net.au> Tested-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Tested-by: Dinh Nguyen <dinguyen@altera.com> Acked-by: Nicolas Pitre <nico@linaro.org> Tested-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: David Brown <davidb@codeaurora.org> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Shiraz Hashim <shiraz.hashim@st.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Barry Song <baohua.song@csr.com>
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
|
|
* Copyright 2010-2011 Calxeda, Inc.
|
|
* Based on platsmp.c, Copyright (C) 2002 ARM Ltd.
|
|
*
|
|
* 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/>.
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <asm/smp_scu.h>
|
|
|
|
#include "core.h"
|
|
|
|
extern void secondary_startup(void);
|
|
|
|
static int __cpuinit highbank_boot_secondary(unsigned int cpu, struct task_struct *idle)
|
|
{
|
|
highbank_set_cpu_jump(cpu, secondary_startup);
|
|
arch_send_wakeup_ipi_mask(cpumask_of(cpu));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Initialise the CPU possible map early - this describes the CPUs
|
|
* which may be present or become present in the system.
|
|
*/
|
|
static void __init highbank_smp_init_cpus(void)
|
|
{
|
|
unsigned int i, ncores = 4;
|
|
|
|
/* sanity check */
|
|
if (ncores > NR_CPUS) {
|
|
printk(KERN_WARNING
|
|
"highbank: no. of cores (%d) greater than configured "
|
|
"maximum of %d - clipping\n",
|
|
ncores, NR_CPUS);
|
|
ncores = NR_CPUS;
|
|
}
|
|
|
|
for (i = 0; i < ncores; i++)
|
|
set_cpu_possible(i, true);
|
|
}
|
|
|
|
static void __init highbank_smp_prepare_cpus(unsigned int max_cpus)
|
|
{
|
|
if (scu_base_addr)
|
|
scu_enable(scu_base_addr);
|
|
}
|
|
|
|
struct smp_operations highbank_smp_ops __initdata = {
|
|
.smp_init_cpus = highbank_smp_init_cpus,
|
|
.smp_prepare_cpus = highbank_smp_prepare_cpus,
|
|
.smp_boot_secondary = highbank_boot_secondary,
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
.cpu_die = highbank_cpu_die,
|
|
#endif
|
|
};
|