Release 4.7 arch/arm/mach-realview/platsmp.c
/*
* linux/arch/arm/mach-realview/platsmp.c
*
* Copyright (C) 2002 ARM Ltd.
* 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 version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/smp.h>
#include <linux/io.h>
#include "hardware.h"
#include <asm/mach-types.h>
#include <asm/smp_scu.h>
#include "board-eb.h"
#include "board-pb11mp.h"
#include "board-pbx.h"
#include <plat/platsmp.h>
#include "core.h"
static void __iomem *scu_base_addr(void)
{
if (machine_is_realview_eb_mp())
return __io_address(REALVIEW_EB11MP_SCU_BASE);
else if (machine_is_realview_pb11mp())
return __io_address(REALVIEW_TC11MP_SCU_BASE);
else if (machine_is_realview_pbx() &&
(core_tile_pbx11mp() || core_tile_pbxa9mp()))
return __io_address(REALVIEW_PBX_TILE_SCU_BASE);
else
return (void __iomem *)0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| catalin marinas | catalin marinas | 34 | 54.84% | 4 | 57.14% |
| colin tuckley | colin tuckley | 20 | 32.26% | 1 | 14.29% |
| russell king | russell king | 8 | 12.90% | 2 | 28.57% |
| Total | 62 | 100.00% | 7 | 100.00% |
/*
* Initialise the CPU possible map early - this describes the CPUs
* which may be present or become present in the system.
*/
static void __init realview_smp_init_cpus(void)
{
void __iomem *scu_base = scu_base_addr();
unsigned int i, ncores;
ncores = scu_base ? scu_get_core_count(scu_base) : 1;
/* sanity check */
if (ncores > nr_cpu_ids) {
pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
ncores, nr_cpu_ids);
ncores = nr_cpu_ids;
}
for (i = 0; i < ncores; i++)
set_cpu_possible(i, true);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| russell king | russell king | 74 | 97.37% | 6 | 85.71% |
| marc zyngier | marc zyngier | 2 | 2.63% | 1 | 14.29% |
| Total | 76 | 100.00% | 7 | 100.00% |
static void __init realview_smp_prepare_cpus(unsigned int max_cpus)
{
scu_enable(scu_base_addr());
/*
* Write the address of secondary startup into the
* system-wide flags register. The BootMonitor waits
* until it receives a soft interrupt, and then the
* secondary CPU branches to this address.
*/
__raw_writel(virt_to_phys(versatile_secondary_startup),
__io_address(REALVIEW_SYS_FLAGSSET));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| russell king | russell king | 26 | 83.87% | 5 | 71.43% |
| catalin marinas | catalin marinas | 3 | 9.68% | 1 | 14.29% |
| marc zyngier | marc zyngier | 2 | 6.45% | 1 | 14.29% |
| Total | 31 | 100.00% | 7 | 100.00% |
const struct smp_operations realview_smp_ops __initconst = {
.smp_init_cpus = realview_smp_init_cpus,
.smp_prepare_cpus = realview_smp_prepare_cpus,
.smp_secondary_init = versatile_secondary_init,
.smp_boot_secondary = versatile_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_die = realview_cpu_die,
#endif
};
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| russell king | russell king | 130 | 52.85% | 12 | 57.14% |
| catalin marinas | catalin marinas | 44 | 17.89% | 5 | 23.81% |
| marc zyngier | marc zyngier | 44 | 17.89% | 1 | 4.76% |
| colin tuckley | colin tuckley | 22 | 8.94% | 1 | 4.76% |
| arnd bergmann | arnd bergmann | 4 | 1.63% | 1 | 4.76% |
| masahiro yamada | masahiro yamada | 2 | 0.81% | 1 | 4.76% |
| Total | 246 | 100.00% | 21 | 100.00% |
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