Release 4.11 arch/arm/mach-shmobile/smp-sh73a0.c
/*
* SMP support for R-Mobile / SH-Mobile - sh73a0 portion
*
* Copyright (C) 2010 Magnus Damm
* Copyright (C) 2010 Takashi Yoshii
*
* 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 of the License.
*
* 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. See the
* GNU General Public License for more details.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <asm/smp_plat.h>
#include <asm/smp_twd.h>
#include "common.h"
#include "sh73a0.h"
#define WUPCR IOMEM(0xe6151010)
#define SRESCR IOMEM(0xe6151018)
#define PSTR IOMEM(0xe6151040)
#define SBAR IOMEM(0xe6180020)
#define APARMBAREA IOMEM(0xe6f10020)
#define SH73A0_SCU_BASE 0xf0000000
static int sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
unsigned int lcpu = cpu_logical_map(cpu);
if (((__raw_readl(PSTR) >> (4 * lcpu)) & 3) == 3)
__raw_writel(1 << lcpu, WUPCR); /* wake up */
else
__raw_writel(1 << lcpu, SRESCR); /* reset */
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Magnus Damm | 62 | 89.86% | 3 | 60.00% |
| Marc Zyngier | 6 | 8.70% | 1 | 20.00% |
| Will Deacon | 1 | 1.45% | 1 | 20.00% |
| Total | 69 | 100.00% | 5 | 100.00% |
static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus)
{
/* Map the reset vector (in headsmp.S) */
__raw_writel(0, APARMBAREA); /* 4k */
__raw_writel(__pa(shmobile_boot_vector), SBAR);
/* setup sh73a0 specific SCU bits */
shmobile_smp_scu_prepare_cpus(SH73A0_SCU_BASE, max_cpus);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Magnus Damm | 32 | 84.21% | 3 | 60.00% |
| Marc Zyngier | 4 | 10.53% | 1 | 20.00% |
| Geert Uytterhoeven | 2 | 5.26% | 1 | 20.00% |
| Total | 38 | 100.00% | 5 | 100.00% |
const struct smp_operations sh73a0_smp_ops __initconst = {
.smp_prepare_cpus = sh73a0_smp_prepare_cpus,
.smp_boot_secondary = sh73a0_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_can_disable = shmobile_smp_cpu_can_disable,
.cpu_die = shmobile_smp_scu_cpu_die,
.cpu_kill = shmobile_smp_scu_cpu_kill,
#endif
};
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Magnus Damm | 134 | 67.68% | 7 | 46.67% |
| Marc Zyngier | 47 | 23.74% | 1 | 6.67% |
| Geert Uytterhoeven | 6 | 3.03% | 2 | 13.33% |
| Rob Herring | 5 | 2.53% | 1 | 6.67% |
| Masahiro Yamada | 2 | 1.01% | 1 | 6.67% |
| Stephen Boyd | 2 | 1.01% | 1 | 6.67% |
| Will Deacon | 1 | 0.51% | 1 | 6.67% |
| Laurent Pinchart | 1 | 0.51% | 1 | 6.67% |
| Total | 198 | 100.00% | 15 | 100.00% |
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