Merge tag 'v3.14.25' into backport/v3.14.24-ltsi-rc1+v3.14.25/snapshot-merge.wip

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / arm / mach-shmobile / smp-r8a7791.c

diff --git a/arch/arm/mach-shmobile/smp-r8a7791.c b/arch/arm/mach-shmobile/smp-r8a7791.c
index 2df5bd1..f743386 100644 (file)
--- a/arch/arm/mach-shmobile/smp-r8a7791.c
+++ b/arch/arm/mach-shmobile/smp-r8a7791.c
@@ -17,43 +17,36 @@
 #include <linux/init.h>
 #include <linux/smp.h>
 #include <linux/io.h>
+
 #include <asm/smp_plat.h>
-#include <mach/common.h>
-#include <mach/r8a7791.h>
 
-#define RST            0xe6160000
-#define CA15BAR                0x0020
-#define CA15RESCNT     0x0040
-#define RAM            0xe6300000
+#include "common.h"
+#include "r8a7791.h"
+#include "rcar-gen2.h"
 
 static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
 {
-       void __iomem *p;
-       u32 bar;
-
        /* let APMU code install data related to shmobile_boot_vector */
        shmobile_smp_apmu_prepare_cpus(max_cpus);
 
-       /* RAM for jump stub, because BAR requires 256KB aligned address */
-       p = ioremap_nocache(RAM, shmobile_boot_size);
-       memcpy_toio(p, shmobile_boot_vector, shmobile_boot_size);
-       iounmap(p);
+       r8a7791_pm_init();
+}
 
-       /* setup reset vectors */
-       p = ioremap_nocache(RST, 0x63);
-       bar = (RAM >> 8) & 0xfffffc00;
-       writel_relaxed(bar, p + CA15BAR);
-       writel_relaxed(bar | 0x10, p + CA15BAR);
+static int r8a7791_smp_boot_secondary(unsigned int cpu,
+                                     struct task_struct *idle)
+{
+       /* Error out when hardware debug mode is enabled */
+       if (rcar_gen2_read_mode_pins() & BIT(21)) {
+               pr_warn("Unable to boot CPU%u when MD21 is set\n", cpu);
+               return -ENOTSUPP;
+       }
 
-       /* enable clocks to all CPUs */
-       writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000,
-                      p + CA15RESCNT);
-       iounmap(p);
+       return shmobile_smp_apmu_boot_secondary(cpu, idle);
 }
 
 struct smp_operations r8a7791_smp_ops __initdata = {
        .smp_prepare_cpus       = r8a7791_smp_prepare_cpus,
-       .smp_boot_secondary     = shmobile_smp_apmu_boot_secondary,
+       .smp_boot_secondary     = r8a7791_smp_boot_secondary,
 #ifdef CONFIG_HOTPLUG_CPU
        .cpu_disable            = shmobile_smp_cpu_disable,
        .cpu_die                = shmobile_smp_apmu_cpu_die,