--- zzzz-none-000/linux-3.10.107/arch/arm/mach-shmobile/smp-sh73a0.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/arm/mach-shmobile/smp-sh73a0.c	2021-02-04 17:41:59.000000000 +0000
@@ -12,118 +12,56 @@
  * 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/smp.h>
-#include <linux/spinlock.h>
 #include <linux/io.h>
 #include <linux/delay.h>
-#include <mach/common.h>
-#include <asm/cacheflush.h>
+
 #include <asm/smp_plat.h>
-#include <mach/sh73a0.h>
-#include <asm/smp_scu.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 PSTR_SHUTDOWN_MODE	3
-
 #define SH73A0_SCU_BASE 0xf0000000
 
-#ifdef CONFIG_HAVE_ARM_TWD
-static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, SH73A0_SCU_BASE + 0x600, 29);
-void __init sh73a0_register_twd(void)
-{
-	twd_local_timer_register(&twd_local_timer);
-}
-#endif
-
-static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle)
+static int sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
-	cpu = cpu_logical_map(cpu);
+	unsigned int lcpu = cpu_logical_map(cpu);
 
-	if (((__raw_readl(PSTR) >> (4 * cpu)) & 3) == 3)
-		__raw_writel(1 << cpu, WUPCR);	/* wake up */
+	if (((__raw_readl(PSTR) >> (4 * lcpu)) & 3) == 3)
+		__raw_writel(1 << lcpu, WUPCR);	/* wake up */
 	else
-		__raw_writel(1 << cpu, SRESCR);	/* reset */
+		__raw_writel(1 << lcpu, SRESCR);	/* reset */
 
 	return 0;
 }
 
 static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus)
 {
-	scu_enable(shmobile_scu_base);
-
-	/* Map the reset vector (in headsmp-scu.S) */
+	/* Map the reset vector (in headsmp.S) */
 	__raw_writel(0, APARMBAREA);      /* 4k */
-	__raw_writel(__pa(shmobile_secondary_vector_scu), SBAR);
-
-	/* enable cache coherency on booting CPU */
-	scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL);
-}
+	__raw_writel(__pa(shmobile_boot_vector), SBAR);
 
-static void __init sh73a0_smp_init_cpus(void)
-{
-	/* setup sh73a0 specific SCU base */
+	/* setup sh73a0 specific SCU bits */
 	shmobile_scu_base = IOMEM(SH73A0_SCU_BASE);
-
-	shmobile_smp_init_cpus(scu_get_core_count(shmobile_scu_base));
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-static int sh73a0_cpu_kill(unsigned int cpu)
-{
-
-	int k;
-	u32 pstr;
-
-	/*
-	 * wait until the power status register confirms the shutdown of the
-	 * offline target
-	 */
-	for (k = 0; k < 1000; k++) {
-		pstr = (__raw_readl(PSTR) >> (4 * cpu)) & 3;
-		if (pstr == PSTR_SHUTDOWN_MODE)
-			return 1;
-
-		mdelay(1);
-	}
-
-	return 0;
-}
-
-static void sh73a0_cpu_die(unsigned int cpu)
-{
-	/* Set power off mode. This takes the CPU out of the MP cluster */
-	scu_power_mode(shmobile_scu_base, SCU_PM_POWEROFF);
-
-	/* Enter shutdown mode */
-	cpu_do_idle();
-}
-
-static int sh73a0_cpu_disable(unsigned int cpu)
-{
-	return 0; /* CPU0 and CPU1 supported */
+	shmobile_smp_scu_prepare_cpus(max_cpus);
 }
-#endif /* CONFIG_HOTPLUG_CPU */
 
 struct smp_operations sh73a0_smp_ops __initdata = {
-	.smp_init_cpus		= sh73a0_smp_init_cpus,
 	.smp_prepare_cpus	= sh73a0_smp_prepare_cpus,
 	.smp_boot_secondary	= sh73a0_boot_secondary,
 #ifdef CONFIG_HOTPLUG_CPU
-	.cpu_kill		= sh73a0_cpu_kill,
-	.cpu_die		= sh73a0_cpu_die,
-	.cpu_disable		= sh73a0_cpu_disable,
+	.cpu_can_disable	= shmobile_smp_cpu_can_disable,
+	.cpu_die		= shmobile_smp_scu_cpu_die,
+	.cpu_kill		= shmobile_smp_scu_cpu_kill,
 #endif
 };