ARM: mvebu: move Armada XP specific SMP initialization to platsmp.c

The pmsu.c driver contained an armada_xp_boot_cpu() function that sets
the boot address of a secondary CPUs and deasserts the reset. However,
the Armada 375 needs a slightly different logic, so it makes more
sense to move this code into the Armada XP specific platsmp.c.

In order to achieve this, the mvebu_pmsu_set_cpu_boot_addr() function
is exported. It will be needed for both the Armada XP and Armada 38x
SMP implementations.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397483648-26611-2-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/mach-mvebu/common.h

@@ -19,6 +19,7 @@
 
 void mvebu_restart(enum reboot_mode mode, const char *cmd);
 int mvebu_cpu_reset_deassert(int cpu);
+void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr);
 
 void armada_xp_cpu_die(unsigned int cpu);
 

arch/arm/mach-mvebu/platsmp.c

@@ -77,9 +77,17 @@ static void armada_xp_secondary_init(unsigned int cpu)
 
 static int armada_xp_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
+	int ret, hw_cpu;
+
 	pr_info("Booting CPU %d\n", cpu);
 
-	armada_xp_boot_cpu(cpu, armada_xp_secondary_startup);
+	hw_cpu = cpu_logical_map(cpu);
+	mvebu_pmsu_set_cpu_boot_addr(hw_cpu, armada_xp_secondary_startup);
+	ret = mvebu_cpu_reset_deassert(hw_cpu);
+	if (ret) {
+		pr_warn("unable to boot CPU: %d\n", ret);
+		return ret;
+	}
 
 	return 0;
 }

arch/arm/mach-mvebu/pmsu.c

@@ -41,36 +41,12 @@ static struct of_device_id of_pmsu_table[] = {
 	{ /* end of list */ },
 };
 
-static void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr)
+void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr)
 {
 	writel(virt_to_phys(boot_addr), pmsu_mp_base +
 		PMSU_BOOT_ADDR_REDIRECT_OFFSET(hw_cpu));
 }
 
-#ifdef CONFIG_SMP
-int armada_xp_boot_cpu(unsigned int cpu_id, void *boot_addr)
-{
-	int hw_cpu, ret;
-
-	if (!pmsu_mp_base) {
-		pr_warn("Can't boot CPU. PMSU is uninitialized\n");
-		return -ENODEV;
-	}
-
-	hw_cpu = cpu_logical_map(cpu_id);
-
-	mvebu_pmsu_set_cpu_boot_addr(hw_cpu, boot_addr);
-
-	ret = mvebu_cpu_reset_deassert(hw_cpu);
-	if (ret) {
-		pr_warn("unable to boot CPU: %d\n", ret);
-		return ret;
-	}
-
-	return 0;
-}
-#endif
-
 static int __init armada_370_xp_pmsu_init(void)
 {
 	struct device_node *np;