ARM: EXYNOS: Add support for secondary CPU bring-up on Exynos4412

Exynos4412 uses different information register for each core. This
patch adjusts the bring-up code to take that into account.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index f93d820ecab5793863c11d8c62b057aca7930f82..4ca8ff14a5bfe99dc587bce680fb4afbb4d634a5 100644 (file)
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -36,8 +36,22 @@
 
 extern void exynos4_secondary_startup(void);
 
-#define CPU1_BOOT_REG          (samsung_rev() == EXYNOS4210_REV_1_1 ? \
-                               S5P_INFORM5 : S5P_VA_SYSRAM)
+static inline void __iomem *cpu_boot_reg_base(void)
+{
+       if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_1_1)
+               return S5P_INFORM5;
+       return S5P_VA_SYSRAM;
+}
+
+static inline void __iomem *cpu_boot_reg(int cpu)
+{
+       void __iomem *boot_reg;
+
+       boot_reg = cpu_boot_reg_base();
+       if (soc_is_exynos4412())
+               boot_reg += 4*cpu;
+       return boot_reg;
+}
 
 /*
  * Write pen_release in a way that is guaranteed to be visible to all
@@ -84,6 +98,7 @@ static void __cpuinit exynos_secondary_init(unsigned int cpu)
 static int __cpuinit exynos_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
        unsigned long timeout;
+       unsigned long phys_cpu = cpu_logical_map(cpu);
 
        /*
         * Set synchronisation state between this boot processor
@@ -99,7 +114,7 @@ static int __cpuinit exynos_boot_secondary(unsigned int cpu, struct task_struct
         * Note that "pen_release" is the hardware CPU ID, whereas
         * "cpu" is Linux's internal ID.
         */
-       write_pen_release(cpu_logical_map(cpu));
+       write_pen_release(phys_cpu);
 
        if (!(__raw_readl(S5P_ARM_CORE1_STATUS) & S5P_CORE_LOCAL_PWR_EN)) {
                __raw_writel(S5P_CORE_LOCAL_PWR_EN,
@@ -133,7 +148,7 @@ static int __cpuinit exynos_boot_secondary(unsigned int cpu, struct task_struct
                smp_rmb();
 
                __raw_writel(virt_to_phys(exynos4_secondary_startup),
-                       CPU1_BOOT_REG);
+                                                       cpu_boot_reg(phys_cpu));
                gic_raise_softirq(cpumask_of(cpu), 0);
 
                if (pen_release == -1)
@@ -181,6 +196,8 @@ static void __init exynos_smp_init_cpus(void)
 
 static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
 {
+       int i;
+
        if (!soc_is_exynos5250())
                scu_enable(scu_base_addr());
 
@@ -190,8 +207,9 @@ static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
         * until it receives a soft interrupt, and then the
         * secondary CPU branches to this address.
         */
-       __raw_writel(virt_to_phys(exynos4_secondary_startup),
-                       CPU1_BOOT_REG);
+       for (i = 1; i < max_cpus; ++i)
+               __raw_writel(virt_to_phys(exynos4_secondary_startup),
+                                       cpu_boot_reg(cpu_logical_map(i)));
 }
 
 struct smp_operations exynos_smp_ops __initdata = {