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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-26 17:41:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-26 17:41:04 -0700
commit69f1d1a6acbaa7d83ef3f4ee26209c58cd000204 (patch)
tree12be981f8a123b8361edd64b84fd72f339a9655d /arch/arm/mach-exynos4/platsmp.c
parent2d86a3f04e345b03d5e429bfe14985ce26bff4dc (diff)
parent1e09939bad24df95ddeeeca4fbec64fa94b66def (diff)
downloadop-kernel-dev-69f1d1a6acbaa7d83ef3f4ee26209c58cd000204.zip
op-kernel-dev-69f1d1a6acbaa7d83ef3f4ee26209c58cd000204.tar.gz
Merge branch 'next/devel' of ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/devel' of ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (128 commits) ARM: S5P64X0: External Interrupt Support ARM: EXYNOS4: Enable MFC on Samsung NURI ARM: EXYNOS4: Enable MFC on universal_c210 ARM: S5PV210: Enable MFC on Goni ARM: S5P: Add support for MFC device ARM: EXYNOS4: Add support FIMD on SMDKC210 ARM: EXYNOS4: Add platform device and helper functions for FIMD ARM: EXYNOS4: Add resource definition for FIMD ARM: EXYNOS4: Change devname for FIMD clkdev ARM: SAMSUNG: Add IRQ_I2S0 definition ARM: SAMSUNG: Add platform device for idma ARM: EXYNOS4: Add more registers to be saved and restored for PM ARM: EXYNOS4: Add more register addresses of CMU ARM: EXYNOS4: Add platform device for dwmci driver ARM: EXYNOS4: configure rtc-s3c on NURI ARM: EXYNOS4: configure MAX8903 secondary charger on NURI ARM: EXYNOS4: configure ADC on NURI ARM: EXYNOS4: configure MAX17042 fuel gauge on NURI ARM: EXYNOS4: configure regulators and PMIC(MAX8997) on NURI ARM: EXYNOS4: Increase NR_IRQS for devices with more IRQs ... Fix up tons of silly conflicts: - arch/arm/mach-davinci/include/mach/psc.h - arch/arm/mach-exynos4/Kconfig - arch/arm/mach-exynos4/mach-smdkc210.c - arch/arm/mach-exynos4/pm.c - arch/arm/mach-imx/mm-imx1.c - arch/arm/mach-imx/mm-imx21.c - arch/arm/mach-imx/mm-imx25.c - arch/arm/mach-imx/mm-imx27.c - arch/arm/mach-imx/mm-imx31.c - arch/arm/mach-imx/mm-imx35.c - arch/arm/mach-mx5/mm.c - arch/arm/mach-s5pv210/mach-goni.c - arch/arm/mm/Kconfig
Diffstat (limited to 'arch/arm/mach-exynos4/platsmp.c')
-rw-r--r--arch/arm/mach-exynos4/platsmp.c57
1 files changed, 55 insertions, 2 deletions
diff --git a/arch/arm/mach-exynos4/platsmp.c b/arch/arm/mach-exynos4/platsmp.c
index b68d5bd..7c2282c 100644
--- a/arch/arm/mach-exynos4/platsmp.c
+++ b/arch/arm/mach-exynos4/platsmp.c
@@ -28,9 +28,12 @@
#include <mach/hardware.h>
#include <mach/regs-clock.h>
+#include <mach/regs-pmu.h>
extern void exynos4_secondary_startup(void);
+#define CPU1_BOOT_REG S5P_VA_SYSRAM
+
/*
* control for which core is the next to come out of the secondary
* boot "holding pen"
@@ -58,6 +61,31 @@ static void __iomem *scu_base_addr(void)
static DEFINE_SPINLOCK(boot_lock);
+static void __cpuinit exynos4_gic_secondary_init(void)
+{
+ void __iomem *dist_base = S5P_VA_GIC_DIST +
+ (EXYNOS4_GIC_BANK_OFFSET * smp_processor_id());
+ void __iomem *cpu_base = S5P_VA_GIC_CPU +
+ (EXYNOS4_GIC_BANK_OFFSET * smp_processor_id());
+ int i;
+
+ /*
+ * Deal with the banked PPI and SGI interrupts - disable all
+ * PPI interrupts, ensure all SGI interrupts are enabled.
+ */
+ __raw_writel(0xffff0000, dist_base + GIC_DIST_ENABLE_CLEAR);
+ __raw_writel(0x0000ffff, dist_base + GIC_DIST_ENABLE_SET);
+
+ /*
+ * Set priority on PPI and SGI interrupts
+ */
+ for (i = 0; i < 32; i += 4)
+ __raw_writel(0xa0a0a0a0, dist_base + GIC_DIST_PRI + i * 4 / 4);
+
+ __raw_writel(0xf0, cpu_base + GIC_CPU_PRIMASK);
+ __raw_writel(1, cpu_base + GIC_CPU_CTRL);
+}
+
void __cpuinit platform_secondary_init(unsigned int cpu)
{
/*
@@ -65,7 +93,7 @@ void __cpuinit platform_secondary_init(unsigned int cpu)
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
- gic_secondary_init(0);
+ exynos4_gic_secondary_init();
/*
* let the primary processor know we're out of the
@@ -100,16 +128,41 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
*/
write_pen_release(cpu);
+ if (!(__raw_readl(S5P_ARM_CORE1_STATUS) & S5P_CORE_LOCAL_PWR_EN)) {
+ __raw_writel(S5P_CORE_LOCAL_PWR_EN,
+ S5P_ARM_CORE1_CONFIGURATION);
+
+ timeout = 10;
+
+ /* wait max 10 ms until cpu1 is on */
+ while ((__raw_readl(S5P_ARM_CORE1_STATUS)
+ & S5P_CORE_LOCAL_PWR_EN) != S5P_CORE_LOCAL_PWR_EN) {
+ if (timeout-- == 0)
+ break;
+
+ mdelay(1);
+ }
+
+ if (timeout == 0) {
+ printk(KERN_ERR "cpu1 power enable failed");
+ spin_unlock(&boot_lock);
+ return -ETIMEDOUT;
+ }
+ }
/*
* Send the secondary CPU a soft interrupt, thereby causing
* the boot monitor to read the system wide flags register,
* and branch to the address found there.
*/
- gic_raise_softirq(cpumask_of(cpu), 1);
timeout = jiffies + (1 * HZ);
while (time_before(jiffies, timeout)) {
smp_rmb();
+
+ __raw_writel(BSYM(virt_to_phys(exynos4_secondary_startup)),
+ CPU1_BOOT_REG);
+ gic_raise_softirq(cpumask_of(cpu), 1);
+
if (pen_release == -1)
break;
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