These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

4 files changed, 23 insertions, 21 deletions

diff --git a/kernel/arch/arm/mach-zynq/common.c b/kernel/arch/arm/mach-zynq/common.c
index 58ef2a700..6f39d03cc 100644
--- a/kernel/arch/arm/mach-zynq/common.c
+++ b/kernel/arch/arm/mach-zynq/common.c
@@ -154,7 +154,7 @@ static void __init zynq_timer_init(void)
 
 	zynq_clock_init();
 	of_clk_init(NULL);
-	clocksource_of_init();
+	clocksource_probe();
 }
 
 static struct map_desc zynq_cortex_a9_scu_map __initdata = {
@@ -186,15 +186,9 @@ static void __init zynq_map_io(void)
 
 static void __init zynq_irq_init(void)
 {
-	gic_set_irqchip_flags(IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND);
 	irqchip_init();
 }
 
-static void zynq_system_reset(enum reboot_mode mode, const char *cmd)
-{
-	zynq_slcr_system_reset();
-}
-
 static const char * const zynq_dt_match[] = {
 	"xlnx,zynq-7000",
 	NULL
@@ -202,8 +196,8 @@ static const char * const zynq_dt_match[] = {
 
 DT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
 	/* 64KB way size, 8-way associativity, parity disabled */
-	.l2c_aux_val	= 0x00000000,
-	.l2c_aux_mask	= 0xffffffff,
+	.l2c_aux_val    = 0x00400000,
+	.l2c_aux_mask	= 0xffbfffff,
 	.smp		= smp_ops(zynq_smp_ops),
 	.map_io		= zynq_map_io,
 	.init_irq	= zynq_irq_init,
@@ -212,5 +206,4 @@ DT_MACHINE_START(XILINX_EP107, "Xilinx Zynq Platform")
 	.init_time	= zynq_timer_init,
 	.dt_compat	= zynq_dt_match,
 	.reserve	= zynq_memory_init,
-	.restart	= zynq_system_reset,
 MACHINE_END
diff --git a/kernel/arch/arm/mach-zynq/common.h b/kernel/arch/arm/mach-zynq/common.h
index 7038cae95..79cda2e5f 100644
--- a/kernel/arch/arm/mach-zynq/common.h
+++ b/kernel/arch/arm/mach-zynq/common.h
@@ -19,7 +19,6 @@
 
 extern int zynq_slcr_init(void);
 extern int zynq_early_slcr_init(void);
-extern void zynq_slcr_system_reset(void);
 extern void zynq_slcr_cpu_stop(int cpu);
 extern void zynq_slcr_cpu_start(int cpu);
 extern bool zynq_slcr_cpu_state_read(int cpu);
diff --git a/kernel/arch/arm/mach-zynq/headsmp.S b/kernel/arch/arm/mach-zynq/headsmp.S
index 045c72720..f6d5de073 100644
--- a/kernel/arch/arm/mach-zynq/headsmp.S
+++ b/kernel/arch/arm/mach-zynq/headsmp.S
@@ -18,7 +18,7 @@ ARM_BE8(rev	r0, r0)
 .globl zynq_secondary_trampoline_jump
 zynq_secondary_trampoline_jump:
 	/* Space for jumping address */
-	.word	/* cpu 1 */
+	.word	0	/* cpu 1 */
 .globl zynq_secondary_trampoline_end
 zynq_secondary_trampoline_end:
 ENDPROC(zynq_secondary_trampoline)
diff --git a/kernel/arch/arm/mach-zynq/slcr.c b/kernel/arch/arm/mach-zynq/slcr.c
index c3c24fd8b..26320ebf3 100644
--- a/kernel/arch/arm/mach-zynq/slcr.c
+++ b/kernel/arch/arm/mach-zynq/slcr.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/io.h>
+#include <linux/reboot.h>
 #include <linux/mfd/syscon.h>
 #include <linux/of_address.h>
 #include <linux/regmap.h>
@@ -92,20 +93,21 @@ u32 zynq_slcr_get_device_id(void)
 }
 
 /**
- * zynq_slcr_system_reset - Reset the entire system.
+ * zynq_slcr_system_restart - Restart the entire system.
+ *
+ * @nb:		Pointer to restart notifier block (unused)
+ * @action:	Reboot mode (unused)
+ * @data:	Restart handler private data (unused)
+ *
+ * Return:	0 always
  */
-void zynq_slcr_system_reset(void)
+static
+int zynq_slcr_system_restart(struct notifier_block *nb,
+			     unsigned long action, void *data)
 {
 	u32 reboot;
 
 	/*
-	 * Unlock the SLCR then reset the system.
-	 * Note that this seems to require raw i/o
-	 * functions or there's a lockup?
-	 */
-	zynq_slcr_unlock();
-
-	/*
 	 * Clear 0x0F000000 bits of reboot status register to workaround
 	 * the FSBL not loading the bitstream after soft-reboot
 	 * This is a temporary solution until we know more.
@@ -113,8 +115,14 @@ void zynq_slcr_system_reset(void)
 	zynq_slcr_read(&reboot, SLCR_REBOOT_STATUS_OFFSET);
 	zynq_slcr_write(reboot & 0xF0FFFFFF, SLCR_REBOOT_STATUS_OFFSET);
 	zynq_slcr_write(1, SLCR_PS_RST_CTRL_OFFSET);
+	return 0;
 }
 
+static struct notifier_block zynq_slcr_restart_nb = {
+	.notifier_call	= zynq_slcr_system_restart,
+	.priority	= 192,
+};
+
 /**
  * zynq_slcr_cpu_start - Start cpu
  * @cpu:	cpu number
@@ -219,6 +227,8 @@ int __init zynq_early_slcr_init(void)
 	/* unlock the SLCR so that registers can be changed */
 	zynq_slcr_unlock();
 
+	register_restart_handler(&zynq_slcr_restart_nb);
+
 	pr_info("%s mapped to %p\n", np->name, zynq_slcr_base);
 
 	of_node_put(np);