1 files changed, 54 insertions, 26 deletions

diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index 88ade07f976c..fdab7f854f80 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -32,6 +32,7 @@ int leon_debug_irqout;
 static int dummy_master_l10_counter;
 
 unsigned long leon3_gptimer_irq; /* interrupt controller irq number */
+unsigned long leon3_gptimer_idx; /* Timer Index (0..6) within Timer Core */
 unsigned int sparc_leon_eirq;
 #define LEON_IMASK ((&leon3_irqctrl_regs->mask[0]))
 
@@ -105,10 +106,11 @@ static void leon_disable_irq(unsigned int irq_nr)
 void __init leon_init_timers(irq_handler_t counter_fn)
 {
         int irq;
-        struct device_node *rootnp, *np;
+        struct device_node *rootnp, *np, *nnp;
         struct property *pp;
         int len;
         int cpu, icsel;
+        int ampopts;
 
         leondebug_irq_disable = 0;
         leon_debug_irqout = 0;
@@ -131,30 +133,52 @@ void __init leon_init_timers(irq_handler_t counter_fn)
         leon3_irqctrl_regs = *(struct leon3_irqctrl_regs_map **)pp->value;
 
         /* Find GPTIMER Timer Registers base address otherwise bail out. */
-        np = of_find_node_by_name(rootnp, "GAISLER_GPTIMER");
-        if (!np) {
-                np = of_find_node_by_name(np, "01_011");
-                if (!np)
-                        goto bad;
-        }
-        pp = of_find_property(np, "reg", &len);
-        if (!pp)
-                goto bad;
-        leon3_gptimer_regs = *(struct leon3_gptimer_regs_map **)pp->value;
-        pp = of_find_property(np, "interrupts", &len);
-        if (!pp)
-                goto bad;
-        leon3_gptimer_irq = *(unsigned int *)pp->value;
+        nnp = rootnp;
+        do {
+                np = of_find_node_by_name(nnp, "GAISLER_GPTIMER");
+                if (!np) {
+                        np = of_find_node_by_name(nnp, "01_011");
+                        if (!np)
+                                goto bad;
+                }
+
+                ampopts = 0;
+                pp = of_find_property(np, "ampopts", &len);
+                if (pp) {
+                        ampopts = *(int *)pp->value;
+                        if (ampopts == 0) {
+                                /* Skip this instance, resource already
+                                 * allocated by other OS */
+                                nnp = np;
+                                continue;
+                        }
+                }
+
+                /* Select Timer-Instance on Timer Core. Default is zero */
+                leon3_gptimer_idx = ampopts & 0x7;
+
+                pp = of_find_property(np, "reg", &len);
+                if (pp)
+                        leon3_gptimer_regs = *(struct leon3_gptimer_regs_map **)
+                                                pp->value;
+                pp = of_find_property(np, "interrupts", &len);
+                if (pp)
+                        leon3_gptimer_irq = *(unsigned int *)pp->value;
+        } while (0);
 
         if (leon3_gptimer_regs && leon3_irqctrl_regs && leon3_gptimer_irq) {
-                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].val, 0);
-                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].rld,
-                                      (((1000000 / HZ) - 1)));
-                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, 0);
+                LEON3_BYPASS_STORE_PA(
+                        &leon3_gptimer_regs->e[leon3_gptimer_idx].val, 0);
+                LEON3_BYPASS_STORE_PA(
+                        &leon3_gptimer_regs->e[leon3_gptimer_idx].rld,
+                        (((1000000 / HZ) - 1)));
+                LEON3_BYPASS_STORE_PA(
+                        &leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, 0);
 
 #ifdef CONFIG_SMP
                 leon_percpu_timer_dev[0].start = (int)leon3_gptimer_regs;
-                leon_percpu_timer_dev[0].irq = leon3_gptimer_irq+1;
+                leon_percpu_timer_dev[0].irq = leon3_gptimer_irq + 1 +
+                                               leon3_gptimer_idx;
 
                 if (!(LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config) &
                       (1<<LEON3_GPTIMER_SEPIRQ))) {
@@ -162,9 +186,13 @@ void __init leon_init_timers(irq_handler_t counter_fn)
                         BUG();
                 }
 
-                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].val, 0);
-                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].rld, (((1000000/HZ) - 1)));
-                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl, 0);
+                LEON3_BYPASS_STORE_PA(
+                        &leon3_gptimer_regs->e[leon3_gptimer_idx+1].val, 0);
+                LEON3_BYPASS_STORE_PA(
+                        &leon3_gptimer_regs->e[leon3_gptimer_idx+1].rld,
+                        (((1000000/HZ) - 1)));
+                LEON3_BYPASS_STORE_PA(
+                        &leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl, 0);
 # endif
 
                 /*
@@ -184,7 +212,7 @@ void __init leon_init_timers(irq_handler_t counter_fn)
                 goto bad;
         }
 
-        irq = request_irq(leon3_gptimer_irq,
+        irq = request_irq(leon3_gptimer_irq+leon3_gptimer_idx,
                           counter_fn,
                           (IRQF_DISABLED | SA_STATIC_ALLOC), "timer", NULL);
 
@@ -216,13 +244,13 @@ void __init leon_init_timers(irq_handler_t counter_fn)
 # endif
 
         if (leon3_gptimer_regs) {
-                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl,
+                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl,
                                       LEON3_GPTIMER_EN |
                                       LEON3_GPTIMER_RL |
                                       LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN);
 
 #ifdef CONFIG_SMP
-                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl,
+                LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl,
                                       LEON3_GPTIMER_EN |
                                       LEON3_GPTIMER_RL |
                                       LEON3_GPTIMER_LD |