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From af1da1d5a8701f39cdbae4a0ab8e04b450eef298 Mon Sep 17 00:00:00 2001
From: Daniel Hellstrom <daniel@gaisler.com>
Date: Wed, 8 Sep 2010 18:05:38 +0200
Subject: [PATCH] SPARC/LEON: find IRQ and Timer via OF-Tree, instead of hardcoded.
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
---
arch/sparc/kernel/leon_kernel.c | 23 ++++++++++++++++++++++-
1 files changed, 22 insertions(+), 1 deletions(-)
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -105,13 +105,34 @@ static void leon_disable_irq(unsigned in
void __init leon_init_timers(irq_handler_t counter_fn)
{
int irq;
+ struct device_node *rootnp, *np;
+ struct property *pp;
+ int len;
leondebug_irq_disable = 0;
leon_debug_irqout = 0;
master_l10_counter = (unsigned int *)&dummy_master_l10_counter;
dummy_master_l10_counter = 0;
- if (leon3_gptimer_regs && leon3_irqctrl_regs) {
+ /* Find IRQMP IRQ Controller Registers base address otherwise bail out. */
+ rootnp = of_find_node_by_path("/ambapp0");
+ if (rootnp && (np=of_find_node_by_name(rootnp, "GAISLER_IRQMP"))) {
+ pp = of_find_property(np, "reg", &len);
+ if (pp)
+ leon3_irqctrl_regs = *(struct leon3_irqctrl_regs_map **)pp->value;
+ }
+
+ /* Find GPTIMER Timer Registers base address otherwise bail out. */
+ if (rootnp && (np=of_find_node_by_name(rootnp, "GAISLER_GPTIMER"))) {
+ 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;
+ }
+
+ 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)));
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