[U-Boot] [PATCH v2 04/28] x86: irq: Reserve IRQ9 for ACPI in PIC mode

[Bin Meng]

Reserve IRQ9 which is to be used as SCI interrupt number
for ACPI in PIC mode.

Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
Reviewed-by: Stefan Roese <sr at denx.de>
Tested-by: Stefan Roese <sr at denx.de>

---

Changes in v2:
- Change to use IS_ENABLED()

 arch/x86/cpu/irq.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/x86/cpu/irq.c b/arch/x86/cpu/irq.c
index 2950783..7586fc2 100644
--- a/arch/x86/cpu/irq.c
+++ b/arch/x86/cpu/irq.c
@@ -121,6 +121,11 @@ static int create_pirq_routing_table(struct udevice *dev)
 	priv->irq_mask = fdtdec_get_int(blob, node,
 					"intel,pirq-mask", PIRQ_BITMAP);
 
+	if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE)) {
+		/* Reserve IRQ9 for SCI */
+		priv->irq_mask &= ~(1 << 9);
+	}
+
 	if (priv->config == PIRQ_VIA_IBASE) {
 		int ibase_off;
 
-- 
1.8.2.1