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x86: irq: Reserve IRQ9 for ACPI in PIC mode

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

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2016-05-07 07:46:13 -07:00
parent dca4d1a2ce
commit 07ac84eaaa
1 changed files with 5 additions and 0 deletions
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5
arch/x86/cpu/irq.c
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@ -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;