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aarch64: Fix IRQ number setting for ACPI

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On FDT, VMM can allocate IRQ from 0 for devices.
But on ACPI, the lowest range below 32 has to be avoided.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This commit is contained in:
Michael Zhao
2021-03-23 19:41:36 +08:00
committed by Sebastien Boeuf
parent efc583c13e
commit ff46fb69d0
9 changed files with 35 additions and 18 deletions
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arch/src/aarch64/layout.rs
+4 -4
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@@ -97,8 +97,8 @@ pub const KERNEL_START: u64 = ACPI_START + ACPI_MAX_SIZE as u64;
// * less than 1023 and
// * a multiple of 32.
// We are setting up our interrupt controller to support a maximum of 256 interrupts.
/// First usable interrupt on aarch64.
pub const IRQ_BASE: u32 = 0;
/// First usable interrupt on aarch64
pub const IRQ_BASE: u32 = 32;
/// Last usable interrupt on aarch64.
pub const IRQ_MAX: u32 = 255;
/// Number of supported interrupts
pub const IRQ_NUM: u32 = 256;