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hw/riscv/virt: Add IOMMU as platform device if the option is set

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Add a new machine option called 'iommu-sys' that enables a
riscv-iommu-sys platform device for the 'virt' machine. The option is
default 'off'.

The device will use IRQs 36 to 39.

We will not support both riscv-iommu-sys and riscv-iommu-pci devices in
the same board in this first implementation. If a riscv-iommu-pci device
is added in the command line we will disable the riscv-iommu-sys device.

Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20241106133407.604587-5-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Sunil V L 2024-11-06 10:34:04 -03:00 • committed by Alistair Francis
parent 5b128435dc
commit 2c12de1460
3 changed files with 109 additions and 3 deletions
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2
include/hw/riscv/iommu.h
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@ -37,4 +37,6 @@ typedef struct RISCVIOMMUStatePci RISCVIOMMUStatePci;
OBJECT_DECLARE_SIMPLE_TYPE(RISCVIOMMUStateSys, RISCV_IOMMU_SYS)
typedef struct RISCVIOMMUStateSys RISCVIOMMUStateSys;
#define FDT_IRQ_TYPE_EDGE_LOW 1
#endif