summaryrefslogtreecommitdiff
path: root/drivers/iommu/Kconfig
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/iommu/Kconfig')
-rw-r--r--drivers/iommu/Kconfig34
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index db98eb706466..baa0d9786f50 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -14,6 +14,32 @@ menuconfig IOMMU_SUPPORT
if IOMMU_SUPPORT
+menu "Generic IOMMU Pagetable Support"
+
+# Selected by the actual pagetable implementations
+config IOMMU_IO_PGTABLE
+ bool
+
+config IOMMU_IO_PGTABLE_LPAE
+ bool "ARMv7/v8 Long Descriptor Format"
+ select IOMMU_IO_PGTABLE
+ help
+ Enable support for the ARM long descriptor pagetable format.
+ This allocator supports 4K/2M/1G, 16K/32M and 64K/512M page
+ sizes at both stage-1 and stage-2, as well as address spaces
+ up to 48-bits in size.
+
+config IOMMU_IO_PGTABLE_LPAE_SELFTEST
+ bool "LPAE selftests"
+ depends on IOMMU_IO_PGTABLE_LPAE
+ help
+ Enable self-tests for LPAE page table allocator. This performs
+ a series of page-table consistency checks during boot.
+
+ If unsure, say N here.
+
+endmenu
+
config IOMMU_IOVA
bool
@@ -295,6 +321,7 @@ config IPMMU_VMSA
depends on ARM_LPAE
depends on ARCH_SHMOBILE || COMPILE_TEST
select IOMMU_API
+ select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU
help
Support for the Renesas VMSA-compatible IPMMU Renesas found in the
@@ -312,14 +339,13 @@ config SPAPR_TCE_IOMMU
config ARM_SMMU
bool "ARM Ltd. System MMU (SMMU) Support"
- depends on ARM64 || (ARM_LPAE && OF)
- depends on MMU
+ depends on (ARM64 || ARM) && MMU
select IOMMU_API
+ select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU if ARM
help
Support for implementations of the ARM System MMU architecture
- versions 1 and 2. The driver supports both v7l and v8l table
- formats with 4k and 64k page sizes.
+ versions 1 and 2.
Say Y here if your SoC includes an IOMMU device implementing
the ARM SMMU architecture.