diff options
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 5c52a82e83a8..3d49317f5019 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -113,6 +113,7 @@ config RISCV select MODULES_USE_ELF_RELA if MODULES select MODULE_SECTIONS if MODULES select OF + select OF_DMA_DEFAULT_COHERENT select OF_EARLY_FLATTREE select OF_IRQ select PCI_DOMAINS_GENERIC if PCI @@ -218,6 +219,14 @@ config PGTABLE_LEVELS config LOCKDEP_SUPPORT def_bool y +config RISCV_DMA_NONCOHERENT + bool + select ARCH_HAS_DMA_PREP_COHERENT + select ARCH_HAS_SYNC_DMA_FOR_DEVICE + select ARCH_HAS_SYNC_DMA_FOR_CPU + select ARCH_HAS_SETUP_DMA_OPS + select DMA_DIRECT_REMAP + source "arch/riscv/Kconfig.socs" source "arch/riscv/Kconfig.erratas" @@ -392,6 +401,28 @@ config RISCV_ISA_SVPBMT If you don't know what to do here, say Y. +config CC_HAS_ZICBOM + bool + default y if 64BIT && $(cc-option,-mabi=lp64 -march=rv64ima_zicbom) + default y if 32BIT && $(cc-option,-mabi=ilp32 -march=rv32ima_zicbom) + +config RISCV_ISA_ZICBOM + bool "Zicbom extension support for non-coherent DMA operation" + depends on CC_HAS_ZICBOM + depends on !XIP_KERNEL && MMU + select RISCV_DMA_NONCOHERENT + select RISCV_ALTERNATIVE + default y + help + Adds support to dynamically detect the presence of the ZICBOM + extension (Cache Block Management Operations) and enable its + usage. + + The Zicbom extension can be used to handle for example + non-coherent DMA support on devices that need it. + + If you don't know what to do here, say Y. + config FPU bool "FPU support" default y |