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    Subject[PATCH V3 10/16] MIPS: Loongson: Add Loongson-3 Kconfig options.
    Date
    Added Kconfig options include: Loongson-3 CPU and machine definition,
    UEFI-like firmware interface, HT-linked PCI, big memory support, etc.

    Signed-off-by: Huacai Chen <chenhc@lemote.com>
    Signed-off-by: Hongliang Tao <taohl@lemote.com>
    Signed-off-by: Hua Yan <yanh@lemote.com>
    ---
    arch/mips/Kconfig | 22 ++++++++++++++++++
    arch/mips/loongson/Kconfig | 52 ++++++++++++++++++++++++++++++++++++++++++++
    2 files changed, 74 insertions(+), 0 deletions(-)

    diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
    index c179461..da2b1e5 100644
    --- a/arch/mips/Kconfig
    +++ b/arch/mips/Kconfig
    @@ -1544,6 +1544,16 @@ config CPU_LOONGSON2
    select CPU_SUPPORTS_64BIT_KERNEL
    select CPU_SUPPORTS_HIGHMEM

    +config CPU_LOONGSON3
    + bool "Loongson 3 CPU"
    + depends on SYS_HAS_CPU_LOONGSON3
    + select CPU_SUPPORTS_32BIT_KERNEL
    + select CPU_SUPPORTS_64BIT_KERNEL
    + select CPU_SUPPORTS_HIGHMEM
    + help
    + The Loongson 3 processor implements the MIPS III instruction set
    + with many extensions.
    +
    config CPU_BMIPS
    bool
    select CPU_MIPS32
    @@ -1562,6 +1572,9 @@ config SYS_HAS_CPU_LOONGSON2F
    select CPU_SUPPORTS_ADDRWINCFG if 64BIT
    select CPU_SUPPORTS_UNCACHED_ACCELERATED

    +config SYS_HAS_CPU_LOONGSON3
    + bool
    +
    config SYS_HAS_CPU_MIPS32_R1
    bool

    @@ -2361,6 +2374,15 @@ config PCI
    your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
    say Y, otherwise N.

    +config HT_PCI
    + bool "Support for HT-linked PCI"
    + select PCI_DOMAINS
    + help
    + Loongson family machines use Hyper-Transport bus for inter-core
    + connection and device connection. The PCI bus is a subordinate
    + linked at HT. Choose Y unless you are using Loongson 2E/2F based
    + machines.
    +
    config PCI_DOMAINS
    bool

    diff --git a/arch/mips/loongson/Kconfig b/arch/mips/loongson/Kconfig
    index aca93ee..9a591ae 100644
    --- a/arch/mips/loongson/Kconfig
    +++ b/arch/mips/loongson/Kconfig
    @@ -58,6 +58,33 @@ config LEMOTE_MACH2F

    These family machines include fuloong2f mini PC, yeeloong2f notebook,
    LingLoong allinone PC and so forth.
    +
    +config LEMOTE_MACH3A
    + bool "Lemote Loongson 3A family machines"
    + select ARCH_SPARSEMEM_ENABLE
    + select GENERIC_ISA_DMA_SUPPORT_BROKEN
    + select GENERIC_HARDIRQS_NO__DO_IRQ
    + select BOOT_ELF32
    + select BOARD_SCACHE
    + select CSRC_R4K
    + select CEVT_R4K
    + select CPU_HAS_WB
    + select HW_HAS_PCI
    + select ISA
    + select I8259
    + select IRQ_CPU
    + select SYS_HAS_CPU_LOONGSON3
    + select SYS_HAS_EARLY_PRINTK
    + select SYS_SUPPORTS_SMP
    + select SYS_SUPPORTS_32BIT_KERNEL
    + select SYS_SUPPORTS_64BIT_KERNEL
    + select SYS_SUPPORTS_HIGHMEM
    + select SYS_SUPPORTS_LITTLE_ENDIAN
    + select LOONGSON_MC146818
    + select UEFI_FIRMWARE_INTERFACE
    + help
    + Lemote Loongson 3A family machines utilize the 3A revision of
    + Loongson processor and RS780/SBX00 chipset.
    endchoice

    config CS5536
    @@ -85,8 +112,33 @@ config LOONGSON_UART_BASE
    default y
    depends on EARLY_PRINTK || SERIAL_8250

    +config LOONGSON_BIGMEM
    + bool "Soft IOMMU Support for Big Memory (>4GB)"
    + depends on CPU_LOONGSON3
    + select SWIOTLB
    + select ZONE_DMA32
    +
    +config IOMMU_HELPER
    + bool
    +
    +config NEED_SG_DMA_LENGTH
    + bool
    +
    +config SWIOTLB
    + bool
    + select IOMMU_HELPER
    + select NEED_SG_DMA_LENGTH
    + select NEED_DMA_MAP_STATE
    +
    config LOONGSON_MC146818
    bool
    default n

    +config ARCH_SPARSEMEM_ENABLE
    + bool
    + select SPARSEMEM_STATIC
    +
    +config UEFI_FIRMWARE_INTERFACE
    + bool
    +
    endif # MACH_LOONGSON
    --
    1.7.7.3


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