Added Kconfig options include: Loongson-3 CPU and machine definition,
CPU cache features, UEFI-like firmware interface, HT-linked PCI, and
big memory support.
Signed-off-by: Huacai Chen <che...@lemote.com>
Signed-off-by: Hongliang Tao <ta...@lemote.com>
Signed-off-by: Hua Yan <y...@lemote.com>
---
arch/mips/Kconfig | 28 +++++++++++++++++++++++
arch/mips/loongson/Kconfig | 52 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 80 insertions(+), 0 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index b129ca0..bddf029 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1557,6 +1557,18 @@ config CPU_LOONGSON2
select CPU_SUPPORTS_HIGHMEM
select CPU_SUPPORTS_HUGEPAGES
+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
+ select WEAK_ORDERING
+ select WEAK_REORDERING_BEYOND_LLSC
+ help
+ The Loongson 3 processor implements the MIPS III instruction set
+ with many extensions.
+
config CPU_LOONGSON1
bool
select CPU_MIPS32
@@ -1583,6 +1595,11 @@ config SYS_HAS_CPU_LOONGSON2F
select CPU_SUPPORTS_ADDRWINCFG if 64BIT
select CPU_SUPPORTS_UNCACHED_ACCELERATED
+config SYS_HAS_CPU_LOONGSON3
+ bool
+ select CPU_SUPPORTS_CPUFREQ
+ select CPU_SUPPORTS_COHERENT_CACHE
+
config SYS_HAS_CPU_LOONGSON1B
bool
@@ -1717,6 +1734,8 @@ config CPU_SUPPORTS_HUGEPAGES
bool
config CPU_SUPPORTS_UNCACHED_ACCELERATED
bool
+config CPU_SUPPORTS_COHERENT_CACHE
+ bool
config MIPS_PGD_C0_CONTEXT
bool
default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
@@ -2407,6 +2426,15 @@ 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 263beb9..dd951b8 100644
--- a/arch/mips/loongson/Kconfig
+++ b/arch/mips/loongson/Kconfig
@@ -59,6 +59,33 @@ 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
@@ -86,8 +113,33 @@ 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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