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Commit 0e476d91 authored by Huacai Chen's avatar Huacai Chen Committed by Ralf Baechle
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MIPS: Loongson: Add Loongson-3 Kconfig options 



Added Kconfig options include: Loongson-3 CPU and machine definition,
CPU cache features, UEFI-like firmware interface (LEFI), HT-linked PCI,
and swiotlb support.

Signed-off-by: default avatarHuacai Chen <chenhc@lemote.com>
Signed-off-by: default avatarHongliang Tao <taohl@lemote.com>
Signed-off-by: default avatarHua Yan <yanh@lemote.com>
Tested-by: default avatarAlex Smith <alex.smith@imgtec.com>
Reviewed-by: default avatarAlex Smith <alex.smith@imgtec.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/6637


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 1299b0e0

arch/mips/Kconfig

+28 −1
Original line number Diff line number Diff line
@@ -1153,6 +1153,18 @@ choice 
	prompt "CPU type"

	default CPU_R4X00



config CPU_LOONGSON3

	bool "Loongson 3 CPU"

	depends on SYS_HAS_CPU_LOONGSON3

	select CPU_SUPPORTS_64BIT_KERNEL

	select CPU_SUPPORTS_HIGHMEM

	select CPU_SUPPORTS_HUGEPAGES

	select WEAK_ORDERING

	select WEAK_REORDERING_BEYOND_LLSC

	help

		The Loongson 3 processor implements the MIPS64R2 instruction

		set with many extensions.



config CPU_LOONGSON2E

	bool "Loongson 2E"

	depends on SYS_HAS_CPU_LOONGSON2E
@@ -1549,6 +1561,10 @@ config CPU_BMIPS5000 
	select SYS_SUPPORTS_SMP

	select SYS_SUPPORTS_HOTPLUG_CPU



config SYS_HAS_CPU_LOONGSON3

	bool

	select CPU_SUPPORTS_CPUFREQ



config SYS_HAS_CPU_LOONGSON2E

	bool
@@ -1761,7 +1777,7 @@ choice 


config PAGE_SIZE_4KB

	bool "4kB"

	depends on !CPU_LOONGSON2

	depends on !CPU_LOONGSON2 && !CPU_LOONGSON3

	help

	 This option select the standard 4kB Linux page size.  On some

	 R3000-family processors this is the only available page size.  Using
@@ -2493,6 +2509,17 @@ 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"

	default y

	depends on CPU_LOONGSON3

	select 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 for Loongson-3 based machines.



config PCI_DOMAINS

	bool

arch/mips/loongson/Kconfig

+46 −0
Original line number Diff line number Diff line
@@ -59,6 +59,35 @@ 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 HT_PCI

	select I8259

	select IRQ_CPU

	select NR_CPUS_DEFAULT_4

	select SYS_HAS_CPU_LOONGSON3

	select SYS_HAS_EARLY_PRINTK

	select SYS_SUPPORTS_SMP

	select SYS_SUPPORTS_64BIT_KERNEL

	select SYS_SUPPORTS_HIGHMEM

	select SYS_SUPPORTS_LITTLE_ENDIAN

	select LOONGSON_MC146818

	select ZONE_DMA32

	select LEFI_FIRMWARE_INTERFACE

	help

		Lemote Loongson 3A family machines utilize the 3A revision of

		Loongson processor and RS780/SBX00 chipset.

endchoice



config CS5536
@@ -86,8 +115,25 @@ config LOONGSON_UART_BASE 
	default y

	depends on EARLY_PRINTK || SERIAL_8250



config IOMMU_HELPER

	bool



config NEED_SG_DMA_LENGTH

	bool



config SWIOTLB

	bool "Soft IOMMU Support for All-Memory DMA"

	default y

	depends on CPU_LOONGSON3

	select IOMMU_HELPER

	select NEED_SG_DMA_LENGTH

	select NEED_DMA_MAP_STATE



config LOONGSON_MC146818

	bool

	default n



config LEFI_FIRMWARE_INTERFACE

	bool



endif # MACH_LOONGSON

arch/mips/loongson/Platform

+1 −0
Original line number Diff line number Diff line
@@ -30,3 +30,4 @@ platform-$(CONFIG_MACH_LOONGSON) += loongson/ 
cflags-$(CONFIG_MACH_LOONGSON) += -I$(srctree)/arch/mips/include/asm/mach-loongson -mno-branch-likely

load-$(CONFIG_LEMOTE_FULOONG2E) += 0xffffffff80100000

load-$(CONFIG_LEMOTE_MACH2F) += 0xffffffff80200000

load-$(CONFIG_CPU_LOONGSON3) += 0xffffffff80200000