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d4b6f1562a
Add Non-Uniform Memory Access (NUMA) support for LoongArch. LoongArch has 48-bit physical address, but the HyperTransport I/O bus only support 40-bit address, so we need a custom phys_to_dma() and dma_to_phys() to extract the 4-bit node id (bit 44~47) from Loongson-3's 48-bit physical address space and embed it into 40-bit. In the 40-bit dma address, node id offset can be read from the LS7A_DMA_CFG register. Reviewed-by: WANG Xuerui <git@xen0n.name> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
25 lines
611 B
Makefile
25 lines
611 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the Linux/LoongArch kernel.
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#
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extra-y := head.o vmlinux.lds
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obj-y += cpu-probe.o cacheinfo.o env.o setup.o entry.o genex.o \
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traps.o irq.o idle.o process.o dma.o mem.o io.o reset.o switch.o \
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elf.o syscall.o signal.o time.o topology.o inst.o ptrace.o vdso.o
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obj-$(CONFIG_ACPI) += acpi.o
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obj-$(CONFIG_EFI) += efi.o
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obj-$(CONFIG_CPU_HAS_FPU) += fpu.o
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obj-$(CONFIG_MODULES) += module.o module-sections.o
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obj-$(CONFIG_PROC_FS) += proc.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_NUMA) += numa.o
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CPPFLAGS_vmlinux.lds := $(KBUILD_CFLAGS)
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