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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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ce0eff0d9b
We want to use DW AXI DMAC on HSDK board in our automated verification to test cache & dma kernel code changes. This is perfect candidate as we don't depend on any external peripherals like MMC card / USB storage / etc. To increase test coverage we want to test both options: * DW AXI DMAC is connected through IOC port & dma direct ops used * DW AXI DMAC is connected to DDR port & dma noncoherent ops used Introduce 'arc_hsdk_axi_dmac_coherent' global variable which can be modified by debugger (same way as we patch 'ioc_enable') to switch between these options without recompiling the kernel. Depend on this value we tweak memory bridge configuration and "dma-coherent" DTS property of DW AXI DMAC. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
18 lines
442 B
Makefile
18 lines
442 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Built-in dtb
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builtindtb-y := nsim_700
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ifneq ($(CONFIG_ARC_BUILTIN_DTB_NAME),"")
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builtindtb-y := $(patsubst "%",%,$(CONFIG_ARC_BUILTIN_DTB_NAME))
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endif
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obj-y += $(builtindtb-y).dtb.o
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dtb-y := $(builtindtb-y).dtb
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# for CONFIG_OF_ALL_DTBS test
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dtstree := $(srctree)/$(src)
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dtb- := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
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# board-specific dtc flags
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DTC_FLAGS_hsdk += --pad 20
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