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Improved arm64 chip detection

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Use ARMv8 Main ID Register (exposed thru /proc/cpuinfo) to identify
the CPU implementor and part number. For further details, see the
ARMv8 ARM D7.2.66.

Change-Id: I2b0d0b165cda4ab9fc57c645af90e9e354b73f44
Signed-off-by: Brian Brooks <brian.brooks@arm.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Ola Liljedahl <ola.liljedahl@arm.com>
Reviewed-by: Song Zhu <song.zhu@arm.com>
This commit is contained in:
Brian Brooks
2017-09-06 13:19:48 -05:00
committed by Damjan Marion
parent b2d2fc7f58
commit a7191840be
1 changed files with 48 additions and 13 deletions
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61
dpdk/Makefile
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@ -75,29 +75,64 @@ ifeq ($(MACHINE),$(filter $(MACHINE),x86_64 i686))
DPDK_TARGET ?= $(MACHINE)-native-linuxapp-$(DPDK_CC)
DPDK_MACHINE ?= nhm
DPDK_TUNE ?= core-avx2
##############################################################################
# ARM64
##############################################################################
else ifeq ($(MACHINE),aarch64)
export CROSS=""
ifneq (,$(findstring thunder,$(shell [[ -f /sys/bus/pci/devices/0000:00:01.0/uevent ]] && cat /sys/bus/pci/devices/0000:00:01.0/uevent | grep cavium)))
##############################################################################
# Cavium ThunderX
##############################################################################
DPDK_TARGET ?= arm64-thunderx-linuxapp-$(DPDK_CC)
DPDK_MACHINE ?= thunderx
DPDK_TUNE ?= generic
else
##############################################################################
# Generic ARM64
##############################################################################
DPDK_TARGET ?= arm64-armv8a-linuxapp-$(DPDK_CC)
DPDK_MACHINE ?= armv8a
DPDK_TUNE ?= generic
CPU_IMP_ARM = 0x41
CPU_IMP_CAVIUM = 0x43
CPU_PART_ARM_CORTEX_A53 = 0xd03
CPU_PART_ARM_CORTEX_A57 = 0xd07
CPU_PART_ARM_CORTEX_A72 = 0xd08
CPU_PART_ARM_CORTEX_A73 = 0xd09
CPU_PART_CAVIUM_THUNDERX = 0x0a1
CPU_PART_CAVIUM_THUNDERX_81XX = 0x0a2
CPU_PART_CAVIUM_THUNDERX_83XX = 0x0a3
MIDR_IMPLEMENTER=$(shell awk '/implementer/ {print $$4;exit}' /proc/cpuinfo)
MIDR_PARTNUM=$(shell awk '/part/ {print $$4;exit}' /proc/cpuinfo)
ifeq ($(MIDR_IMPLEMENTER),$(CPU_IMP_ARM))
##############################################################################
# Arm Cortex
##############################################################################
CPU_PART_ARM_TUNE := $(CPU_PART_ARM_CORTEX_A53)/cortex-a53 \
$(CPU_PART_ARM_CORTEX_A57)/cortex-a57 \
$(CPU_PART_ARM_CORTEX_A72)/cortex-a72 \
$(CPU_PART_ARM_CORTEX_A73)/cortex-a73
CPU_TUNE = $(notdir $(filter $(MIDR_PARTNUM)/%,$(CPU_PART_ARM_TUNE)))
ifneq ($(CPU_TUNE),)
DPDK_TUNE = $(CPU_TUNE)
else
$(warning Unknown Arm CPU)
endif
else ifeq ($(MIDR_IMPLEMENTER),$(CPU_IMP_CAVIUM))
##############################################################################
# Cavium ThunderX
##############################################################################
ifneq (,$(findstring $(MIDR_PARTNUM),$(CPU_PART_CAVIUM_THUNDERX) \
$(CPU_PART_CAVIUM_THUNDERX_81XX) $(CPU_PART_CAVIUM_THUNDERX_83XX)))
DPDK_TARGET = arm64-thunderx-linuxapp-$(DPDK_CC)
DPDK_MACHINE = thunderx
else
$(warning Unknown Cavium CPU)
endif
endif
##############################################################################
# Unknown platofrm
# Unknown platform
##############################################################################
else
$(error unknown platform)
$(error Unknown platform)
endif
# /proc/cpuinfo does not exist on platforms without a /proc and on some