1# 2# This file is subject to the terms and conditions of the GNU General Public 3# License. See the file "COPYING" in the main directory of this archive 4# for more details. 5# 6# This file is included by the global makefile so that you can add your own 7# architecture-specific flags and dependencies. Remember to do have actions 8# for "archclean" and "archdep" for cleaning up and making dependencies for 9# this architecture 10 11# If building with TILERA_ROOT set (i.e. using the Tilera Multicore 12# Development Environment) we can set CROSS_COMPILE based on that. 13# If we're not cross-compiling, make sure we're on the right architecture. 14# Only bother to test for a few common targets, to avoid useless errors. 15ifeq ($(CROSS_COMPILE),) 16 ifdef TILERA_ROOT 17 CROSS_COMPILE := $(TILERA_ROOT)/bin/tile- 18 else 19 goals := $(if $(MAKECMDGOALS), $(MAKECMDGOALS), all) 20 ifneq ($(strip $(filter vmlinux modules all,$(goals))),) 21 HOST_ARCH := $(shell uname -m) 22 ifneq ($(HOST_ARCH),$(ARCH)) 23$(error Set TILERA_ROOT or CROSS_COMPILE when building $(ARCH) on $(HOST_ARCH)) 24 endif 25 endif 26 endif 27endif 28 29# The tile compiler may emit .eh_frame information for backtracing. 30# In kernel modules, this causes load failures due to unsupported relocations. 31KBUILD_CFLAGS += -fno-asynchronous-unwind-tables 32 33ifneq ($(CONFIG_DEBUG_EXTRA_FLAGS),"") 34KBUILD_CFLAGS += $(CONFIG_DEBUG_EXTRA_FLAGS) 35endif 36 37LIBGCC_PATH := \ 38 $(shell $(CC) $(KBUILD_CFLAGS) $(KCFLAGS) -print-libgcc-file-name) 39 40# Provide the path to use for "make defconfig". 41# We default to the newer TILE-Gx architecture if only "tile" is given. 42ifeq ($(ARCH),tile) 43 KBUILD_DEFCONFIG := tilegx_defconfig 44else 45 KBUILD_DEFCONFIG := $(ARCH)_defconfig 46endif 47 48# Used as a file extension when useful, e.g. head_$(BITS).o 49# Not needed for (e.g.) "$(CC) -m32" since the compiler automatically 50# uses the right default anyway. 51export BITS 52ifeq ($(CONFIG_TILEGX),y) 53BITS := 64 54else 55BITS := 32 56endif 57 58head-y := arch/tile/kernel/head_$(BITS).o 59 60libs-y += arch/tile/lib/ 61libs-y += $(LIBGCC_PATH) 62 63# See arch/tile/Kbuild for content of core part of the kernel 64core-y += arch/tile/ 65 66core-$(CONFIG_TILE_GXIO) += arch/tile/gxio/ 67 68ifdef TILERA_ROOT 69INSTALL_PATH ?= $(TILERA_ROOT)/tile/boot 70endif 71 72install: 73 install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 74 install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 75 install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 76 77define archhelp 78 echo ' install - install kernel into $(INSTALL_PATH)' 79endef 80