x86: unify arch/x86/kernel/Makefile(s)

Combine the 32 and 64 bit specific Makefiles in one file.
While doing so link order was (almost) preserved on 32 bit
but on 64 bit link order changed a lot.

Patch was checked with defconfig + allyesconfig builds.
The same .o files were linked in these configurations.

To keep readability of the Makefiles a few Kconfig
symbols was added/modified and it was checked that
they were not used anywhere else.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 85 insertions, 8 deletions

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 38573340b14..0903bbf0ca4 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -1,9 +1,86 @@
-ifeq ($(CONFIG_X86_32),y)
-include ${srctree}/arch/x86/kernel/Makefile_32
-else
-include ${srctree}/arch/x86/kernel/Makefile_64
-endif
+#
+# Makefile for the linux kernel.
+#
+
+extra-y                := head_$(BITS).o init_task.o vmlinux.lds
+extra-$(CONFIG_X86_64) += head64.o
+
+CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE)
+CFLAGS_vsyscall_64.o := $(PROFILING) -g0
+
+obj-y                   := process_$(BITS).o signal_$(BITS).o entry_$(BITS).o
+obj-y                   += traps_$(BITS).o irq_$(BITS).o
+obj-y                   += time_$(BITS).o ioport_$(BITS).o ldt.o
+obj-y                   += setup_$(BITS).o i8259_$(BITS).o
+obj-$(CONFIG_X86_32)    += sys_i386_32.o i386_ksyms_32.o
+obj-$(CONFIG_X86_64)    += sys_x86_64.o x8664_ksyms_64.o
+obj-$(CONFIG_X86_64)    += syscall_64.o vsyscall_64.o setup64.o
+obj-y                   += pci-dma_$(BITS).o  bootflag.o e820_$(BITS).o
+obj-y                   += quirks.o i8237.o topology.o
+obj-y                   += alternative.o i8253.o
+obj-$(CONFIG_X86_64)    += pci-nommu_64.o bugs_64.o
+obj-y                   += tsc_$(BITS).o io_delay.o rtc.o
+
+obj-y                           += i387.o
+obj-y                           += ptrace.o
+obj-y                           += ds.o
+obj-$(CONFIG_X86_32)            += tls.o
+obj-$(CONFIG_IA32_EMULATION)    += tls.o
+obj-y                           += step.o
+obj-$(CONFIG_STACKTRACE)        += stacktrace.o
+obj-y                           += cpu/
+obj-y                           += acpi/
+obj-$(CONFIG_X86_BIOS_REBOOT)   += reboot_32.o
+obj-$(CONFIG_X86_64)            += reboot_64.o
+obj-$(CONFIG_MCA)               += mca_32.o
+obj-$(CONFIG_X86_MSR)           += msr.o
+obj-$(CONFIG_X86_CPUID)         += cpuid.o
+obj-$(CONFIG_MICROCODE)         += microcode.o
+obj-$(CONFIG_PCI)               += early-quirks.o
+obj-$(CONFIG_APM)               += apm_32.o
+obj-$(CONFIG_X86_SMP)           += smp_$(BITS).o smpboot_$(BITS).o tsc_sync.o
+obj-$(CONFIG_X86_32_SMP)        += smpcommon_32.o
+obj-$(CONFIG_X86_64_SMP)        += smp_64.o smpboot_64.o tsc_sync.o
+obj-$(CONFIG_X86_TRAMPOLINE)    += trampoline_$(BITS).o
+obj-$(CONFIG_X86_MPPARSE)       += mpparse_$(BITS).o
+obj-$(CONFIG_X86_LOCAL_APIC)    += apic_$(BITS).o nmi_$(BITS).o
+obj-$(CONFIG_X86_IO_APIC)       += io_apic_$(BITS).o
+obj-$(CONFIG_X86_REBOOTFIXUPS)  += reboot_fixups_32.o
+obj-$(CONFIG_KEXEC)             += machine_kexec_$(BITS).o
+obj-$(CONFIG_KEXEC)             += relocate_kernel_$(BITS).o crash.o
+obj-$(CONFIG_CRASH_DUMP)        += crash_dump_$(BITS).o
+obj-$(CONFIG_X86_NUMAQ)         += numaq_32.o
+obj-$(CONFIG_X86_SUMMIT_NUMA)   += summit_32.o
+obj-$(CONFIG_X86_VSMP)          += vsmp_64.o
+obj-$(CONFIG_KPROBES)           += kprobes.o
+obj-$(CONFIG_MODULES)           += module_$(BITS).o
+obj-$(CONFIG_ACPI_SRAT)         += srat_32.o
+obj-$(CONFIG_EFI)               += efi.o efi_$(BITS).o efi_stub_$(BITS).o
+obj-$(CONFIG_DOUBLEFAULT)       += doublefault_32.o
+obj-$(CONFIG_VM86)              += vm86_32.o
+obj-$(CONFIG_EARLY_PRINTK)      += early_printk.o
+
+obj-$(CONFIG_HPET_TIMER)        += hpet.o
 
-# Workaround to delete .lds files with make clean
-# The problem is that we do not enter Makefile_32 with make clean.
-clean-files := vsyscall*.lds vsyscall*.so
+obj-$(CONFIG_K8_NB)             += k8.o
+obj-$(CONFIG_MGEODE_LX)         += geode_32.o mfgpt_32.o
+
+obj-$(CONFIG_VMI)               += vmi_32.o vmiclock_32.o
+obj-$(CONFIG_PARAVIRT)          += paravirt.o paravirt_patch_$(BITS).o
+obj-y                           += pcspeaker.o
+
+obj-$(CONFIG_SCx200)            += scx200_32.o
+
+###
+# 64 bit specific files
+ifeq ($(CONFIG_X86_64),y)
+        obj-y                           += genapic_64.o genapic_flat_64.o
+        obj-$(CONFIG_X86_PM_TIMER)      += pmtimer_64.o
+        obj-$(CONFIG_AUDIT)             += audit_64.o
+        obj-$(CONFIG_PM)                += suspend_64.o
+        obj-$(CONFIG_HIBERNATION)       += suspend_asm_64.o
+
+        obj-$(CONFIG_GART_IOMMU)        += pci-gart_64.o aperture_64.o
+        obj-$(CONFIG_CALGARY_IOMMU)     += pci-calgary_64.o tce_64.o
+        obj-$(CONFIG_SWIOTLB)           += pci-swiotlb_64.o
+endif