cpu/x86: Introduce and use `CPU_X86_LAPIC`

With using a Kconfig option to add the x86 LAPIC support code to the
build, there's no need for adding the corresponding directory to subdirs
in the CPU/SoC Makefile. Comparing which CPU/SoC Makefiles added
(cpu/)x86/mtrr and (cpu/)x86/lapic before this and the corresponding
MTRR code selection patch and having verified that all platforms
added the MTRR code on that patch shows that soc/example/min86 and
soc/intel/quark are the only platforms that don't end up selecting the
LAPIC code. So for now the default value of CPU_X86_LAPIC is chosen as y
which gets overridden to n in the Kconfig of the two SoCs mentioned
above.

Change-Id: I6f683ea7ba92c91117017ebc6ad063ec54902b0a
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44228
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

15 files changed, 5 insertions, 14 deletions

diff --git a/src/cpu/amd/agesa/family14/Makefile.inc b/src/cpu/amd/agesa/family14/Makefile.inc
index 5ee0f82fe3..003aa1f532 100644
--- a/src/cpu/amd/agesa/family14/Makefile.inc
+++ b/src/cpu/amd/agesa/family14/Makefile.inc
@@ -7,4 +7,3 @@ ramstage-y += chip_name.c
 ramstage-y += model_14_init.c
 
 subdirs-y += ../../mtrr
-subdirs-y += ../../../x86/lapic
diff --git a/src/cpu/amd/agesa/family15tn/Makefile.inc b/src/cpu/amd/agesa/family15tn/Makefile.inc
index 86d840bff2..a5914475e8 100644
--- a/src/cpu/amd/agesa/family15tn/Makefile.inc
+++ b/src/cpu/amd/agesa/family15tn/Makefile.inc
@@ -10,4 +10,3 @@ smm-y += udelay.c
 
 subdirs-y += ../../mtrr
 subdirs-y += ../../smm
-subdirs-y += ../../../x86/lapic
diff --git a/src/cpu/amd/agesa/family16kb/Makefile.inc b/src/cpu/amd/agesa/family16kb/Makefile.inc
index 1cc8eff9b2..9464372d22 100644
--- a/src/cpu/amd/agesa/family16kb/Makefile.inc
+++ b/src/cpu/amd/agesa/family16kb/Makefile.inc
@@ -7,4 +7,3 @@ ramstage-y += chip_name.c
 ramstage-y += model_16_init.c
 
 subdirs-y += ../../mtrr
-subdirs-y += ../../../x86/lapic
diff --git a/src/cpu/amd/pi/00730F01/Makefile.inc b/src/cpu/amd/pi/00730F01/Makefile.inc
index f2263d042e..51f90ef6e9 100644
--- a/src/cpu/amd/pi/00730F01/Makefile.inc
+++ b/src/cpu/amd/pi/00730F01/Makefile.inc
@@ -8,4 +8,3 @@ ramstage-y += model_16_init.c
 ramstage-y += update_microcode.c
 
 subdirs-y += ../../mtrr
-subdirs-y += ../../../x86/lapic
diff --git a/src/cpu/intel/haswell/Makefile.inc b/src/cpu/intel/haswell/Makefile.inc
index ec0ceea06d..b425efd5d6 100644
--- a/src/cpu/intel/haswell/Makefile.inc
+++ b/src/cpu/intel/haswell/Makefile.inc
@@ -15,7 +15,6 @@ bootblock-y += bootblock.c
 
 postcar-y += ../car/non-evict/exit_car.S
 
-subdirs-y += ../../x86/lapic
 subdirs-y += ../microcode
 subdirs-y += ../turbo
 
diff --git a/src/cpu/intel/model_2065x/Makefile.inc b/src/cpu/intel/model_2065x/Makefile.inc
index fb85bdf4d5..b676eb6a77 100644
--- a/src/cpu/intel/model_2065x/Makefile.inc
+++ b/src/cpu/intel/model_2065x/Makefile.inc
@@ -1,6 +1,5 @@
 ramstage-y += model_2065x_init.c
 subdirs-y += ../../x86/name
-subdirs-y += ../../x86/lapic
 subdirs-y += ../../intel/turbo
 subdirs-y += ../../intel/microcode
 subdirs-y += ../smm/gen1
diff --git a/src/cpu/intel/model_206ax/Makefile.inc b/src/cpu/intel/model_206ax/Makefile.inc
index fec509c193..90dfeb3a66 100644
--- a/src/cpu/intel/model_206ax/Makefile.inc
+++ b/src/cpu/intel/model_206ax/Makefile.inc
@@ -2,7 +2,6 @@ ramstage-y += model_206ax_init.c
 subdirs-y += ../../x86/name
 subdirs-y += ../smm/gen1
 
-subdirs-y += ../../x86/lapic
 subdirs-y += ../microcode
 subdirs-y += ../turbo
 
diff --git a/src/cpu/intel/slot_1/Makefile.inc b/src/cpu/intel/slot_1/Makefile.inc
index b2422f4957..856ecf6697 100644
--- a/src/cpu/intel/slot_1/Makefile.inc
+++ b/src/cpu/intel/slot_1/Makefile.inc
@@ -7,7 +7,6 @@ subdirs-y += ../model_65x
 subdirs-y += ../model_67x
 subdirs-y += ../model_68x
 subdirs-y += ../model_6bx
-subdirs-y += ../../x86/lapic
 subdirs-y += ../microcode
 
 bootblock-y += ../car/p3/cache_as_ram.S
diff --git a/src/cpu/intel/socket_441/Makefile.inc b/src/cpu/intel/socket_441/Makefile.inc
index e338ea1836..58ec230d18 100644
--- a/src/cpu/intel/socket_441/Makefile.inc
+++ b/src/cpu/intel/socket_441/Makefile.inc
@@ -1,5 +1,4 @@
 subdirs-y += ../model_106cx
-subdirs-y += ../../x86/lapic
 subdirs-y += ../microcode
 subdirs-y += ../speedstep
 
diff --git a/src/cpu/intel/socket_BGA956/Makefile.inc b/src/cpu/intel/socket_BGA956/Makefile.inc
index 5f92919e17..8cafa7e65a 100644
--- a/src/cpu/intel/socket_BGA956/Makefile.inc
+++ b/src/cpu/intel/socket_BGA956/Makefile.inc
@@ -1,5 +1,4 @@
 subdirs-y += ../model_1067x
-subdirs-y += ../../x86/lapic
 subdirs-y += ../microcode
 subdirs-y += ../speedstep
 
diff --git a/src/cpu/intel/socket_FCBGA559/Makefile.inc b/src/cpu/intel/socket_FCBGA559/Makefile.inc
index 48ba3a95a2..f6d54c9f8a 100644
--- a/src/cpu/intel/socket_FCBGA559/Makefile.inc
+++ b/src/cpu/intel/socket_FCBGA559/Makefile.inc
@@ -1,5 +1,4 @@
 subdirs-y += ../model_106cx
-subdirs-y += ../../x86/lapic
 subdirs-y += ../microcode
 subdirs-y += ../speedstep
 
diff --git a/src/cpu/intel/socket_LGA775/Makefile.inc b/src/cpu/intel/socket_LGA775/Makefile.inc
index 520016808f..9b08be6cf6 100644
--- a/src/cpu/intel/socket_LGA775/Makefile.inc
+++ b/src/cpu/intel/socket_LGA775/Makefile.inc
@@ -2,7 +2,6 @@ subdirs-y += ../model_6fx
 subdirs-y += ../model_f3x
 subdirs-y += ../model_f4x
 subdirs-y += ../model_1067x
-subdirs-y += ../../x86/lapic
 subdirs-y += ../microcode
 subdirs-y += ../speedstep
 
diff --git a/src/cpu/qemu-x86/Makefile.inc b/src/cpu/qemu-x86/Makefile.inc
index 42e18060b2..b50dee5ccc 100644
--- a/src/cpu/qemu-x86/Makefile.inc
+++ b/src/cpu/qemu-x86/Makefile.inc
@@ -6,5 +6,3 @@ bootblock-y += bootblock.c
 romstage-y += ../intel/car/romstage.c
 
 ramstage-y += qemu.c
-
-subdirs-y += ../x86/lapic
diff --git a/src/cpu/x86/Kconfig b/src/cpu/x86/Kconfig
index bae38891ad..a289325523 100644
--- a/src/cpu/x86/Kconfig
+++ b/src/cpu/x86/Kconfig
@@ -4,6 +4,10 @@ config CPU_X86_CACHE_HELPER
 	help
 	  Add the x86_enable_cache ramstage helper function to the build.
 
+config CPU_X86_LAPIC
+	bool
+	default y
+
 config PARALLEL_MP
 	def_bool y
 	depends on !LEGACY_SMP_INIT
diff --git a/src/cpu/x86/Makefile.inc b/src/cpu/x86/Makefile.inc
index 05df6e0f92..a6c51d023a 100644
--- a/src/cpu/x86/Makefile.inc
+++ b/src/cpu/x86/Makefile.inc
@@ -1,4 +1,5 @@
 subdirs-$(CONFIG_CPU_X86_CACHE_HELPER) += cache
+subdirs-$(CONFIG_CPU_X86_LAPIC) += lapic
 subdirs-y += mtrr
 subdirs-y += pae
 subdirs-$(CONFIG_HAVE_SMI_HANDLER) += smm