compiler.h: add __weak macro

Instead of writing out '__attribute__((weak))' use a shorter form.

Change-Id: If418a1d55052780077febd2d8f2089021f414b91
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25767
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Justin TerAvest <teravest@chromium.org>

3 files changed, 7 insertions, 4 deletions

diff --git a/src/soc/intel/denverton_ns/acpi.c b/src/soc/intel/denverton_ns/acpi.c
index 7386db34b8..1071ab52d3 100644
--- a/src/soc/intel/denverton_ns/acpi.c
+++ b/src/soc/intel/denverton_ns/acpi.c
@@ -19,6 +19,7 @@
 #include <arch/acpi.h>
 #include <arch/acpigen.h>
 #include <arch/smp/mpspec.h>
+#include <compiler.h>
 #include <cpu/x86/smm.h>
 #include <string.h>
 #include <device/pci.h>
@@ -329,4 +330,4 @@ void southcluster_inject_dsdt(device_t device)
 	}
 }
 
-__attribute__((weak)) void acpi_create_serialio_ssdt(acpi_header_t *ssdt) {}
+__weak void acpi_create_serialio_ssdt(acpi_header_t *ssdt) {}
diff --git a/src/soc/intel/denverton_ns/fiamux.c b/src/soc/intel/denverton_ns/fiamux.c
index 36b8223d04..418ccfa322 100644
--- a/src/soc/intel/denverton_ns/fiamux.c
+++ b/src/soc/intel/denverton_ns/fiamux.c
@@ -15,6 +15,7 @@
  *
  */
 
+#include <compiler.h>
 #include <console/console.h>
 #include <soc/fiamux.h>
 
@@ -140,7 +141,7 @@ BL_FIA_MUX_CONFIG_HOB *get_fiamux_hob_data(void)
 	return fiamux_hob_data;
 }
 
-__attribute__((weak)) size_t mainboard_get_hsio_config(BL_HSIO_INFORMATION **p_hsio_config)
+__weak size_t mainboard_get_hsio_config(BL_HSIO_INFORMATION **p_hsio_config)
 {
 	*p_hsio_config = NULL;
 	return 0;
diff --git a/src/soc/intel/denverton_ns/romstage.c b/src/soc/intel/denverton_ns/romstage.c
index f675933046..b57ffc4c90 100644
--- a/src/soc/intel/denverton_ns/romstage.c
+++ b/src/soc/intel/denverton_ns/romstage.c
@@ -15,6 +15,7 @@
  */
 
 #include <cbmem.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/x86/mtrr.h>
 #include <reset.h>
@@ -28,7 +29,7 @@
 #include <soc/smm.h>
 #include <soc/soc_util.h>
 
-void __attribute__((weak)) mainboard_config_gpios(void) {}
+void __weak mainboard_config_gpios(void) {}
 
 #define FSP_SMBIOS_MEMORY_INFO_GUID	\
 {	\
@@ -279,7 +280,7 @@ static void soc_memory_init_params(FSP_M_CONFIG *m_cfg)
 	}
 }
 
-__attribute__((weak)) void mainboard_memory_init_params(FSPM_UPD *mupd)
+__weak void mainboard_memory_init_params(FSPM_UPD *mupd)
 {
 	/* Do nothing */
 }