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>

36 files changed, 93 insertions, 58 deletions

diff --git a/src/soc/intel/apollolake/chip.c b/src/soc/intel/apollolake/chip.c
index c563f54438..e4084fe813 100644
--- a/src/soc/intel/apollolake/chip.c
+++ b/src/soc/intel/apollolake/chip.c
@@ -20,6 +20,7 @@
 #include <arch/acpi.h>
 #include <bootstate.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/cpu.h>
 #include <cpu/x86/mp.h>
@@ -518,7 +519,7 @@ static void glk_fsp_silicon_init_params_cb(
 		sizeof(silconfig->PcieRpSelectableDeemphasis));
 }
 
-void __attribute__((weak)) mainboard_devtree_update(struct device *dev)
+void __weak mainboard_devtree_update(struct device *dev)
 {
        /* Override dev tree settings per board */
 }
diff --git a/src/soc/intel/apollolake/romstage.c b/src/soc/intel/apollolake/romstage.c
index a8a0dd1d44..3d695ea52f 100644
--- a/src/soc/intel/apollolake/romstage.c
+++ b/src/soc/intel/apollolake/romstage.c
@@ -24,6 +24,7 @@
 #include <bootmode.h>
 #include <cbfs.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/x86/mtrr.h>
 #include <device/pci_def.h>
@@ -370,13 +371,13 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)
 	car_set_var(fsp_version, version);
 }
 
-__attribute__((weak))
+__weak
 void mainboard_memory_init_params(FSPM_UPD *mupd)
 {
 	printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
 }
 
-__attribute__((weak))
+__weak
 void mainboard_save_dimm_info(void)
 {
 	printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
diff --git a/src/soc/intel/baytrail/gpio.c b/src/soc/intel/baytrail/gpio.c
index 57ad0a7028..5da510486b 100644
--- a/src/soc/intel/baytrail/gpio.c
+++ b/src/soc/intel/baytrail/gpio.c
@@ -14,6 +14,7 @@
  */
 
 #include <device/pci.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <soc/gpio.h>
 #include <soc/pmc.h>
@@ -234,7 +235,7 @@ void setup_soc_gpios(struct soc_gpio_config *config, u8 enable_xdp_tap)
 	}
 }
 
-struct soc_gpio_config* __attribute__((weak)) mainboard_get_gpios(void)
+struct soc_gpio_config* __weak mainboard_get_gpios(void)
 {
 	printk(BIOS_DEBUG, "Default/empty GPIO config\n");
 	return NULL;
diff --git a/src/soc/intel/baytrail/southcluster.c b/src/soc/intel/baytrail/southcluster.c
index d16c4ff148..84ae0ee0d3 100644
--- a/src/soc/intel/baytrail/southcluster.c
+++ b/src/soc/intel/baytrail/southcluster.c
@@ -19,6 +19,7 @@
 #include <arch/acpi.h>
 #include <bootstate.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/x86/smm.h>
 #include <device/device.h>
@@ -536,7 +537,7 @@ static const struct pci_driver southcluster __pci_driver = {
 	.device		= LPC_DEVID,
 };
 
-int __attribute__((weak)) mainboard_get_spi_config(struct spi_config *cfg)
+int __weak mainboard_get_spi_config(struct spi_config *cfg)
 {
 	return -1;
 }
diff --git a/src/soc/intel/braswell/acpi.c b/src/soc/intel/braswell/acpi.c
index 9ac5574c6f..a672f7f5de 100644
--- a/src/soc/intel/braswell/acpi.c
+++ b/src/soc/intel/braswell/acpi.c
@@ -22,6 +22,7 @@
 #include <arch/smp/mpspec.h>
 #include <cbfs.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/cpu.h>
 #include <cpu/intel/turbo.h>
@@ -552,6 +553,6 @@ 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/braswell/chip.c b/src/soc/intel/braswell/chip.c
index 1f68e842c8..3da5763925 100644
--- a/src/soc/intel/braswell/chip.c
+++ b/src/soc/intel/braswell/chip.c
@@ -15,6 +15,7 @@
  */
 
 #include <chip.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <device/device.h>
 #include <device/pci.h>
@@ -81,7 +82,7 @@ static void enable_dev(device_t dev)
 	}
 }
 
-__attribute__((weak)) void board_silicon_USB2_override(SILICON_INIT_UPD *params)
+__weak void board_silicon_USB2_override(SILICON_INIT_UPD *params)
 {
 }
 
diff --git a/src/soc/intel/braswell/gpio.c b/src/soc/intel/braswell/gpio.c
index a742f73119..23be45a1c1 100644
--- a/src/soc/intel/braswell/gpio.c
+++ b/src/soc/intel/braswell/gpio.c
@@ -14,7 +14,7 @@
  * GNU General Public License for more details.
  */
 
-
+#include <compiler.h>
 #include <console/console.h>
 #include <device/pci.h>
 #include <soc/gpio.h>
@@ -305,7 +305,7 @@ void setup_soc_gpios(struct soc_gpio_config *config, u8 enable_xdp_tap)
 		printk(BIOS_DEBUG, "Tri-state TDO and TMS\n");
 }
 
-__attribute__((weak)) struct soc_gpio_config *mainboard_get_gpios(void)
+__weak struct soc_gpio_config *mainboard_get_gpios(void)
 {
 	printk(BIOS_DEBUG, "Default/empty GPIO config\n");
 	return NULL;
diff --git a/src/soc/intel/braswell/southcluster.c b/src/soc/intel/braswell/southcluster.c
index 6eb61c72af..05fa855dc6 100644
--- a/src/soc/intel/braswell/southcluster.c
+++ b/src/soc/intel/braswell/southcluster.c
@@ -21,6 +21,7 @@
 #include <bootstate.h>
 #include <cbmem.h>
 #include "chip.h"
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/x86/smm.h>
 #include <device/device.h>
@@ -457,7 +458,7 @@ static const struct pci_driver southcluster __pci_driver = {
 	.device		= LPC_DEVID,
 };
 
-int __attribute__((weak)) mainboard_get_spi_config(struct spi_config *cfg)
+int __weak mainboard_get_spi_config(struct spi_config *cfg)
 {
 	printk(BIOS_SPEW, "%s/%s ( 0x%p )\n",
 			__FILE__, __func__, (void *)cfg);
diff --git a/src/soc/intel/broadwell/romstage/romstage.c b/src/soc/intel/broadwell/romstage/romstage.c
index 4a1e67dded..025855b47b 100644
--- a/src/soc/intel/broadwell/romstage/romstage.c
+++ b/src/soc/intel/broadwell/romstage/romstage.c
@@ -20,6 +20,7 @@
 #include <arch/cbfs.h>
 #include <arch/early_variables.h>
 #include <bootmode.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cbfs.h>
 #include <cbmem.h>
@@ -123,4 +124,4 @@ asmlinkage void romstage_after_car(void)
 		;
 }
 
-void __attribute__((weak)) mainboard_pre_console_init(void) {}
+void __weak mainboard_pre_console_init(void) {}
diff --git a/src/soc/intel/cannonlake/chip.c b/src/soc/intel/cannonlake/chip.c
index 5fc3a55c26..49b98eecda 100644
--- a/src/soc/intel/cannonlake/chip.c
+++ b/src/soc/intel/cannonlake/chip.c
@@ -14,6 +14,7 @@
  */
 
 #include <chip.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <device/device.h>
 #include <device/pci.h>
@@ -307,7 +308,7 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd)
 }
 
 /* Mainboard GPIO Configuration */
-__attribute__((weak)) void mainboard_silicon_init_params(FSP_S_CONFIG *params)
+__weak void mainboard_silicon_init_params(FSP_S_CONFIG *params)
 {
 	printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
 }
diff --git a/src/soc/intel/cannonlake/romstage/romstage.c b/src/soc/intel/cannonlake/romstage/romstage.c
index c8cb927078..0459095261 100644
--- a/src/soc/intel/cannonlake/romstage/romstage.c
+++ b/src/soc/intel/cannonlake/romstage/romstage.c
@@ -19,6 +19,7 @@
 #include <chip.h>
 #include <cpu/x86/mtrr.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <fsp/util.h>
 #include <intelblocks/cse.h>
@@ -194,7 +195,7 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)
 	mainboard_memory_init_params(mupd);
 }
 
-__attribute__((weak)) void mainboard_memory_init_params(FSPM_UPD *mupd)
+__weak void mainboard_memory_init_params(FSPM_UPD *mupd)
 {
 	/* Do nothing */
 }
diff --git a/src/soc/intel/common/acpi_wake_source.c b/src/soc/intel/common/acpi_wake_source.c
index 4166801e70..e0d8bfb8fc 100644
--- a/src/soc/intel/common/acpi_wake_source.c
+++ b/src/soc/intel/common/acpi_wake_source.c
@@ -16,13 +16,14 @@
 #include <arch/acpi.h>
 #include <bootstate.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <soc/nvs.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include "acpi.h"
 
-__attribute__((weak)) int soc_fill_acpi_wake(uint32_t *pm1, uint32_t **gpe0)
+__weak int soc_fill_acpi_wake(uint32_t *pm1, uint32_t **gpe0)
 {
 	return -1;
 }
diff --git a/src/soc/intel/common/block/acpi/acpi.c b/src/soc/intel/common/block/acpi/acpi.c
index bf4003d575..02ab886ac0 100644
--- a/src/soc/intel/common/block/acpi/acpi.c
+++ b/src/soc/intel/common/block/acpi/acpi.c
@@ -18,6 +18,7 @@
 #include <arch/smp/mpspec.h>
 #include <bootstate.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <cpu/intel/reset.h>
 #include <cpu/intel/turbo.h>
 #include <cpu/x86/msr.h>
@@ -100,7 +101,7 @@ unsigned long acpi_fill_madt(unsigned long current)
 	return acpi_madt_irq_overrides(current);
 }
 
-__attribute__ ((weak)) void soc_fill_fadt(acpi_fadt_t *fadt)
+__weak void soc_fill_fadt(acpi_fadt_t *fadt)
 {
 }
 
@@ -173,7 +174,7 @@ unsigned long southbridge_write_acpi_tables(device_t device,
 	return acpi_write_hpet(device, current, rsdp);
 }
 
-__attribute__ ((weak))
+__weak
 uint32_t acpi_fill_soc_wake(uint32_t generic_pm1_en,
 			    const struct chipset_power_state *ps)
 {
@@ -219,7 +220,7 @@ static int acpi_fill_wake(uint32_t *pm1, uint32_t **gpe0)
 	return GPE0_REG_MAX;
 }
 
-__attribute__ ((weak)) void acpi_create_gnvs(struct global_nvs_t *gnvs)
+__weak void acpi_create_gnvs(struct global_nvs_t *gnvs)
 {
 }
 
@@ -401,7 +402,7 @@ void generate_t_state_entries(int core, int cores_per_package)
 	acpigen_write_TSS_package(entries, soc_tss_table);
 }
 
-__attribute__ ((weak)) void soc_power_states_generation(int core_id,
+__weak void soc_power_states_generation(int core_id,
 						int cores_per_package)
 {
 }
diff --git a/src/soc/intel/common/block/cpu/mp_init.c b/src/soc/intel/common/block/cpu/mp_init.c
index 085a34052e..23f2fb0d47 100644
--- a/src/soc/intel/common/block/cpu/mp_init.c
+++ b/src/soc/intel/common/block/cpu/mp_init.c
@@ -16,6 +16,7 @@
 #include <arch/io.h>
 #include <assert.h>
 #include <bootstate.h>
+#include <compiler.h>
 #include <cpu/cpu.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/msr.h>
@@ -30,12 +31,12 @@
 static const void *microcode_patch;
 
 /* SoC override function */
-__attribute__((weak)) void soc_core_init(device_t dev)
+__weak void soc_core_init(device_t dev)
 {
 	/* no-op */
 }
 
-__attribute__((weak)) void soc_init_cpus(struct bus *cpu_bus)
+__weak void soc_init_cpus(struct bus *cpu_bus)
 {
 	/* no-op */
 }
diff --git a/src/soc/intel/common/block/ebda/ebda.c b/src/soc/intel/common/block/ebda/ebda.c
index d16ad6e4c0..41c77a8f2c 100644
--- a/src/soc/intel/common/block/ebda/ebda.c
+++ b/src/soc/intel/common/block/ebda/ebda.c
@@ -14,6 +14,7 @@
  */
 
 #include <arch/ebda.h>
+#include <compiler.h>
 #include <intelblocks/ebda.h>
 #include <string.h>
 
@@ -24,7 +25,7 @@
  */
 
 /* Fill up EBDA structure inside Mainboard directory */
-__attribute__((weak)) void create_mainboard_ebda(struct ebda_config *cfg)
+__weak void create_mainboard_ebda(struct ebda_config *cfg)
 {
 	/* no-op */
 }
diff --git a/src/soc/intel/common/block/graphics/graphics.c b/src/soc/intel/common/block/graphics/graphics.c
index dcf8200250..ddea99fedb 100644
--- a/src/soc/intel/common/block/graphics/graphics.c
+++ b/src/soc/intel/common/block/graphics/graphics.c
@@ -14,6 +14,7 @@
  * GNU General Public License for more details.
  */
 
+#include <compiler.h>
 #include <console/console.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
@@ -21,7 +22,7 @@
 #include <soc/pci_devs.h>
 
 /* SoC Overrides */
-__attribute__((weak)) void graphics_soc_init(struct device *dev)
+__weak void graphics_soc_init(struct device *dev)
 {
 	/*
 	 * User needs to implement SoC override in case wishes
diff --git a/src/soc/intel/common/block/gspi/gspi.c b/src/soc/intel/common/block/gspi/gspi.c
index 175fad8b24..c7e1c6af0c 100644
--- a/src/soc/intel/common/block/gspi/gspi.c
+++ b/src/soc/intel/common/block/gspi/gspi.c
@@ -17,6 +17,7 @@
 #include <arch/early_variables.h>
 #include <arch/io.h>
 #include <assert.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <delay.h>
 #include <device/device.h>
@@ -357,7 +358,7 @@ static int gspi_cs_change(const struct spi_slave *dev, enum cs_assert cs_assert)
 	return 0;
 }
 
-int __attribute__((weak)) gspi_get_soc_spi_cfg(unsigned int gspi_bus,
+int __weak gspi_get_soc_spi_cfg(unsigned int gspi_bus,
 						struct spi_cfg *cfg)
 {
 	cfg->clk_phase = SPI_CLOCK_PHASE_FIRST;
diff --git a/src/soc/intel/common/block/lpc/lpc.c b/src/soc/intel/common/block/lpc/lpc.c
index 079ecde624..c462d9daa0 100644
--- a/src/soc/intel/common/block/lpc/lpc.c
+++ b/src/soc/intel/common/block/lpc/lpc.c
@@ -14,6 +14,7 @@
  * GNU General Public License for more details.
  */
 
+#include <compiler.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
@@ -24,13 +25,13 @@
 /* SoC overrides */
 
 /* Common weak definition, needs to be implemented in each soc LPC driver. */
-__attribute__((weak)) void lpc_soc_init(struct device *dev)
+__weak void lpc_soc_init(struct device *dev)
 {
 	/* no-op */
 }
 
 /* Fill up LPC IO resource structure inside SoC directory */
-__attribute__((weak)) void pch_lpc_soc_fill_io_resources(struct device *dev)
+__weak void pch_lpc_soc_fill_io_resources(struct device *dev)
 {
 	/* no-op */
 }
diff --git a/src/soc/intel/common/block/pmc/pmc.c b/src/soc/intel/common/block/pmc/pmc.c
index d3fef5567c..c8e8026171 100644
--- a/src/soc/intel/common/block/pmc/pmc.c
+++ b/src/soc/intel/common/block/pmc/pmc.c
@@ -15,6 +15,7 @@
 
 #include <arch/acpi.h>
 #include <arch/io.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/x86/smm.h>
 #include <device/pci.h>
@@ -25,7 +26,7 @@
 /* SoC overrides */
 
 /* Fill up PMC resource structure inside SoC directory */
-__attribute__((weak)) int pmc_soc_get_resources(
+__weak int pmc_soc_get_resources(
 		struct pmc_resource_config *cfg)
 {
 	/* no-op */
@@ -33,7 +34,7 @@ __attribute__((weak)) int pmc_soc_get_resources(
 }
 
 /* SoC override PMC initialization */
-__attribute__((weak)) void pmc_soc_init(struct device *dev)
+__weak void pmc_soc_init(struct device *dev)
 {
 	/* no-op */
 }
diff --git a/src/soc/intel/common/block/pmc/pmclib.c b/src/soc/intel/common/block/pmc/pmclib.c
index cf87d05d07..38d41960ad 100644
--- a/src/soc/intel/common/block/pmc/pmclib.c
+++ b/src/soc/intel/common/block/pmc/pmclib.c
@@ -16,6 +16,7 @@
 #include <arch/early_variables.h>
 #include <arch/io.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <halt.h>
 #include <intelblocks/pmclib.h>
@@ -75,7 +76,7 @@ static void print_num_status_bits(int num_bits, uint32_t status,
 	}
 }
 
-__attribute__ ((weak)) uint32_t soc_get_smi_status(uint32_t generic_sts)
+__weak uint32_t soc_get_smi_status(uint32_t generic_sts)
 {
 	return generic_sts;
 }
@@ -84,7 +85,7 @@ __attribute__ ((weak)) uint32_t soc_get_smi_status(uint32_t generic_sts)
  * Set PMC register to know which state system should be after
  * power reapplied
  */
-__attribute__ ((weak)) void pmc_soc_restore_power_failure(void)
+__weak void pmc_soc_restore_power_failure(void)
 {
 	/*
 	 * SoC code should set PMC config register in order to set
@@ -332,7 +333,7 @@ void pmc_clear_all_gpe_status(void)
 	pmc_clear_gpi_gpe_status();
 }
 
-__attribute__ ((weak))
+__weak
 void soc_clear_pm_registers(uintptr_t pmc_bar)
 {
 }
@@ -351,7 +352,7 @@ void pmc_clear_prsts(void)
 	soc_clear_pm_registers(pmc_bar);
 }
 
-__attribute__ ((weak))
+__weak
 int soc_prev_sleep_state(const struct chipset_power_state *ps,
 			      int prev_sleep_state)
 {
diff --git a/src/soc/intel/common/block/rtc/rtc.c b/src/soc/intel/common/block/rtc/rtc.c
index 9e76768e65..cb97953557 100644
--- a/src/soc/intel/common/block/rtc/rtc.c
+++ b/src/soc/intel/common/block/rtc/rtc.c
@@ -13,6 +13,7 @@
  * GNU General Public License for more details.
  */
 
+#include <compiler.h>
 #include <intelblocks/pcr.h>
 #include <intelblocks/rtc.h>
 #include <soc/pcr_ids.h>
@@ -31,7 +32,7 @@ void enable_rtc_upper_bank(void)
 	pcr_or32(PID_RTC, PCR_RTC_CONF, PCR_RTC_CONF_UCMOS_EN);
 }
 
-__attribute__((weak)) int soc_get_rtc_failed(void)
+__weak int soc_get_rtc_failed(void)
 {
 	return 0;
 }
diff --git a/src/soc/intel/common/block/smm/smihandler.c b/src/soc/intel/common/block/smm/smihandler.c
index d492459dc8..d8ac2f3469 100644
--- a/src/soc/intel/common/block/smm/smihandler.c
+++ b/src/soc/intel/common/block/smm/smihandler.c
@@ -16,6 +16,7 @@
 
 #include <arch/hlt.h>
 #include <arch/io.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/x86/cache.h>
 #include <cpu/x86/smm.h>
@@ -40,18 +41,18 @@ static struct global_nvs_t *gnvs;
 /* SoC overrides. */
 
 /* Specific SOC SMI handler during ramstage finalize phase */
-__attribute__((weak)) void smihandler_soc_at_finalize(void)
+__weak void smihandler_soc_at_finalize(void)
 {
 	return;
 }
 
-__attribute__((weak)) int smihandler_soc_disable_busmaster(device_t dev)
+__weak int smihandler_soc_disable_busmaster(device_t dev)
 {
 	return 1;
 }
 
 /* SMI handlers that should be serviced in SCI mode too. */
-__attribute__((weak)) uint32_t smihandler_soc_get_sci_mask(void)
+__weak uint32_t smihandler_soc_get_sci_mask(void)
 {
 	return 0; /* No valid SCI mask for SMI handler */
 }
@@ -60,7 +61,7 @@ __attribute__((weak)) uint32_t smihandler_soc_get_sci_mask(void)
  * Needs to implement the mechanism to know if an illegal attempt
  * has been made to write to the BIOS area.
  */
-__attribute__((weak)) void smihandler_soc_check_illegal_access(
+__weak void smihandler_soc_check_illegal_access(
 	uint32_t tco_sts)
 {
 	return;
@@ -68,13 +69,13 @@ __attribute__((weak)) void smihandler_soc_check_illegal_access(
 
 /* Mainboard overrides. */
 
-__attribute__((weak)) void mainboard_smi_gpi_handler(
+__weak void mainboard_smi_gpi_handler(
 	const struct gpi_status *sts)
 {
 	return;
 }
 
-__attribute__((weak)) void mainboard_smi_espi_handler(void)
+__weak void mainboard_smi_espi_handler(void)
 {
 	return;
 }
diff --git a/src/soc/intel/common/block/sram/sram.c b/src/soc/intel/common/block/sram/sram.c
index 49367e196b..9028952286 100644
--- a/src/soc/intel/common/block/sram/sram.c
+++ b/src/soc/intel/common/block/sram/sram.c
@@ -14,13 +14,14 @@
  * GNU General Public License for more details.
  */
 
+#include <compiler.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <intelblocks/sram.h>
 #include <soc/iomap.h>
 
-__attribute__((weak)) void soc_sram_init(struct device *dev) { /* no-op */ }
+__weak void soc_sram_init(struct device *dev) { /* no-op */ }
 
 static void sram_read_resources(struct device *dev)
 {
diff --git a/src/soc/intel/common/block/systemagent/systemagent.c b/src/soc/intel/common/block/systemagent/systemagent.c
index 25b47737b1..54646c9595 100644
--- a/src/soc/intel/common/block/systemagent/systemagent.c
+++ b/src/soc/intel/common/block/systemagent/systemagent.c
@@ -15,6 +15,7 @@
 
 #include <arch/io.h>
 #include <cbmem.h>
+#include <compiler.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
@@ -25,25 +26,25 @@
 #include "systemagent_def.h"
 
 /* SoC override function */
-__attribute__((weak)) void soc_systemagent_init(struct device *dev)
+__weak void soc_systemagent_init(struct device *dev)
 {
 	/* no-op */
 }
 
-__attribute__((weak)) void soc_add_fixed_mmio_resources(struct device *dev,
+__weak void soc_add_fixed_mmio_resources(struct device *dev,
 		int *resource_cnt)
 {
 	/* no-op */
 }
 
-__attribute__((weak)) int soc_get_uncore_prmmr_base_and_mask(uint64_t *base,
+__weak int soc_get_uncore_prmmr_base_and_mask(uint64_t *base,
 		uint64_t *mask)
 {
 	/* return failure for this dummy API */
 	return -1;
 }
 
-__attribute__((weak)) size_t soc_reserved_mmio_size(void)
+__weak size_t soc_reserved_mmio_size(void)
 {
 	return 0;
 }
diff --git a/src/soc/intel/common/block/uart/uart.c b/src/soc/intel/common/block/uart/uart.c
index 9f26ef1718..cdbe56b519 100644
--- a/src/soc/intel/common/block/uart/uart.c
+++ b/src/soc/intel/common/block/uart/uart.c
@@ -14,6 +14,7 @@
  */
 
 #include <arch/acpi.h>
+#include <compiler.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_def.h>
@@ -45,7 +46,7 @@ void uart_common_init(device_t dev, uintptr_t baseaddr)
 	uart_lpss_init(baseaddr);
 }
 
-__attribute__((weak)) device_t pch_uart_get_debug_controller(void)
+__weak device_t pch_uart_get_debug_controller(void)
 {
 	/*
 	 * device_t can either be a pointer to struct device (e.g. ramstage) or
@@ -78,12 +79,12 @@ bool uart_debug_controller_is_initialized(void)
 
 #if ENV_RAMSTAGE
 
-__attribute__((weak)) void pch_uart_read_resources(struct device *dev)
+__weak void pch_uart_read_resources(struct device *dev)
 {
 	pci_dev_read_resources(dev);
 }
 
-__attribute__((weak)) bool pch_uart_init_debug_controller_on_resume(void)
+__weak bool pch_uart_init_debug_controller_on_resume(void)
 {
 	/* By default, do not initialize controller. */
 	return false;
diff --git a/src/soc/intel/common/block/xdci/xdci.c b/src/soc/intel/common/block/xdci/xdci.c
index 07093dfb5e..cc42f2c65c 100644
--- a/src/soc/intel/common/block/xdci/xdci.c
+++ b/src/soc/intel/common/block/xdci/xdci.c
@@ -15,13 +15,14 @@
  */
 
 #include <arch/io.h>
+#include <compiler.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <intelblocks/xdci.h>
 #include <security/vboot/vboot_common.h>
 
-__attribute__((weak)) void soc_xdci_init(struct device *dev) { /* no-op */ }
+__weak void soc_xdci_init(struct device *dev) { /* no-op */ }
 
 /* Only allow xDCI controller in developer mode if VBOOT is enabled */
 int xdci_can_enable(void)
diff --git a/src/soc/intel/common/block/xhci/xhci.c b/src/soc/intel/common/block/xhci/xhci.c
index e5a4f9b692..737c8cfe7e 100644
--- a/src/soc/intel/common/block/xhci/xhci.c
+++ b/src/soc/intel/common/block/xhci/xhci.c
@@ -14,13 +14,14 @@
  * GNU General Public License for more details.
  */
 
+#include <compiler.h>
 #include <device/device.h>
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <arch/io.h>
 #include <intelblocks/xhci.h>
 
-__attribute__((weak)) void soc_xhci_init(struct device *dev) { /* no-op */ }
+__weak void soc_xhci_init(struct device *dev) { /* no-op */ }
 
 static struct device_operations usb_xhci_ops = {
 	.read_resources		= &pci_dev_read_resources,
diff --git a/src/soc/intel/common/vbt.c b/src/soc/intel/common/vbt.c
index eba7d40430..3d8f2bffbe 100644
--- a/src/soc/intel/common/vbt.c
+++ b/src/soc/intel/common/vbt.c
@@ -14,6 +14,7 @@
  */
 
 #include <cbfs.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <arch/acpi.h>
 #include <bootmode.h>
@@ -23,7 +24,7 @@
 
 #define VBT_SIGNATURE 0x54425624
 
-__attribute__((weak))
+__weak
 const char *mainboard_vbt_filename(void)
 {
 	return "vbt.bin";
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 */
 }
diff --git a/src/soc/intel/fsp_baytrail/gpio.c b/src/soc/intel/fsp_baytrail/gpio.c
index 862e42b9fe..72cf158b21 100644
--- a/src/soc/intel/fsp_baytrail/gpio.c
+++ b/src/soc/intel/fsp_baytrail/gpio.c
@@ -14,6 +14,7 @@
  */
 
 #include <device/pci.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <soc/gpio.h>
 #include <soc/pmc.h>
@@ -245,7 +246,7 @@ void setup_soc_gpios(struct soc_gpio_config *config)
 
 }
 
-struct soc_gpio_config* __attribute__((weak)) mainboard_get_gpios(void)
+struct soc_gpio_config* __weak mainboard_get_gpios(void)
 {
 	printk(BIOS_DEBUG, "Default/empty GPIO config\n");
 	return NULL;
diff --git a/src/soc/intel/quark/gpio_i2c.c b/src/soc/intel/quark/gpio_i2c.c
index d5543b803c..1a9c5ae3bd 100644
--- a/src/soc/intel/quark/gpio_i2c.c
+++ b/src/soc/intel/quark/gpio_i2c.c
@@ -13,6 +13,7 @@
  * GNU General Public License for more details.
  */
 
+#include <compiler.h>
 #include <console/console.h>
 #include <delay.h>
 #include <device/device.h>
@@ -23,7 +24,7 @@
 #include <soc/ramstage.h>
 #include <soc/reg_access.h>
 
-__attribute__((weak)) void mainboard_gpio_i2c_init(device_t dev)
+__weak void mainboard_gpio_i2c_init(device_t dev)
 {
 	/* Initialize any of the GPIOs or I2C devices */
 	printk(BIOS_SPEW, "WEAK; mainboard_gpio_i2c_init\n");
diff --git a/src/soc/intel/skylake/acpi.c b/src/soc/intel/skylake/acpi.c
index 3d133f9266..914b9d51a3 100644
--- a/src/soc/intel/skylake/acpi.c
+++ b/src/soc/intel/skylake/acpi.c
@@ -23,6 +23,7 @@
 #include <arch/smp/mpspec.h>
 #include <cbmem.h>
 #include <chip.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/cpu.h>
 #include <cpu/x86/smm.h>
@@ -707,7 +708,7 @@ int soc_fill_acpi_wake(uint32_t *pm1, uint32_t **gpe0)
 	return GPE0_REG_MAX;
 }
 
-__attribute__((weak)) void acpi_mainboard_gnvs(global_nvs_t *gnvs)
+__weak void acpi_mainboard_gnvs(global_nvs_t *gnvs)
 {
 }
 
diff --git a/src/soc/intel/skylake/chip_fsp20.c b/src/soc/intel/skylake/chip_fsp20.c
index 054ed089dc..6e9181677e 100644
--- a/src/soc/intel/skylake/chip_fsp20.c
+++ b/src/soc/intel/skylake/chip_fsp20.c
@@ -20,6 +20,7 @@
 #include <fsp/api.h>
 #include <arch/acpi.h>
 #include <chip.h>
+#include <compiler.h>
 #include <bootstate.h>
 #include <console/console.h>
 #include <device/device.h>
@@ -346,7 +347,7 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd)
 }
 
 /* Mainboard GPIO Configuration */
-__attribute__((weak)) void mainboard_silicon_init_params(FSP_S_CONFIG *params)
+__weak void mainboard_silicon_init_params(FSP_S_CONFIG *params)
 {
 	printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
 }
diff --git a/src/soc/intel/skylake/romstage/romstage_fsp20.c b/src/soc/intel/skylake/romstage/romstage_fsp20.c
index 0b2d276a73..760dcc1e8c 100644
--- a/src/soc/intel/skylake/romstage/romstage_fsp20.c
+++ b/src/soc/intel/skylake/romstage/romstage_fsp20.c
@@ -18,6 +18,7 @@
 #include <arch/io.h>
 #include <arch/symbols.h>
 #include <assert.h>
+#include <compiler.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/msr.h>
 #include <cbmem.h>
@@ -295,7 +296,7 @@ void soc_update_memory_params_for_mma(FSP_M_CONFIG *memory_cfg,
 	memory_cfg->SaGv = 0x02;
 }
 
-__attribute__((weak)) void mainboard_memory_init_params(FSPM_UPD *mupd)
+__weak void mainboard_memory_init_params(FSPM_UPD *mupd)
 {
 	/* Do nothing */
 }