haswell: Make `copy_spd` a weak function

Instead of using function pointers, we can use weak functions. So, drop
the pointer from `romstage_params`, leaving `pei_data` as the only
remaining member. This will be cleaned up in a follow-up commit.

Change-Id: I3b17d21ea7a650734119a5cab4892fcb158b589d
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43105
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/mainboard/google/slippy/variants/falco/romstage.c

@@ -13,7 +13,7 @@
 #include "../../variant.h"
 
 /* Copy SPD data for on-board memory */
-static void copy_spd(struct pei_data *peid)
+void copy_spd(struct pei_data *peid)
 {
 	const int gpio_vector[] = {13, 9, 47, -1};
 	int spd_index = get_gpios(gpio_vector);
@@ -84,6 +84,4 @@ void variant_romstage_entry(struct romstage_params *rp)
 
 	memcpy(rp->pei_data->usb2_ports, usb2_ports, sizeof(usb2_ports));
 	memcpy(rp->pei_data->usb3_ports, usb3_ports, sizeof(usb3_ports));
-
-	rp->copy_spd = copy_spd;
 }

src/mainboard/google/slippy/variants/leon/romstage.c

@@ -12,7 +12,7 @@
 #include "../../variant.h"
 
 /* Copy SPD data for on-board memory */
-static void copy_spd(struct pei_data *peid)
+void copy_spd(struct pei_data *peid)
 {
 	const int gpio_vector[] = {13, 9, 47, -1};
 	int spd_index = get_gpios(gpio_vector);
@@ -78,6 +78,4 @@ void variant_romstage_entry(struct romstage_params *rp)
 
 	memcpy(rp->pei_data->usb2_ports, usb2_ports, sizeof(usb2_ports));
 	memcpy(rp->pei_data->usb3_ports, usb3_ports, sizeof(usb3_ports));
-
-	rp->copy_spd = copy_spd;
 }

src/mainboard/google/slippy/variants/peppy/romstage.c

@@ -14,7 +14,7 @@
 #include "../../variant.h"
 
 /* Copy SPD data for on-board memory */
-static void copy_spd(struct pei_data *peid)
+void copy_spd(struct pei_data *peid)
 {
 	const int gpio_vector[] = {13, 9, 47, -1};
 	int spd_index = get_gpios(gpio_vector);
@@ -95,6 +95,4 @@ void variant_romstage_entry(struct romstage_params *rp)
 
 	memcpy(rp->pei_data->usb2_ports, usb2_ports, sizeof(usb2_ports));
 	memcpy(rp->pei_data->usb3_ports, usb3_ports, sizeof(usb3_ports));
-
-	rp->copy_spd = copy_spd;
 }

src/mainboard/google/slippy/variants/wolf/romstage.c

@@ -13,7 +13,7 @@
 #include "../../variant.h"
 
 /* Copy SPD data for on-board memory */
-static void copy_spd(struct pei_data *peid)
+void copy_spd(struct pei_data *peid)
 {
 	const int gpio_vector[] = {13, 9, 47, -1};
 	int spd_index = get_gpios(gpio_vector);
@@ -82,6 +82,4 @@ void variant_romstage_entry(struct romstage_params *rp)
 
 	memcpy(rp->pei_data->usb2_ports, usb2_ports, sizeof(usb2_ports));
 	memcpy(rp->pei_data->usb3_ports, usb3_ports, sizeof(usb3_ports));
-
-	rp->copy_spd = copy_spd;
 }

src/mainboard/intel/baskingridge/romstage.c

@@ -114,7 +114,6 @@ void mainboard_romstage_entry(void)
 
 	struct romstage_params romstage_params = {
 		.pei_data = &pei_data,
-		.copy_spd = NULL,
 	};
 
 	/* Call into the real romstage main with this board's attributes. */

src/northbridge/intel/haswell/haswell.h

@@ -192,7 +192,6 @@ void intel_northbridge_haswell_finalize_smm(void);
 struct pei_data;
 struct romstage_params {
 	struct pei_data *pei_data;
-	void (*copy_spd)(struct pei_data *peid);
 };
 void romstage_common(const struct romstage_params *params);
 void mb_late_romstage_setup(void); /* optional */

src/northbridge/intel/haswell/raminit.h

@@ -5,6 +5,9 @@
 
 #include "pei_data.h"
 
+/* Optional function to copy SPD data for on-board memory */
+void copy_spd(struct pei_data *peid);
+
 void sdram_initialize(struct pei_data *pei_data);
 void setup_sdram_meminfo(struct pei_data *pei_data);
 int fixup_haswell_errata(void);

src/northbridge/intel/haswell/romstage.c

@@ -13,6 +13,11 @@
 #include <southbridge/intel/lynxpoint/pch.h>
 #include <southbridge/intel/lynxpoint/me.h>
 
+/* Copy SPD data for on-board memory */
+void __weak copy_spd(struct pei_data *peid)
+{
+}
+
 void __weak mb_late_romstage_setup(void)
 {
 }
@@ -53,8 +58,7 @@ void romstage_common(const struct romstage_params *params)
 
 	report_platform_info();
 
-	if (params->copy_spd != NULL)
-		params->copy_spd(params->pei_data);
+	copy_spd(params->pei_data);
 
 	sdram_initialize(params->pei_data);