mb/prodrive/hermes: Generalise `check_signature` function

Allow to specify which signature is to be checked.

Change-Id: Ica874b1c4283fdb8dbd702c34ccb3315a2cf160d
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48147
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

4 files changed, 6 insertions, 6 deletions

diff --git a/src/mainboard/prodrive/hermes/eeprom.c b/src/mainboard/prodrive/hermes/eeprom.c
index fee40a0783..25fde349e6 100644
--- a/src/mainboard/prodrive/hermes/eeprom.c
+++ b/src/mainboard/prodrive/hermes/eeprom.c
@@ -9,13 +9,13 @@
  * Check Signature in EEPROM (M24C32-FMN6TP)
  * If signature is there we assume that that the content is valid
  */
-int check_signature(u8 addr)
+int check_signature(u8 addr, const size_t offset, const uint64_t signature)
 {
 	u8 blob[8] = {0};
 
-	if (!read_write_config(addr, blob, EEPROM_OFFSET_FSP_SIGNATURE, 0, ARRAY_SIZE(blob))) {
+	if (!read_write_config(addr, blob, offset, 0, ARRAY_SIZE(blob))) {
 		/* Check signature */
-		if (*(uint64_t *)blob == FSP_UPD_SIGNATURE) {
+		if (*(uint64_t *)blob == signature) {
 			printk(BIOS_DEBUG, "CFG EEPROM: Signature valid.\n");
 			return 1;
 		}
diff --git a/src/mainboard/prodrive/hermes/ramstage.c b/src/mainboard/prodrive/hermes/ramstage.c
index e3dfffc2b3..b8b147d9b6 100644
--- a/src/mainboard/prodrive/hermes/ramstage.c
+++ b/src/mainboard/prodrive/hermes/ramstage.c
@@ -17,7 +17,7 @@ void mainboard_silicon_init_params(FSP_S_CONFIG *params)
 	params->SataLedEnable = 1;
 
 	/* Overwrite params */
-	if (!check_signature(I2C_ADDR_EEPROM))
+	if (!check_signature(I2C_ADDR_EEPROM, EEPROM_OFFSET_FSP_SIGNATURE, FSP_UPD_SIGNATURE))
 		return;
 
 	for (u8 i = 0; i <= ARRAY_SIZE(parmas_list); i++) {
diff --git a/src/mainboard/prodrive/hermes/romstage.c b/src/mainboard/prodrive/hermes/romstage.c
index 2bcd27ace0..6e88413f84 100644
--- a/src/mainboard/prodrive/hermes/romstage.c
+++ b/src/mainboard/prodrive/hermes/romstage.c
@@ -19,7 +19,7 @@ void mainboard_memory_init_params(FSPM_UPD *memupd)
 	cannonlake_memcfg_init(&memupd->FspmConfig, variant_memcfg_config());
 
 	/* Overwrite memupd */
-	if (!check_signature(I2C_ADDR_EEPROM))
+	if (!check_signature(I2C_ADDR_EEPROM, EEPROM_OFFSET_FSP_SIGNATURE, FSP_UPD_SIGNATURE))
 		return;
 
 	for (size_t i = 0; i < ARRAY_SIZE(parmas_list); i++) {
diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h b/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h
index 79fda3c755..85edbcf903 100644
--- a/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h
@@ -30,4 +30,4 @@ typedef struct {
 
 bool read_write_config(u8 addr, void *blob, size_t read_offset, size_t write_offset,
 		size_t size);
-int check_signature(u8 addr);
+int check_signature(u8 addr, const size_t offset, const uint64_t signature);