mb/prodrive/hermes: Define board settings in EEPROM

Hermes has an EEPROM with firmware configuration data. Add definitions
to read and verify the `board settings` from the EEPROM. Subsequent
commits will hook up these EEPROM settings.

Change-Id: Id86632192ae53fd6b0e4df5b26b5a0a81e972818
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48806
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h b/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h
index 95024b6ccd..d5a79cd9f9 100644
--- a/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h
+++ b/src/mainboard/prodrive/hermes/variants/baseboard/include/eeprom.h
@@ -18,6 +18,24 @@
 					.size = member_size(FSP_S_CONFIG, x)}
 #endif /* ENV_ROMSTAGE */
 
+__packed struct eeprom_board_settings {
+	uint32_t signature;
+	union {
+		struct {
+			uint8_t secureboot;
+			uint8_t primary_video;
+			uint8_t deep_sx_enabled;
+			uint8_t wake_on_usb;
+			uint8_t usb_powered_in_s5;
+			uint8_t power_state_after_g3;
+			uint8_t blue_rear_vref;
+			uint8_t internal_audio_connection;
+			uint8_t pxe_boot_capability;
+		};
+		uint8_t raw_settings[9];
+	};
+};
+
 typedef struct {
 	size_t offset;
 	size_t size;
@@ -25,3 +43,4 @@ typedef struct {
 
 bool read_write_config(void *blob, size_t read_offset, size_t write_offset, size_t size);
 int check_signature(const size_t offset, const uint64_t signature);
+struct eeprom_board_settings *get_board_settings(void);