From 0361e1a865bc5029562f1344dfc7b2d6e0879aa8 Mon Sep 17 00:00:00 2001
From: Matt DeVillier <matt.devillier@gmail.com>
Date: Sun, 9 Nov 2025 18:20:44 -0600
Subject: [PATCH] drivers/intel/mipi_camera: Verify SSDB struct size at build
 time

Add a static assert ensuring `struct ssdb` stays 0x6C bytes, matching
the sensor descriptor in ACPI. This guards future edits from drifting
away from the documented layout without changing runtime behavior.

Change-Id: I2b4dfb86494d13525cbc6e6de4573ceb36f0b482
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/90183
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/drivers/intel/mipi_camera/ssdb.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/drivers/intel/mipi_camera/ssdb.h b/src/drivers/intel/mipi_camera/ssdb.h
index 68f234058c..318fb2e8c5 100644
--- a/src/drivers/intel/mipi_camera/ssdb.h
+++ b/src/drivers/intel/mipi_camera/ssdb.h
@@ -6,6 +6,8 @@
 #include <stdint.h>
 #include <uuid.h>
 
+#define SSDB_SIZE 108
+
 enum camera_device_type {
 	DEV_TYPE_SENSOR = 0,
 	DEV_TYPE_VCM,
@@ -83,5 +85,7 @@ struct intel_ssdb {
 	uint8_t reserved[13];			/* Pads SSDB out so the binary blob in ACPI is
 						   the same size as seen on other firmwares.*/
 } __packed;
+_Static_assert(sizeof(struct intel_ssdb) == SSDB_SIZE,
+		"SSDB structure size must match SSDB_SIZE");
 
 #endif