From 53350d5c8d5e2a4e737ea77053b76ce375e8011c Mon Sep 17 00:00:00 2001
From: Maximilian Brune <maximilian.brune@9elements.com>
Date: Fri, 12 Dec 2025 01:06:45 +0100
Subject: [PATCH] include/acpi/acpi_apei.h: Add internal acpi_head_t struct

Each error source descriptor basically has these values at the
beginning. The error source descriptors are added in the follow up
patches.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Ic6873cb8cf7373435be3ce26382aa8ae37cd5938
Reviewed-on: https://review.coreboot.org/c/coreboot/+/90481
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
---
 src/include/acpi/acpi_apei.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/include/acpi/acpi_apei.h b/src/include/acpi/acpi_apei.h
index 3885994c25..81e574601b 100644
--- a/src/include/acpi/acpi_apei.h
+++ b/src/include/acpi/acpi_apei.h
@@ -91,6 +91,17 @@ typedef struct ghes_record {
 	u32 err_sts_blk_len;
 } __packed ghes_record_t;
 
+// internal struct only. It is common between all Error Source Descriptors.
+struct __packed apei_esd_header {
+	u16 type;
+	u16 source_id;
+	u16 reserved;
+	u8 flags;
+	u8 enabled;
+	u32 prealloc_record_count;
+	u32 max_sections_per_record;
+};
+
 /* BERT (Boot Error Record Table) */
 typedef struct acpi_bert {
 	acpi_header_t header;