firmware: google: Export coreboot table entries

Move types for coreboot table entries to <linux/coreboot.h>. Allows
drivers in other subsystems to use these structures.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Tzung-Bi Shih <tzungbi@kernel.org>
Acked-by: Julius Werner <jwerner@chromium.org>
Link: https://patch.msgid.link/20260217155836.96267-9-tzimmermann@suse.de

5 files changed, 78 insertions, 61 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 4a2d5e8f0f63..d0dfcfd15e59 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10753,6 +10753,7 @@ L:	chrome-platform@lists.linux.dev
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git
 F:	drivers/firmware/google/
+F:	include/linux/coreboot.h
 
 GOOGLE TENSOR SoC SUPPORT
 M:	Peter Griffin <peter.griffin@linaro.org>
diff --git a/drivers/firmware/google/coreboot_table.c b/drivers/firmware/google/coreboot_table.c
index a031d6fe6bc5..c769631ea15d 100644
--- a/drivers/firmware/google/coreboot_table.c
+++ b/drivers/firmware/google/coreboot_table.c
@@ -22,6 +22,16 @@
 
 #include "coreboot_table.h"
 
+/* Coreboot table header structure */
+struct coreboot_table_header {
+	char signature[4];
+	u32 header_bytes;
+	u32 header_checksum;
+	u32 table_bytes;
+	u32 table_checksum;
+	u32 table_entries;
+};
+
 #define CB_DEV(d) container_of(d, struct coreboot_device, dev)
 #define CB_DRV(d) container_of_const(d, struct coreboot_driver, drv)
 
diff --git a/drivers/firmware/google/coreboot_table.h b/drivers/firmware/google/coreboot_table.h
index 17e9e5c3f6e1..616ca3903e5c 100644
--- a/drivers/firmware/google/coreboot_table.h
+++ b/drivers/firmware/google/coreboot_table.h
@@ -12,67 +12,9 @@
 #ifndef __COREBOOT_TABLE_H
 #define __COREBOOT_TABLE_H
 
+#include <linux/coreboot.h>
 #include <linux/device.h>
 
-struct coreboot_device_id;
-
-/* Coreboot table header structure */
-struct coreboot_table_header {
-	char signature[4];
-	u32 header_bytes;
-	u32 header_checksum;
-	u32 table_bytes;
-	u32 table_checksum;
-	u32 table_entries;
-};
-
-/* List of coreboot entry structures that is used */
-/* Generic */
-struct coreboot_table_entry {
-	u32 tag;
-	u32 size;
-};
-
-/* Points to a CBMEM entry */
-struct lb_cbmem_ref {
-	u32 tag;
-	u32 size;
-
-	u64 cbmem_addr;
-};
-
-#define LB_TAG_CBMEM_ENTRY 0x31
-
-/* Corresponds to LB_TAG_CBMEM_ENTRY */
-struct lb_cbmem_entry {
-	u32 tag;
-	u32 size;
-
-	u64 address;
-	u32 entry_size;
-	u32 id;
-};
-
-/* Describes framebuffer setup by coreboot */
-struct lb_framebuffer {
-	u32 tag;
-	u32 size;
-
-	u64 physical_address;
-	u32 x_resolution;
-	u32 y_resolution;
-	u32 bytes_per_line;
-	u8  bits_per_pixel;
-	u8  red_mask_pos;
-	u8  red_mask_size;
-	u8  green_mask_pos;
-	u8  green_mask_size;
-	u8  blue_mask_pos;
-	u8  blue_mask_size;
-	u8  reserved_mask_pos;
-	u8  reserved_mask_size;
-};
-
 /* A device, additionally with information from coreboot. */
 struct coreboot_device {
 	struct device dev;
diff --git a/drivers/firmware/google/framebuffer-coreboot.c b/drivers/firmware/google/framebuffer-coreboot.c
index 81aa522edb1e..fab3f28655d3 100644
--- a/drivers/firmware/google/framebuffer-coreboot.c
+++ b/drivers/firmware/google/framebuffer-coreboot.c
@@ -21,8 +21,6 @@
 
 #include "coreboot_table.h"
 
-#define CB_TAG_FRAMEBUFFER 0x12
-
 #if defined(CONFIG_PCI)
 static bool framebuffer_pci_dev_is_enabled(struct pci_dev *pdev)
 {
diff --git a/include/linux/coreboot.h b/include/linux/coreboot.h
new file mode 100644
index 000000000000..48705b439c6e
--- /dev/null
+++ b/include/linux/coreboot.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * coreboot.h
+ *
+ * Coreboot device and driver interfaces.
+ *
+ * Copyright 2014 Gerd Hoffmann <kraxel@redhat.com>
+ * Copyright 2017 Google Inc.
+ * Copyright 2017 Samuel Holland <samuel@sholland.org>
+ */
+
+#ifndef _LINUX_COREBOOT_H
+#define _LINUX_COREBOOT_H
+
+#include <linux/types.h>
+
+/* List of coreboot entry structures that is used */
+
+#define CB_TAG_FRAMEBUFFER 0x12
+#define LB_TAG_CBMEM_ENTRY 0x31
+
+/* Generic */
+struct coreboot_table_entry {
+	u32 tag;
+	u32 size;
+};
+
+/* Points to a CBMEM entry */
+struct lb_cbmem_ref {
+	u32 tag;
+	u32 size;
+
+	u64 cbmem_addr;
+};
+
+/* Corresponds to LB_TAG_CBMEM_ENTRY */
+struct lb_cbmem_entry {
+	u32 tag;
+	u32 size;
+
+	u64 address;
+	u32 entry_size;
+	u32 id;
+};
+
+/* Describes framebuffer setup by coreboot */
+struct lb_framebuffer {
+	u32 tag;
+	u32 size;
+
+	u64 physical_address;
+	u32 x_resolution;
+	u32 y_resolution;
+	u32 bytes_per_line;
+	u8  bits_per_pixel;
+	u8  red_mask_pos;
+	u8  red_mask_size;
+	u8  green_mask_pos;
+	u8  green_mask_size;
+	u8  blue_mask_pos;
+	u8  blue_mask_size;
+	u8  reserved_mask_pos;
+	u8  reserved_mask_size;
+};
+
+#endif /* _LINUX_COREBOOT_H */