lib/imd: move struct definitions to a new header file

Make IMD private structures definitions accessible by other units.

To test IMD API correctness there is a need to access its internal
structure. It is only possible when private implementation is visible
in testing scope.

Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: Iff87cc1990426bee6ac3cc1dfa6f85a787334976
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46216
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/src/include/imd_private.h b/src/include/imd_private.h
new file mode 100644
index 0000000000..43c3b7d50b
--- /dev/null
+++ b/src/include/imd_private.h
@@ -0,0 +1,38 @@
+#ifndef _IMD_PRIVATE_H_
+#define _IMD_PRIVATE_H_
+
+#include <commonlib/bsd/helpers.h>
+
+/* In-memory data structures. */
+struct imd_root_pointer {
+	uint32_t magic;
+	/* Relative to upper limit/offset. */
+	int32_t root_offset;
+} __packed;
+
+struct imd_entry {
+	uint32_t magic;
+	/* start is located relative to imd_root */
+	int32_t start_offset;
+	uint32_t size;
+	uint32_t id;
+} __packed;
+
+struct imd_root {
+	uint32_t max_entries;
+	uint32_t num_entries;
+	uint32_t flags;
+	uint32_t entry_align;
+	/* Used for fixing the size of an imd. Relative to the root. */
+	int32_t max_offset;
+	struct imd_entry entries[0];
+} __packed;
+
+#define IMD_ROOT_PTR_MAGIC  0xc0389481
+#define IMD_ENTRY_MAGIC  (~0xc0389481)
+#define SMALL_REGION_ID  CBMEM_ID_IMD_SMALL
+#define LIMIT_ALIGN 4096
+
+#define IMD_FLAG_LOCKED 1
+
+#endif /* _IMD_PRIVATE_H */