drivers/gpu/drm/i915/gt/uc/intel_gsc_binary_headers.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/i915/gt/uc/intel_gsc_binary_headers.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/i915/gt/uc/intel_gsc_binary_headers.h
Extension
.h
Size
2907 bytes
Lines
136
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct intel_gsc_version {
	u16 major;
	u16 minor;
	u16 hotfix;
	u16 build;
} __packed;

struct intel_gsc_partition {
	u32 offset;
	u32 size;
} __packed;

struct intel_gsc_layout_pointers {
	u8 rom_bypass_vector[16];

	/* size of pointers layout not including ROM bypass vector */
	u16 size;

	/*
	 * bit0: Backup copy of layout pointers exist
	 * bits1-15: reserved
	 */
	u8 flags;

	u8 reserved;

	u32 crc32;

	struct intel_gsc_partition datap;
	struct intel_gsc_partition boot1;
	struct intel_gsc_partition boot2;
	struct intel_gsc_partition boot3;
	struct intel_gsc_partition boot4;
	struct intel_gsc_partition boot5;
	struct intel_gsc_partition temp_pages;
} __packed;

/* Boot partition structures */
struct intel_gsc_bpdt_header {
	u32 signature;
#define INTEL_GSC_BPDT_HEADER_SIGNATURE 0x000055AA

	u16 descriptor_count; /* num of entries after the header */

	u8 version;
	u8 configuration;

	u32 crc32;

	u32 build_version;
	struct intel_gsc_version tool_version;
} __packed;

struct intel_gsc_bpdt_entry {
	/*
	 * Bits 0-15: BPDT entry type
	 * Bits 16-17: reserved
	 * Bit 18: code sub-partition
	 * Bits 19-31: reserved
	 */
	u32 type;
#define INTEL_GSC_BPDT_ENTRY_TYPE_MASK GENMASK(15, 0)
#define INTEL_GSC_BPDT_ENTRY_TYPE_GSC_RBE 0x1

	u32 sub_partition_offset; /* from the base of the BPDT header */
	u32 sub_partition_size;
} __packed;

/* Code partition directory (CPD) structures */
struct intel_gsc_cpd_header_v2 {
	u32 header_marker;
#define INTEL_GSC_CPD_HEADER_MARKER 0x44504324

	u32 num_of_entries;
	u8 header_version;
	u8 entry_version;
	u8 header_length; /* in bytes */
	u8 flags;
	u32 partition_name;
	u32 crc32;
} __packed;

struct intel_gsc_cpd_entry {
	u8 name[12];

	/*
	 * Bits 0-24: offset from the beginning of the code partition
	 * Bit 25: huffman compressed
	 * Bits 26-31: reserved
	 */

Annotation

Implementation Notes