drivers/firmware/efi/libstub/zboot-header.S

Source file repositories/reference/linux-study-clean/drivers/firmware/efi/libstub/zboot-header.S

File Facts

System: Linux kernel
Corpus path: drivers/firmware/efi/libstub/zboot-header.S
Extension: .S
Size: 4227 bytes
Lines: 178
Domain: Driver Families
Bucket: drivers/firmware
Inferred role: Driver Families: drivers/firmware
Status: atlas-only

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.

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

linux/pe.h

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#include <linux/pe.h>

#ifdef CONFIG_64BIT
	.set		.Lextra_characteristics, 0x0
	.set		.Lpe_opt_magic, IMAGE_NT_OPTIONAL_HDR64_MAGIC
#else
	.set		.Lextra_characteristics, IMAGE_FILE_32BIT_MACHINE
	.set		.Lpe_opt_magic, IMAGE_NT_OPTIONAL_HDR32_MAGIC
#endif

	.section	".head", "a"
	.globl		__efistub_efi_zboot_header
__efistub_efi_zboot_header:
.Ldoshdr:
	.long		IMAGE_DOS_SIGNATURE
	.ascii		"zimg"					// image type
	.long		__efistub__gzdata_start - .Ldoshdr	// payload offset
	.long		__efistub__gzdata_size - ZBOOT_SIZE_LEN	// payload size
	.long		0, 0					// reserved
	.asciz		COMP_TYPE				// compression type
	.org		.Ldoshdr + 0x38
	.long		LINUX_PE_MAGIC
	.long		.Lpehdr - .Ldoshdr			// PE header offset

.Lpehdr:
	.long		IMAGE_NT_SIGNATURE
	.short		MACHINE_TYPE
	.short		.Lsection_count
	.long		0
	.long		0
	.long		0
	.short		.Lsection_table - .Loptional_header
	.short		IMAGE_FILE_DEBUG_STRIPPED | \
			IMAGE_FILE_EXECUTABLE_IMAGE | \
			IMAGE_FILE_LINE_NUMS_STRIPPED |\
			.Lextra_characteristics

.Loptional_header:
	.short		.Lpe_opt_magic
	.byte		0, 0
	.long		_etext - .Lefi_header_end
	.long		__data_size
	.long		0
	.long		__efistub_efi_zboot_entry - .Ldoshdr
	.long		.Lefi_header_end - .Ldoshdr

#ifdef CONFIG_64BIT
	.quad		0
#else
	.long		_etext - .Ldoshdr, 0x0
#endif
	.long		4096
	.long		512
	.short		0, 0
	.short		LINUX_EFISTUB_MAJOR_VERSION	// MajorImageVersion
	.short		LINUX_EFISTUB_MINOR_VERSION	// MinorImageVersion
	.short		0, 0
	.long		0
	.long		_end - .Ldoshdr

	.long		.Lefi_header_end - .Ldoshdr
	.long		0
	.short		IMAGE_SUBSYSTEM_EFI_APPLICATION
	.short		IMAGE_DLLCHARACTERISTICS_NX_COMPAT
#ifdef CONFIG_64BIT
	.quad		0, 0, 0, 0
#else
	.long		0, 0, 0, 0
#endif
	.long		0

Annotation

Immediate include surface: `linux/pe.h`.
Atlas domain: Driver Families / drivers/firmware.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.