Documentation/riscv/boot-image-header.rst

2 Boot image header in RISC-V Linux
8 This document only describes the boot image header details for RISC-V Linux.
10 The following 64-byte header is present in decompressed Linux kernel image::
14 	u64 text_offset;	  /* Image load offset, little endian */
15 	u64 image_size;		  /* Effective Image size, little endian */
16 	u64 flags;		  /* kernel flags, little endian */
20 	u64 magic = 0x5643534952; /* Magic number, little endian, "RISCV" */
21 	u32 magic2 = 0x05435352;  /* Magic number 2, little endian, "RSC\x05" */
25 ARM64 header. Thus, both ARM64 & RISC-V header can be combined into one common
31 - This header is also reused to support EFI stub for RISC-V. EFI specification
37 - version field indicate header version number
47 - The "magic" field is deprecated as of version 0.2.  In a future
52 - In current header, the flags field has only one field.
58 - Image size is mandatory for boot loader to load kernel image. Booting will