| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * (C) Copyright 2002 |
| * Daniel Engström, Omicron Ceti AB, daniel@omicron.se |
| */ |
| |
| #ifndef _ASM_ZIMAGE_H_ |
| #define _ASM_ZIMAGE_H_ |
| |
| #include <asm/bootparam.h> |
| #include <asm/e820.h> |
| |
| /* linux i386 zImage/bzImage header. Offsets relative to |
| * the start of the image */ |
| |
| #define HEAP_FLAG 0x80 |
| #define BIG_KERNEL_FLAG 0x01 |
| |
| /* magic numbers */ |
| #define KERNEL_MAGIC 0xaa55 |
| #define KERNEL_V2_MAGIC 0x53726448 |
| #define COMMAND_LINE_MAGIC 0xA33F |
| |
| /* limits */ |
| #define BZIMAGE_MAX_SIZE 15*1024*1024 /* 15MB */ |
| #define ZIMAGE_MAX_SIZE 512*1024 /* 512k */ |
| #define SETUP_MAX_SIZE 32768 |
| |
| #define SETUP_START_OFFSET 0x200 |
| #define BZIMAGE_LOAD_ADDR 0x100000 |
| #define ZIMAGE_LOAD_ADDR 0x10000 |
| |
| /** |
| * load_zimage() - Load a zImage or bzImage |
| * |
| * This copies an image into the standard location ready for setup |
| * |
| * @image: Address of image to load |
| * @kernel_size: Size of kernel including setup block (or 0 if the kernel is |
| * new enough to have a 'syssize' value) |
| * @load_addressp: Returns the address where the kernel has been loaded |
| * @return address of setup block, or NULL if something went wrong |
| */ |
| struct boot_params *load_zimage(char *image, unsigned long kernel_size, |
| ulong *load_addressp); |
| |
| /** |
| * setup_zimage() - Set up a loaded zImage or bzImage ready for booting |
| * |
| * @setup_base: Pointer to the boot parameters, typically at address |
| * DEFAULT_SETUP_BASE |
| * @cmd_line: Place to put the command line, or NULL to use the one in the setup |
| * block |
| * @initrd_addr: Address of the initial ramdisk, or 0 if none |
| * @initrd_size: Size of the initial ramdisk, or 0 if none |
| * @load_address: Address where the bzImage is moved before booting, either |
| * BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR |
| * @cmdline_force: Address of 'override' command line, or 0 to use the one in |
| * the * setup block |
| * @return 0 (always) |
| */ |
| int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot, |
| ulong initrd_addr, ulong initrd_size, ulong cmdline_force); |
| |
| /** |
| * zimage_dump() - Dump the metadata of a zimage |
| * |
| * This shows all available information in a zimage that has been loaded. |
| * |
| * @base_ptr: Pointer to the boot parameters, typically at address |
| * DEFAULT_SETUP_BASE |
| */ |
| void zimage_dump(struct boot_params *base_ptr); |
| |
| void setup_video(struct screen_info *screen_info); |
| void setup_efi_info(struct efi_info *efi_info); |
| |
| #endif |
