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Tom Rini83d290c2018-05-06 17:58:06 -04001/* SPDX-License-Identifier: GPL-2.0+ */
wdenk2262cfe2002-11-18 00:14:45 +00002/*
3 * (C) Copyright 2002
Albert ARIBAUDfa82f872011-08-04 18:45:45 +02004 * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
wdenk2262cfe2002-11-18 00:14:45 +00005 */
6
7#ifndef _ASM_ZIMAGE_H_
8#define _ASM_ZIMAGE_H_
9
Gabe Black69370d12011-12-05 12:09:26 +000010#include <asm/bootparam.h>
Gabe Black233dbc12011-12-05 12:09:24 +000011#include <asm/e820.h>
12
wdenk8bde7f72003-06-27 21:31:46 +000013/* linux i386 zImage/bzImage header. Offsets relative to
wdenk2262cfe2002-11-18 00:14:45 +000014 * the start of the image */
15
wdenk2262cfe2002-11-18 00:14:45 +000016#define HEAP_FLAG 0x80
17#define BIG_KERNEL_FLAG 0x01
18
19/* magic numbers */
20#define KERNEL_MAGIC 0xaa55
21#define KERNEL_V2_MAGIC 0x53726448
22#define COMMAND_LINE_MAGIC 0xA33F
23
24/* limits */
25#define BZIMAGE_MAX_SIZE 15*1024*1024 /* 15MB */
26#define ZIMAGE_MAX_SIZE 512*1024 /* 512k */
27#define SETUP_MAX_SIZE 32768
28
29#define SETUP_START_OFFSET 0x200
wdenk8bde7f72003-06-27 21:31:46 +000030#define BZIMAGE_LOAD_ADDR 0x100000
wdenk2262cfe2002-11-18 00:14:45 +000031#define ZIMAGE_LOAD_ADDR 0x10000
wdenk8bde7f72003-06-27 21:31:46 +000032
Simon Glass4f960232020-09-05 14:50:51 -060033/**
34 * load_zimage() - Load a zImage or bzImage
35 *
36 * This copies an image into the standard location ready for setup
37 *
38 * @image: Address of image to load
39 * @kernel_size: Size of kernel including setup block (or 0 if the kernel is
40 * new enough to have a 'syssize' value)
41 * @load_addressp: Returns the address where the kernel has been loaded
Heinrich Schuchardt185f8122022-01-19 18:05:50 +010042 * Return: address of setup block, or NULL if something went wrong
Simon Glass4f960232020-09-05 14:50:51 -060043 */
Gabe Black69370d12011-12-05 12:09:26 +000044struct boot_params *load_zimage(char *image, unsigned long kernel_size,
Simon Glass76539382014-10-10 08:21:56 -060045 ulong *load_addressp);
Simon Glass4f960232020-09-05 14:50:51 -060046
47/**
48 * setup_zimage() - Set up a loaded zImage or bzImage ready for booting
49 *
50 * @setup_base: Pointer to the boot parameters, typically at address
51 * DEFAULT_SETUP_BASE
52 * @cmd_line: Place to put the command line, or NULL to use the one in the setup
53 * block
54 * @initrd_addr: Address of the initial ramdisk, or 0 if none
55 * @initrd_size: Size of the initial ramdisk, or 0 if none
56 * @load_address: Address where the bzImage is moved before booting, either
57 * BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
58 * @cmdline_force: Address of 'override' command line, or 0 to use the one in
59 * the * setup block
Heinrich Schuchardt185f8122022-01-19 18:05:50 +010060 * Return: 0 (always)
Simon Glass4f960232020-09-05 14:50:51 -060061 */
Gabe Black69370d12011-12-05 12:09:26 +000062int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
Simon Glass4f960232020-09-05 14:50:51 -060063 ulong initrd_addr, ulong initrd_size, ulong cmdline_force);
64
wdenk2262cfe2002-11-18 00:14:45 +000065#endif