1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_BOOT_H
3#define _ASM_X86_BOOT_H
4
5
6#include <asm/pgtable_types.h>
7#include <uapi/asm/boot.h>
8
9/* Physical address where kernel should be loaded. */
10#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
11 + (CONFIG_PHYSICAL_ALIGN - 1)) \
12 & ~(CONFIG_PHYSICAL_ALIGN - 1))
13
14/* Minimum kernel alignment, as a power of two */
15#ifdef CONFIG_X86_64
16# define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT
17#else
18# define MIN_KERNEL_ALIGN_LG2 (PAGE_SHIFT + THREAD_SIZE_ORDER)
19#endif
20#define MIN_KERNEL_ALIGN (_AC(1, UL) << MIN_KERNEL_ALIGN_LG2)
21
22#if (CONFIG_PHYSICAL_ALIGN & (CONFIG_PHYSICAL_ALIGN-1)) || \
23 (CONFIG_PHYSICAL_ALIGN < MIN_KERNEL_ALIGN)
24# error "Invalid value for CONFIG_PHYSICAL_ALIGN"
25#endif
26
27#ifdef CONFIG_KERNEL_BZIP2
28# define BOOT_HEAP_SIZE 0x400000
29#else /* !CONFIG_KERNEL_BZIP2 */
30# define BOOT_HEAP_SIZE 0x10000
31#endif
32
33#ifdef CONFIG_X86_64
34# define BOOT_STACK_SIZE 0x4000
35
36# define BOOT_INIT_PGT_SIZE (6*4096)
37# ifdef CONFIG_RANDOMIZE_BASE
38/*
39 * Assuming all cross the 512GB boundary:
40 * 1 page for level4
41 * (2+2)*4 pages for kernel, param, cmd_line, and randomized kernel
42 * 2 pages for first 2M (video RAM: CONFIG_X86_VERBOSE_BOOTUP).
43 * Total is 19 pages.
44 */
45# ifdef CONFIG_X86_VERBOSE_BOOTUP
46# define BOOT_PGT_SIZE (19*4096)
47# else /* !CONFIG_X86_VERBOSE_BOOTUP */
48# define BOOT_PGT_SIZE (17*4096)
49# endif
50# else /* !CONFIG_RANDOMIZE_BASE */
51# define BOOT_PGT_SIZE BOOT_INIT_PGT_SIZE
52# endif
53
54#else /* !CONFIG_X86_64 */
55# define BOOT_STACK_SIZE 0x1000
56#endif
57
58#endif /* _ASM_X86_BOOT_H */
59