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