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