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