| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 */ |