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65 lines
1.8 KiB
65 lines
1.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_X86_BOOT_H |
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#define _ASM_X86_BOOT_H |
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#include <asm/pgtable_types.h> |
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#include <uapi/asm/boot.h> |
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/* Physical address where kernel should be loaded. */ |
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#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \ |
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+ (CONFIG_PHYSICAL_ALIGN - 1)) \ |
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& ~(CONFIG_PHYSICAL_ALIGN - 1)) |
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/* Minimum kernel alignment, as a power of two */ |
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#ifdef CONFIG_X86_64 |
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# define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT |
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#else |
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# define MIN_KERNEL_ALIGN_LG2 (PAGE_SHIFT + THREAD_SIZE_ORDER) |
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#endif |
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#define MIN_KERNEL_ALIGN (_AC(1, UL) << MIN_KERNEL_ALIGN_LG2) |
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#if (CONFIG_PHYSICAL_ALIGN & (CONFIG_PHYSICAL_ALIGN-1)) || \ |
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(CONFIG_PHYSICAL_ALIGN < MIN_KERNEL_ALIGN) |
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# error "Invalid value for CONFIG_PHYSICAL_ALIGN" |
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#endif |
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#if defined(CONFIG_KERNEL_BZIP2) |
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# define BOOT_HEAP_SIZE 0x400000 |
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#elif defined(CONFIG_KERNEL_ZSTD) |
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/* |
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* Zstd needs to allocate the ZSTD_DCtx in order to decompress the kernel. |
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* The ZSTD_DCtx is ~160KB, so set the heap size to 192KB because it is a |
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* round number and to allow some slack. |
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*/ |
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# define BOOT_HEAP_SIZE 0x30000 |
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#else |
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# define BOOT_HEAP_SIZE 0x10000 |
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#endif |
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#ifdef CONFIG_X86_64 |
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# define BOOT_STACK_SIZE 0x4000 |
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# define BOOT_INIT_PGT_SIZE (6*4096) |
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# ifdef CONFIG_RANDOMIZE_BASE |
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/* |
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* Assuming all cross the 512GB boundary: |
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* 1 page for level4 |
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* (2+2)*4 pages for kernel, param, cmd_line, and randomized kernel |
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* 2 pages for first 2M (video RAM: CONFIG_X86_VERBOSE_BOOTUP). |
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* Total is 19 pages. |
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*/ |
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# ifdef CONFIG_X86_VERBOSE_BOOTUP |
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# define BOOT_PGT_SIZE (19*4096) |
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# else /* !CONFIG_X86_VERBOSE_BOOTUP */ |
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# define BOOT_PGT_SIZE (17*4096) |
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# endif |
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# else /* !CONFIG_RANDOMIZE_BASE */ |
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# define BOOT_PGT_SIZE BOOT_INIT_PGT_SIZE |
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# endif |
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#else /* !CONFIG_X86_64 */ |
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# define BOOT_STACK_SIZE 0x1000 |
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#endif |
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#endif /* _ASM_X86_BOOT_H */
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