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273 lines
8.0 KiB
273 lines
8.0 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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#ifndef _ASM_X86_BOOTPARAM_H |
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#define _ASM_X86_BOOTPARAM_H |
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/* setup_data/setup_indirect types */ |
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#define SETUP_NONE 0 |
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#define SETUP_E820_EXT 1 |
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#define SETUP_DTB 2 |
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#define SETUP_PCI 3 |
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#define SETUP_EFI 4 |
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#define SETUP_APPLE_PROPERTIES 5 |
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#define SETUP_JAILHOUSE 6 |
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#define SETUP_INDIRECT (1<<31) |
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/* SETUP_INDIRECT | max(SETUP_*) */ |
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#define SETUP_TYPE_MAX (SETUP_INDIRECT | SETUP_JAILHOUSE) |
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/* ram_size flags */ |
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#define RAMDISK_IMAGE_START_MASK 0x07FF |
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#define RAMDISK_PROMPT_FLAG 0x8000 |
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#define RAMDISK_LOAD_FLAG 0x4000 |
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/* loadflags */ |
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#define LOADED_HIGH (1<<0) |
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#define KASLR_FLAG (1<<1) |
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#define QUIET_FLAG (1<<5) |
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#define KEEP_SEGMENTS (1<<6) |
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#define CAN_USE_HEAP (1<<7) |
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/* xloadflags */ |
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#define XLF_KERNEL_64 (1<<0) |
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#define XLF_CAN_BE_LOADED_ABOVE_4G (1<<1) |
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#define XLF_EFI_HANDOVER_32 (1<<2) |
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#define XLF_EFI_HANDOVER_64 (1<<3) |
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#define XLF_EFI_KEXEC (1<<4) |
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#define XLF_5LEVEL (1<<5) |
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#define XLF_5LEVEL_ENABLED (1<<6) |
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#ifndef __ASSEMBLY__ |
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#include <linux/types.h> |
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#include <linux/screen_info.h> |
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#include <linux/apm_bios.h> |
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#include <linux/edd.h> |
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#include <asm/ist.h> |
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#include <video/edid.h> |
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/* extensible setup data list node */ |
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struct setup_data { |
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__u64 next; |
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__u32 type; |
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__u32 len; |
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__u8 data[0]; |
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}; |
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/* extensible setup indirect data node */ |
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struct setup_indirect { |
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__u32 type; |
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__u32 reserved; /* Reserved, must be set to zero. */ |
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__u64 len; |
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__u64 addr; |
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}; |
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struct setup_header { |
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__u8 setup_sects; |
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__u16 root_flags; |
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__u32 syssize; |
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__u16 ram_size; |
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__u16 vid_mode; |
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__u16 root_dev; |
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__u16 boot_flag; |
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__u16 jump; |
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__u32 header; |
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__u16 version; |
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__u32 realmode_swtch; |
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__u16 start_sys_seg; |
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__u16 kernel_version; |
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__u8 type_of_loader; |
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__u8 loadflags; |
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__u16 setup_move_size; |
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__u32 code32_start; |
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__u32 ramdisk_image; |
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__u32 ramdisk_size; |
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__u32 bootsect_kludge; |
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__u16 heap_end_ptr; |
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__u8 ext_loader_ver; |
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__u8 ext_loader_type; |
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__u32 cmd_line_ptr; |
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__u32 initrd_addr_max; |
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__u32 kernel_alignment; |
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__u8 relocatable_kernel; |
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__u8 min_alignment; |
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__u16 xloadflags; |
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__u32 cmdline_size; |
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__u32 hardware_subarch; |
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__u64 hardware_subarch_data; |
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__u32 payload_offset; |
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__u32 payload_length; |
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__u64 setup_data; |
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__u64 pref_address; |
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__u32 init_size; |
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__u32 handover_offset; |
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__u32 kernel_info_offset; |
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} __attribute__((packed)); |
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struct sys_desc_table { |
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__u16 length; |
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__u8 table[14]; |
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}; |
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/* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */ |
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struct olpc_ofw_header { |
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__u32 ofw_magic; /* OFW signature */ |
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__u32 ofw_version; |
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__u32 cif_handler; /* callback into OFW */ |
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__u32 irq_desc_table; |
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} __attribute__((packed)); |
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struct efi_info { |
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__u32 efi_loader_signature; |
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__u32 efi_systab; |
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__u32 efi_memdesc_size; |
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__u32 efi_memdesc_version; |
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__u32 efi_memmap; |
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__u32 efi_memmap_size; |
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__u32 efi_systab_hi; |
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__u32 efi_memmap_hi; |
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}; |
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/* |
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* This is the maximum number of entries in struct boot_params::e820_table |
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* (the zeropage), which is part of the x86 boot protocol ABI: |
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*/ |
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#define E820_MAX_ENTRIES_ZEROPAGE 128 |
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/* |
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* The E820 memory region entry of the boot protocol ABI: |
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*/ |
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struct boot_e820_entry { |
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__u64 addr; |
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__u64 size; |
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__u32 type; |
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} __attribute__((packed)); |
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/* |
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* Smallest compatible version of jailhouse_setup_data required by this kernel. |
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*/ |
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#define JAILHOUSE_SETUP_REQUIRED_VERSION 1 |
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/* |
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* The boot loader is passing platform information via this Jailhouse-specific |
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* setup data structure. |
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*/ |
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struct jailhouse_setup_data { |
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struct { |
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__u16 version; |
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__u16 compatible_version; |
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} __attribute__((packed)) hdr; |
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struct { |
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__u16 pm_timer_address; |
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__u16 num_cpus; |
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__u64 pci_mmconfig_base; |
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__u32 tsc_khz; |
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__u32 apic_khz; |
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__u8 standard_ioapic; |
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__u8 cpu_ids[255]; |
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} __attribute__((packed)) v1; |
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struct { |
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__u32 flags; |
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} __attribute__((packed)) v2; |
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} __attribute__((packed)); |
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/* The so-called "zeropage" */ |
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struct boot_params { |
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struct screen_info screen_info; /* 0x000 */ |
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struct apm_bios_info apm_bios_info; /* 0x040 */ |
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__u8 _pad2[4]; /* 0x054 */ |
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__u64 tboot_addr; /* 0x058 */ |
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struct ist_info ist_info; /* 0x060 */ |
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__u64 acpi_rsdp_addr; /* 0x070 */ |
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__u8 _pad3[8]; /* 0x078 */ |
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__u8 hd0_info[16]; /* obsolete! */ /* 0x080 */ |
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__u8 hd1_info[16]; /* obsolete! */ /* 0x090 */ |
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struct sys_desc_table sys_desc_table; /* obsolete! */ /* 0x0a0 */ |
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struct olpc_ofw_header olpc_ofw_header; /* 0x0b0 */ |
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__u32 ext_ramdisk_image; /* 0x0c0 */ |
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__u32 ext_ramdisk_size; /* 0x0c4 */ |
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__u32 ext_cmd_line_ptr; /* 0x0c8 */ |
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__u8 _pad4[116]; /* 0x0cc */ |
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struct edid_info edid_info; /* 0x140 */ |
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struct efi_info efi_info; /* 0x1c0 */ |
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__u32 alt_mem_k; /* 0x1e0 */ |
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__u32 scratch; /* Scratch field! */ /* 0x1e4 */ |
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__u8 e820_entries; /* 0x1e8 */ |
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__u8 eddbuf_entries; /* 0x1e9 */ |
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__u8 edd_mbr_sig_buf_entries; /* 0x1ea */ |
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__u8 kbd_status; /* 0x1eb */ |
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__u8 secure_boot; /* 0x1ec */ |
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__u8 _pad5[2]; /* 0x1ed */ |
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/* |
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* The sentinel is set to a nonzero value (0xff) in header.S. |
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* |
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* A bootloader is supposed to only take setup_header and put |
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* it into a clean boot_params buffer. If it turns out that |
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* it is clumsy or too generous with the buffer, it most |
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* probably will pick up the sentinel variable too. The fact |
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* that this variable then is still 0xff will let kernel |
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* know that some variables in boot_params are invalid and |
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* kernel should zero out certain portions of boot_params. |
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*/ |
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__u8 sentinel; /* 0x1ef */ |
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__u8 _pad6[1]; /* 0x1f0 */ |
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struct setup_header hdr; /* setup header */ /* 0x1f1 */ |
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__u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)]; |
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__u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */ |
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struct boot_e820_entry e820_table[E820_MAX_ENTRIES_ZEROPAGE]; /* 0x2d0 */ |
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__u8 _pad8[48]; /* 0xcd0 */ |
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struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */ |
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__u8 _pad9[276]; /* 0xeec */ |
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} __attribute__((packed)); |
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/** |
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* enum x86_hardware_subarch - x86 hardware subarchitecture |
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* |
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* The x86 hardware_subarch and hardware_subarch_data were added as of the x86 |
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* boot protocol 2.07 to help distinguish and support custom x86 boot |
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* sequences. This enum represents accepted values for the x86 |
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* hardware_subarch. Custom x86 boot sequences (not X86_SUBARCH_PC) do not |
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* have or simply *cannot* make use of natural stubs like BIOS or EFI, the |
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* hardware_subarch can be used on the Linux entry path to revector to a |
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* subarchitecture stub when needed. This subarchitecture stub can be used to |
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* set up Linux boot parameters or for special care to account for nonstandard |
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* handling of page tables. |
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* |
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* These enums should only ever be used by x86 code, and the code that uses |
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* it should be well contained and compartamentalized. |
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* |
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* KVM and Xen HVM do not have a subarch as these are expected to follow |
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* standard x86 boot entries. If there is a genuine need for "hypervisor" type |
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* that should be considered separately in the future. Future guest types |
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* should seriously consider working with standard x86 boot stubs such as |
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* the BIOS or EFI boot stubs. |
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* |
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* WARNING: this enum is only used for legacy hacks, for platform features that |
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* are not easily enumerated or discoverable. You should not ever use |
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* this for new features. |
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* |
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* @X86_SUBARCH_PC: Should be used if the hardware is enumerable using standard |
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* PC mechanisms (PCI, ACPI) and doesn't need a special boot flow. |
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* @X86_SUBARCH_LGUEST: Used for x86 hypervisor demo, lguest, deprecated |
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* @X86_SUBARCH_XEN: Used for Xen guest types which follow the PV boot path, |
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* which start at asm startup_xen() entry point and later jump to the C |
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* xen_start_kernel() entry point. Both domU and dom0 type of guests are |
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* currently supportd through this PV boot path. |
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* @X86_SUBARCH_INTEL_MID: Used for Intel MID (Mobile Internet Device) platform |
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* systems which do not have the PCI legacy interfaces. |
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* @X86_SUBARCH_CE4100: Used for Intel CE media processor (CE4100) SoC |
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* for settop boxes and media devices, the use of a subarch for CE4100 |
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* is more of a hack... |
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*/ |
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enum x86_hardware_subarch { |
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X86_SUBARCH_PC = 0, |
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X86_SUBARCH_LGUEST, |
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X86_SUBARCH_XEN, |
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X86_SUBARCH_INTEL_MID, |
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X86_SUBARCH_CE4100, |
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X86_NR_SUBARCHS, |
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}; |
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#endif /* __ASSEMBLY__ */ |
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#endif /* _ASM_X86_BOOTPARAM_H */
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