285 lines
8.3 KiB
C
285 lines
8.3 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
||
|
|
#ifndef _ASM_X86_BOOTPARAM_H
|
||
|
|
#define _ASM_X86_BOOTPARAM_H
|
||
|
|
|
||
|
|
/* setup_data/setup_indirect types */
|
||
|
|
#define SETUP_NONE 0
|
||
|
|
#define SETUP_E820_EXT 1
|
||
|
|
#define SETUP_DTB 2
|
||
|
|
#define SETUP_PCI 3
|
||
|
|
#define SETUP_EFI 4
|
||
|
|
#define SETUP_APPLE_PROPERTIES 5
|
||
|
|
#define SETUP_JAILHOUSE 6
|
||
|
|
#define SETUP_CC_BLOB 7
|
||
|
|
#define SETUP_IMA 8
|
||
|
|
#define SETUP_RNG_SEED 9
|
||
|
|
#define SETUP_ENUM_MAX SETUP_RNG_SEED
|
||
|
|
|
||
|
|
#define SETUP_INDIRECT (1<<31)
|
||
|
|
#define SETUP_TYPE_MAX (SETUP_ENUM_MAX | SETUP_INDIRECT)
|
||
|
|
|
||
|
|
/* ram_size flags */
|
||
|
|
#define RAMDISK_IMAGE_START_MASK 0x07FF
|
||
|
|
#define RAMDISK_PROMPT_FLAG 0x8000
|
||
|
|
#define RAMDISK_LOAD_FLAG 0x4000
|
||
|
|
|
||
|
|
/* loadflags */
|
||
|
|
#define LOADED_HIGH (1<<0)
|
||
|
|
#define KASLR_FLAG (1<<1)
|
||
|
|
#define QUIET_FLAG (1<<5)
|
||
|
|
#define KEEP_SEGMENTS (1<<6)
|
||
|
|
#define CAN_USE_HEAP (1<<7)
|
||
|
|
|
||
|
|
/* xloadflags */
|
||
|
|
#define XLF_KERNEL_64 (1<<0)
|
||
|
|
#define XLF_CAN_BE_LOADED_ABOVE_4G (1<<1)
|
||
|
|
#define XLF_EFI_HANDOVER_32 (1<<2)
|
||
|
|
#define XLF_EFI_HANDOVER_64 (1<<3)
|
||
|
|
#define XLF_EFI_KEXEC (1<<4)
|
||
|
|
#define XLF_5LEVEL (1<<5)
|
||
|
|
#define XLF_5LEVEL_ENABLED (1<<6)
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/screen_info.h>
|
||
|
|
#include <linux/apm_bios.h>
|
||
|
|
#include <linux/edd.h>
|
||
|
|
#include <asm/ist.h>
|
||
|
|
#include <video/edid.h>
|
||
|
|
|
||
|
|
/* extensible setup data list node */
|
||
|
|
struct setup_data {
|
||
|
|
__u64 next;
|
||
|
|
__u32 type;
|
||
|
|
__u32 len;
|
||
|
|
__u8 data[];
|
||
|
|
};
|
||
|
|
|
||
|
|
/* extensible setup indirect data node */
|
||
|
|
struct setup_indirect {
|
||
|
|
__u32 type;
|
||
|
|
__u32 reserved; /* Reserved, must be set to zero. */
|
||
|
|
__u64 len;
|
||
|
|
__u64 addr;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct setup_header {
|
||
|
|
__u8 setup_sects;
|
||
|
|
__u16 root_flags;
|
||
|
|
__u32 syssize;
|
||
|
|
__u16 ram_size;
|
||
|
|
__u16 vid_mode;
|
||
|
|
__u16 root_dev;
|
||
|
|
__u16 boot_flag;
|
||
|
|
__u16 jump;
|
||
|
|
__u32 header;
|
||
|
|
__u16 version;
|
||
|
|
__u32 realmode_swtch;
|
||
|
|
__u16 start_sys_seg;
|
||
|
|
__u16 kernel_version;
|
||
|
|
__u8 type_of_loader;
|
||
|
|
__u8 loadflags;
|
||
|
|
__u16 setup_move_size;
|
||
|
|
__u32 code32_start;
|
||
|
|
__u32 ramdisk_image;
|
||
|
|
__u32 ramdisk_size;
|
||
|
|
__u32 bootsect_kludge;
|
||
|
|
__u16 heap_end_ptr;
|
||
|
|
__u8 ext_loader_ver;
|
||
|
|
__u8 ext_loader_type;
|
||
|
|
__u32 cmd_line_ptr;
|
||
|
|
__u32 initrd_addr_max;
|
||
|
|
__u32 kernel_alignment;
|
||
|
|
__u8 relocatable_kernel;
|
||
|
|
__u8 min_alignment;
|
||
|
|
__u16 xloadflags;
|
||
|
|
__u32 cmdline_size;
|
||
|
|
__u32 hardware_subarch;
|
||
|
|
__u64 hardware_subarch_data;
|
||
|
|
__u32 payload_offset;
|
||
|
|
__u32 payload_length;
|
||
|
|
__u64 setup_data;
|
||
|
|
__u64 pref_address;
|
||
|
|
__u32 init_size;
|
||
|
|
__u32 handover_offset;
|
||
|
|
__u32 kernel_info_offset;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
struct sys_desc_table {
|
||
|
|
__u16 length;
|
||
|
|
__u8 table[14];
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */
|
||
|
|
struct olpc_ofw_header {
|
||
|
|
__u32 ofw_magic; /* OFW signature */
|
||
|
|
__u32 ofw_version;
|
||
|
|
__u32 cif_handler; /* callback into OFW */
|
||
|
|
__u32 irq_desc_table;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
struct efi_info {
|
||
|
|
__u32 efi_loader_signature;
|
||
|
|
__u32 efi_systab;
|
||
|
|
__u32 efi_memdesc_size;
|
||
|
|
__u32 efi_memdesc_version;
|
||
|
|
__u32 efi_memmap;
|
||
|
|
__u32 efi_memmap_size;
|
||
|
|
__u32 efi_systab_hi;
|
||
|
|
__u32 efi_memmap_hi;
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is the maximum number of entries in struct boot_params::e820_table
|
||
|
|
* (the zeropage), which is part of the x86 boot protocol ABI:
|
||
|
|
*/
|
||
|
|
#define E820_MAX_ENTRIES_ZEROPAGE 128
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The E820 memory region entry of the boot protocol ABI:
|
||
|
|
*/
|
||
|
|
struct boot_e820_entry {
|
||
|
|
__u64 addr;
|
||
|
|
__u64 size;
|
||
|
|
__u32 type;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Smallest compatible version of jailhouse_setup_data required by this kernel.
|
||
|
|
*/
|
||
|
|
#define JAILHOUSE_SETUP_REQUIRED_VERSION 1
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The boot loader is passing platform information via this Jailhouse-specific
|
||
|
|
* setup data structure.
|
||
|
|
*/
|
||
|
|
struct jailhouse_setup_data {
|
||
|
|
struct {
|
||
|
|
__u16 version;
|
||
|
|
__u16 compatible_version;
|
||
|
|
} __attribute__((packed)) hdr;
|
||
|
|
struct {
|
||
|
|
__u16 pm_timer_address;
|
||
|
|
__u16 num_cpus;
|
||
|
|
__u64 pci_mmconfig_base;
|
||
|
|
__u32 tsc_khz;
|
||
|
|
__u32 apic_khz;
|
||
|
|
__u8 standard_ioapic;
|
||
|
|
__u8 cpu_ids[255];
|
||
|
|
} __attribute__((packed)) v1;
|
||
|
|
struct {
|
||
|
|
__u32 flags;
|
||
|
|
} __attribute__((packed)) v2;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* IMA buffer setup data information from the previous kernel during kexec
|
||
|
|
*/
|
||
|
|
struct ima_setup_data {
|
||
|
|
__u64 addr;
|
||
|
|
__u64 size;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
/* The so-called "zeropage" */
|
||
|
|
struct boot_params {
|
||
|
|
struct screen_info screen_info; /* 0x000 */
|
||
|
|
struct apm_bios_info apm_bios_info; /* 0x040 */
|
||
|
|
__u8 _pad2[4]; /* 0x054 */
|
||
|
|
__u64 tboot_addr; /* 0x058 */
|
||
|
|
struct ist_info ist_info; /* 0x060 */
|
||
|
|
__u64 acpi_rsdp_addr; /* 0x070 */
|
||
|
|
__u8 _pad3[8]; /* 0x078 */
|
||
|
|
__u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
|
||
|
|
__u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
|
||
|
|
struct sys_desc_table sys_desc_table; /* obsolete! */ /* 0x0a0 */
|
||
|
|
struct olpc_ofw_header olpc_ofw_header; /* 0x0b0 */
|
||
|
|
__u32 ext_ramdisk_image; /* 0x0c0 */
|
||
|
|
__u32 ext_ramdisk_size; /* 0x0c4 */
|
||
|
|
__u32 ext_cmd_line_ptr; /* 0x0c8 */
|
||
|
|
__u8 _pad4[112]; /* 0x0cc */
|
||
|
|
__u32 cc_blob_address; /* 0x13c */
|
||
|
|
struct edid_info edid_info; /* 0x140 */
|
||
|
|
struct efi_info efi_info; /* 0x1c0 */
|
||
|
|
__u32 alt_mem_k; /* 0x1e0 */
|
||
|
|
__u32 scratch; /* Scratch field! */ /* 0x1e4 */
|
||
|
|
__u8 e820_entries; /* 0x1e8 */
|
||
|
|
__u8 eddbuf_entries; /* 0x1e9 */
|
||
|
|
__u8 edd_mbr_sig_buf_entries; /* 0x1ea */
|
||
|
|
__u8 kbd_status; /* 0x1eb */
|
||
|
|
__u8 secure_boot; /* 0x1ec */
|
||
|
|
__u8 _pad5[2]; /* 0x1ed */
|
||
|
|
/*
|
||
|
|
* The sentinel is set to a nonzero value (0xff) in header.S.
|
||
|
|
*
|
||
|
|
* A bootloader is supposed to only take setup_header and put
|
||
|
|
* it into a clean boot_params buffer. If it turns out that
|
||
|
|
* it is clumsy or too generous with the buffer, it most
|
||
|
|
* probably will pick up the sentinel variable too. The fact
|
||
|
|
* that this variable then is still 0xff will let kernel
|
||
|
|
* know that some variables in boot_params are invalid and
|
||
|
|
* kernel should zero out certain portions of boot_params.
|
||
|
|
*/
|
||
|
|
__u8 sentinel; /* 0x1ef */
|
||
|
|
__u8 _pad6[1]; /* 0x1f0 */
|
||
|
|
struct setup_header hdr; /* setup header */ /* 0x1f1 */
|
||
|
|
__u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
|
||
|
|
__u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
|
||
|
|
struct boot_e820_entry e820_table[E820_MAX_ENTRIES_ZEROPAGE]; /* 0x2d0 */
|
||
|
|
__u8 _pad8[48]; /* 0xcd0 */
|
||
|
|
struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
|
||
|
|
__u8 _pad9[276]; /* 0xeec */
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* enum x86_hardware_subarch - x86 hardware subarchitecture
|
||
|
|
*
|
||
|
|
* The x86 hardware_subarch and hardware_subarch_data were added as of the x86
|
||
|
|
* boot protocol 2.07 to help distinguish and support custom x86 boot
|
||
|
|
* sequences. This enum represents accepted values for the x86
|
||
|
|
* hardware_subarch. Custom x86 boot sequences (not X86_SUBARCH_PC) do not
|
||
|
|
* have or simply *cannot* make use of natural stubs like BIOS or EFI, the
|
||
|
|
* hardware_subarch can be used on the Linux entry path to revector to a
|
||
|
|
* subarchitecture stub when needed. This subarchitecture stub can be used to
|
||
|
|
* set up Linux boot parameters or for special care to account for nonstandard
|
||
|
|
* handling of page tables.
|
||
|
|
*
|
||
|
|
* These enums should only ever be used by x86 code, and the code that uses
|
||
|
|
* it should be well contained and compartmentalized.
|
||
|
|
*
|
||
|
|
* KVM and Xen HVM do not have a subarch as these are expected to follow
|
||
|
|
* standard x86 boot entries. If there is a genuine need for "hypervisor" type
|
||
|
|
* that should be considered separately in the future. Future guest types
|
||
|
|
* should seriously consider working with standard x86 boot stubs such as
|
||
|
|
* the BIOS or EFI boot stubs.
|
||
|
|
*
|
||
|
|
* WARNING: this enum is only used for legacy hacks, for platform features that
|
||
|
|
* are not easily enumerated or discoverable. You should not ever use
|
||
|
|
* this for new features.
|
||
|
|
*
|
||
|
|
* @X86_SUBARCH_PC: Should be used if the hardware is enumerable using standard
|
||
|
|
* PC mechanisms (PCI, ACPI) and doesn't need a special boot flow.
|
||
|
|
* @X86_SUBARCH_LGUEST: Used for x86 hypervisor demo, lguest, deprecated
|
||
|
|
* @X86_SUBARCH_XEN: Used for Xen guest types which follow the PV boot path,
|
||
|
|
* which start at asm startup_xen() entry point and later jump to the C
|
||
|
|
* xen_start_kernel() entry point. Both domU and dom0 type of guests are
|
||
|
|
* currently supported through this PV boot path.
|
||
|
|
* @X86_SUBARCH_INTEL_MID: Used for Intel MID (Mobile Internet Device) platform
|
||
|
|
* systems which do not have the PCI legacy interfaces.
|
||
|
|
* @X86_SUBARCH_CE4100: Used for Intel CE media processor (CE4100) SoC
|
||
|
|
* for settop boxes and media devices, the use of a subarch for CE4100
|
||
|
|
* is more of a hack...
|
||
|
|
*/
|
||
|
|
enum x86_hardware_subarch {
|
||
|
|
X86_SUBARCH_PC = 0,
|
||
|
|
X86_SUBARCH_LGUEST,
|
||
|
|
X86_SUBARCH_XEN,
|
||
|
|
X86_SUBARCH_INTEL_MID,
|
||
|
|
X86_SUBARCH_CE4100,
|
||
|
|
X86_NR_SUBARCHS,
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* __ASSEMBLY__ */
|
||
|
|
|
||
|
|
#endif /* _ASM_X86_BOOTPARAM_H */
|