/* * 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
/* * Smallest compatible version of jailhouse_setup_data required by this kernel.
*/ #define JAILHOUSE_SETUP_REQUIRED_VERSION 1
/* 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/* __ASSEMBLER__ */
#endif/* _ASM_X86_BOOTPARAM_H */
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