| /* Copyright (C) 1991-2016, the Linux Kernel authors |
| * |
| * This source code is licensed under the GNU General Public License |
| * Version 2. See the file COPYING for more details. |
| * |
| * Part of this code originates from Linux kernel files: |
| * |
| * linux/arch/x86/include/uapi/asm/bootparam.h |
| * linux/arch/x86/include/uapi/asm/e820.h |
| * |
| * These files are missing copyright headers, but are supposed to be |
| * governed by the overall Linux copyright. |
| */ |
| |
| #pragma once |
| |
| #define E820MAX (128) |
| /* From Linux e820.h */ |
| #define E820NR 0x1e8 /* # entries in E820MAP */ |
| |
| #define E820_RAM 1 |
| #define E820_RESERVED 2 |
| #define E820_ACPI 3 |
| #define E820_NVS 4 |
| #define E820_UNUSABLE 5 |
| |
| struct e820entry { |
| uint64_t addr; /* start of memory segment */ |
| uint64_t size; /* size of memory segment */ |
| uint32_t type; /* type of memory segment */ |
| } __attribute__((packed)); |
| |
| struct e820map { |
| uint32_t nr_map; |
| struct e820entry map[E820MAX]; |
| }; |
| |
| /* from linux bootparam.h */ |
| |
| /* setup_data types */ |
| #define SETUP_NONE 0 |
| #define SETUP_E820_EXT 1 |
| #define SETUP_DTB 2 |
| #define SETUP_PCI 3 |
| #define SETUP_EFI 4 |
| |
| /* 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) |
| |
| //#include <linux/types.h> |
| //#include <linux/screen_info.h> |
| //#include <linux/apm_bios.h> |
| //#include <linux/edd.h> |
| //#include <asm/e820.h> |
| //#include <asm/ist.h> |
| //#include <video/edid.h> |
| |
| /* extensible setup data list node */ |
| struct setup_data { |
| uint64_t next; |
| uint32_t type; |
| uint32_t len; |
| uint8_t data[0]; |
| }; |
| |
| struct setup_header { |
| uint8_t setup_sects; |
| uint16_t root_flags; |
| uint32_t syssize; |
| uint16_t ram_size; |
| uint16_t vid_mode; |
| uint16_t root_dev; |
| uint16_t boot_flag; |
| uint16_t jump; |
| uint32_t header; |
| uint16_t version; |
| uint32_t realmode_swtch; |
| uint16_t start_sys; |
| uint16_t kernel_version; |
| uint8_t type_of_loader; |
| uint8_t loadflags; |
| uint16_t setup_move_size; |
| uint32_t code32_start; |
| uint32_t ramdisk_image; |
| uint32_t ramdisk_size; |
| uint32_t bootsect_kludge; |
| uint16_t heap_end_ptr; |
| uint8_t ext_loader_ver; |
| uint8_t ext_loader_type; |
| uint32_t cmd_line_ptr; |
| uint32_t initrd_addr_max; |
| uint32_t kernel_alignment; |
| uint8_t relocatable_kernel; |
| uint8_t min_alignment; |
| uint16_t xloadflags; |
| uint32_t cmdline_size; |
| uint32_t hardware_subarch; |
| uint64_t hardware_subarch_data; |
| uint32_t payload_offset; |
| uint32_t payload_length; |
| uint64_t setup_data; |
| uint64_t pref_address; |
| uint32_t init_size; |
| uint32_t handover_offset; |
| } __attribute__((packed)); |
| |
| struct sys_desc_table { |
| uint16_t length; |
| uint8_t table[14]; |
| }; |
| |
| /* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */ |
| struct olpc_ofw_header { |
| uint32_t ofw_magic; /* OFW signature */ |
| uint32_t ofw_version; |
| uint32_t cif_handler; /* callback into OFW */ |
| uint32_t irq_desc_table; |
| } __attribute__((packed)); |
| |
| struct efi_info { |
| uint32_t efi_loader_signature; |
| uint32_t efi_systab; |
| uint32_t efi_memdesc_size; |
| uint32_t efi_memdesc_version; |
| uint32_t efi_memmap; |
| uint32_t efi_memmap_size; |
| uint32_t efi_systab_hi; |
| uint32_t efi_memmap_hi; |
| }; |
| |
| /* The so-called "zeropage" */ |
| struct boot_params { |
| //struct screen_info screen_info; /* 0x000 */ |
| uint8_t screen_info[0x40]; |
| //struct apm_bios_info apm_bios_info; /* 0x040 */ |
| uint8_t apm_bios_info[0x14]; |
| uint8_t _pad2[4]; /* 0x054 */ |
| uint64_t tboot_addr; /* 0x058 */ |
| //struct ist_info ist_info; /* 0x060 */ |
| uint8_t ist_info[0x10]; |
| uint8_t _pad3[16]; /* 0x070 */ |
| uint8_t hd0_info[16]; /* obsolete! */ /* 0x080 */ |
| uint8_t hd1_info[16]; /* obsolete! */ /* 0x090 */ |
| //struct sys_desc_table sys_desc_table; /* 0x0a0 */ |
| uint8_t sys_desc_table[0x10]; |
| //struct olpc_ofw_header olpc_ofw_header; /* 0x0b0 */ |
| uint8_t olpc_ofs_header[0x10]; |
| uint32_t ext_ramdisk_image; /* 0x0c0 */ |
| uint32_t ext_ramdisk_size; /* 0x0c4 */ |
| uint32_t ext_cmd_line_ptr; /* 0x0c8 */ |
| uint8_t _pad4[116]; /* 0x0cc */ |
| //struct edid_info edid_info; /* 0x140 */ |
| uint8_t edid_info[0x1c0-0x140]; |
| //struct efi_info efi_info; /* 0x1c0 */ |
| uint8_t efi_info[0x20]; |
| uint32_t alt_mem_k; /* 0x1e0 */ |
| uint32_t scratch; /* Scratch field! */ /* 0x1e4 */ |
| uint8_t e820_entries; /* 0x1e8 */ |
| uint8_t eddbuf_entries; /* 0x1e9 */ |
| uint8_t edd_mbr_sig_buf_entries; /* 0x1ea */ |
| uint8_t kbd_status; /* 0x1eb */ |
| uint8_t _pad5[3]; /* 0x1ec */ |
| /* |
| * 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. |
| */ |
| uint8_t sentinel; /* 0x1ef */ |
| uint8_t _pad6[1]; /* 0x1f0 */ |
| struct setup_header hdr; /* setup header */ /* 0x1f1 */ |
| uint8_t _pad7[0x290-0x1f1-sizeof(struct setup_header)]; |
| uint32_t edd_mbr_sig_buffer[/*EDD_MBR_SIG_MAX*/ (0x2d0-0x290)/sizeof(uint32_t)]; /* 0x290 */ |
| struct e820entry e820_map[E820MAX]; /* 0x2d0 */ |
| uint8_t _pad8[48]; /* 0xcd0 */ |
| //struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */ |
| uint8_t eddbuf[0xeec-0xd00]; |
| uint8_t _pad9[276]; /* 0xeec */ |
| } __attribute__((packed)); |
| |
| enum { |
| X86_SUBARCH_PC = 0, |
| X86_SUBARCH_LGUEST, |
| X86_SUBARCH_XEN, |
| X86_SUBARCH_INTEL_MID, |
| X86_SUBARCH_CE4100, |
| X86_NR_SUBARCHS, |
| }; |
| |
| #include <parlib/assert.h> |
| |
| /* sorry, need this here. */ |
| static void do_not_call_bootparam_asserts(void) |
| { |
| parlib_static_assert(offsetof(struct boot_params, e820_map) == 0x2d0); |
| } |
