1/* 2 * Permission is hereby granted, free of charge, to any person obtaining a copy 3 * of this software and associated documentation files (the "Software"), to 4 * deal in the Software without restriction, including without limitation the 5 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 6 * sell copies of the Software, and to permit persons to whom the Software is 7 * furnished to do so, subject to the following conditions: 8 * 9 * The above copyright notice and this permission notice shall be included in 10 * all copies or substantial portions of the Software. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 15 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 16 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 17 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 18 * DEALINGS IN THE SOFTWARE. 19 * 20 * Copyright (c) 2016, Citrix Systems, Inc. 21 */ 22 23#ifndef __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__ 24#define __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__ 25 26/* 27 * Start of day structure passed to PVH guests and to HVM guests in %ebx. 28 * 29 * NOTE: nothing will be loaded at physical address 0, so a 0 value in any 30 * of the address fields should be treated as not present. 31 * 32 * 0 +----------------+ 33 * | magic | Contains the magic value XEN_HVM_START_MAGIC_VALUE 34 * | | ("xEn3" with the 0x80 bit of the "E" set). 35 * 4 +----------------+ 36 * | version | Version of this structure. Current version is 0. New 37 * | | versions are guaranteed to be backwards-compatible. 38 * 8 +----------------+ 39 * | flags | SIF_xxx flags. 40 * 12 +----------------+ 41 * | nr_modules | Number of modules passed to the kernel. 42 * 16 +----------------+ 43 * | modlist_paddr | Physical address of an array of modules 44 * | | (layout of the structure below). 45 * 24 +----------------+ 46 * | cmdline_paddr | Physical address of the command line, 47 * | | a zero-terminated ASCII string. 48 * 32 +----------------+ 49 * | rsdp_paddr | Physical address of the RSDP ACPI data structure. 50 * 40 +----------------+ 51 * 52 * The layout of each entry in the module structure is the following: 53 * 54 * 0 +----------------+ 55 * | paddr | Physical address of the module. 56 * 8 +----------------+ 57 * | size | Size of the module in bytes. 58 * 16 +----------------+ 59 * | cmdline_paddr | Physical address of the command line, 60 * | | a zero-terminated ASCII string. 61 * 24 +----------------+ 62 * | reserved | 63 * 32 +----------------+ 64 * 65 * The address and sizes are always a 64bit little endian unsigned integer. 66 * 67 * NB: Xen on x86 will always try to place all the data below the 4GiB 68 * boundary. 69 */ 70#define XEN_HVM_START_MAGIC_VALUE 0x336ec578 71 72/* 73 * C representation of the x86/HVM start info layout. 74 * 75 * The canonical definition of this layout is above, this is just a way to 76 * represent the layout described there using C types. 77 */ 78struct hvm_start_info { 79 uint32_t magic; /* Contains the magic value 0x336ec578 */ 80 /* ("xEn3" with the 0x80 bit of the "E" set).*/ 81 uint32_t version; /* Version of this structure. */ 82 uint32_t flags; /* SIF_xxx flags. */ 83 uint32_t nr_modules; /* Number of modules passed to the kernel. */ 84 uint64_t modlist_paddr; /* Physical address of an array of */ 85 /* hvm_modlist_entry. */ 86 uint64_t cmdline_paddr; /* Physical address of the command line. */ 87 uint64_t rsdp_paddr; /* Physical address of the RSDP ACPI data */ 88 /* structure. */ 89}; 90 91struct hvm_modlist_entry { 92 uint64_t paddr; /* Physical address of the module. */ 93 uint64_t size; /* Size of the module in bytes. */ 94 uint64_t cmdline_paddr; /* Physical address of the command line. */ 95 uint64_t reserved; 96}; 97 98#endif /* __XEN_PUBLIC_ARCH_X86_HVM_START_INFO_H__ */ 99