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210 lines
6.3 KiB
210 lines
6.3 KiB
/****************************************************************************** |
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* elfnote.h |
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* |
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* Definitions used for the Xen ELF notes. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to |
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* deal in the Software without restriction, including without limitation the |
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
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* sell copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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* DEALINGS IN THE SOFTWARE. |
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* |
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* Copyright (c) 2006, Ian Campbell, XenSource Ltd. |
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*/ |
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#ifndef __XEN_PUBLIC_ELFNOTE_H__ |
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#define __XEN_PUBLIC_ELFNOTE_H__ |
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/* |
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* The notes should live in a SHT_NOTE segment and have "Xen" in the |
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* name field. |
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* |
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* Numeric types are either 4 or 8 bytes depending on the content of |
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* the desc field. |
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* |
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* LEGACY indicated the fields in the legacy __xen_guest string which |
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* this a note type replaces. |
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* |
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* String values (for non-legacy) are NULL terminated ASCII, also known |
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* as ASCIZ type. |
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*/ |
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/* |
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* NAME=VALUE pair (string). |
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*/ |
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#define XEN_ELFNOTE_INFO 0 |
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/* |
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* The virtual address of the entry point (numeric). |
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* |
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* LEGACY: VIRT_ENTRY |
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*/ |
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#define XEN_ELFNOTE_ENTRY 1 |
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/* The virtual address of the hypercall transfer page (numeric). |
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* |
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* LEGACY: HYPERCALL_PAGE. (n.b. legacy value is a physical page |
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* number not a virtual address) |
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*/ |
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#define XEN_ELFNOTE_HYPERCALL_PAGE 2 |
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/* The virtual address where the kernel image should be mapped (numeric). |
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* |
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* Defaults to 0. |
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* |
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* LEGACY: VIRT_BASE |
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*/ |
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#define XEN_ELFNOTE_VIRT_BASE 3 |
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/* |
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* The offset of the ELF paddr field from the acutal required |
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* pseudo-physical address (numeric). |
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* |
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* This is used to maintain backwards compatibility with older kernels |
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* which wrote __PAGE_OFFSET into that field. This field defaults to 0 |
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* if not present. |
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* |
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* LEGACY: ELF_PADDR_OFFSET. (n.b. legacy default is VIRT_BASE) |
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*/ |
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#define XEN_ELFNOTE_PADDR_OFFSET 4 |
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/* |
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* The version of Xen that we work with (string). |
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* |
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* LEGACY: XEN_VER |
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*/ |
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#define XEN_ELFNOTE_XEN_VERSION 5 |
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/* |
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* The name of the guest operating system (string). |
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* |
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* LEGACY: GUEST_OS |
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*/ |
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#define XEN_ELFNOTE_GUEST_OS 6 |
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/* |
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* The version of the guest operating system (string). |
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* |
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* LEGACY: GUEST_VER |
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*/ |
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#define XEN_ELFNOTE_GUEST_VERSION 7 |
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/* |
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* The loader type (string). |
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* |
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* LEGACY: LOADER |
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*/ |
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#define XEN_ELFNOTE_LOADER 8 |
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/* |
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* The kernel supports PAE (x86/32 only, string = "yes" or "no"). |
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* |
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* LEGACY: PAE (n.b. The legacy interface included a provision to |
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* indicate 'extended-cr3' support allowing L3 page tables to be |
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* placed above 4G. It is assumed that any kernel new enough to use |
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* these ELF notes will include this and therefore "yes" here is |
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* equivalent to "yes[entended-cr3]" in the __xen_guest interface. |
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*/ |
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#define XEN_ELFNOTE_PAE_MODE 9 |
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/* |
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* The features supported/required by this kernel (string). |
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* |
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* The string must consist of a list of feature names (as given in |
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* features.h, without the "XENFEAT_" prefix) separated by '|' |
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* characters. If a feature is required for the kernel to function |
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* then the feature name must be preceded by a '!' character. |
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* |
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* LEGACY: FEATURES |
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*/ |
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#define XEN_ELFNOTE_FEATURES 10 |
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/* |
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* The kernel requires the symbol table to be loaded (string = "yes" or "no") |
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* LEGACY: BSD_SYMTAB (n.b. The legacy treated the presence or absence |
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* of this string as a boolean flag rather than requiring "yes" or |
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* "no". |
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*/ |
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#define XEN_ELFNOTE_BSD_SYMTAB 11 |
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/* |
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* The lowest address the hypervisor hole can begin at (numeric). |
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* |
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* This must not be set higher than HYPERVISOR_VIRT_START. Its presence |
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* also indicates to the hypervisor that the kernel can deal with the |
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* hole starting at a higher address. |
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*/ |
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#define XEN_ELFNOTE_HV_START_LOW 12 |
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/* |
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* List of maddr_t-sized mask/value pairs describing how to recognize |
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* (non-present) L1 page table entries carrying valid MFNs (numeric). |
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*/ |
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#define XEN_ELFNOTE_L1_MFN_VALID 13 |
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/* |
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* Whether or not the guest supports cooperative suspend cancellation. |
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* This is a numeric value. |
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* |
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* Default is 0 |
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*/ |
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#define XEN_ELFNOTE_SUSPEND_CANCEL 14 |
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/* |
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* The (non-default) location the initial phys-to-machine map should be |
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* placed at by the hypervisor (Dom0) or the tools (DomU). |
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* The kernel must be prepared for this mapping to be established using |
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* large pages, despite such otherwise not being available to guests. |
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* The kernel must also be able to handle the page table pages used for |
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* this mapping not being accessible through the initial mapping. |
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* (Only x86-64 supports this at present.) |
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*/ |
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#define XEN_ELFNOTE_INIT_P2M 15 |
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/* |
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* Whether or not the guest can deal with being passed an initrd not |
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* mapped through its initial page tables. |
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*/ |
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#define XEN_ELFNOTE_MOD_START_PFN 16 |
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/* |
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* The features supported by this kernel (numeric). |
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* |
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* Other than XEN_ELFNOTE_FEATURES on pre-4.2 Xen, this note allows a |
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* kernel to specify support for features that older hypervisors don't |
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* know about. The set of features 4.2 and newer hypervisors will |
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* consider supported by the kernel is the combination of the sets |
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* specified through this and the string note. |
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* |
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* LEGACY: FEATURES |
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*/ |
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#define XEN_ELFNOTE_SUPPORTED_FEATURES 17 |
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/* |
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* Physical entry point into the kernel. |
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* |
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* 32bit entry point into the kernel. When requested to launch the |
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* guest kernel in a HVM container, Xen will use this entry point to |
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* launch the guest in 32bit protected mode with paging disabled. |
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* Ignored otherwise. |
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*/ |
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#define XEN_ELFNOTE_PHYS32_ENTRY 18 |
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/* |
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* The number of the highest elfnote defined. |
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*/ |
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#define XEN_ELFNOTE_MAX XEN_ELFNOTE_PHYS32_ENTRY |
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#endif /* __XEN_PUBLIC_ELFNOTE_H__ */
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