1 // SPDX-License-Identifier: GPL-2.0
12 #include <xen/xen-ops.h>
19 #include "xen-ops.h"
49 	struct xen_platform_op op = {  in xen_efi_probe()  local
56 	union xenpf_efi_info *info = &op.u.firmware_info.u.efi_info;  in xen_efi_probe()
58 	if (!xen_initial_domain() || HYPERVISOR_platform_op(&op) < 0)  in xen_efi_probe()
64 	efi_systab_xen.tables = info->cfg.addr;  in xen_efi_probe()
65 	efi_systab_xen.nr_tables = info->cfg.nent;  in xen_efi_probe()
67 	op.cmd = XENPF_firmware_info;  in xen_efi_probe()
68 	op.u.firmware_info.type = XEN_FW_EFI_INFO;  in xen_efi_probe()
69 	op.u.firmware_info.index = XEN_FW_EFI_VENDOR;  in xen_efi_probe()
70 	info->vendor.bufsz = sizeof(vendor);  in xen_efi_probe()
71 	set_xen_guest_handle(info->vendor.name, vendor);  in xen_efi_probe()
73 	if (HYPERVISOR_platform_op(&op) == 0) {  in xen_efi_probe()
75 		efi_systab_xen.fw_revision = info->vendor.revision;  in xen_efi_probe()
79 	op.cmd = XENPF_firmware_info;  in xen_efi_probe()
80 	op.u.firmware_info.type = XEN_FW_EFI_INFO;  in xen_efi_probe()
81 	op.u.firmware_info.index = XEN_FW_EFI_VERSION;  in xen_efi_probe()
83 	if (HYPERVISOR_platform_op(&op) == 0)  in xen_efi_probe()
84 		efi_systab_xen.hdr.revision = info->version;  in xen_efi_probe()
86 	op.cmd = XENPF_firmware_info;  in xen_efi_probe()
87 	op.u.firmware_info.type = XEN_FW_EFI_INFO;  in xen_efi_probe()
88 	op.u.firmware_info.index = XEN_FW_EFI_RT_VERSION;  in xen_efi_probe()
90 	if (HYPERVISOR_platform_op(&op) == 0)  in xen_efi_probe()
91 		efi.runtime_version = info->version;  in xen_efi_probe()
97  * Determine whether we're in secure boot mode.
102 	enum efi_secureboot_mode mode;  in xen_efi_get_secureboot()  local
107 	mode = efi_get_secureboot_mode(efi.get_variable);  in xen_efi_get_secureboot()
108 	if (mode == efi_secureboot_mode_unknown) {  in xen_efi_get_secureboot()
112 	if (mode != efi_secureboot_mode_enabled)  in xen_efi_get_secureboot()
113 		return mode;  in xen_efi_get_secureboot()
115 	/* See if a user has put the shim into insecure mode. */  in xen_efi_get_secureboot()
141 	strscpy((char *)&boot_params->efi_info.efi_loader_signature, "Xen",  in xen_efi_init()
142 			sizeof(boot_params->efi_info.efi_loader_signature));  in xen_efi_init()
143 	boot_params->efi_info.efi_systab = (__u32)__pa(efi_systab_xen);  in xen_efi_init()
144 	boot_params->efi_info.efi_systab_hi = (__u32)(__pa(efi_systab_xen) >> 32);  in xen_efi_init()
146 	boot_params->secure_boot = xen_efi_get_secureboot();  in xen_efi_init()