Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * EFI support for Xen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 1999 VA Linux Systems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (C) 1999-2002 Hewlett-Packard Co.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *	David Mosberger-Tang <davidm@hpl.hp.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *	Stephane Eranian <eranian@hpl.hp.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * Copyright (C) 2005-2008 Intel Co.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *	Fenghua Yu <fenghua.yu@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *	Bibo Mao <bibo.mao@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  *	Chandramouli Narayanan <mouli@linux.intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  *	Huang Ying <ying.huang@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * Copyright (C) 2011 Novell Co.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  *	Jan Beulich <JBeulich@suse.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  * Copyright (C) 2011-2012 Oracle Co.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  *	Liang Tang <liang.tang@oracle.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * Copyright (c) 2014 Oracle Co., Daniel Kiper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/bug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/efi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <xen/interface/xen.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <xen/interface/platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <xen/xen.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <xen/xen-ops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <asm/xen/hypercall.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define INIT_EFI_OP(name) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	{.cmd = XENPF_efi_runtime_call, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	 .u.efi_runtime_call.function = XEN_EFI_##name, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	 .u.efi_runtime_call.misc = 0}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define efi_data(op)	(op.u.efi_runtime_call)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) static efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	struct xen_platform_op op = INIT_EFI_OP(get_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	if (tm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_time.time));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 		memcpy(tm, &efi_data(op).u.get_time.time, sizeof(*tm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	if (tc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		tc->resolution = efi_data(op).u.get_time.resolution;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		tc->accuracy = efi_data(op).u.get_time.accuracy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		tc->sets_to_zero = !!(efi_data(op).misc &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 				      XEN_EFI_GET_TIME_SET_CLEARS_NS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) static efi_status_t xen_efi_set_time(efi_time_t *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	struct xen_platform_op op = INIT_EFI_OP(set_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_time));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	memcpy(&efi_data(op).u.set_time, tm, sizeof(*tm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) static efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 					    efi_bool_t *pending,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 					    efi_time_t *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	struct xen_platform_op op = INIT_EFI_OP(get_wakeup_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	if (tm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_wakeup_time));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		memcpy(tm, &efi_data(op).u.get_wakeup_time, sizeof(*tm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	if (enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		*enabled = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_ENABLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	if (pending)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		*pending = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_PENDING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	struct xen_platform_op op = INIT_EFI_OP(set_wakeup_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_wakeup_time));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	if (enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		efi_data(op).misc = XEN_EFI_SET_WAKEUP_TIME_ENABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	if (tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		memcpy(&efi_data(op).u.set_wakeup_time, tm, sizeof(*tm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		efi_data(op).misc |= XEN_EFI_SET_WAKEUP_TIME_ENABLE_ONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 					 u32 *attr, unsigned long *data_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 					 void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	struct xen_platform_op op = INIT_EFI_OP(get_variable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	set_xen_guest_handle(efi_data(op).u.get_variable.name, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	BUILD_BUG_ON(sizeof(*vendor) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		     sizeof(efi_data(op).u.get_variable.vendor_guid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	memcpy(&efi_data(op).u.get_variable.vendor_guid, vendor, sizeof(*vendor));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	efi_data(op).u.get_variable.size = *data_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	set_xen_guest_handle(efi_data(op).u.get_variable.data, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	*data_size = efi_data(op).u.get_variable.size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	if (attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		*attr = efi_data(op).misc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 					      efi_char16_t *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 					      efi_guid_t *vendor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	struct xen_platform_op op = INIT_EFI_OP(get_next_variable_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	efi_data(op).u.get_next_variable_name.size = *name_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	set_xen_guest_handle(efi_data(op).u.get_next_variable_name.name, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	BUILD_BUG_ON(sizeof(*vendor) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		     sizeof(efi_data(op).u.get_next_variable_name.vendor_guid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	memcpy(&efi_data(op).u.get_next_variable_name.vendor_guid, vendor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	       sizeof(*vendor));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	*name_size = efi_data(op).u.get_next_variable_name.size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	memcpy(vendor, &efi_data(op).u.get_next_variable_name.vendor_guid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	       sizeof(*vendor));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 					 u32 attr, unsigned long data_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 					 void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	struct xen_platform_op op = INIT_EFI_OP(set_variable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	set_xen_guest_handle(efi_data(op).u.set_variable.name, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	efi_data(op).misc = attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	BUILD_BUG_ON(sizeof(*vendor) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		     sizeof(efi_data(op).u.set_variable.vendor_guid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	memcpy(&efi_data(op).u.set_variable.vendor_guid, vendor, sizeof(*vendor));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	efi_data(op).u.set_variable.size = data_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	set_xen_guest_handle(efi_data(op).u.set_variable.data, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 						u64 *remaining_space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 						u64 *max_variable_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	struct xen_platform_op op = INIT_EFI_OP(query_variable_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	efi_data(op).u.query_variable_info.attr = attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	*storage_space = efi_data(op).u.query_variable_info.max_store_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	*remaining_space = efi_data(op).u.query_variable_info.remain_store_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	*max_variable_size = efi_data(op).u.query_variable_info.max_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) static efi_status_t xen_efi_get_next_high_mono_count(u32 *count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	struct xen_platform_op op = INIT_EFI_OP(get_next_high_monotonic_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	*count = efi_data(op).misc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) static efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 				unsigned long count, unsigned long sg_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	struct xen_platform_op op = INIT_EFI_OP(update_capsule);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	set_xen_guest_handle(efi_data(op).u.update_capsule.capsule_header_array,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 			     capsules);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	efi_data(op).u.update_capsule.capsule_count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	efi_data(op).u.update_capsule.sg_list = sg_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) static efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 			unsigned long count, u64 *max_size, int *reset_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	struct xen_platform_op op = INIT_EFI_OP(query_capsule_capabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	set_xen_guest_handle(efi_data(op).u.query_capsule_capabilities.capsule_header_array,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 					capsules);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	efi_data(op).u.query_capsule_capabilities.capsule_count = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	if (HYPERVISOR_platform_op(&op) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	*max_size = efi_data(op).u.query_capsule_capabilities.max_capsule_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	*reset_type = efi_data(op).u.query_capsule_capabilities.reset_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	return efi_data(op).status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static void xen_efi_reset_system(int reset_type, efi_status_t status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 				 unsigned long data_size, efi_char16_t *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	switch (reset_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	case EFI_RESET_COLD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	case EFI_RESET_WARM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		xen_reboot(SHUTDOWN_reboot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	case EFI_RESET_SHUTDOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		xen_reboot(SHUTDOWN_poweroff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 		BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)  * Set XEN EFI runtime services function pointers. Other fields of struct efi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)  * e.g. efi.systab, will be set like normal EFI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) void __init xen_efi_runtime_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	efi.get_time			= xen_efi_get_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	efi.set_time			= xen_efi_set_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	efi.get_wakeup_time		= xen_efi_get_wakeup_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	efi.set_wakeup_time		= xen_efi_set_wakeup_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	efi.get_variable		= xen_efi_get_variable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	efi.get_next_variable		= xen_efi_get_next_variable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	efi.set_variable		= xen_efi_set_variable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	efi.set_variable_nonblocking	= xen_efi_set_variable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	efi.query_variable_info		= xen_efi_query_variable_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	efi.query_variable_info_nonblocking = xen_efi_query_variable_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	efi.update_capsule		= xen_efi_update_capsule;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	efi.query_capsule_caps		= xen_efi_query_capsule_caps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	efi.get_next_high_mono_count	= xen_efi_get_next_high_mono_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	efi.reset_system		= xen_efi_reset_system;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) }