824 lines
19 KiB
C
824 lines
19 KiB
C
/*-
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* Copyright (c) 2004 Marcel Moolenaar
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* Copyright (c) 2001 Doug Rabson
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* Copyright (c) 2016, 2018 The FreeBSD Foundation
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* All rights reserved.
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*
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* Portions of this software were developed by Konstantin Belousov
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/efi.h>
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#include <sys/eventhandler.h>
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#include <sys/kernel.h>
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#include <sys/linker.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/msan.h>
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#include <sys/mutex.h>
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#include <sys/clock.h>
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#include <sys/proc.h>
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#include <sys/reboot.h>
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#include <sys/rwlock.h>
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#include <sys/sched.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <sys/uio.h>
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#include <sys/vmmeter.h>
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#include <machine/fpu.h>
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#include <machine/efi.h>
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#include <machine/metadata.h>
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#include <machine/vmparam.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <vm/vm_map.h>
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#ifdef DEV_ACPI
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#include <contrib/dev/acpica/include/acpi.h>
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#endif
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#define EFI_TABLE_ALLOC_MAX 0x800000
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static struct efi_systbl *efi_systbl;
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static eventhandler_tag efi_shutdown_tag;
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/*
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* The following pointers point to tables in the EFI runtime service data pages.
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* Care should be taken to make sure that we've properly entered the EFI runtime
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* environment (efi_enter()) before dereferencing them.
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*/
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static struct efi_cfgtbl *efi_cfgtbl;
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static struct efi_rt *efi_runtime;
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static int efi_status2err[25] = {
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0, /* EFI_SUCCESS */
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ENOEXEC, /* EFI_LOAD_ERROR */
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EINVAL, /* EFI_INVALID_PARAMETER */
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ENOSYS, /* EFI_UNSUPPORTED */
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EMSGSIZE, /* EFI_BAD_BUFFER_SIZE */
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EOVERFLOW, /* EFI_BUFFER_TOO_SMALL */
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EBUSY, /* EFI_NOT_READY */
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EIO, /* EFI_DEVICE_ERROR */
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EROFS, /* EFI_WRITE_PROTECTED */
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EAGAIN, /* EFI_OUT_OF_RESOURCES */
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EIO, /* EFI_VOLUME_CORRUPTED */
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ENOSPC, /* EFI_VOLUME_FULL */
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ENXIO, /* EFI_NO_MEDIA */
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ESTALE, /* EFI_MEDIA_CHANGED */
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ENOENT, /* EFI_NOT_FOUND */
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EACCES, /* EFI_ACCESS_DENIED */
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ETIMEDOUT, /* EFI_NO_RESPONSE */
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EADDRNOTAVAIL, /* EFI_NO_MAPPING */
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ETIMEDOUT, /* EFI_TIMEOUT */
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EDOOFUS, /* EFI_NOT_STARTED */
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EALREADY, /* EFI_ALREADY_STARTED */
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ECANCELED, /* EFI_ABORTED */
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EPROTO, /* EFI_ICMP_ERROR */
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EPROTO, /* EFI_TFTP_ERROR */
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EPROTO /* EFI_PROTOCOL_ERROR */
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};
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enum efi_table_type {
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TYPE_ESRT = 0,
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TYPE_PROP
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};
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static int efi_enter(void);
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static void efi_leave(void);
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int
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efi_status_to_errno(efi_status status)
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{
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u_long code;
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code = status & 0x3ffffffffffffffful;
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return (code < nitems(efi_status2err) ? efi_status2err[code] : EDOOFUS);
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}
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static struct mtx efi_lock;
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static SYSCTL_NODE(_hw, OID_AUTO, efi, CTLFLAG_RWTUN | CTLFLAG_MPSAFE, NULL,
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"EFI");
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static bool efi_poweroff = true;
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SYSCTL_BOOL(_hw_efi, OID_AUTO, poweroff, CTLFLAG_RWTUN, &efi_poweroff, 0,
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"If true, use EFI runtime services to power off in preference to ACPI");
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static bool
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efi_is_in_map(struct efi_md *map, int ndesc, int descsz, vm_offset_t addr)
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{
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struct efi_md *p;
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int i;
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for (i = 0, p = map; i < ndesc; i++, p = efi_next_descriptor(p,
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descsz)) {
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if ((p->md_attr & EFI_MD_ATTR_RT) == 0)
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continue;
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if (addr >= p->md_virt &&
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addr < p->md_virt + p->md_pages * EFI_PAGE_SIZE)
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return (true);
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}
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return (false);
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}
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static void
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efi_shutdown_final(void *dummy __unused, int howto)
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{
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/*
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* On some systems, ACPI S5 is missing or does not function properly.
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* When present, shutdown via EFI Runtime Services instead, unless
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* disabled.
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*/
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if ((howto & RB_POWEROFF) != 0 && efi_poweroff)
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(void)efi_reset_system(EFI_RESET_SHUTDOWN);
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}
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static int
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efi_init(void)
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{
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struct efi_map_header *efihdr;
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struct efi_md *map;
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struct efi_rt *rtdm;
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caddr_t kmdp;
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size_t efisz;
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int ndesc, rt_disabled;
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rt_disabled = 0;
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TUNABLE_INT_FETCH("efi.rt.disabled", &rt_disabled);
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if (rt_disabled == 1)
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return (0);
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mtx_init(&efi_lock, "efi", NULL, MTX_DEF);
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if (efi_systbl_phys == 0) {
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if (bootverbose)
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printf("EFI systbl not available\n");
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return (0);
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}
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efi_systbl = (struct efi_systbl *)efi_phys_to_kva(efi_systbl_phys);
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if (efi_systbl == NULL || efi_systbl->st_hdr.th_sig != EFI_SYSTBL_SIG) {
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efi_systbl = NULL;
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if (bootverbose)
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printf("EFI systbl signature invalid\n");
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return (0);
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}
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efi_cfgtbl = (efi_systbl->st_cfgtbl == 0) ? NULL :
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(struct efi_cfgtbl *)efi_systbl->st_cfgtbl;
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if (efi_cfgtbl == NULL) {
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if (bootverbose)
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printf("EFI config table is not present\n");
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}
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kmdp = preload_search_by_type("elf kernel");
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if (kmdp == NULL)
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kmdp = preload_search_by_type("elf64 kernel");
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efihdr = (struct efi_map_header *)preload_search_info(kmdp,
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MODINFO_METADATA | MODINFOMD_EFI_MAP);
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if (efihdr == NULL) {
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if (bootverbose)
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printf("EFI map is not present\n");
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return (0);
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}
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efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
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map = (struct efi_md *)((uint8_t *)efihdr + efisz);
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if (efihdr->descriptor_size == 0)
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return (ENOMEM);
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ndesc = efihdr->memory_size / efihdr->descriptor_size;
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if (!efi_create_1t1_map(map, ndesc, efihdr->descriptor_size)) {
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if (bootverbose)
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printf("EFI cannot create runtime map\n");
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return (ENOMEM);
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}
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efi_runtime = (efi_systbl->st_rt == 0) ? NULL :
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(struct efi_rt *)efi_systbl->st_rt;
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if (efi_runtime == NULL) {
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if (bootverbose)
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printf("EFI runtime services table is not present\n");
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efi_destroy_1t1_map();
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return (ENXIO);
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}
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#if defined(__aarch64__) || defined(__amd64__)
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/*
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* Some UEFI implementations have multiple implementations of the
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* RS->GetTime function. They switch from one we can only use early
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* in the boot process to one valid as a RunTime service only when we
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* call RS->SetVirtualAddressMap. As this is not always the case, e.g.
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* with an old loader.efi, check if the RS->GetTime function is within
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* the EFI map, and fail to attach if not.
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*/
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rtdm = (struct efi_rt *)efi_phys_to_kva((uintptr_t)efi_runtime);
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if (rtdm == NULL || !efi_is_in_map(map, ndesc, efihdr->descriptor_size,
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(vm_offset_t)rtdm->rt_gettime)) {
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if (bootverbose)
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printf(
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"EFI runtime services table has an invalid pointer\n");
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efi_runtime = NULL;
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efi_destroy_1t1_map();
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return (ENXIO);
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}
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#endif
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/*
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* We use SHUTDOWN_PRI_LAST - 1 to trigger after IPMI, but before ACPI.
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*/
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efi_shutdown_tag = EVENTHANDLER_REGISTER(shutdown_final,
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efi_shutdown_final, NULL, SHUTDOWN_PRI_LAST - 1);
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return (0);
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}
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static void
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efi_uninit(void)
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{
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/* Most likely disabled by tunable */
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if (efi_runtime == NULL)
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return;
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if (efi_shutdown_tag != NULL)
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EVENTHANDLER_DEREGISTER(shutdown_final, efi_shutdown_tag);
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efi_destroy_1t1_map();
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efi_systbl = NULL;
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efi_cfgtbl = NULL;
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efi_runtime = NULL;
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mtx_destroy(&efi_lock);
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}
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static int
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rt_ok(void)
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{
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if (efi_runtime == NULL)
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return (ENXIO);
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return (0);
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}
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static int
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efi_enter(void)
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{
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struct thread *td;
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pmap_t curpmap;
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int error;
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if (efi_runtime == NULL)
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return (ENXIO);
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td = curthread;
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curpmap = &td->td_proc->p_vmspace->vm_pmap;
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PMAP_LOCK(curpmap);
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mtx_lock(&efi_lock);
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fpu_kern_enter(td, NULL, FPU_KERN_NOCTX);
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error = efi_arch_enter();
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if (error != 0) {
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fpu_kern_leave(td, NULL);
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mtx_unlock(&efi_lock);
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PMAP_UNLOCK(curpmap);
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}
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return (error);
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}
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static void
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efi_leave(void)
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{
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struct thread *td;
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pmap_t curpmap;
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efi_arch_leave();
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curpmap = &curproc->p_vmspace->vm_pmap;
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td = curthread;
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fpu_kern_leave(td, NULL);
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mtx_unlock(&efi_lock);
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PMAP_UNLOCK(curpmap);
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}
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static int
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get_table(struct uuid *uuid, void **ptr)
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{
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struct efi_cfgtbl *ct;
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u_long count;
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int error;
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if (efi_cfgtbl == NULL || efi_systbl == NULL)
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return (ENXIO);
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error = efi_enter();
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if (error != 0)
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return (error);
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count = efi_systbl->st_entries;
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ct = efi_cfgtbl;
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while (count--) {
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if (!bcmp(&ct->ct_uuid, uuid, sizeof(*uuid))) {
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*ptr = ct->ct_data;
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efi_leave();
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return (0);
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}
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ct++;
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}
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efi_leave();
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return (ENOENT);
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}
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static int
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get_table_length(enum efi_table_type type, size_t *table_len, void **taddr)
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{
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switch (type) {
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case TYPE_ESRT:
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{
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struct efi_esrt_table *esrt = NULL;
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struct uuid uuid = EFI_TABLE_ESRT;
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uint32_t fw_resource_count = 0;
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size_t len = sizeof(*esrt);
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int error;
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void *buf;
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error = efi_get_table(&uuid, (void **)&esrt);
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if (error != 0)
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return (error);
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buf = malloc(len, M_TEMP, M_WAITOK);
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error = physcopyout((vm_paddr_t)esrt, buf, len);
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if (error != 0) {
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free(buf, M_TEMP);
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return (error);
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}
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/* Check ESRT version */
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if (((struct efi_esrt_table *)buf)->fw_resource_version !=
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ESRT_FIRMWARE_RESOURCE_VERSION) {
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free(buf, M_TEMP);
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return (ENODEV);
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}
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fw_resource_count = ((struct efi_esrt_table *)buf)->
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fw_resource_count;
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if (fw_resource_count > EFI_TABLE_ALLOC_MAX /
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sizeof(struct efi_esrt_entry_v1)) {
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free(buf, M_TEMP);
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return (ENOMEM);
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}
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len += fw_resource_count * sizeof(struct efi_esrt_entry_v1);
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*table_len = len;
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if (taddr != NULL)
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*taddr = esrt;
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free(buf, M_TEMP);
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return (0);
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}
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case TYPE_PROP:
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{
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struct uuid uuid = EFI_PROPERTIES_TABLE;
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struct efi_prop_table *prop;
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size_t len = sizeof(*prop);
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uint32_t prop_len;
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int error;
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void *buf;
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error = efi_get_table(&uuid, (void **)&prop);
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if (error != 0)
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return (error);
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buf = malloc(len, M_TEMP, M_WAITOK);
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error = physcopyout((vm_paddr_t)prop, buf, len);
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if (error != 0) {
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free(buf, M_TEMP);
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return (error);
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}
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prop_len = ((struct efi_prop_table *)buf)->length;
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if (prop_len > EFI_TABLE_ALLOC_MAX) {
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free(buf, M_TEMP);
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return (ENOMEM);
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}
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*table_len = prop_len;
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if (taddr != NULL)
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*taddr = prop;
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free(buf, M_TEMP);
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return (0);
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}
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}
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return (ENOENT);
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}
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|
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static int
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copy_table(struct uuid *uuid, void **buf, size_t buf_len, size_t *table_len)
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{
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static const struct known_table {
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struct uuid uuid;
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enum efi_table_type type;
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} tables[] = {
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{ EFI_TABLE_ESRT, TYPE_ESRT },
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{ EFI_PROPERTIES_TABLE, TYPE_PROP }
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};
|
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size_t table_idx;
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void *taddr;
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int rc;
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for (table_idx = 0; table_idx < nitems(tables); table_idx++) {
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if (!bcmp(&tables[table_idx].uuid, uuid, sizeof(*uuid)))
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break;
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}
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if (table_idx == nitems(tables))
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return (EINVAL);
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rc = get_table_length(tables[table_idx].type, table_len, &taddr);
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if (rc != 0)
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return rc;
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|
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/* return table length to userspace */
|
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if (buf == NULL)
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return (0);
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*buf = malloc(*table_len, M_TEMP, M_WAITOK);
|
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rc = physcopyout((vm_paddr_t)taddr, *buf, *table_len);
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return (rc);
|
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}
|
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|
|
static int efi_rt_handle_faults = EFI_RT_HANDLE_FAULTS_DEFAULT;
|
|
SYSCTL_INT(_machdep, OID_AUTO, efi_rt_handle_faults, CTLFLAG_RWTUN,
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&efi_rt_handle_faults, 0,
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"Call EFI RT methods with fault handler wrapper around");
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|
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static int
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efi_rt_arch_call_nofault(struct efirt_callinfo *ec)
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{
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|
|
|
switch (ec->ec_argcnt) {
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case 0:
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ec->ec_efi_status = ((register_t (*)(void))ec->ec_fptr)();
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break;
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case 1:
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ec->ec_efi_status = ((register_t (*)(register_t))ec->ec_fptr)
|
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(ec->ec_arg1);
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break;
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case 2:
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ec->ec_efi_status = ((register_t (*)(register_t, register_t))
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ec->ec_fptr)(ec->ec_arg1, ec->ec_arg2);
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break;
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case 3:
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ec->ec_efi_status = ((register_t (*)(register_t, register_t,
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register_t))ec->ec_fptr)(ec->ec_arg1, ec->ec_arg2,
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ec->ec_arg3);
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break;
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case 4:
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ec->ec_efi_status = ((register_t (*)(register_t, register_t,
|
|
register_t, register_t))ec->ec_fptr)(ec->ec_arg1,
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ec->ec_arg2, ec->ec_arg3, ec->ec_arg4);
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break;
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case 5:
|
|
ec->ec_efi_status = ((register_t (*)(register_t, register_t,
|
|
register_t, register_t, register_t))ec->ec_fptr)(
|
|
ec->ec_arg1, ec->ec_arg2, ec->ec_arg3, ec->ec_arg4,
|
|
ec->ec_arg5);
|
|
break;
|
|
default:
|
|
panic("efi_rt_arch_call: %d args", (int)ec->ec_argcnt);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
efi_call(struct efirt_callinfo *ecp)
|
|
{
|
|
int error;
|
|
|
|
error = efi_enter();
|
|
if (error != 0)
|
|
return (error);
|
|
error = efi_rt_handle_faults ? efi_rt_arch_call(ecp) :
|
|
efi_rt_arch_call_nofault(ecp);
|
|
efi_leave();
|
|
if (error == 0)
|
|
error = efi_status_to_errno(ecp->ec_efi_status);
|
|
else if (bootverbose)
|
|
printf("EFI %s call faulted, error %d\n", ecp->ec_name, error);
|
|
return (error);
|
|
}
|
|
|
|
#define EFI_RT_METHOD_PA(method) \
|
|
((uintptr_t)((struct efi_rt *)efi_phys_to_kva((uintptr_t) \
|
|
efi_runtime))->method)
|
|
|
|
static int
|
|
efi_get_time_locked(struct efi_tm *tm, struct efi_tmcap *tmcap)
|
|
{
|
|
struct efirt_callinfo ec;
|
|
int error;
|
|
|
|
EFI_TIME_OWNED();
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
bzero(&ec, sizeof(ec));
|
|
ec.ec_name = "rt_gettime";
|
|
ec.ec_argcnt = 2;
|
|
ec.ec_arg1 = (uintptr_t)tm;
|
|
ec.ec_arg2 = (uintptr_t)tmcap;
|
|
ec.ec_fptr = EFI_RT_METHOD_PA(rt_gettime);
|
|
error = efi_call(&ec);
|
|
if (error == 0)
|
|
kmsan_mark(tm, sizeof(*tm), KMSAN_STATE_INITED);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
get_time(struct efi_tm *tm)
|
|
{
|
|
struct efi_tmcap dummy;
|
|
int error;
|
|
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
EFI_TIME_LOCK();
|
|
/*
|
|
* UEFI spec states that the Capabilities argument to GetTime is
|
|
* optional, but some UEFI implementations choke when passed a NULL
|
|
* pointer. Pass a dummy efi_tmcap, even though we won't use it,
|
|
* to workaround such implementations.
|
|
*/
|
|
error = efi_get_time_locked(tm, &dummy);
|
|
EFI_TIME_UNLOCK();
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
get_waketime(uint8_t *enabled, uint8_t *pending, struct efi_tm *tm)
|
|
{
|
|
struct efirt_callinfo ec;
|
|
int error;
|
|
#ifdef DEV_ACPI
|
|
UINT32 acpiRtcEnabled;
|
|
#endif
|
|
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
|
|
EFI_TIME_LOCK();
|
|
bzero(&ec, sizeof(ec));
|
|
ec.ec_name = "rt_getwaketime";
|
|
ec.ec_argcnt = 3;
|
|
ec.ec_arg1 = (uintptr_t)enabled;
|
|
ec.ec_arg2 = (uintptr_t)pending;
|
|
ec.ec_arg3 = (uintptr_t)tm;
|
|
ec.ec_fptr = EFI_RT_METHOD_PA(rt_getwaketime);
|
|
error = efi_call(&ec);
|
|
EFI_TIME_UNLOCK();
|
|
|
|
#ifdef DEV_ACPI
|
|
if (error == 0) {
|
|
error = AcpiReadBitRegister(ACPI_BITREG_RT_CLOCK_ENABLE,
|
|
&acpiRtcEnabled);
|
|
if (ACPI_SUCCESS(error)) {
|
|
*enabled = *enabled && acpiRtcEnabled;
|
|
} else
|
|
error = EIO;
|
|
}
|
|
#endif
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
set_waketime(uint8_t enable, struct efi_tm *tm)
|
|
{
|
|
struct efirt_callinfo ec;
|
|
int error;
|
|
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
|
|
EFI_TIME_LOCK();
|
|
bzero(&ec, sizeof(ec));
|
|
ec.ec_name = "rt_setwaketime";
|
|
ec.ec_argcnt = 2;
|
|
ec.ec_arg1 = (uintptr_t)enable;
|
|
ec.ec_arg2 = (uintptr_t)tm;
|
|
ec.ec_fptr = EFI_RT_METHOD_PA(rt_setwaketime);
|
|
error = efi_call(&ec);
|
|
EFI_TIME_UNLOCK();
|
|
|
|
#ifdef DEV_ACPI
|
|
if (error == 0) {
|
|
error = AcpiWriteBitRegister(ACPI_BITREG_RT_CLOCK_ENABLE,
|
|
(enable != 0) ? 1 : 0);
|
|
if (ACPI_FAILURE(error))
|
|
error = EIO;
|
|
}
|
|
#endif
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
get_time_capabilities(struct efi_tmcap *tmcap)
|
|
{
|
|
struct efi_tm dummy;
|
|
int error;
|
|
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
EFI_TIME_LOCK();
|
|
error = efi_get_time_locked(&dummy, tmcap);
|
|
EFI_TIME_UNLOCK();
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
reset_system(enum efi_reset type)
|
|
{
|
|
struct efirt_callinfo ec;
|
|
|
|
switch (type) {
|
|
case EFI_RESET_COLD:
|
|
case EFI_RESET_WARM:
|
|
case EFI_RESET_SHUTDOWN:
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
bzero(&ec, sizeof(ec));
|
|
ec.ec_name = "rt_reset";
|
|
ec.ec_argcnt = 4;
|
|
ec.ec_arg1 = (uintptr_t)type;
|
|
ec.ec_arg2 = (uintptr_t)0;
|
|
ec.ec_arg3 = (uintptr_t)0;
|
|
ec.ec_arg4 = (uintptr_t)NULL;
|
|
ec.ec_fptr = EFI_RT_METHOD_PA(rt_reset);
|
|
return (efi_call(&ec));
|
|
}
|
|
|
|
static int
|
|
efi_set_time_locked(struct efi_tm *tm)
|
|
{
|
|
struct efirt_callinfo ec;
|
|
|
|
EFI_TIME_OWNED();
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
bzero(&ec, sizeof(ec));
|
|
ec.ec_name = "rt_settime";
|
|
ec.ec_argcnt = 1;
|
|
ec.ec_arg1 = (uintptr_t)tm;
|
|
ec.ec_fptr = EFI_RT_METHOD_PA(rt_settime);
|
|
return (efi_call(&ec));
|
|
}
|
|
|
|
static int
|
|
set_time(struct efi_tm *tm)
|
|
{
|
|
int error;
|
|
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
EFI_TIME_LOCK();
|
|
error = efi_set_time_locked(tm);
|
|
EFI_TIME_UNLOCK();
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
var_get(efi_char *name, struct uuid *vendor, uint32_t *attrib,
|
|
size_t *datasize, void *data)
|
|
{
|
|
struct efirt_callinfo ec;
|
|
int error;
|
|
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
bzero(&ec, sizeof(ec));
|
|
ec.ec_argcnt = 5;
|
|
ec.ec_name = "rt_getvar";
|
|
ec.ec_arg1 = (uintptr_t)name;
|
|
ec.ec_arg2 = (uintptr_t)vendor;
|
|
ec.ec_arg3 = (uintptr_t)attrib;
|
|
ec.ec_arg4 = (uintptr_t)datasize;
|
|
ec.ec_arg5 = (uintptr_t)data;
|
|
ec.ec_fptr = EFI_RT_METHOD_PA(rt_getvar);
|
|
error = efi_call(&ec);
|
|
if (error == 0)
|
|
kmsan_mark(data, *datasize, KMSAN_STATE_INITED);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
var_nextname(size_t *namesize, efi_char *name, struct uuid *vendor)
|
|
{
|
|
struct efirt_callinfo ec;
|
|
int error;
|
|
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
bzero(&ec, sizeof(ec));
|
|
ec.ec_argcnt = 3;
|
|
ec.ec_name = "rt_scanvar";
|
|
ec.ec_arg1 = (uintptr_t)namesize;
|
|
ec.ec_arg2 = (uintptr_t)name;
|
|
ec.ec_arg3 = (uintptr_t)vendor;
|
|
ec.ec_fptr = EFI_RT_METHOD_PA(rt_scanvar);
|
|
error = efi_call(&ec);
|
|
if (error == 0)
|
|
kmsan_mark(name, *namesize, KMSAN_STATE_INITED);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
var_set(efi_char *name, struct uuid *vendor, uint32_t attrib,
|
|
size_t datasize, void *data)
|
|
{
|
|
struct efirt_callinfo ec;
|
|
|
|
if (efi_runtime == NULL)
|
|
return (ENXIO);
|
|
bzero(&ec, sizeof(ec));
|
|
ec.ec_argcnt = 5;
|
|
ec.ec_name = "rt_setvar";
|
|
ec.ec_arg1 = (uintptr_t)name;
|
|
ec.ec_arg2 = (uintptr_t)vendor;
|
|
ec.ec_arg3 = (uintptr_t)attrib;
|
|
ec.ec_arg4 = (uintptr_t)datasize;
|
|
ec.ec_arg5 = (uintptr_t)data;
|
|
ec.ec_fptr = EFI_RT_METHOD_PA(rt_setvar);
|
|
return (efi_call(&ec));
|
|
}
|
|
|
|
const static struct efi_ops efi_ops = {
|
|
.rt_ok = rt_ok,
|
|
.get_table = get_table,
|
|
.copy_table = copy_table,
|
|
.get_time = get_time,
|
|
.get_time_capabilities = get_time_capabilities,
|
|
.reset_system = reset_system,
|
|
.set_time = set_time,
|
|
.get_waketime = get_waketime,
|
|
.set_waketime = set_waketime,
|
|
.var_get = var_get,
|
|
.var_nextname = var_nextname,
|
|
.var_set = var_set,
|
|
};
|
|
const struct efi_ops *active_efi_ops = &efi_ops;
|
|
|
|
static int
|
|
efirt_modevents(module_t m, int event, void *arg __unused)
|
|
{
|
|
|
|
switch (event) {
|
|
case MOD_LOAD:
|
|
return (efi_init());
|
|
|
|
case MOD_UNLOAD:
|
|
efi_uninit();
|
|
return (0);
|
|
|
|
case MOD_SHUTDOWN:
|
|
return (0);
|
|
|
|
default:
|
|
return (EOPNOTSUPP);
|
|
}
|
|
}
|
|
|
|
static moduledata_t efirt_moddata = {
|
|
.name = "efirt",
|
|
.evhand = efirt_modevents,
|
|
.priv = NULL,
|
|
};
|
|
/* After fpuinitstate, before efidev */
|
|
DECLARE_MODULE(efirt, efirt_moddata, SI_SUB_DRIVERS, SI_ORDER_SECOND);
|
|
MODULE_VERSION(efirt, 1);
|