^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) * runtime-wrappers.c - Runtime Services function call wrappers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Implementation summary:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * -----------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * 1. When user/kernel thread requests to execute efi_runtime_service(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * enqueue work to efi_rts_wq.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * 2. Caller thread waits for completion until the work is finished
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * because it's dependent on the return status and execution of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * efi_runtime_service().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * For instance, get_variable() and get_next_variable().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Copyright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Split off from arch/x86/platform/efi/efi.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Copyright (C) 1999 VA Linux Systems
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Copyright (C) 1999-2002 Hewlett-Packard Co.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * Copyright (C) 2005-2008 Intel Co.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * Copyright (C) 2013 SuSE Labs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define pr_fmt(fmt) "efi: " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/bug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/efi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/irqflags.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/semaphore.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/stringify.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <asm/efi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * Wrap around the new efi_call_virt_generic() macros so that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * code doesn't get too cluttered:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define efi_call_virt(f, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) efi_call_virt_pointer(efi.runtime, f, args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define __efi_call_virt(f, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) __efi_call_virt_pointer(efi.runtime, f, args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct efi_runtime_work efi_rts_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * efi_queue_work: Queue efi_runtime_service() and wait until it's done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * @rts: efi_runtime_service() function identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * @rts_arg<1-5>: efi_runtime_service() function arguments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * Accesses to efi_runtime_services() are serialized by a binary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * semaphore (efi_runtime_lock) and caller waits until the work is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * finished, hence _only_ one work is queued at a time and the caller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * thread waits for completion.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define efi_queue_work(_rts, _arg1, _arg2, _arg3, _arg4, _arg5) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) ({ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) efi_rts_work.status = EFI_ABORTED; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (!efi_enabled(EFI_RUNTIME_SERVICES)) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) pr_warn_once("EFI Runtime Services are disabled!\n"); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) goto exit; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) init_completion(&efi_rts_work.efi_rts_comp); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) INIT_WORK(&efi_rts_work.work, efi_call_rts); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) efi_rts_work.arg1 = _arg1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) efi_rts_work.arg2 = _arg2; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) efi_rts_work.arg3 = _arg3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) efi_rts_work.arg4 = _arg4; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) efi_rts_work.arg5 = _arg5; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) efi_rts_work.efi_rts_id = _rts; \
^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) * queue_work() returns 0 if work was already on queue, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * _ideally_ this should never happen. \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) */ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (queue_work(efi_rts_wq, &efi_rts_work.work)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) wait_for_completion(&efi_rts_work.efi_rts_comp); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) else \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) pr_err("Failed to queue work to efi_rts_wq.\n"); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) exit: \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) efi_rts_work.efi_rts_id = EFI_NONE; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) efi_rts_work.status; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #ifndef arch_efi_save_flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define arch_efi_save_flags(state_flags) local_save_flags(state_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define arch_efi_restore_flags(state_flags) local_irq_restore(state_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unsigned long efi_call_virt_save_flags(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) arch_efi_save_flags(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) void efi_call_virt_check_flags(unsigned long flags, const char *call)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) unsigned long cur_flags, mismatch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) cur_flags = efi_call_virt_save_flags();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) mismatch = flags ^ cur_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (!WARN_ON_ONCE(mismatch & ARCH_EFI_IRQ_FLAGS_MASK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) add_taint(TAINT_FIRMWARE_WORKAROUND, LOCKDEP_NOW_UNRELIABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) pr_err_ratelimited(FW_BUG "IRQ flags corrupted (0x%08lx=>0x%08lx) by EFI %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) flags, cur_flags, call);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) arch_efi_restore_flags(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * According to section 7.1 of the UEFI spec, Runtime Services are not fully
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * reentrant, and there are particular combinations of calls that need to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * serialized. (source: UEFI Specification v2.4A)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * Table 31. Rules for Reentry Into Runtime Services
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * +------------------------------------+-------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * | If previous call is busy in | Forbidden to call |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * +------------------------------------+-------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * | Any | SetVirtualAddressMap() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * +------------------------------------+-------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * | ConvertPointer() | ConvertPointer() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * +------------------------------------+-------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * | SetVariable() | ResetSystem() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * | UpdateCapsule() | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * | SetTime() | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * | SetWakeupTime() | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * | GetNextHighMonotonicCount() | |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * +------------------------------------+-------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * | GetVariable() | GetVariable() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * | GetNextVariableName() | GetNextVariableName() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * | SetVariable() | SetVariable() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * | QueryVariableInfo() | QueryVariableInfo() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * | UpdateCapsule() | UpdateCapsule() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * | QueryCapsuleCapabilities() | QueryCapsuleCapabilities() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * | GetNextHighMonotonicCount() | GetNextHighMonotonicCount() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * +------------------------------------+-------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * | GetTime() | GetTime() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * | SetTime() | SetTime() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * | GetWakeupTime() | GetWakeupTime() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * | SetWakeupTime() | SetWakeupTime() |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * +------------------------------------+-------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * Due to the fact that the EFI pstore may write to the variable store in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * interrupt context, we need to use a lock for at least the groups that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * contain SetVariable() and QueryVariableInfo(). That leaves little else, as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * none of the remaining functions are actually ever called at runtime.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * So let's just use a single lock to serialize all Runtime Services calls.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static DEFINE_SEMAPHORE(efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * Expose the EFI runtime lock to the UV platform
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #ifdef CONFIG_X86_UV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) extern struct semaphore __efi_uv_runtime_lock __alias(efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * Calls the appropriate efi_runtime_service() with the appropriate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * arguments.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * Semantics followed by efi_call_rts() to understand efi_runtime_work:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * 1. If argument was a pointer, recast it from void pointer to original
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * pointer type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * 2. If argument was a value, recast it from void pointer to original
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * pointer type and dereference it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static void efi_call_rts(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) void *arg1, *arg2, *arg3, *arg4, *arg5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) efi_status_t status = EFI_NOT_FOUND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) arg1 = efi_rts_work.arg1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) arg2 = efi_rts_work.arg2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) arg3 = efi_rts_work.arg3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) arg4 = efi_rts_work.arg4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) arg5 = efi_rts_work.arg5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) switch (efi_rts_work.efi_rts_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) case EFI_GET_TIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) status = efi_call_virt(get_time, (efi_time_t *)arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) (efi_time_cap_t *)arg2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) case EFI_SET_TIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) status = efi_call_virt(set_time, (efi_time_t *)arg1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) case EFI_GET_WAKEUP_TIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) status = efi_call_virt(get_wakeup_time, (efi_bool_t *)arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) (efi_bool_t *)arg2, (efi_time_t *)arg3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) case EFI_SET_WAKEUP_TIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) status = efi_call_virt(set_wakeup_time, *(efi_bool_t *)arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) (efi_time_t *)arg2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) case EFI_GET_VARIABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) status = efi_call_virt(get_variable, (efi_char16_t *)arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) (efi_guid_t *)arg2, (u32 *)arg3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) (unsigned long *)arg4, (void *)arg5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) case EFI_GET_NEXT_VARIABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) status = efi_call_virt(get_next_variable, (unsigned long *)arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) (efi_char16_t *)arg2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) (efi_guid_t *)arg3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) case EFI_SET_VARIABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) status = efi_call_virt(set_variable, (efi_char16_t *)arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) (efi_guid_t *)arg2, *(u32 *)arg3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) *(unsigned long *)arg4, (void *)arg5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) case EFI_QUERY_VARIABLE_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) status = efi_call_virt(query_variable_info, *(u32 *)arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) (u64 *)arg2, (u64 *)arg3, (u64 *)arg4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) case EFI_GET_NEXT_HIGH_MONO_COUNT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) status = efi_call_virt(get_next_high_mono_count, (u32 *)arg1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) case EFI_UPDATE_CAPSULE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) status = efi_call_virt(update_capsule,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) (efi_capsule_header_t **)arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) *(unsigned long *)arg2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) *(unsigned long *)arg3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) case EFI_QUERY_CAPSULE_CAPS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) status = efi_call_virt(query_capsule_caps,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) (efi_capsule_header_t **)arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) *(unsigned long *)arg2, (u64 *)arg3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) (int *)arg4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * Ideally, we should never reach here because a caller of this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) * function should have put the right efi_runtime_service()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * function identifier into efi_rts_work->efi_rts_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) pr_err("Requested executing invalid EFI Runtime Service.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) efi_rts_work.status = status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) complete(&efi_rts_work.efi_rts_comp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) status = efi_queue_work(EFI_GET_TIME, tm, tc, NULL, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) static efi_status_t virt_efi_set_time(efi_time_t *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) status = efi_queue_work(EFI_SET_TIME, tm, NULL, NULL, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return status;
^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) static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) efi_bool_t *pending,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) efi_time_t *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) status = efi_queue_work(EFI_GET_WAKEUP_TIME, enabled, pending, tm, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) status = efi_queue_work(EFI_SET_WAKEUP_TIME, &enabled, tm, NULL, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static efi_status_t virt_efi_get_variable(efi_char16_t *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) efi_guid_t *vendor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) u32 *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) unsigned long *data_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) status = efi_queue_work(EFI_GET_VARIABLE, name, vendor, attr, data_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) static efi_status_t virt_efi_get_next_variable(unsigned long *name_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) efi_char16_t *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) efi_guid_t *vendor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) status = efi_queue_work(EFI_GET_NEXT_VARIABLE, name_size, name, vendor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) static efi_status_t virt_efi_set_variable(efi_char16_t *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) efi_guid_t *vendor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) u32 attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) unsigned long data_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) status = efi_queue_work(EFI_SET_VARIABLE, name, vendor, &attr, &data_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static efi_status_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) virt_efi_set_variable_nonblocking(efi_char16_t *name, efi_guid_t *vendor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) u32 attr, unsigned long data_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (down_trylock(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) return EFI_NOT_READY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) status = efi_call_virt(set_variable, name, vendor, attr, data_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) static efi_status_t virt_efi_query_variable_info(u32 attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) u64 *storage_space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) u64 *remaining_space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) u64 *max_variable_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) status = efi_queue_work(EFI_QUERY_VARIABLE_INFO, &attr, storage_space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) remaining_space, max_variable_size, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static efi_status_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) virt_efi_query_variable_info_nonblocking(u32 attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) u64 *storage_space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) u64 *remaining_space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) u64 *max_variable_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) if (down_trylock(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) return EFI_NOT_READY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) status = efi_call_virt(query_variable_info, attr, storage_space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) remaining_space, max_variable_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) static efi_status_t virt_efi_get_next_high_mono_count(u32 *count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) status = efi_queue_work(EFI_GET_NEXT_HIGH_MONO_COUNT, count, NULL, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) static void virt_efi_reset_system(int reset_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) efi_status_t status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) unsigned long data_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) efi_char16_t *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (down_trylock(&efi_runtime_lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) pr_warn("failed to invoke the reset_system() runtime service:\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) "could not get exclusive access to the firmware\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) efi_rts_work.efi_rts_id = EFI_RESET_SYSTEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) __efi_call_virt(reset_system, reset_type, status, data_size, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) unsigned long count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) unsigned long sg_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) status = efi_queue_work(EFI_UPDATE_CAPSULE, capsules, &count, &sg_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) unsigned long count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) u64 *max_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) int *reset_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) efi_status_t status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) return EFI_UNSUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (down_interruptible(&efi_runtime_lock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) return EFI_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) status = efi_queue_work(EFI_QUERY_CAPSULE_CAPS, capsules, &count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) max_size, reset_type, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) up(&efi_runtime_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) void efi_native_runtime_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) efi.get_time = virt_efi_get_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) efi.set_time = virt_efi_set_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) efi.get_wakeup_time = virt_efi_get_wakeup_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) efi.set_wakeup_time = virt_efi_set_wakeup_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) efi.get_variable = virt_efi_get_variable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) efi.get_next_variable = virt_efi_get_next_variable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) efi.set_variable = virt_efi_set_variable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) efi.set_variable_nonblocking = virt_efi_set_variable_nonblocking;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) efi.reset_system = virt_efi_reset_system;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) efi.query_variable_info = virt_efi_query_variable_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) efi.query_variable_info_nonblocking = virt_efi_query_variable_info_nonblocking;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) efi.update_capsule = virt_efi_update_capsule;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) efi.query_capsule_caps = virt_efi_query_capsule_caps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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