| /* init.c - initialize an arm-based EFI system */ |
| /* |
| * GRUB -- GRand Unified Bootloader |
| * Copyright (C) 2013 Free Software Foundation, Inc. |
| * |
| * GRUB is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation, either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * GRUB is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with GRUB. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include <grub/env.h> |
| #include <grub/kernel.h> |
| #include <grub/misc.h> |
| #include <grub/mm.h> |
| #include <grub/time.h> |
| #include <grub/efi/efi.h> |
| #include <grub/loader.h> |
| |
| static grub_uint64_t tmr; |
| static grub_efi_event_t tmr_evt; |
| |
| static grub_uint64_t |
| grub_efi_get_time_ms (void) |
| { |
| return tmr; |
| } |
| |
| static void |
| increment_timer (grub_efi_event_t event __attribute__ ((unused)), |
| void *context __attribute__ ((unused))) |
| { |
| tmr += 10; |
| } |
| |
| void |
| grub_machine_init (void) |
| { |
| grub_efi_boot_services_t *b; |
| |
| grub_efi_init (); |
| |
| b = grub_efi_system_table->boot_services; |
| |
| efi_call_5 (b->create_event, GRUB_EFI_EVT_TIMER | GRUB_EFI_EVT_NOTIFY_SIGNAL, |
| GRUB_EFI_TPL_CALLBACK, increment_timer, NULL, &tmr_evt); |
| efi_call_3 (b->set_timer, tmr_evt, GRUB_EFI_TIMER_PERIODIC, 100000); |
| |
| grub_install_get_time_ms (grub_efi_get_time_ms); |
| } |
| |
| void |
| grub_machine_fini (int flags) |
| { |
| grub_efi_boot_services_t *b; |
| |
| if (!(flags & GRUB_LOADER_FLAG_NORETURN)) |
| return; |
| |
| b = grub_efi_system_table->boot_services; |
| |
| efi_call_3 (b->set_timer, tmr_evt, GRUB_EFI_TIMER_CANCEL, 0); |
| efi_call_1 (b->close_event, tmr_evt); |
| |
| grub_efi_fini (); |
| } |