diff options
Diffstat (limited to 'grub-core/lib/efi')
| -rw-r--r-- | grub-core/lib/efi/datetime.c | 82 | ||||
| -rw-r--r-- | grub-core/lib/efi/halt.c | 41 | ||||
| -rw-r--r-- | grub-core/lib/efi/relocator.c | 119 |
3 files changed, 242 insertions, 0 deletions
diff --git a/grub-core/lib/efi/datetime.c b/grub-core/lib/efi/datetime.c new file mode 100644 index 0000000..0fd1b5f --- /dev/null +++ b/grub-core/lib/efi/datetime.c @@ -0,0 +1,82 @@ +/* kern/efi/datetime.c - efi datetime function. + * + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008 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/types.h> +#include <grub/symbol.h> +#include <grub/efi/api.h> +#include <grub/efi/efi.h> +#include <grub/datetime.h> +#include <grub/dl.h> + +GRUB_MOD_LICENSE ("GPLv3+"); + +grub_err_t +grub_get_datetime (struct grub_datetime *datetime) +{ + grub_efi_status_t status; + struct grub_efi_time efi_time; + + status = efi_call_2 (grub_efi_system_table->runtime_services->get_time, + &efi_time, 0); + + if (status) + return grub_error (GRUB_ERR_INVALID_COMMAND, + "can\'t get datetime using efi"); + else + { + datetime->year = efi_time.year; + datetime->month = efi_time.month; + datetime->day = efi_time.day; + datetime->hour = efi_time.hour; + datetime->minute = efi_time.minute; + datetime->second = efi_time.second; + } + + return 0; +} + +grub_err_t +grub_set_datetime (struct grub_datetime *datetime) +{ + grub_efi_status_t status; + struct grub_efi_time efi_time; + + status = efi_call_2 (grub_efi_system_table->runtime_services->get_time, + &efi_time, 0); + + if (status) + return grub_error (GRUB_ERR_INVALID_COMMAND, + "can\'t get datetime using efi"); + + efi_time.year = datetime->year; + efi_time.month = datetime->month; + efi_time.day = datetime->day; + efi_time.hour = datetime->hour; + efi_time.minute = datetime->minute; + efi_time.second = datetime->second; + + status = efi_call_1 (grub_efi_system_table->runtime_services->set_time, + &efi_time); + + if (status) + return grub_error (GRUB_ERR_INVALID_COMMAND, + "can\'t set datetime using efi"); + + return 0; +} diff --git a/grub-core/lib/efi/halt.c b/grub-core/lib/efi/halt.c new file mode 100644 index 0000000..29d4136 --- /dev/null +++ b/grub-core/lib/efi/halt.c @@ -0,0 +1,41 @@ +/* efi.c - generic EFI support */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2006,2007,2008,2009,2010 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/efi/api.h> +#include <grub/efi/efi.h> +#include <grub/misc.h> +#include <grub/mm.h> +#include <grub/kernel.h> +#include <grub/acpi.h> +#include <grub/loader.h> + +void +grub_halt (void) +{ + grub_machine_fini (GRUB_LOADER_FLAG_NORETURN | + GRUB_LOADER_FLAG_EFI_KEEP_ALLOCATED_MEMORY); +#if !defined(__ia64__) && !defined(__arm__) && !defined(__aarch64__) && \ + !defined(__riscv) + grub_acpi_halt (); +#endif + efi_call_4 (grub_efi_system_table->runtime_services->reset_system, + GRUB_EFI_RESET_SHUTDOWN, GRUB_EFI_SUCCESS, 0, NULL); + + while (1); +} diff --git a/grub-core/lib/efi/relocator.c b/grub-core/lib/efi/relocator.c new file mode 100644 index 0000000..319b69e --- /dev/null +++ b/grub-core/lib/efi/relocator.c @@ -0,0 +1,119 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2010 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/relocator.h> +#include <grub/relocator_private.h> +#include <grub/memory.h> +#include <grub/efi/efi.h> +#include <grub/efi/api.h> +#include <grub/term.h> + +#define NEXT_MEMORY_DESCRIPTOR(desc, size) \ + ((grub_efi_memory_descriptor_t *) ((char *) (desc) + (size))) + +unsigned +grub_relocator_firmware_get_max_events (void) +{ + grub_efi_uintn_t mmapsize = 0, descriptor_size = 0; + grub_efi_uint32_t descriptor_version = 0; + grub_efi_uintn_t key; + grub_efi_get_memory_map (&mmapsize, NULL, &key, &descriptor_size, + &descriptor_version); + /* Since grub_relocator_firmware_fill_events uses malloc + we need some reserve. Hence +10. */ + return 2 * (mmapsize / descriptor_size + 10); +} + +unsigned +grub_relocator_firmware_fill_events (struct grub_relocator_mmap_event *events) +{ + grub_efi_uintn_t mmapsize = 0, desc_size = 0; + grub_efi_uint32_t descriptor_version = 0; + grub_efi_memory_descriptor_t *descs = NULL; + grub_efi_uintn_t key; + int counter = 0; + grub_efi_memory_descriptor_t *desc; + + grub_efi_get_memory_map (&mmapsize, NULL, &key, &desc_size, + &descriptor_version); + descs = grub_malloc (mmapsize); + if (!descs) + return 0; + + grub_efi_get_memory_map (&mmapsize, descs, &key, &desc_size, + &descriptor_version); + + for (desc = descs; + (char *) desc < ((char *) descs + mmapsize); + desc = NEXT_MEMORY_DESCRIPTOR (desc, desc_size)) + { + grub_uint64_t start = desc->physical_start; + grub_uint64_t end = desc->physical_start + (desc->num_pages << 12); + + /* post-4G addresses are never supported on 32-bit EFI. + Moreover it has been reported that some 64-bit EFI contrary to the + spec don't map post-4G pages. So if you enable post-4G allocations, + map pages manually or check that they are mapped. + */ + if (end >= 0x100000000ULL) + end = 0x100000000ULL; + if (end <= start) + continue; + if (desc->type != GRUB_EFI_CONVENTIONAL_MEMORY) + continue; + events[counter].type = REG_FIRMWARE_START; + events[counter].pos = start; + counter++; + events[counter].type = REG_FIRMWARE_END; + events[counter].pos = end; + counter++; + } + + return counter; +} + +int +grub_relocator_firmware_alloc_region (grub_addr_t start, grub_size_t size) +{ + grub_efi_boot_services_t *b; + grub_efi_physical_address_t address = start; + grub_efi_status_t status; + + if (grub_efi_is_finished) + return 1; +#ifdef DEBUG_RELOCATOR_NOMEM_DPRINTF + grub_dprintf ("relocator", "EFI alloc: %llx, %llx\n", + (unsigned long long) start, (unsigned long long) size); +#endif + b = grub_efi_system_table->boot_services; + status = efi_call_4 (b->allocate_pages, GRUB_EFI_ALLOCATE_ADDRESS, + GRUB_EFI_LOADER_DATA, size >> 12, &address); + return (status == GRUB_EFI_SUCCESS); +} + +void +grub_relocator_firmware_free_region (grub_addr_t start, grub_size_t size) +{ + grub_efi_boot_services_t *b; + + if (grub_efi_is_finished) + return; + + b = grub_efi_system_table->boot_services; + efi_call_2 (b->free_pages, start, size >> 12); +} |