| 1 | /*
|
|---|
| 2 | * Copyright (c) 2011 Jakub Jermar
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | #include <genarch/efi.h>
|
|---|
| 30 | #include <arch/types.h>
|
|---|
| 31 | #include <stddef.h>
|
|---|
| 32 |
|
|---|
| 33 | void *efi_vendor_table_find(efi_system_table_t *st, efi_guid_t guid)
|
|---|
| 34 | {
|
|---|
| 35 | sysarg_t i;
|
|---|
| 36 |
|
|---|
| 37 | for (i = 0; i < st->conf_table_entries; i++)
|
|---|
| 38 | if ((st->conf_table[i].guid.low == guid.low) &&
|
|---|
| 39 | (st->conf_table[i].guid.high == guid.high))
|
|---|
| 40 | return st->conf_table[i].table;
|
|---|
| 41 |
|
|---|
| 42 | return NULL;
|
|---|
| 43 | }
|
|---|
| 44 |
|
|---|
| 45 | efi_status_t efi_get_memory_map(efi_system_table_t *st,
|
|---|
| 46 | sysarg_t *memory_map_size, efi_v1_memdesc_t **memory_map, sysarg_t *map_key,
|
|---|
| 47 | sysarg_t *descriptor_size, uint32_t *descriptor_version)
|
|---|
| 48 | {
|
|---|
| 49 | efi_status_t status;
|
|---|
| 50 |
|
|---|
| 51 | *memory_map_size = 8 * sizeof(**memory_map);
|
|---|
| 52 |
|
|---|
| 53 | do {
|
|---|
| 54 | /* Allocate space for the memory map. */
|
|---|
| 55 | status = st->boot_services->allocate_pool(EFI_LOADER_DATA,
|
|---|
| 56 | *memory_map_size, (void **) memory_map);
|
|---|
| 57 | if (status != EFI_SUCCESS)
|
|---|
| 58 | return status;
|
|---|
| 59 |
|
|---|
| 60 | /* Try to obtain the map. */
|
|---|
| 61 | status = st->boot_services->get_memory_map(memory_map_size,
|
|---|
| 62 | *memory_map, map_key, descriptor_size, descriptor_version);
|
|---|
| 63 | if (status == EFI_SUCCESS)
|
|---|
| 64 | return status;
|
|---|
| 65 |
|
|---|
| 66 | /* An error occurred, release the allocated memory. */
|
|---|
| 67 | st->boot_services->free_pool(*memory_map);
|
|---|
| 68 | } while (status == EFI_BUFFER_TOO_SMALL);
|
|---|
| 69 |
|
|---|
| 70 | return status;
|
|---|
| 71 | }
|
|---|
