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/*
* Copyright (c) 2016-2022, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <common/debug.h>
#include <drivers/partition/efi.h>
#include <drivers/partition/gpt.h>
#include <lib/utils.h>
static int unicode_to_ascii(unsigned short *str_in, unsigned char *str_out)
{
uint8_t *name;
int i;
assert((str_in != NULL) && (str_out != NULL));
name = (uint8_t *)str_in;
assert(name[0] != '\0');
/* check whether the unicode string is valid */
for (i = 1; i < (EFI_NAMELEN << 1); i += 2) {
if (name[i] != '\0') {
return -EINVAL;
}
}
/* convert the unicode string to ascii string */
for (i = 0; i < (EFI_NAMELEN << 1); i += 2) {
str_out[i >> 1] = name[i];
if (name[i] == '\0') {
break;
}
}
return 0;
}
int parse_gpt_entry(gpt_entry_t *gpt_entry, partition_entry_t *entry)
{
int result;
assert((gpt_entry != NULL) && (entry != NULL));
if ((gpt_entry->first_lba == 0) && (gpt_entry->last_lba == 0)) {
return -EINVAL;
}
zeromem(entry, sizeof(partition_entry_t));
result = unicode_to_ascii(gpt_entry->name, (uint8_t *)entry->name);
if (result != 0) {
return result;
}
entry->start = (uint64_t)gpt_entry->first_lba *
PLAT_PARTITION_BLOCK_SIZE;
entry->length = (uint64_t)(gpt_entry->last_lba -
gpt_entry->first_lba + 1) *
PLAT_PARTITION_BLOCK_SIZE;
guidcpy(&entry->part_guid, &gpt_entry->unique_uuid);
guidcpy(&entry->type_guid, &gpt_entry->type_uuid);
return 0;
}
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