From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- drivers/partition/gpt.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 drivers/partition/gpt.c (limited to 'drivers/partition/gpt.c') diff --git a/drivers/partition/gpt.c b/drivers/partition/gpt.c new file mode 100644 index 0000000..4fe8322 --- /dev/null +++ b/drivers/partition/gpt.c @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2016-2022, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include +#include +#include + +#include +#include +#include +#include + +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; +} -- cgit v1.2.3