/*
* partition.c - partition table support
*
+ * Copyright (C) 2013 Dinar Valeev
+ *
* Copyright (C) 2004 Sven Luther
*
* Copyright (C) 2001, 2002 Ethan Benson
#include "mac-part.h"
#include "fdisk-part.h"
#include "amiga-part.h"
+#include "gpt-part.h"
#include "partition.h"
#include "prom.h"
#include "string.h"
}
}
+/* GPT partition format */
+static int gpt_magic_present(unsigned char *block_buffer, unsigned int prom_blksize)
+{
+ struct gpt_header *header = (struct gpt_header *)(block_buffer + prom_blksize);
+ return cpu_to_le64(header->signature) == GPT_HEADER_SIGNATURE;
+}
+
+static inline int
+guid_cmp (gpt_part_type_t left, gpt_part_type_t right)
+{
+ return memcmp(&left, &right, sizeof (gpt_part_type_t));
+}
+
+static void partition_gpt_lookup(prom_handle disk, unsigned int prom_blksize,
+ struct partition_t **list)
+{
+ int partition;
+ struct gpt_header *header = (struct gpt_header *)(block_buffer + prom_blksize);
+
+ if (prom_readblocks(disk, cpu_to_le64(header->partitions), 1, block_buffer) != 1) {
+ prom_printf("Can't read GPT partition table %Lu\n", header->partitions);
+ return;
+ }
+ struct gpt_partition *part = (struct gpt_partition *)(block_buffer);
+
+ for (partition = 1; partition <= cpu_to_le32(header->maxpart); partition++, part++) {
+ if ((!guid_cmp(part->type, GPT_BASIC_DATA))||(!guid_cmp(part->type, GPT_LINUX_NATIVE))||(!guid_cmp(part->type, GPT_LINUX_RAID))) {
+ add_new_partition(list, partition, "Linux", 0, le64_to_cpu(part->start), \
+ cpu_to_le64(part->end) - cpu_to_le64(part->start) + 1, \
+ prom_blksize, 1);
+ }
+ }
+}
+
+
/* I don't know if it's possible to handle multisession and other multitrack
* stuffs with the current OF disklabel package. This can still be implemented
* with direct calls to atapi stuffs.
goto bail;
}
- /* Read boot blocs */
- if (prom_readblocks(disk, 0, 1, block_buffer) != 1) {
+ /* Read boot blocks */
+ if (prom_readblocks(disk, 0, 2, block_buffer) != 1) {
prom_printf("Can't read boot blocks\n");
goto bail;
}
if (desc->signature == MAC_DRIVER_MAGIC) {
/* pdisk partition format */
partition_mac_lookup(device, disk, prom_blksize, &list);
+ } else if (gpt_magic_present(block_buffer, prom_blksize)) {
+ /* gpt partition format */
+ partition_gpt_lookup(disk, prom_blksize, &list);
} else if ((block_buffer[510] == 0x55) && (block_buffer[511] == 0xaa)) {
/* fdisk partition format */
partition_fdisk_lookup(device, disk, prom_blksize, &list);