/*
* 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"
#include "linux/iso_fs.h"
#include "debug.h"
#include "errors.h"
+#include "bootinfo.h"
+#include "byteorder.h"
/* We currently don't check the partition type, some users
* are putting crap there and still expect it to work...
#endif
-/* Local functions */
-static unsigned long swab32(unsigned long value);
-
-#define MAX_BLOCK_SIZE 2048
-static unsigned char block_buffer[MAX_BLOCK_SIZE];
+#define MAX_BLOCK_SIZE 4096
+static unsigned char block_buffer[MAX_BLOCK_SIZE * 2];
static void
add_new_partition(struct partition_t** list, int part_number, const char *part_type,
- const char *part_name, unsigned long part_start, unsigned long part_size,
+ const char *part_name, unsigned long long part_start, unsigned long long part_size,
unsigned short part_blocksize, int sys_ind)
{
struct partition_t* part;
partition,
"Linux", /* type */
'\0', /* name */
- swab32(*(unsigned int *)(part->start4)),
- swab32(*(unsigned int *)(part->size4)),
+ le32_to_cpu(*(unsigned int *)part->start4),
+ le32_to_cpu(*(unsigned int *)part->size4),
512 /*blksize*/,
part->sys_ind /* partition type */ );
}
}
}
+/* 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.
for (i=0; i < possible; i++) used[i] = 0;
- for (part = amiga_block[AMIGA_PARTITIONS], partition = 0;
+ for (part = amiga_block[AMIGA_PARTITIONS], partition = 1;
part != AMIGA_END;
part = amiga_block[AMIGA_PART_NEXT], partition++)
{
struct partition_t* list = NULL;
unsigned int prom_blksize, iso_root_block;
- strncpy(block_buffer, device, 2040);
- strcat(block_buffer, ":0");
+ strncpy((char *)block_buffer, device, 2040);
+ if (_machine != _MACH_bplan)
+ strcat((char *)block_buffer, ":0");
/* Open device */
- disk = prom_open(block_buffer);
+ disk = prom_open((char *)block_buffer);
if (disk == NULL) {
prom_printf("Can't open device <%s>\n", block_buffer);
goto bail;
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);
struct partition_t* found;
char *type = NULL;
- if (prom_get_devtype(device) != FILE_DEVICE_BLOCK)
+ int device_kind = prom_get_devtype(device);
+ if (device_kind != FILE_DEVICE_BLOCK && device_kind != FILE_DEVICE_ISCSI)
return NULL;
parts = partitions_lookup(device);
return '\0';
for (p = parts; p && !found; p=p->next) {
- DEBUG_F("number: %02d, start: 0x%08lx, length: 0x%08lx, type: %s, name: %s\n",
+ DEBUG_F("number: %02d, start: 0x%08Lx, length: 0x%08Lx, type: %s, name: %s\n",
p->part_number, p->part_start, p->part_size, p->part_type, p->part_name);
if ((partition >= 0) && (partition == p->part_number)) {
type = strdup(p->part_type);
list = next;
}
}
-unsigned long
-swab32(unsigned long value)
-{
- __u32 result;
-
- __asm__("rlwimi %0,%1,24,16,23\n\t"
- "rlwimi %0,%1,8,8,15\n\t"
- "rlwimi %0,%1,24,0,7"
- : "=r" (result)
- : "r" (value), "0" (value >> 24));
- return result;
-}
/*