+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ptgen - partition table generator
* Copyright (C) 2006 by Felix Fietkau <nbd@nbd.name>
*
* UUID/GUID definition stolen from kernel/include/uapi/linux/uuid.h
* Copyright (C) 2010, Intel Corp. Huang Ying <ying.huang@intel.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <byteswap.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
GUID_INIT( 0x21686148, 0x6449, 0x6E6F, \
0x74, 0x4E, 0x65, 0x65, 0x64, 0x45, 0x46, 0x49)
+#define GUID_PARTITION_CHROME_OS_KERNEL \
+ GUID_INIT( 0xFE3A2A5D, 0x4F32, 0x41A7, \
+ 0xB7, 0x25, 0xAC, 0xCC, 0x32, 0x85, 0xA3, 0x09)
+
#define GUID_PARTITION_LINUX_FIT_GUID \
GUID_INIT( 0xcae9be83, 0xb15f, 0x49cc, \
0x86, 0x3f, 0x08, 0x1b, 0x74, 0x4a, 0x2d, 0x93)
#define GPT_ENTRY_SIZE 128
#define GPT_ENTRY_MAX 128
#define GPT_ENTRY_NAME_SIZE 72
+#define GPT_SIZE GPT_ENTRY_SIZE * GPT_ENTRY_MAX / DISK_SECTOR_SIZE
#define GPT_ATTR_PLAT_REQUIRED BIT(0)
#define GPT_ATTR_EFI_IGNORE BIT(1)
};
struct partinfo {
+ unsigned long actual_start;
unsigned long start;
unsigned long size;
int type;
+ int hybrid;
char *name;
short int required;
+ bool has_guid;
guid_t guid;
+ uint64_t gattr; /* GPT partition attributes */
};
/* GPT Partition table header */
return 0;
}
+/*
+ * Map GPT partition types to partition GUIDs.
+ * NB: not all GPT partition types have an equivalent MBR type.
+ */
+static inline bool parse_gpt_parttype(const char *type, struct partinfo *part)
+{
+ if (!strcmp(type, "cros_kernel")) {
+ part->has_guid = true;
+ part->guid = GUID_PARTITION_CHROME_OS_KERNEL;
+ /* Default attributes: bootable kernel. */
+ part->gattr = (1ULL << 48) | /* priority=1 */
+ (1ULL << 56); /* success=1 */
+ return true;
+ }
+ return false;
+}
+
/* init an utf-16 string from utf-8 string */
static inline void init_utf16(char *str, uint16_t *buf, unsigned bufsize)
{
/* check the partition sizes and write the guid partition table */
static int gen_gptable(uint32_t signature, guid_t guid, unsigned nr)
{
- struct pte pte;
+ struct pte pte[MBR_ENTRY_MAX];
struct gpth gpth = {
.signature = cpu_to_le64(GPT_SIGNATURE),
.revision = cpu_to_le32(GPT_REVISION),
.entry_size = cpu_to_le32(GPT_ENTRY_SIZE),
};
struct gpte gpte[GPT_ENTRY_MAX];
- uint64_t start, end, sect = 0;
+ uint64_t start, end;
+ uint64_t sect = GPT_SIZE + GPT_FIRST_ENTRY_SECTOR;
int fd, ret = -1;
- unsigned i;
+ unsigned i, pmbr = 1;
+ memset(pte, 0, sizeof(struct pte) * MBR_ENTRY_MAX);
memset(gpte, 0, GPT_ENTRY_SIZE * GPT_ENTRY_MAX);
for (i = 0; i < nr; i++) {
if (!parts[i].size) {
fprintf(stderr, "Invalid size in partition %d!\n", i);
return ret;
}
- start = sect + sectors;
+ start = sect;
if (parts[i].start != 0) {
if (parts[i].start * 2 < start) {
fprintf(stderr, "Invalid start %ld for partition %d!\n",
} else if (kb_align != 0) {
start = round_to_kb(start);
}
+ parts[i].actual_start = start;
gpte[i].start = cpu_to_le64(start);
sect = start + parts[i].size * 2;
- if (kb_align == 0)
- sect = round_to_cyl(sect);
gpte[i].end = cpu_to_le64(sect -1);
gpte[i].guid = guid;
gpte[i].guid.b[sizeof(guid_t) -1] += i + 1;
gpte[i].type = parts[i].guid;
+ if (parts[i].hybrid && pmbr < MBR_ENTRY_MAX) {
+ pte[pmbr].active = ((i + 1) == active) ? 0x80 : 0;
+ pte[pmbr].type = parts[i].type;
+ pte[pmbr].start = cpu_to_le32(start);
+ pte[pmbr].length = cpu_to_le32(sect - start);
+ to_chs(start, pte[1].chs_start);
+ to_chs(sect - 1, pte[1].chs_end);
+ pmbr++;
+ }
+ gpte[i].attr = parts[i].gattr;
+
if (parts[i].name)
init_utf16(parts[i].name, (uint16_t *)gpte[i].name, GPT_ENTRY_NAME_SIZE / sizeof(uint16_t));
printf("%" PRIu64 "\n", (sect - start) * DISK_SECTOR_SIZE);
}
- gpte[GPT_ENTRY_MAX - 1].start = cpu_to_le64(GPT_FIRST_ENTRY_SECTOR + GPT_ENTRY_SIZE * GPT_ENTRY_MAX / DISK_SECTOR_SIZE);
- gpte[GPT_ENTRY_MAX - 1].end = cpu_to_le64((kb_align ? round_to_kb(sectors) : (unsigned long)sectors) - 1);
- gpte[GPT_ENTRY_MAX - 1].type = GUID_PARTITION_BIOS_BOOT;
- gpte[GPT_ENTRY_MAX - 1].guid = guid;
- gpte[GPT_ENTRY_MAX - 1].guid.b[sizeof(guid_t) -1] += GPT_ENTRY_MAX;
+ if (parts[0].actual_start > GPT_FIRST_ENTRY_SECTOR + GPT_SIZE) {
+ gpte[GPT_ENTRY_MAX - 1].start = cpu_to_le64(GPT_FIRST_ENTRY_SECTOR + GPT_SIZE);
+ gpte[GPT_ENTRY_MAX - 1].end = cpu_to_le64(parts[0].actual_start - 1);
+ gpte[GPT_ENTRY_MAX - 1].type = GUID_PARTITION_BIOS_BOOT;
+ gpte[GPT_ENTRY_MAX - 1].guid = guid;
+ gpte[GPT_ENTRY_MAX - 1].guid.b[sizeof(guid_t) -1] += GPT_ENTRY_MAX;
+ }
- end = sect + sectors - 1;
+ end = sect + GPT_SIZE;
- pte.type = 0xEE;
- pte.start = cpu_to_le32(GPT_HEADER_SECTOR);
- pte.length = cpu_to_le32(end);
- to_chs(GPT_HEADER_SECTOR, pte.chs_start);
- to_chs(end, pte.chs_end);
+ pte[0].type = 0xEE;
+ pte[0].start = cpu_to_le32(GPT_HEADER_SECTOR);
+ pte[0].length = cpu_to_le32(end - GPT_HEADER_SECTOR);
+ to_chs(GPT_HEADER_SECTOR, pte[0].chs_start);
+ to_chs(end, pte[0].chs_end);
- gpth.last_usable = cpu_to_le64(end - GPT_ENTRY_SIZE * GPT_ENTRY_MAX / DISK_SECTOR_SIZE - 1);
+ gpth.last_usable = cpu_to_le64(end - GPT_SIZE - 1);
gpth.alternate = cpu_to_le64(end);
gpth.entry_crc32 = cpu_to_le32(gpt_crc32(gpte, GPT_ENTRY_SIZE * GPT_ENTRY_MAX));
gpth.crc32 = cpu_to_le32(gpt_crc32((char *)&gpth, GPT_HEADER_SIZE));
}
lseek(fd, MBR_PARTITION_ENTRY_OFFSET, SEEK_SET);
- if (write(fd, &pte, sizeof(struct pte)) != sizeof(struct pte)) {
+ if (write(fd, pte, sizeof(struct pte) * MBR_ENTRY_MAX) != sizeof(struct pte) * MBR_ENTRY_MAX) {
fputs("write failed.\n", stderr);
goto fail;
}
static void usage(char *prog)
{
- fprintf(stderr, "Usage: %s [-v] [-n] [-g] -h <heads> -s <sectors> -o <outputfile> [-a 0..4] [-l <align kB>] [-G <guid>] [[-t <type>] [-r] [-N <name>] -p <size>[@<start>]...] \n", prog);
+ fprintf(stderr, "Usage: %s [-v] [-n] [-g] -h <heads> -s <sectors> -o <outputfile>\n"
+ " [-a 0..4] [-l <align kB>] [-G <guid>]\n"
+ " [[-t <type> | -T <GPT part type>] [-r] [-N <name>] -p <size>[@<start>]...] \n", prog);
exit(EXIT_FAILURE);
}
int ch;
int part = 0;
char *name = NULL;
- unsigned short int required = 0;
+ unsigned short int hybrid = 0, required = 0;
uint32_t signature = 0x5452574F; /* 'OWRT' */
guid_t guid = GUID_INIT( signature, 0x2211, 0x4433, \
0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0x00);
- guid_t part_guid = GUID_PARTITION_BASIC_DATA;
- while ((ch = getopt(argc, argv, "h:s:p:a:t:o:vnN:gl:rS:G:")) != -1) {
+ while ((ch = getopt(argc, argv, "h:s:p:a:t:T:o:vnHN:gl:rS:G:")) != -1) {
switch (ch) {
case 'o':
filename = optarg;
case 'g':
use_guid_partition_table = 1;
break;
+ case 'H':
+ hybrid = 1;
+ break;
case 'h':
heads = (int)strtoul(optarg, NULL, 0);
break;
*(p++) = 0;
parts[part].start = to_kbytes(p);
}
- part_guid = type_to_guid_and_name(type, &name);
+ if (!parts[part].has_guid)
+ parts[part].guid = type_to_guid_and_name(type, &name);
+
parts[part].size = to_kbytes(optarg);
parts[part].required = required;
parts[part].name = name;
- parts[part].guid = part_guid;
+ parts[part].hybrid = hybrid;
fprintf(stderr, "part %ld %ld\n", parts[part].start, parts[part].size);
parts[part++].type = type;
/*
- * reset 'name' and 'required'
+ * reset 'name','required' and 'hybrid'
* 'type' is deliberately inherited from the previous delcaration
*/
name = NULL;
required = 0;
+ hybrid = 0;
break;
case 'N':
name = optarg;
break;
case 't':
type = (char)strtoul(optarg, NULL, 16);
- part_guid = type_to_guid_and_name(type, &name);
break;
case 'a':
active = (int)strtoul(optarg, NULL, 0);
case 'S':
signature = strtoul(optarg, NULL, 0);
break;
+ case 'T':
+ if (!parse_gpt_parttype(optarg, &parts[part])) {
+ fprintf(stderr,
+ "Invalid GPT partition type \"%s\"\n",
+ optarg);
+ exit(EXIT_FAILURE);
+ }
+ break;
case 'G':
if (guid_parse(optarg, &guid)) {
fputs("Invalid guid string\n", stderr);
}
}
argc -= optind;
- if (argc || (heads <= 0) || (sectors <= 0) || !filename)
+ if (argc || (!use_guid_partition_table && ((heads <= 0) || (sectors <= 0))) || !filename)
usage(argv[0]);
- if (use_guid_partition_table)
+ if (use_guid_partition_table) {
+ heads = 254;
+ sectors = 63;
return gen_gptable(signature, guid, part) ? EXIT_FAILURE : EXIT_SUCCESS;
+ }
return gen_ptable(signature, part) ? EXIT_FAILURE : EXIT_SUCCESS;
}
projects / project / firmware-utils.git / blobdiff