* uses parts of afdisk
* Copyright (C) 2002 by David Roetzel <david@roetzel.de>
*
+ * 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
#include <stdint.h>
#include <stdbool.h>
#include <ctype.h>
+#include <inttypes.h>
#include <fcntl.h>
#include <stdint.h>
+#include "cyg_crc.h"
#if __BYTE_ORDER == __BIG_ENDIAN
+#define cpu_to_le16(x) bswap_16(x)
#define cpu_to_le32(x) bswap_32(x)
+#define cpu_to_le64(x) bswap_64(x)
#elif __BYTE_ORDER == __LITTLE_ENDIAN
+#define cpu_to_le16(x) (x)
#define cpu_to_le32(x) (x)
+#define cpu_to_le64(x) (x)
#else
#error unknown endianness!
#endif
+#define swap(a, b) \
+ do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
+
+typedef struct {
+ uint8_t b[16];
+} guid_t;
+
+#define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \
+((guid_t) \
+{{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
+ (b) & 0xff, ((b) >> 8) & 0xff, \
+ (c) & 0xff, ((c) >> 8) & 0xff, \
+ (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
+
+#define GUID_STRING_LENGTH 36
+
+#define GPT_SIGNATURE 0x5452415020494645ULL
+#define GPT_REVISION 0x00010000
+
+#define GUID_PARTITION_SYSTEM \
+ GUID_INIT( 0xC12A7328, 0xF81F, 0x11d2, \
+ 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B)
+
+#define GUID_PARTITION_BASIC_DATA \
+ GUID_INIT( 0xEBD0A0A2, 0xB9E5, 0x4433, \
+ 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7)
+
+#define GUID_PARTITION_BIOS_BOOT \
+ GUID_INIT( 0x21686148, 0x6449, 0x6E6F, \
+ 0x74, 0x4E, 0x65, 0x65, 0x64, 0x45, 0x46, 0x49)
+
+#define GPT_HEADER_SIZE 92
+#define GPT_ENTRY_SIZE 128
+#define GPT_ENTRY_MAX 128
+#define GPT_ENTRY_NAME_SIZE 72
+
+#define GPT_HEADER_SECTOR 1
+#define GPT_FIRST_ENTRY_SECTOR 2
+
+#define MBR_ENTRY_MAX 4
+#define MBR_DISK_SIGNATURE_OFFSET 440
+#define MBR_PARTITION_ENTRY_OFFSET 446
+#define MBR_BOOT_SIGNATURE_OFFSET 510
+
+#define DISK_SECTOR_SIZE 512
+
/* Partition table entry */
struct pte {
uint8_t active;
int type;
};
+/* GPT Partition table header */
+struct gpth {
+ uint64_t signature;
+ uint32_t revision;
+ uint32_t size;
+ uint32_t crc32;
+ uint32_t reserved;
+ uint64_t self;
+ uint64_t alternate;
+ uint64_t first_usable;
+ uint64_t last_usable;
+ guid_t disk_guid;
+ uint64_t first_entry;
+ uint32_t entry_num;
+ uint32_t entry_size;
+ uint32_t entry_crc32;
+} __attribute__((packed));
+
+/* GPT Partition table entry */
+struct gpte {
+ guid_t type;
+ guid_t guid;
+ uint64_t start;
+ uint64_t end;
+ uint64_t attr;
+ char name[GPT_ENTRY_NAME_SIZE];
+} __attribute__((packed));
+
+
int verbose = 0;
int active = 1;
int heads = -1;
int sectors = -1;
int kb_align = 0;
bool ignore_null_sized_partition = false;
-struct partinfo parts[4];
+bool use_guid_partition_table = false;
+struct partinfo parts[GPT_ENTRY_MAX];
char *filename = NULL;
end++;
if (*end) {
- fprintf(stderr, "garbage after end of number\n");
+ fputs("garbage after end of number\n", stderr);
return 0;
}
return ((sect - 1) / kb_align + 1) * kb_align;
}
+/* Compute a CRC for guid partition table */
+static inline unsigned long gpt_crc32(void *buf, unsigned long len)
+{
+ return cyg_crc32_accumulate(~0L, buf, len) ^ ~0L;
+}
+
+/* Parse a guid string to guid_t struct */
+static inline int guid_parse(char *buf, guid_t *guid)
+{
+ char b[4] = {0};
+ char *p = buf;
+ unsigned i = 0;
+ if (strnlen(buf, GUID_STRING_LENGTH) != GUID_STRING_LENGTH)
+ return -1;
+ for (i = 0; i < sizeof(guid_t); i++) {
+ if (*p == '-')
+ p++;
+ if (*p == '\0')
+ return -1;
+ memcpy(b, p, 2);
+ guid->b[i] = strtol(b, 0, 16);
+ p += 2;
+ }
+ swap(guid->b[0], guid->b[3]);
+ swap(guid->b[1], guid->b[2]);
+ swap(guid->b[4], guid->b[5]);
+ swap(guid->b[6], guid->b[7]);
+ return 0;
+}
+
+/* init an utf-16 string from utf-8 string */
+static inline void init_utf16(char *str, uint16_t *buf, unsigned bufsize)
+{
+ unsigned i, n = 0;
+ for (i = 0; i < bufsize; i++) {
+ if (str[n] == 0x00) {
+ buf[i] = 0x00;
+ return ;
+ } else if ((str[n] & 0x80) == 0x00) {//0xxxxxxx
+ buf[i] = cpu_to_le16(str[n++]);
+ } else if ((str[n] & 0xE0) == 0xC0) {//110xxxxx
+ buf[i] = cpu_to_le16((str[n] & 0x1F) << 6 | (str[n + 1] & 0x3F));
+ n += 2;
+ } else if ((str[n] & 0xF0) == 0xE0) {//1110xxxx
+ buf[i] = cpu_to_le16((str[n] & 0x0F) << 12 | (str[n + 1] & 0x3F) << 6 | (str[n + 2] & 0x3F));
+ n += 3;
+ } else {
+ buf[i] = cpu_to_le16('?');
+ n++;
+ }
+ }
+}
+
/* check the partition sizes and write the partition table */
static int gen_ptable(uint32_t signature, int nr)
{
- struct pte pte[4];
- unsigned long sect = 0;
- int i, fd, ret = -1, start, len;
+ struct pte pte[MBR_ENTRY_MAX];
+ unsigned long start, len, sect = 0;
+ int i, fd, ret = -1;
- memset(pte, 0, sizeof(struct pte) * 4);
+ memset(pte, 0, sizeof(struct pte) * MBR_ENTRY_MAX);
for (i = 0; i < nr; i++) {
if (!parts[i].size) {
if (ignore_null_sized_partition)
continue;
fprintf(stderr, "Invalid size in partition %d!\n", i);
- return -1;
+ return ret;
}
pte[i].active = ((i + 1) == active) ? 0x80 : 0;
to_chs(start + len - 1, pte[i].chs_end);
if (verbose)
- fprintf(stderr, "Partition %d: start=%ld, end=%ld, size=%ld\n", i, (long)start * 512, ((long)start + (long)len) * 512, (long)len * 512);
- printf("%ld\n", (long)start * 512);
- printf("%ld\n", (long)len * 512);
+ fprintf(stderr, "Partition %d: start=%ld, end=%ld, size=%ld\n",
+ i,
+ (long)start * DISK_SECTOR_SIZE,
+ (long)(start + len) * DISK_SECTOR_SIZE,
+ (long)len * DISK_SECTOR_SIZE);
+ printf("%ld\n", (long)start * DISK_SECTOR_SIZE);
+ printf("%ld\n", (long)len * DISK_SECTOR_SIZE);
}
if ((fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0644)) < 0) {
fprintf(stderr, "Can't open output file '%s'\n",filename);
- return -1;
+ return ret;
+ }
+
+ lseek(fd, MBR_DISK_SIGNATURE_OFFSET, SEEK_SET);
+ if (write(fd, &signature, sizeof(signature)) != sizeof(signature)) {
+ fputs("write failed.\n", stderr);
+ goto fail;
+ }
+
+ lseek(fd, MBR_PARTITION_ENTRY_OFFSET, SEEK_SET);
+ if (write(fd, pte, sizeof(struct pte) * MBR_ENTRY_MAX) != sizeof(struct pte) * MBR_ENTRY_MAX) {
+ fputs("write failed.\n", stderr);
+ goto fail;
+ }
+ lseek(fd, MBR_BOOT_SIGNATURE_OFFSET, SEEK_SET);
+ if (write(fd, "\x55\xaa", 2) != 2) {
+ fputs("write failed.\n", stderr);
+ goto fail;
+ }
+
+ ret = 0;
+fail:
+ close(fd);
+ return ret;
+}
+
+/* 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 gpth gpth = {
+ .signature = cpu_to_le64(GPT_SIGNATURE),
+ .revision = cpu_to_le32(GPT_REVISION),
+ .size = cpu_to_le32(GPT_HEADER_SIZE),
+ .self = cpu_to_le64(GPT_HEADER_SECTOR),
+ .first_usable = cpu_to_le64(GPT_FIRST_ENTRY_SECTOR + GPT_ENTRY_SIZE * GPT_ENTRY_MAX / DISK_SECTOR_SIZE),
+ .first_entry = cpu_to_le64(GPT_FIRST_ENTRY_SECTOR),
+ .disk_guid = guid,
+ .entry_num = cpu_to_le32(GPT_ENTRY_MAX),
+ .entry_size = cpu_to_le32(GPT_ENTRY_SIZE),
+ };
+ struct gpte gpte[GPT_ENTRY_MAX];
+ uint64_t start, end, sect = 0;
+ int fd, ret = -1;
+ unsigned i;
+
+ memset(gpte, 0, GPT_ENTRY_SIZE * GPT_ENTRY_MAX);
+ for (i = 0; i < nr; i++) {
+ if (!parts[i].size) {
+ if (ignore_null_sized_partition)
+ continue;
+ fprintf(stderr, "Invalid size in partition %d!\n", i);
+ return ret;
+ }
+ start = sect + sectors;
+ if (kb_align != 0)
+ start = round_to_kb(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;
+ if (parts[i].type == 0xEF || (i + 1) == (unsigned)active) {
+ gpte[i].type = GUID_PARTITION_SYSTEM;
+ init_utf16("EFI System Partition", (uint16_t *)gpte[i].name, GPT_ENTRY_NAME_SIZE / sizeof(uint16_t));
+ } else {
+ gpte[i].type = GUID_PARTITION_BASIC_DATA;
+ }
+
+ if (verbose)
+ fprintf(stderr, "Partition %d: start=%" PRIu64 ", end=%" PRIu64 ", size=%" PRIu64 "\n",
+ i,
+ start * DISK_SECTOR_SIZE, sect * DISK_SECTOR_SIZE,
+ (sect - start) * DISK_SECTOR_SIZE);
+ printf("%" PRIu64 "\n", start * DISK_SECTOR_SIZE);
+ 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;
+
+ end = sect + sectors - 1;
+
+ 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);
+
+ gpth.last_usable = cpu_to_le64(end - GPT_ENTRY_SIZE * GPT_ENTRY_MAX / DISK_SECTOR_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));
+
+ if ((fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0644)) < 0) {
+ fprintf(stderr, "Can't open output file '%s'\n",filename);
+ return ret;
}
- lseek(fd, 440, SEEK_SET);
+ lseek(fd, MBR_DISK_SIGNATURE_OFFSET, SEEK_SET);
if (write(fd, &signature, sizeof(signature)) != sizeof(signature)) {
- fprintf(stderr, "write failed.\n");
+ fputs("write failed.\n", stderr);
goto fail;
}
- lseek(fd, 446, SEEK_SET);
- if (write(fd, pte, sizeof(struct pte) * 4) != sizeof(struct pte) * 4) {
- fprintf(stderr, "write failed.\n");
+ lseek(fd, MBR_PARTITION_ENTRY_OFFSET, SEEK_SET);
+ if (write(fd, &pte, sizeof(struct pte)) != sizeof(struct pte)) {
+ fputs("write failed.\n", stderr);
goto fail;
}
- lseek(fd, 510, SEEK_SET);
+
+ lseek(fd, MBR_BOOT_SIGNATURE_OFFSET, SEEK_SET);
if (write(fd, "\x55\xaa", 2) != 2) {
- fprintf(stderr, "write failed.\n");
+ fputs("write failed.\n", stderr);
+ goto fail;
+ }
+
+ if (write(fd, &gpth, GPT_HEADER_SIZE) != GPT_HEADER_SIZE) {
+ fputs("write failed.\n", stderr);
+ goto fail;
+ }
+
+ lseek(fd, GPT_FIRST_ENTRY_SECTOR * DISK_SECTOR_SIZE, SEEK_SET);
+ if (write(fd, &gpte, GPT_ENTRY_SIZE * GPT_ENTRY_MAX) != GPT_ENTRY_SIZE * GPT_ENTRY_MAX) {
+ fputs("write failed.\n", stderr);
+ goto fail;
+ }
+
+#ifdef WANT_ALTERNATE_PTABLE
+ /* The alternate partition table (We omit it by default) */
+ swap(gpth.self, gpth.alternate);
+ gpth.first_entry = cpu_to_le64(end - GPT_ENTRY_SIZE * GPT_ENTRY_MAX / DISK_SECTOR_SIZE),
+ gpth.crc32 = 0;
+ gpth.crc32 = cpu_to_le32(gpt_crc32(&gpth, GPT_HEADER_SIZE));
+
+ lseek(fd, end * DISK_SECTOR_SIZE - GPT_ENTRY_SIZE * GPT_ENTRY_MAX, SEEK_SET);
+ if (write(fd, &gpte, GPT_ENTRY_SIZE * GPT_ENTRY_MAX) != GPT_ENTRY_SIZE * GPT_ENTRY_MAX) {
+ fputs("write failed.\n", stderr);
+ goto fail;
+ }
+
+ lseek(fd, end * DISK_SECTOR_SIZE, SEEK_SET);
+ if (write(fd, &gpth, GPT_HEADER_SIZE) != GPT_HEADER_SIZE) {
+ fputs("write failed.\n", stderr);
+ goto fail;
+ }
+ lseek(fd, (end + 1) * DISK_SECTOR_SIZE -1, SEEK_SET);
+ if (write(fd, "\x00", 1) != 1) {
+ fputs("write failed.\n", stderr);
goto fail;
}
+#endif
ret = 0;
fail:
static void usage(char *prog)
{
- fprintf(stderr, "Usage: %s [-v] [-n] -h <heads> -s <sectors> -o <outputfile> [-a 0..4] [-l <align kB>] [[-t <type>] -p <size>...] \n", prog);
+ fprintf(stderr, "Usage: %s [-v] [-n] [-g] -h <heads> -s <sectors> -o <outputfile> [-a 0..4] [-l <align kB>] [-G <guid>] [[-t <type>] -p <size>...] \n", prog);
exit(EXIT_FAILURE);
}
int main (int argc, char **argv)
{
- char type = 0x83;
+ unsigned char type = 0x83;
int ch;
int part = 0;
uint32_t signature = 0x5452574F; /* 'OWRT' */
+ guid_t guid = GUID_INIT( signature, 0x2211, 0x4433, \
+ 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0x00);
- while ((ch = getopt(argc, argv, "h:s:p:a:t:o:vnl:S:")) != -1) {
+ while ((ch = getopt(argc, argv, "h:s:p:a:t:o:vngl:S:G:")) != -1) {
switch (ch) {
case 'o':
filename = optarg;
case 'n':
ignore_null_sized_partition = true;
break;
+ case 'g':
+ use_guid_partition_table = 1;
+ break;
case 'h':
heads = (int)strtoul(optarg, NULL, 0);
break;
sectors = (int)strtoul(optarg, NULL, 0);
break;
case 'p':
- if (part > 3) {
- fprintf(stderr, "Too many partitions\n");
+ if (part > GPT_ENTRY_MAX - 1 || (!use_guid_partition_table && part > 3)) {
+ fputs("Too many partitions\n", stderr);
exit(EXIT_FAILURE);
}
parts[part].size = to_kbytes(optarg);
case 'S':
signature = strtoul(optarg, NULL, 0);
break;
+ case 'G':
+ if (guid_parse(optarg, &guid)) {
+ fputs("Invalid guid string\n", stderr);
+ exit(EXIT_FAILURE);
+ }
+ break;
case '?':
default:
usage(argv[0]);
if (argc || (heads <= 0) || (sectors <= 0) || !filename)
usage(argv[0]);
+ if (use_guid_partition_table)
+ return gen_gptable(signature, guid, part) ? EXIT_FAILURE : EXIT_SUCCESS;
+
return gen_ptable(signature, part) ? EXIT_FAILURE : EXIT_SUCCESS;
}
projects / openwrt / openwrt.git / commitdiff