diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/firmware-utils/src/ptgen.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/tools/firmware-utils/src/ptgen.c b/tools/firmware-utils/src/ptgen.c index a8b89a870a..1eed21393d 100644 --- a/tools/firmware-utils/src/ptgen.c +++ b/tools/firmware-utils/src/ptgen.c @@ -94,6 +94,7 @@ typedef struct { #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) @@ -120,6 +121,7 @@ struct pte { }; struct partinfo { + unsigned long actual_start; unsigned long start; unsigned long size; int type; @@ -383,7 +385,8 @@ static int gen_gptable(uint32_t signature, guid_t guid, unsigned nr) .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, pmbr = 1; @@ -396,7 +399,7 @@ static int gen_gptable(uint32_t signature, guid_t guid, unsigned nr) 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", @@ -407,11 +410,10 @@ static int gen_gptable(uint32_t signature, guid_t guid, unsigned nr) } 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; @@ -445,13 +447,15 @@ static int gen_gptable(uint32_t signature, guid_t guid, unsigned nr) 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[0].type = 0xEE; pte[0].start = cpu_to_le32(GPT_HEADER_SECTOR); @@ -459,7 +463,7 @@ static int gen_gptable(uint32_t signature, guid_t guid, unsigned nr) 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)); @@ -651,11 +655,14 @@ int main (int argc, char **argv) } } 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; } |