/**
* efi_partition(struct parsed_partitions *state)
* @state
*
* Description: called from check.c, if the disk contains GPT
* partitions, sets up partition entries in the kernel.
*
* If the first block on the disk is a legacy MBR,
* it will get handled by msdos_partition().
* If it's a Protective MBR, we'll handle it here.
*
* We do not create a Linux partition for GPT, but
* only for the actual data partitions.
* Returns:
* -1 if unable to read the partition table
* 0 if this isn't our partition table
* 1 if successful
*
*/
int efi_partition(struct parsed_partitions *state)
{
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
u32 i;
unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
kfree(gpt);
kfree(ptes);
return 0;
}
pr_debug("GUID Partition Table is valid! Yea!\n");
for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
struct partition_meta_info *info;
unsigned label_count = 0;
unsigned label_max;
u64 start = le64_to_cpu(ptes[i].starting_lba);
u64 size = le64_to_cpu(ptes[i].ending_lba) -
le64_to_cpu(ptes[i].starting_lba) + 1ULL;
if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
continue;
put_partition(state, i+1, start * ssz, size * ssz);
/* If this is a RAID volume, tell md */
if (!efi_guidcmp(ptes[i].partition_type_guid,
PARTITION_LINUX_RAID_GUID))
state->parts[i + 1].flags = ADDPART_FLAG_RAID;
info = &state->parts[i + 1].info;
efi_guid_unparse(&ptes[i].unique_partition_guid, info->uuid);
/* Naively convert UTF16-LE to 7 bits. */
label_max = min(sizeof(info->volname) - 1,
sizeof(ptes[i].partition_name));
info->volname[label_max] = 0;
while (label_count < label_max) {
u8 c = ptes[i].partition_name[label_count] & 0xff;
if (c && !isprint(c))
c = '!';
info->volname[label_count] = c;
label_count++;
}
state->parts[i + 1].has_info = true;
}
kfree(ptes);
kfree(gpt);
strlcat(state->pp_buf, "\n", PAGE_SIZE);
return 1;
}
/**
* efi_partition(struct parsed_partitions *state, struct block_device *bdev)
* @state
* @bdev
*
* Description: called from check.c, if the disk contains GPT
* partitions, sets up partition entries in the kernel.
*
* If the first block on the disk is a legacy MBR,
* it will get handled by msdos_partition().
* If it's a Protective MBR, we'll handle it here.
*
* We do not create a Linux partition for GPT, but
* only for the actual data partitions.
* Returns:
* -1 if unable to read the partition table
* 0 if this isn't our partition table
* 1 if successful
*
*/
int
efi_partition(struct parsed_partitions *state, struct block_device *bdev)
{
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
u32 i;
unsigned ssz = bdev_hardsect_size(bdev) / 512;
if (!find_valid_gpt(bdev, &gpt, &ptes) || !gpt || !ptes) {
kfree(gpt);
kfree(ptes);
return 0;
}
Dprintk("GUID Partition Table is valid! Yea!\n");
for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
u64 start = le64_to_cpu(ptes[i].starting_lba);
u64 size = le64_to_cpu(ptes[i].ending_lba) -
le64_to_cpu(ptes[i].starting_lba) + 1ULL;
if (!is_pte_valid(&ptes[i], last_lba(bdev)))
continue;
put_partition(state, i+1, start * ssz, size * ssz);
/* If this is a RAID volume, tell md */
if (!efi_guidcmp(ptes[i].partition_type_guid,
PARTITION_LINUX_RAID_GUID))
state->parts[i+1].flags = 1;
/* If this is a EFI System partition, tell hotplug */
if (!efi_guidcmp(ptes[i].partition_type_guid,
PARTITION_SYSTEM_GUID))
state->parts[i+1].is_efi_system_partition = 1;
}
kfree(ptes);
kfree(gpt);
printk("\n");
return 1;
}
/*
* We allow each variable to be edited via rewriting the
* entire efi variable structure.
*/
static ssize_t
efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count)
{
struct efi_variable *new_var, *var = &entry->var;
struct efivars *efivars = entry->efivars;
efi_status_t status = EFI_NOT_FOUND;
if (count != sizeof(struct efi_variable))
return -EINVAL;
new_var = (struct efi_variable *)buf;
/*
* If only updating the variable data, then the name
* and guid should remain the same
*/
if (memcmp(new_var->VariableName, var->VariableName, sizeof(var->VariableName)) ||
efi_guidcmp(new_var->VendorGuid, var->VendorGuid)) {
printk(KERN_ERR "efivars: Cannot edit the wrong variable!\n");
return -EINVAL;
}
if ((new_var->DataSize <= 0) || (new_var->Attributes == 0)){
printk(KERN_ERR "efivars: DataSize & Attributes must be valid!\n");
return -EINVAL;
}
if ((new_var->Attributes & ~EFI_VARIABLE_MASK) != 0 ||
validate_var(new_var, new_var->Data, new_var->DataSize) == false) {
printk(KERN_ERR "efivars: Malformed variable content\n");
return -EINVAL;
}
spin_lock(&efivars->lock);
status = efivars->ops->set_variable(new_var->VariableName,
&new_var->VendorGuid,
new_var->Attributes,
new_var->DataSize,
new_var->Data);
spin_unlock(&efivars->lock);
if (status != EFI_SUCCESS) {
printk(KERN_WARNING "efivars: set_variable() failed: status=%lx\n",
status);
return -EIO;
}
memcpy(&entry->var, new_var, count);
return count;
}
static int efi_pstore_read_func(struct efivar_entry *entry, void *data)
{
efi_guid_t vendor = LINUX_EFI_CRASH_GUID;
struct pstore_read_data *cb_data = data;
char name[DUMP_NAME_LEN];
int i;
int cnt;
unsigned int part;
unsigned long time, size;
if (efi_guidcmp(entry->var.VendorGuid, vendor))
return 0;
for (i = 0; i < DUMP_NAME_LEN; i++)
name[i] = entry->var.VariableName[i];
if (sscanf(name, "dump-type%u-%u-%d-%lu",
cb_data->type, &part, &cnt, &time) == 4) {
*cb_data->id = generic_id(time, part, cnt);
*cb_data->count = cnt;
cb_data->timespec->tv_sec = time;
cb_data->timespec->tv_nsec = 0;
} else if (sscanf(name, "dump-type%u-%u-%lu",
cb_data->type, &part, &time) == 3) {
/*
* Check if an old format,
* which doesn't support holding
* multiple logs, remains.
*/
*cb_data->id = generic_id(time, part, 0);
*cb_data->count = 0;
cb_data->timespec->tv_sec = time;
cb_data->timespec->tv_nsec = 0;
} else
return 0;
entry->var.DataSize = 1024;
__efivar_entry_get(entry, &entry->var.Attributes,
&entry->var.DataSize, entry->var.Data);
size = entry->var.DataSize;
*cb_data->buf = kmalloc(size, GFP_KERNEL);
if (*cb_data->buf == NULL)
return -ENOMEM;
memcpy(*cb_data->buf, entry->var.Data, size);
return size;
}
/*
* A number of config table entries get remapped to virtual addresses
* after entering EFI virtual mode. However, the kexec kernel requires
* their physical addresses therefore we pass them via setup_data and
* correct those entries to their respective physical addresses here.
*
* Currently only handles smbios which is necessary for some firmware
* implementation.
*/
int __init efi_reuse_config(u64 tables, int nr_tables)
{
int i, sz, ret = 0;
void *p, *tablep;
struct efi_setup_data *data;
if (!efi_setup)
return 0;
if (!efi_enabled(EFI_64BIT))
return 0;
data = early_memremap(efi_setup, sizeof(*data));
if (!data) {
ret = -ENOMEM;
goto out;
}
if (!data->smbios)
goto out_memremap;
sz = sizeof(efi_config_table_64_t);
p = tablep = early_memremap(tables, nr_tables * sz);
if (!p) {
pr_err("Could not map Configuration table!\n");
ret = -ENOMEM;
goto out_memremap;
}
for (i = 0; i < efi.systab->nr_tables; i++) {
efi_guid_t guid;
guid = ((efi_config_table_64_t *)p)->guid;
if (!efi_guidcmp(guid, SMBIOS_TABLE_GUID))
((efi_config_table_64_t *)p)->table = data->smbios;
p += sz;
}
early_memunmap(tablep, nr_tables * sz);
out_memremap:
early_memunmap(data, sizeof(*data));
out:
return ret;
}
void *get_fdt(efi_system_table_t *sys_table)
{
efi_guid_t fdt_guid = DEVICE_TREE_GUID;
efi_config_table_t *tables;
void *fdt;
int i;
tables = (efi_config_table_t *) sys_table->tables;
fdt = NULL;
for (i = 0; i < sys_table->nr_tables; i++)
if (efi_guidcmp(tables[i].guid, fdt_guid) == 0) {
fdt = (void *) tables[i].table;
break;
}
return fdt;
}
/**
* efi_partition(struct parsed_partitions *state)
* @state
*
* Description: called from check.c, if the disk contains GPT
* partitions, sets up partition entries in the kernel.
*
* If the first block on the disk is a legacy MBR,
* it will get handled by msdos_partition().
* If it's a Protective MBR, we'll handle it here.
*
* We do not create a Linux partition for GPT, but
* only for the actual data partitions.
* Returns:
* -1 if unable to read the partition table
* 0 if this isn't our partition table
* 1 if successful
*
*/
int efi_partition(struct parsed_partitions *state)
{
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
u32 i;
unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
kfree(gpt);
kfree(ptes);
return 0;
}
pr_debug("GUID Partition Table is valid! Yea!\n");
for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
u64 start = le64_to_cpu(ptes[i].starting_lba);
u64 size = le64_to_cpu(ptes[i].ending_lba) -
le64_to_cpu(ptes[i].starting_lba) + 1ULL;
u8 name[sizeof(ptes->partition_name) / sizeof(efi_char16_t)];
int len;
if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
continue;
len = utf16s_to_utf8s(ptes[i].partition_name,
sizeof(ptes[i].partition_name) /
sizeof(efi_char16_t),
UTF16_LITTLE_ENDIAN, name,
sizeof(name));
put_named_partition(state, i+1, start * ssz, size * ssz,
name, len);
/* If this is a RAID volume, tell md */
if (!efi_guidcmp(ptes[i].partition_type_guid,
PARTITION_LINUX_RAID_GUID))
state->parts[i + 1].flags = ADDPART_FLAG_RAID;
}
kfree(ptes);
kfree(gpt);
strlcat(state->pp_buf, "\n", PAGE_SIZE);
return 1;
}
static bool variable_is_present(efi_char16_t *variable_name, efi_guid_t *vendor,
struct list_head *head)
{
struct efivar_entry *entry, *n;
unsigned long strsize1, strsize2;
bool found = false;
strsize1 = ucs2_strsize(variable_name, 1024);
list_for_each_entry_safe(entry, n, head, list) {
strsize2 = ucs2_strsize(entry->var.VariableName, 1024);
if (strsize1 == strsize2 &&
!memcmp(variable_name, &(entry->var.VariableName),
strsize2) &&
!efi_guidcmp(entry->var.VendorGuid,
*vendor)) {
found = true;
break;
}
}
/*
* We allow each variable to be edited via rewriting the
* entire efi variable structure.
*/
static ssize_t
efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count)
{
struct efi_variable *new_var, *var = &entry->var;
int err;
if (count != sizeof(struct efi_variable))
return -EINVAL;
new_var = (struct efi_variable *)buf;
/*
* If only updating the variable data, then the name
* and guid should remain the same
*/
if (memcmp(new_var->VariableName, var->VariableName, sizeof(var->VariableName)) ||
efi_guidcmp(new_var->VendorGuid, var->VendorGuid)) {
printk(KERN_ERR "efivars: Cannot edit the wrong variable!\n");
return -EINVAL;
}
if ((new_var->DataSize <= 0) || (new_var->Attributes == 0)){
printk(KERN_ERR "efivars: DataSize & Attributes must be valid!\n");
return -EINVAL;
}
if ((new_var->Attributes & ~EFI_VARIABLE_MASK) != 0 ||
efivar_validate(new_var, new_var->Data, new_var->DataSize) == false) {
printk(KERN_ERR "efivars: Malformed variable content\n");
return -EINVAL;
}
memcpy(&entry->var, new_var, count);
err = efivar_entry_set(entry, new_var->Attributes,
new_var->DataSize, new_var->Data, false);
if (err) {
printk(KERN_WARNING "efivars: set_variable() failed: status=%d\n", err);
return -EIO;
}
return count;
}
void __init early_sn_setup(void)
{
efi_system_table_t *efi_systab;
efi_config_table_t *config_tables;
struct ia64_sal_systab *sal_systab;
struct ia64_sal_desc_entry_point *ep;
char *p;
int i, j;
/*
* Parse enough of the SAL tables to locate the SAL entry point. Since, console
* IO on SN2 is done via SAL calls, early_printk won't work without this.
*
* This code duplicates some of the ACPI table parsing that is in efi.c & sal.c.
* Any changes to those file may have to be made hereas well.
*/
efi_systab = (efi_system_table_t *) __va(ia64_boot_param->efi_systab);
config_tables = __va(efi_systab->tables);
for (i = 0; i < efi_systab->nr_tables; i++) {
if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) ==
0) {
sal_systab = __va(config_tables[i].table);
p = (char *)(sal_systab + 1);
for (j = 0; j < sal_systab->entry_count; j++) {
if (*p == SAL_DESC_ENTRY_POINT) {
ep = (struct ia64_sal_desc_entry_point
*)p;
ia64_sal_handler_init(__va
(ep->sal_proc),
__va(ep->gp));
return;
}
p += SAL_DESC_SIZE(*p);
}
}
}
/* Uh-oh, SAL not available?? */
printk(KERN_ERR "failed to find SAL entry point\n");
}
unsigned long
hcdp_early_uart (void)
{
efi_system_table_t *systab;
efi_config_table_t *config_tables;
unsigned long addr = 0;
hcdp_t *hcdp = 0;
hcdp_dev_t *dev;
int i;
systab = (efi_system_table_t *) ia64_boot_param->efi_systab;
if (!systab)
return 0;
systab = __va(systab);
config_tables = (efi_config_table_t *) systab->tables;
if (!config_tables)
return 0;
config_tables = __va(config_tables);
for (i = 0; i < systab->nr_tables; i++) {
if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) {
hcdp = (hcdp_t *) config_tables[i].table;
break;
}
}
if (!hcdp)
return 0;
hcdp = __va(hcdp);
for (i = 0, dev = hcdp->hcdp_dev; i < hcdp->num_entries; i++, dev++) {
if (dev->type == HCDP_DEV_CONSOLE) {
addr = (u64) dev->base_addr.addrhi << 32 | dev->base_addr.addrlo;
break;
}
}
return addr;
}
void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size)
{
efi_guid_t fdt_guid = DEVICE_TREE_GUID;
efi_config_table_t *tables;
void *fdt;
int i;
tables = (efi_config_table_t *) sys_table->tables;
fdt = NULL;
for (i = 0; i < sys_table->nr_tables; i++)
if (efi_guidcmp(tables[i].guid, fdt_guid) == 0) {
fdt = (void *) tables[i].table;
if (fdt_check_header(fdt) != 0) {
pr_efi_err(sys_table, "Invalid header detected on UEFI supplied FDT, ignoring ...\n");
return NULL;
}
*fdt_size = fdt_totalsize(fdt);
break;
}
return fdt;
}
/**
* read_gpt_pt()
* @fd
* @all - slice with start/size of whole disk
*
* 0 if this isn't our partition table
* number of partitions if successful
*
*/
int
read_gpt_pt (int fd, struct slice all, struct slice *sp, int ns)
{
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
uint32_t i;
int n = 0;
int last_used_index=-1;
int sector_size_mul = get_sector_size(fd)/512;
if (!find_valid_gpt (fd, &gpt, &ptes) || !gpt || !ptes) {
if (gpt)
free (gpt);
if (ptes)
free (ptes);
return 0;
}
for (i = 0; i < __le32_to_cpu(gpt->num_partition_entries) && i < ns; i++) {
if (!efi_guidcmp (NULL_GUID, ptes[i].partition_type_guid)) {
sp[n].start = 0;
sp[n].size = 0;
n++;
} else {
sp[n].start = sector_size_mul *
__le64_to_cpu(ptes[i].starting_lba);
sp[n].size = sector_size_mul *
(__le64_to_cpu(ptes[i].ending_lba) -
__le64_to_cpu(ptes[i].starting_lba) + 1);
last_used_index=n;
n++;
}
}
free (ptes);
free (gpt);
return last_used_index+1;
}
/*
* Clean up an entry with the same name
*/
static int efi_pstore_erase_func(struct efivar_entry *entry, void *data)
{
struct pstore_erase_data *ed = data;
efi_guid_t vendor = LINUX_EFI_CRASH_GUID;
efi_char16_t efi_name_old[DUMP_NAME_LEN];
efi_char16_t *efi_name = ed->name;
unsigned long ucs2_len = ucs2_strlen(ed->name);
char name_old[DUMP_NAME_LEN];
int i;
if (efi_guidcmp(entry->var.VendorGuid, vendor))
return 0;
if (ucs2_strncmp(entry->var.VariableName,
efi_name, (size_t)ucs2_len)) {
/*
* Check if an old format, which doesn't support
* holding multiple logs, remains.
*/
sprintf(name_old, "dump-type%u-%u-%lu", ed->type,
(unsigned int)ed->id, ed->time.tv_sec);
for (i = 0; i < DUMP_NAME_LEN; i++)
efi_name_old[i] = name_old[i];
if (ucs2_strncmp(entry->var.VariableName, efi_name_old,
ucs2_strlen(efi_name_old)))
return 0;
}
/* found */
__efivar_entry_delete(entry);
list_del(&entry->list);
return 1;
}
static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type,
struct timespec *timespec,
char **buf, struct pstore_info *psi)
{
efi_guid_t vendor = LINUX_EFI_CRASH_GUID;
struct efivars *efivars = psi->data;
char name[DUMP_NAME_LEN];
int i;
unsigned int part, size;
unsigned long time;
while (&efivars->walk_entry->list != &efivars->list) {
if (!efi_guidcmp(efivars->walk_entry->var.VendorGuid,
vendor)) {
for (i = 0; i < DUMP_NAME_LEN; i++) {
name[i] = efivars->walk_entry->var.VariableName[i];
}
if (sscanf(name, "dump-type%u-%u-%lu", type, &part, &time) == 3) {
*id = part;
timespec->tv_sec = time;
timespec->tv_nsec = 0;
get_var_data_locked(efivars, &efivars->walk_entry->var);
size = efivars->walk_entry->var.DataSize;
*buf = kmalloc(size, GFP_KERNEL);
if (*buf == NULL)
return -ENOMEM;
memcpy(*buf, efivars->walk_entry->var.Data,
size);
efivars->walk_entry = list_entry(efivars->walk_entry->list.next,
struct efivar_entry, list);
return size;
}
}
efivars->walk_entry = list_entry(efivars->walk_entry->list.next,
struct efivar_entry, list);
}
/**
* efi_partition(struct parsed_partitions *state)
* @state
*
* Description: called from check.c, if the disk contains GPT
* partitions, sets up partition entries in the kernel.
*
* If the first block on the disk is a legacy MBR,
* it will get handled by msdos_partition().
* If it's a Protective MBR, we'll handle it here.
*
* We do not create a Linux partition for GPT, but
* only for the actual data partitions.
* Returns:
* -1 if unable to read the partition table
* 0 if this isn't our partition table
* 1 if successful
*
*/
int efi_partition(struct parsed_partitions *state)
{
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
u32 i;
unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
u8 unparsed_guid[37];
if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
kfree(gpt);
kfree(ptes);
return 0;
}
pr_debug("GUID Partition Table is valid! Yea!\n");
for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
struct partition_meta_info *info;
unsigned label_count = 0;
unsigned label_max;
u64 start = le64_to_cpu(ptes[i].starting_lba);
u64 size = le64_to_cpu(ptes[i].ending_lba) -
le64_to_cpu(ptes[i].starting_lba) + 1ULL;
if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
continue;
put_partition(state, i+1, start * ssz, size * ssz);
/* If this is a RAID volume, tell md */
if (!efi_guidcmp(ptes[i].partition_type_guid,
PARTITION_LINUX_RAID_GUID))
state->parts[i + 1].flags = ADDPART_FLAG_RAID;
info = &state->parts[i + 1].info;
/* Instead of doing a manual swap to big endian, reuse the
* common ASCII hex format as the interim.
*/
efi_guid_unparse(&ptes[i].unique_partition_guid, unparsed_guid);
part_pack_uuid(unparsed_guid, info->uuid);
/* Naively convert UTF16-LE to 7 bits. */
label_max = min(sizeof(info->volname) - 1,
sizeof(ptes[i].partition_name));
info->volname[label_max] = 0;
while (label_count < label_max) {
u8 c = ptes[i].partition_name[label_count] & 0xff;
if (c && !isprint(c))
c = '!';
info->volname[label_count] = c;
label_count++;
}
state->parts[i + 1].has_info = true;
}
/* Add static partitions for SOS and LNX if specified in kernel config (Tegra platform) */
#ifdef CONFIG_TEGRA_BOOTBLOCK_EXPOSE
printk(KERN_NOTICE "Adding SOS as MMC partition %i: offset %i bytes, size: %i bytes\n", i+1, CONFIG_BOOTBLOCK_EXPOSE_SOS_OFFSET * 512, CONFIG_BOOTBLOCK_EXPOSE_SOS_SIZE * 512);
put_partition(state, i+1, CONFIG_BOOTBLOCK_EXPOSE_SOS_OFFSET * ssz, CONFIG_BOOTBLOCK_EXPOSE_SOS_SIZE * ssz);
printk(KERN_NOTICE "Adding LNX as MMC partition %i: offset %i bytes, size: %i bytes\n", i+2, CONFIG_BOOTBLOCK_EXPOSE_LNX_OFFSET * 512, CONFIG_BOOTBLOCK_EXPOSE_LNX_SIZE * 512);
put_partition(state, i+2, CONFIG_BOOTBLOCK_EXPOSE_LNX_OFFSET * ssz, CONFIG_BOOTBLOCK_EXPOSE_LNX_SIZE * ssz);
#endif
kfree(ptes);
kfree(gpt);
strlcat(state->pp_buf, "\n", PAGE_SIZE);
return 1;
}
/**
* compare_gpts() - Search disk for valid GPT headers and PTEs
* @pgpt is the primary GPT header
* @agpt is the alternate GPT header
* @lastlba is the last LBA number
* Description: Returns nothing. Sanity checks pgpt and agpt fields
* and prints warnings on discrepancies.
*
*/
static void
compare_gpts(gpt_header *pgpt, gpt_header *agpt, u64 lastlba)
{
int error_found = 0;
if (!pgpt || !agpt)
return;
if (le64_to_cpu(pgpt->my_lba) != le64_to_cpu(agpt->alternate_lba)) {
printk(KERN_WARNING
"GPT:Primary header LBA != Alt. header alternate_lba\n");
printk(KERN_WARNING "GPT:%lld != %lld\n",
(unsigned long long)le64_to_cpu(pgpt->my_lba),
(unsigned long long)le64_to_cpu(agpt->alternate_lba));
error_found++;
}
if (le64_to_cpu(pgpt->alternate_lba) != le64_to_cpu(agpt->my_lba)) {
printk(KERN_WARNING
"GPT:Primary header alternate_lba != Alt. header my_lba\n");
printk(KERN_WARNING "GPT:%lld != %lld\n",
(unsigned long long)le64_to_cpu(pgpt->alternate_lba),
(unsigned long long)le64_to_cpu(agpt->my_lba));
error_found++;
}
if (le64_to_cpu(pgpt->first_usable_lba) !=
le64_to_cpu(agpt->first_usable_lba)) {
printk(KERN_WARNING "GPT:first_usable_lbas don't match.\n");
printk(KERN_WARNING "GPT:%lld != %lld\n",
(unsigned long long)le64_to_cpu(pgpt->first_usable_lba),
(unsigned long long)le64_to_cpu(agpt->first_usable_lba));
error_found++;
}
if (le64_to_cpu(pgpt->last_usable_lba) !=
le64_to_cpu(agpt->last_usable_lba)) {
printk(KERN_WARNING "GPT:last_usable_lbas don't match.\n");
printk(KERN_WARNING "GPT:%lld != %lld\n",
(unsigned long long)le64_to_cpu(pgpt->last_usable_lba),
(unsigned long long)le64_to_cpu(agpt->last_usable_lba));
error_found++;
}
if (efi_guidcmp(pgpt->disk_guid, agpt->disk_guid)) {
printk(KERN_WARNING "GPT:disk_guids don't match.\n");
error_found++;
}
if (le32_to_cpu(pgpt->num_partition_entries) !=
le32_to_cpu(agpt->num_partition_entries)) {
printk(KERN_WARNING "GPT:num_partition_entries don't match: "
"0x%x != 0x%x\n",
le32_to_cpu(pgpt->num_partition_entries),
le32_to_cpu(agpt->num_partition_entries));
error_found++;
}
if (le32_to_cpu(pgpt->sizeof_partition_entry) !=
le32_to_cpu(agpt->sizeof_partition_entry)) {
printk(KERN_WARNING
"GPT:sizeof_partition_entry values don't match: "
"0x%x != 0x%x\n",
le32_to_cpu(pgpt->sizeof_partition_entry),
le32_to_cpu(agpt->sizeof_partition_entry));
error_found++;
}
if (le32_to_cpu(pgpt->partition_entry_array_crc32) !=
le32_to_cpu(agpt->partition_entry_array_crc32)) {
printk(KERN_WARNING
"GPT:partition_entry_array_crc32 values don't match: "
"0x%x != 0x%x\n",
le32_to_cpu(pgpt->partition_entry_array_crc32),
le32_to_cpu(agpt->partition_entry_array_crc32));
error_found++;
}
if (le64_to_cpu(pgpt->alternate_lba) != lastlba) {
printk(KERN_WARNING
"GPT:Primary header thinks Alt. header is not at the end of the disk.\n");
printk(KERN_WARNING "GPT:%lld != %lld\n",
(unsigned long long)le64_to_cpu(pgpt->alternate_lba),
(unsigned long long)lastlba);
error_found++;
}
if (le64_to_cpu(agpt->my_lba) != lastlba) {
printk(KERN_WARNING
"GPT:Alternate GPT header not at the end of the disk.\n");
printk(KERN_WARNING "GPT:%lld != %lld\n",
(unsigned long long)le64_to_cpu(agpt->my_lba),
(unsigned long long)lastlba);
error_found++;
}
if (error_found)
printk(KERN_WARNING
"GPT: Use GNU Parted to correct GPT errors.\n");
return;
}
static int
mca_make_slidx(void *buffer, slidx_table_t *slidx)
{
int platform_err = 0;
int record_len = ((sal_log_record_header_t*)buffer)->len;
u32 ercd_pos;
int sects;
sal_log_section_hdr_t *sp;
/*
* Initialize index referring current record
*/
INIT_LIST_HEAD(&(slidx->proc_err));
INIT_LIST_HEAD(&(slidx->mem_dev_err));
INIT_LIST_HEAD(&(slidx->sel_dev_err));
INIT_LIST_HEAD(&(slidx->pci_bus_err));
INIT_LIST_HEAD(&(slidx->smbios_dev_err));
INIT_LIST_HEAD(&(slidx->pci_comp_err));
INIT_LIST_HEAD(&(slidx->plat_specific_err));
INIT_LIST_HEAD(&(slidx->host_ctlr_err));
INIT_LIST_HEAD(&(slidx->plat_bus_err));
INIT_LIST_HEAD(&(slidx->unsupported));
/*
* Extract a Record Header
*/
slidx->header = buffer;
/*
* Extract each section records
* (arranged from "int ia64_log_platform_info_print()")
*/
for (ercd_pos = sizeof(sal_log_record_header_t), sects = 0;
ercd_pos < record_len; ercd_pos += sp->len, sects++) {
sp = (sal_log_section_hdr_t *)((char*)buffer + ercd_pos);
if (!efi_guidcmp(sp->guid, SAL_PROC_DEV_ERR_SECT_GUID)) {
LOG_INDEX_ADD_SECT_PTR(slidx->proc_err, sp);
} else if (!efi_guidcmp(sp->guid, SAL_PLAT_MEM_DEV_ERR_SECT_GUID)) {
platform_err = 1;
LOG_INDEX_ADD_SECT_PTR(slidx->mem_dev_err, sp);
} else if (!efi_guidcmp(sp->guid, SAL_PLAT_SEL_DEV_ERR_SECT_GUID)) {
platform_err = 1;
LOG_INDEX_ADD_SECT_PTR(slidx->sel_dev_err, sp);
} else if (!efi_guidcmp(sp->guid, SAL_PLAT_PCI_BUS_ERR_SECT_GUID)) {
platform_err = 1;
LOG_INDEX_ADD_SECT_PTR(slidx->pci_bus_err, sp);
} else if (!efi_guidcmp(sp->guid, SAL_PLAT_SMBIOS_DEV_ERR_SECT_GUID)) {
platform_err = 1;
LOG_INDEX_ADD_SECT_PTR(slidx->smbios_dev_err, sp);
} else if (!efi_guidcmp(sp->guid, SAL_PLAT_PCI_COMP_ERR_SECT_GUID)) {
platform_err = 1;
LOG_INDEX_ADD_SECT_PTR(slidx->pci_comp_err, sp);
} else if (!efi_guidcmp(sp->guid, SAL_PLAT_SPECIFIC_ERR_SECT_GUID)) {
platform_err = 1;
LOG_INDEX_ADD_SECT_PTR(slidx->plat_specific_err, sp);
} else if (!efi_guidcmp(sp->guid, SAL_PLAT_HOST_CTLR_ERR_SECT_GUID)) {
platform_err = 1;
LOG_INDEX_ADD_SECT_PTR(slidx->host_ctlr_err, sp);
} else if (!efi_guidcmp(sp->guid, SAL_PLAT_BUS_ERR_SECT_GUID)) {
platform_err = 1;
LOG_INDEX_ADD_SECT_PTR(slidx->plat_bus_err, sp);
} else {
LOG_INDEX_ADD_SECT_PTR(slidx->unsupported, sp);
}
}
slidx->n_sections = sects;
return platform_err;
}
/**
* efi_partition(struct parsed_partitions *state, struct block_device *bdev)
* @state
* @bdev
*
* Description: called from check.c, if the disk contains GPT
* partitions, sets up partition entries in the kernel.
*
* If the first block on the disk is a legacy MBR,
* it will get handled by msdos_partition().
* If it's a Protective MBR, we'll handle it here.
*
* We do not create a Linux partition for GPT, but
* only for the actual data partitions.
* Returns:
* -1 if unable to read the partition table
* 0 if this isn't our partition table
* 1 if successful
*
*/
int
efi_partition(struct parsed_partitions *state, struct block_device *bdev)
{
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
u32 i;
unsigned ssz = bdev_logical_block_size(bdev) / 512;
u8 unparsed_guid[37];
if (!find_valid_gpt(bdev, &gpt, &ptes) || !gpt || !ptes) {
kfree(gpt);
kfree(ptes);
return 0;
}
pr_debug("GUID Partition Table is valid! Yea!\n");
for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
struct partition_meta_info *info;
unsigned label_count = 0;
unsigned label_max;
u64 start = le64_to_cpu(ptes[i].starting_lba);
u64 size = le64_to_cpu(ptes[i].ending_lba) -
le64_to_cpu(ptes[i].starting_lba) + 1ULL;
if (!is_pte_valid(&ptes[i], last_lba(bdev)))
continue;
put_partition(state, i+1, start * ssz, size * ssz);
/* If this is a RAID volume, tell md */
if (!efi_guidcmp(ptes[i].partition_type_guid,
PARTITION_LINUX_RAID_GUID))
state->parts[i+1].flags = 1;
info = &state->parts[i + 1].info;
/* The EFI specification diverges from RFC 4122 with respect to
* the packed storage of its UUIDs. efi_guid_unparse unpacks to
* a common ASCII representation, which allows part_pack_uuid to
* pack it in the standard big endian layout for use by the rest
* of the kernel.
*/
efi_guid_unparse(&ptes[i].unique_partition_guid, unparsed_guid);
part_pack_uuid(unparsed_guid, info->uuid);
/* Naively convert UTF16-LE to 7 bits. */
label_max = min(sizeof(info->volname) - 1,
sizeof(ptes[i].partition_name));
info->volname[label_max] = 0;
while (label_count < label_max) {
u8 c = ptes[i].partition_name[label_count] & 0xff;
if (c && !isprint(c))
c = '!';
info->volname[label_count] = c;
label_count++;
}
state->parts[i + 1].has_info = true;
}
kfree(ptes);
kfree(gpt);
printk("\n");
return 1;
}
/**
* compare_gpts() - Search disk for valid GPT headers and PTEs
* @pgpt is the primary GPT header
* @agpt is the alternate GPT header
* @lastlba is the last LBA number
* Description: Returns nothing. Sanity checks pgpt and agpt fields
* and prints warnings on discrepancies.
*
*/
static void
compare_gpts(gpt_header *pgpt, gpt_header *agpt, uint64_t lastlba)
{
int error_found = 0;
if (!pgpt || !agpt)
return;
if (__le64_to_cpu(pgpt->my_lba) != __le64_to_cpu(agpt->alternate_lba)) {
fprintf(stderr,
"GPT:Primary header LBA != Alt. header alternate_lba\n");
fprintf(stderr, "GPT:%" PRIx64 "x != %" PRIx64 "x\n",
__le64_to_cpu(pgpt->my_lba),
__le64_to_cpu(agpt->alternate_lba));
error_found++;
}
if (__le64_to_cpu(pgpt->alternate_lba) != __le64_to_cpu(agpt->my_lba)) {
fprintf(stderr,
"GPT:Primary header alternate_lba != Alt. header my_lba\n");
fprintf(stderr, "GPT:%" PRIx64 " != %" PRIx64 "\n",
__le64_to_cpu(pgpt->alternate_lba),
__le64_to_cpu(agpt->my_lba));
error_found++;
}
if (__le64_to_cpu(pgpt->first_usable_lba) !=
__le64_to_cpu(agpt->first_usable_lba)) {
fprintf(stderr, "GPT:first_usable_lbas don't match.\n");
fprintf(stderr, "GPT:%" PRIx64 " != %" PRIx64 "\n",
__le64_to_cpu(pgpt->first_usable_lba),
__le64_to_cpu(agpt->first_usable_lba));
error_found++;
}
if (__le64_to_cpu(pgpt->last_usable_lba) !=
__le64_to_cpu(agpt->last_usable_lba)) {
fprintf(stderr, "GPT:last_usable_lbas don't match.\n");
fprintf(stderr, "GPT:%" PRIx64 " != %" PRIx64 "\n",
__le64_to_cpu(pgpt->last_usable_lba),
__le64_to_cpu(agpt->last_usable_lba));
error_found++;
}
if (efi_guidcmp(pgpt->disk_guid, agpt->disk_guid)) {
fprintf(stderr, "GPT:disk_guids don't match.\n");
error_found++;
}
if (__le32_to_cpu(pgpt->num_partition_entries) !=
__le32_to_cpu(agpt->num_partition_entries)) {
fprintf(stderr, "GPT:num_partition_entries don't match: "
"0x%x != 0x%x\n",
__le32_to_cpu(pgpt->num_partition_entries),
__le32_to_cpu(agpt->num_partition_entries));
error_found++;
}
if (__le32_to_cpu(pgpt->sizeof_partition_entry) !=
__le32_to_cpu(agpt->sizeof_partition_entry)) {
fprintf(stderr,
"GPT:sizeof_partition_entry values don't match: "
"0x%x != 0x%x\n",
__le32_to_cpu(pgpt->sizeof_partition_entry),
__le32_to_cpu(agpt->sizeof_partition_entry));
error_found++;
}
if (__le32_to_cpu(pgpt->partition_entry_array_crc32) !=
__le32_to_cpu(agpt->partition_entry_array_crc32)) {
fprintf(stderr,
"GPT:partition_entry_array_crc32 values don't match: "
"0x%x != 0x%x\n",
__le32_to_cpu(pgpt->partition_entry_array_crc32),
__le32_to_cpu(agpt->partition_entry_array_crc32));
error_found++;
}
if (__le64_to_cpu(pgpt->alternate_lba) != lastlba) {
fprintf(stderr,
"GPT:Primary header thinks Alt. header is not at the end of the disk.\n");
fprintf(stderr, "GPT:%" PRIx64 " != %" PRIx64 "\n",
__le64_to_cpu(pgpt->alternate_lba), lastlba);
error_found++;
}
if (__le64_to_cpu(agpt->my_lba) != lastlba) {
fprintf(stderr,
"GPT:Alternate GPT header not at the end of the disk.\n");
fprintf(stderr, "GPT:%" PRIx64 " != %" PRIx64 "\n",
__le64_to_cpu(agpt->my_lba), lastlba);
error_found++;
}
if (error_found)
fprintf(stderr,
"GPT: Use GNU Parted to correct GPT errors.\n");
return;
}
/**
* efi_partition(struct parsed_partitions *state)
* @state
*
* Description: called from check.c, if the disk contains GPT
* partitions, sets up partition entries in the kernel.
*
* If the first block on the disk is a legacy MBR,
* it will get handled by msdos_partition().
* If it's a Protective MBR, we'll handle it here.
*
* We do not create a Linux partition for GPT, but
* only for the actual data partitions.
* Returns:
* -1 if unable to read the partition table
* 0 if this isn't our partition table
* 1 if successful
*
*/
int efi_partition(struct parsed_partitions *state)
{
char* partition_name = NULL;
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
u32 i;
unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
u8 unparsed_guid[37];
partition_name = kzalloc(sizeof(ptes->partition_name), GFP_KERNEL);
if (!partition_name)
return 0;
if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
kfree(gpt);
kfree(ptes);
kfree(partition_name);
return 0;
}
pr_debug("GUID Partition Table is valid! Yea!\n");
for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
int partition_name_len;
struct partition_meta_info *info;
unsigned label_count = 0;
unsigned label_max;
u64 start = le64_to_cpu(ptes[i].starting_lba);
u64 size = le64_to_cpu(ptes[i].ending_lba) -
le64_to_cpu(ptes[i].starting_lba) + 1ULL;
if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
continue;
partition_name_len = utf16s_to_utf8s(ptes[i].partition_name,
sizeof(ptes[i].partition_name),
UTF16_LITTLE_ENDIAN,
partition_name,
sizeof(ptes[i].partition_name));
#ifdef CONFIG_APANIC_ON_MMC
if(strncmp(partition_name,CONFIG_APANIC_PLABEL,partition_name_len) == 0) {
apanic_partition_start = start * ssz;
apanic_partition_size = size * ssz;
pr_debug("apanic partition found starts at %lu \r\n",
apanic_partition_start);
pr_debug("apanic partition size = %lu\n",
apanic_partition_size);
}
#endif
put_partition(state, i+1, start * ssz, size * ssz);
/* If this is a RAID volume, tell md */
if (!efi_guidcmp(ptes[i].partition_type_guid,
PARTITION_LINUX_RAID_GUID))
state->parts[i + 1].flags = ADDPART_FLAG_RAID;
info = &state->parts[i + 1].info;
/* Instead of doing a manual swap to big endian, reuse the
* common ASCII hex format as the interim.
*/
efi_guid_unparse(&ptes[i].unique_partition_guid, unparsed_guid);
part_pack_uuid(unparsed_guid, info->uuid);
/* Naively convert UTF16-LE to 7 bits. */
label_max = min(sizeof(info->volname) - 1,
sizeof(ptes[i].partition_name));
info->volname[label_max] = 0;
while (label_count < label_max) {
u8 c = ptes[i].partition_name[label_count] & 0xff;
if (c && !isprint(c))
c = '!';
info->volname[label_count] = c;
label_count++;
}
state->parts[i + 1].has_info = true;
#ifdef CONFIG_APANIC_ON_MMC
if(strncmp(info->volname,CONFIG_APANIC_PLABEL,label_count) == 0) {
apanic_partition_start = start * ssz;
pr_debug("apanic partition found starts at %lu \r\n", apanic_partition_start);
}
#endif
}
kfree(ptes);
kfree(gpt);
kfree(partition_name);
strlcat(state->pp_buf, "\n", PAGE_SIZE);
return 1;
}
/**
* efi_partition(struct parsed_partitions *state)
* @state
*
* Description: called from check.c, if the disk contains GPT
* partitions, sets up partition entries in the kernel.
*
* If the first block on the disk is a legacy MBR,
* it will get handled by msdos_partition().
* If it's a Protective MBR, we'll handle it here.
*
* We do not create a Linux partition for GPT, but
* only for the actual data partitions.
* Returns:
* -1 if unable to read the partition table
* 0 if this isn't our partition table
* 1 if successful
*
*/
int efi_partition(struct parsed_partitions *state)
{
char* partition_name = NULL;
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
u32 i;
unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
partition_name = kzalloc(sizeof(ptes->partition_name), GFP_KERNEL);
if (!partition_name)
return 0;
if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
kfree(gpt);
kfree(ptes);
kfree(partition_name);
return 0;
}
pr_debug("GUID Partition Table is valid! Yea!\n");
proc_create("emmc", 0666, NULL, &emmc_partition_fops);
gpt_info.num_of_partitions = le32_to_cpu(gpt->num_partition_entries);
gpt_info.erase_size = bdev_erase_size(state->bdev) * ssz;
/*
* Not certain if there is a chance this function is called again with
* a different GPT. In case there is, free previously allocated memory
*/
kfree(gpt_info.partitions);
gpt_info.partitions = kzalloc(gpt_info.num_of_partitions
* sizeof(*gpt_info.partitions), GFP_KERNEL);
for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
int partition_name_len;
struct partition_meta_info *info;
unsigned label_count = 0;
unsigned label_max;
u64 start = le64_to_cpu(ptes[i].starting_lba);
u64 size = le64_to_cpu(ptes[i].ending_lba) -
le64_to_cpu(ptes[i].starting_lba) + 1ULL;
gpt_info.partitions[i].size = size * ssz;
if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
continue;
partition_name_len = utf16s_to_utf8s(ptes[i].partition_name,
sizeof(ptes[i].partition_name),
UTF16_LITTLE_ENDIAN,
partition_name,
sizeof(ptes[i].partition_name));
#ifdef CONFIG_APANIC_ON_MMC
if(strncmp(partition_name,CONFIG_APANIC_PLABEL,partition_name_len) == 0) {
apanic_partition_start = start * ssz;
apanic_partition_size = size * ssz;
pr_debug("apanic partition found starts at %lu \r\n",
apanic_partition_start);
pr_debug("apanic partition size = %lu\n",
apanic_partition_size);
}
#endif
put_partition(state, i+1, start * ssz, size * ssz);
/* If this is a RAID volume, tell md */
if (!efi_guidcmp(ptes[i].partition_type_guid,
PARTITION_LINUX_RAID_GUID))
state->parts[i + 1].flags = ADDPART_FLAG_RAID;
info = &state->parts[i + 1].info;
efi_guid_unparse(&ptes[i].unique_partition_guid, info->uuid);
/* Naively convert UTF16-LE to 7 bits. */
label_max = min(sizeof(info->volname) - 1,
sizeof(ptes[i].partition_name));
info->volname[label_max] = 0;
while (label_count < label_max) {
u8 c = ptes[i].partition_name[label_count] & 0xff;
if (c && !isprint(c))
c = '!';
info->volname[label_count] = c;
if (label_count <= partition_name_len)
gpt_info.partitions[i].volname[label_count] = c;
label_count++;
}
state->parts[i + 1].has_info = true;
#ifdef CONFIG_APANIC_ON_MMC
if(strncmp(info->volname,CONFIG_APANIC_PLABEL,label_count) == 0) {
apanic_partition_start = start * ssz;
pr_debug("apanic partition found starts at %lu \r\n", apanic_partition_start);
}
#endif
}
kfree(ptes);
kfree(gpt);
kfree(partition_name);
strlcat(state->pp_buf, "\n", PAGE_SIZE);
return 1;
}
/**
* find_valid_gpt() - Search disk for valid GPT headers and PTEs
* @state
* @gpt is a GPT header ptr, filled on return.
* @ptes is a PTEs ptr, filled on return.
* Description: Returns 1 if valid, 0 on error.
* If valid, returns pointers to newly allocated GPT header and PTEs.
* Validity depends on PMBR being valid (or being overridden by the
* 'gpt' kernel command line option) and finding either the Primary
* GPT header and PTEs valid, or the Alternate GPT header and PTEs
* valid. If the Primary GPT header is not valid, the Alternate GPT header
* is not checked unless the 'gpt' kernel command line option is passed.
* This protects against devices which misreport their size, and forces
* the user to decide to use the Alternate GPT.
*/
static int find_valid_gpt(struct parsed_partitions *state, gpt_header **gpt,
gpt_entry **ptes)
{
int good_pgpt = 0, good_agpt = 0, good_pmbr = 0;
gpt_header *pgpt = NULL, *agpt = NULL;
gpt_entry *pptes = NULL, *aptes = NULL;
legacy_mbr *legacymbr;
u64 lastlba;
if (!ptes)
return 0;
lastlba = last_lba(state->bdev);
#if 0 // merged from msm8960-gb by ZTE_BOOT_JIA_20120105 jia.jia
if (!force_gpt) {
#else
if (force_gpt) {
#endif
/* This will be added to the EFI Spec. per Intel after v1.02. */
legacymbr = kzalloc(sizeof (*legacymbr), GFP_KERNEL);
if (legacymbr) {
read_lba(state, 0, (u8 *) legacymbr,
sizeof (*legacymbr));
good_pmbr = is_pmbr_valid(legacymbr);
kfree(legacymbr);
}
if (!good_pmbr)
goto fail;
}
good_pgpt = is_gpt_valid(state, GPT_PRIMARY_PARTITION_TABLE_LBA,
&pgpt, &pptes);
if (good_pgpt)
good_agpt = is_gpt_valid(state,
le64_to_cpu(pgpt->alternate_lba),
&agpt, &aptes);
if (!good_agpt && force_gpt)
good_agpt = is_gpt_valid(state, lastlba, &agpt, &aptes);
/* The obviously unsuccessful case */
if (!good_pgpt && !good_agpt)
goto fail;
compare_gpts(pgpt, agpt, lastlba);
/* The good cases */
if (good_pgpt) {
*gpt = pgpt;
*ptes = pptes;
kfree(agpt);
kfree(aptes);
if (!good_agpt) {
printk(KERN_WARNING
"Alternate GPT is invalid, "
"using primary GPT.\n");
}
return 1;
}
else if (good_agpt) {
*gpt = agpt;
*ptes = aptes;
kfree(pgpt);
kfree(pptes);
printk(KERN_WARNING
"Primary GPT is invalid, using alternate GPT.\n");
return 1;
}
fail:
kfree(pgpt);
kfree(agpt);
kfree(pptes);
kfree(aptes);
*gpt = NULL;
*ptes = NULL;
return 0;
}
/**
* efi_partition(struct parsed_partitions *state)
* @state
*
* Description: called from check.c, if the disk contains GPT
* partitions, sets up partition entries in the kernel.
*
* If the first block on the disk is a legacy MBR,
* it will get handled by msdos_partition().
* If it's a Protective MBR, we'll handle it here.
*
* We do not create a Linux partition for GPT, but
* only for the actual data partitions.
* Returns:
* -1 if unable to read the partition table
* 0 if this isn't our partition table
* 1 if successful
*
*/
int efi_partition(struct parsed_partitions *state)
{
gpt_header *gpt = NULL;
gpt_entry *ptes = NULL;
u32 i;
unsigned ssz = bdev_logical_block_size(state->bdev) / 512;
u8 unparsed_guid[37];
if (!find_valid_gpt(state, &gpt, &ptes) || !gpt || !ptes) {
kfree(gpt);
kfree(ptes);
return 0;
}
pr_debug("GUID Partition Table is valid! Yea!\n");
for (i = 0; i < le32_to_cpu(gpt->num_partition_entries) && i < state->limit-1; i++) {
struct partition_meta_info *info;
unsigned label_count = 0;
unsigned label_max;
u64 start = le64_to_cpu(ptes[i].starting_lba);
u64 size = le64_to_cpu(ptes[i].ending_lba) -
le64_to_cpu(ptes[i].starting_lba) + 1ULL;
if (!is_pte_valid(&ptes[i], last_lba(state->bdev)))
continue;
put_partition(state, i+1, start * ssz, size * ssz);
/* If this is a RAID volume, tell md */
if (!efi_guidcmp(ptes[i].partition_type_guid,
PARTITION_LINUX_RAID_GUID))
state->parts[i + 1].flags = ADDPART_FLAG_RAID;
info = &state->parts[i + 1].info;
/* Instead of doing a manual swap to big endian, reuse the
* common ASCII hex format as the interim.
*/
efi_guid_unparse(&ptes[i].unique_partition_guid, unparsed_guid);
part_pack_uuid(unparsed_guid, info->uuid);
/* Naively convert UTF16-LE to 7 bits. */
label_max = min(sizeof(info->volname) - 1,
sizeof(ptes[i].partition_name));
info->volname[label_max] = 0;
while (label_count < label_max) {
u8 c = ptes[i].partition_name[label_count] & 0xff;
if (c && !isprint(c))
c = '!';
info->volname[label_count] = c;
label_count++;
}
state->parts[i + 1].has_info = true;
}
kfree(ptes);
kfree(gpt);
strlcat(state->pp_buf, "\n", PAGE_SIZE);
return 1;
}
/**
* compare_gpts() - Search disk for valid GPT headers and PTEs
* @pgpt is the primary GPT header
* @agpt is the alternate GPT header
* @lastlba is the last LBA number
* Description: Returns nothing. Sanity checks pgpt and agpt fields
* and prints warnings on discrepancies.
*
*/
static void
compare_gpts(gpt_header *pgpt, gpt_header *agpt, u64 lastlba)
{
int error_found = 0;
if (!pgpt || !agpt)
return;
if (le64_to_cpu(pgpt->my_lba) != le64_to_cpu(agpt->alternate_lba)) {
// printk(KERN_WARNING
;
// printk(KERN_WARNING "GPT:%lld != %lld\n",
// (unsigned long long)le64_to_cpu(pgpt->my_lba),
;
error_found++;
}
if (le64_to_cpu(pgpt->alternate_lba) != le64_to_cpu(agpt->my_lba)) {
// printk(KERN_WARNING
;
// printk(KERN_WARNING "GPT:%lld != %lld\n",
// (unsigned long long)le64_to_cpu(pgpt->alternate_lba),
;
error_found++;
}
if (le64_to_cpu(pgpt->first_usable_lba) !=
le64_to_cpu(agpt->first_usable_lba)) {
;
// printk(KERN_WARNING "GPT:%lld != %lld\n",
// (unsigned long long)le64_to_cpu(pgpt->first_usable_lba),
;
error_found++;
}
if (le64_to_cpu(pgpt->last_usable_lba) !=
le64_to_cpu(agpt->last_usable_lba)) {
;
// printk(KERN_WARNING "GPT:%lld != %lld\n",
// (unsigned long long)le64_to_cpu(pgpt->last_usable_lba),
;
error_found++;
}
if (efi_guidcmp(pgpt->disk_guid, agpt->disk_guid)) {
;
error_found++;
}
if (le32_to_cpu(pgpt->num_partition_entries) !=
le32_to_cpu(agpt->num_partition_entries)) {
// printk(KERN_WARNING "GPT:num_partition_entries don't match: "
// "0x%x != 0x%x\n",
// le32_to_cpu(pgpt->num_partition_entries),
;
error_found++;
}
if (le32_to_cpu(pgpt->sizeof_partition_entry) !=
le32_to_cpu(agpt->sizeof_partition_entry)) {
// printk(KERN_WARNING
// "GPT:sizeof_partition_entry values don't match: "
// "0x%x != 0x%x\n",
// le32_to_cpu(pgpt->sizeof_partition_entry),
;
error_found++;
}
if (le32_to_cpu(pgpt->partition_entry_array_crc32) !=
le32_to_cpu(agpt->partition_entry_array_crc32)) {
// printk(KERN_WARNING
// "GPT:partition_entry_array_crc32 values don't match: "
// "0x%x != 0x%x\n",
// le32_to_cpu(pgpt->partition_entry_array_crc32),
;
error_found++;
}
if (le64_to_cpu(pgpt->alternate_lba) != lastlba) {
// printk(KERN_WARNING
;
// printk(KERN_WARNING "GPT:%lld != %lld\n",
// (unsigned long long)le64_to_cpu(pgpt->alternate_lba),
;
error_found++;
}
if (le64_to_cpu(agpt->my_lba) != lastlba) {
// printk(KERN_WARNING
;
// printk(KERN_WARNING "GPT:%lld != %lld\n",
// (unsigned long long)le64_to_cpu(agpt->my_lba),
;
error_found++;
}
if (error_found)
// printk(KERN_WARNING
;
return;
}
/*
* This is kind of ugly, but older rev HCDP tables don't provide interrupt
* polarity and trigger information. Linux/ia64 discovers these properties
* later via ACPI names, but we don't have that luxury in Xen/ia64. Since
* all future platforms should have newer PCDP tables, this should be a
* fixed list of boxes in the field, so we can hardcode based on the model.
*/
static void __init
pcdp_hp_irq_fixup(struct pcdp *pcdp, struct pcdp_uart *uart)
{
efi_system_table_t *systab;
efi_config_table_t *tables;
struct acpi20_table_rsdp *rsdp = NULL;
struct acpi_table_xsdt *xsdt;
struct acpi_table_header *hdr;
int i;
if (pcdp->rev >= 3 || strcmp((char *)pcdp->oemid, "HP"))
return;
/*
* Manually walk firmware provided tables to get to the XSDT.
* The OEM table ID on the XSDT is the platform model string.
* We only care about ACPI 2.0 tables as that's all HP provides.
*/
systab = __va(ia64_boot_param->efi_systab);
if (!systab || systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
return;
tables = __va(systab->tables);
for (i = 0 ; i < (int)systab->nr_tables && !rsdp ; i++) {
if (efi_guidcmp(tables[i].guid, ACPI_20_TABLE_GUID) == 0)
rsdp =
(struct acpi20_table_rsdp *)__va(tables[i].table);
}
if (!rsdp || strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1))
return;
xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_address);
hdr = &xsdt->header;
if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1))
return;
/* Sanity check; are we still looking at HP firmware tables? */
if (strcmp(hdr->oem_id, "HP"))
return;
if (!strcmp(hdr->oem_table_id, "zx2000") ||
!strcmp(hdr->oem_table_id, "zx6000") ||
!strcmp(hdr->oem_table_id, "rx2600") ||
!strcmp(hdr->oem_table_id, "cx2600")) {
ns16550_com1.irq = ns16550_com1_gsi = uart->gsi;
ns16550_com1_polarity = IOSAPIC_POL_HIGH;
ns16550_com1_trigger = IOSAPIC_EDGE;
} else if (!strcmp(hdr->oem_table_id, "rx2620") ||
!strcmp(hdr->oem_table_id, "cx2620") ||
!strcmp(hdr->oem_table_id, "rx1600") ||
!strcmp(hdr->oem_table_id, "rx1620")) {
ns16550_com1.irq = ns16550_com1_gsi = uart->gsi;
ns16550_com1_polarity = IOSAPIC_POL_LOW;
ns16550_com1_trigger = IOSAPIC_LEVEL;
}
}
