vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

biosdisk: add verbose debug logging

Browse source
This commit is contained in:
Michael Marineau 2016-08-10 17:02:51 -07:00
parent 3d1efb83ed
commit d38d2d0fb1
1 changed files with 25 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
grub-core/disk/i386/pc/biosdisk.c
View file

@ -278,10 +278,14 @@ grub_biosdisk_call_hook (grub_disk_dev_iterate_hook_t hook, void *hook_data,
char name[10]; char name[10];
if (cd_drive && drive == cd_drive) if (cd_drive && drive == cd_drive)
return hook ("cd", hook_data); {
grub_dprintf ("biosdisk", "iterating cd\n");
return hook ("cd", hook_data);
}
grub_snprintf (name, sizeof (name), grub_snprintf (name, sizeof (name),
(drive & 0x80) ? "hd%d" : "fd%d", drive & (~0x80)); (drive & 0x80) ? "hd%d" : "fd%d", drive & (~0x80));
grub_dprintf ("biosdisk", "iterating %s\n", name);
return hook (name, hook_data); return hook (name, hook_data);
} }
@ -301,7 +305,7 @@ grub_biosdisk_iterate (grub_disk_dev_iterate_hook_t hook, void *hook_data,
if (grub_biosdisk_rw_standard (0x02, drive, 0, 0, 1, 1, if (grub_biosdisk_rw_standard (0x02, drive, 0, 0, 1, 1,
GRUB_MEMORY_MACHINE_SCRATCH_SEG) != 0) GRUB_MEMORY_MACHINE_SCRATCH_SEG) != 0)
{ {
grub_dprintf ("disk", "Read error when probing drive 0x%2x\n", drive); grub_dprintf ("biosdisk", "Read error when probing drive 0x%2x\n", drive);
break; break;
} }
@ -336,6 +340,8 @@ grub_biosdisk_open (const char *name, grub_disk_t disk)
int drive; int drive;
struct grub_biosdisk_data *data; struct grub_biosdisk_data *data;
grub_dprintf ("biosdisk", "opening %s\n", name);
drive = grub_biosdisk_get_drive (name); drive = grub_biosdisk_get_drive (name);
if (drive < 0) if (drive < 0)
return grub_errno; return grub_errno;
@ -393,6 +399,11 @@ grub_biosdisk_open (const char *name, grub_disk_t disk)
(1 << disk->log_sector_size) < drp->bytes_per_sector; (1 << disk->log_sector_size) < drp->bytes_per_sector;
disk->log_sector_size++); disk->log_sector_size++);
} }
grub_dprintf ("biosdisk",
"LBA total = 0x%llx block size = 0x%lx\n",
(unsigned long long) total_sectors,
1L << disk->log_sector_size);
} }
} }
} }
@ -428,6 +439,9 @@ grub_biosdisk_open (const char *name, grub_disk_t disk)
if (! total_sectors) if (! total_sectors)
total_sectors = ((grub_uint64_t) data->cylinders) total_sectors = ((grub_uint64_t) data->cylinders)
* data->heads * data->sectors; * data->heads * data->sectors;
grub_dprintf ("biosdisk", "C/H/S %lu/%lu/%lu\n",
data->cylinders, data->heads, data->sectors);
} }
disk->total_sectors = total_sectors; disk->total_sectors = total_sectors;
@ -440,12 +454,15 @@ grub_biosdisk_open (const char *name, grub_disk_t disk)
disk->data = data; disk->data = data;
grub_dprintf ("biosdisk", "opening %s succeeded\n", name);
return GRUB_ERR_NONE; return GRUB_ERR_NONE;
} }
static void static void
grub_biosdisk_close (grub_disk_t disk) grub_biosdisk_close (grub_disk_t disk)
{ {
grub_dprintf ("biosdisk", "closing %s\n", disk->name);
grub_free (disk->data); grub_free (disk->data);
} }
@ -577,6 +594,9 @@ static grub_err_t
grub_biosdisk_read (grub_disk_t disk, grub_disk_addr_t sector, grub_biosdisk_read (grub_disk_t disk, grub_disk_addr_t sector,
grub_size_t size, char *buf) grub_size_t size, char *buf)
{ {
grub_dprintf ("biosdisk", "reading 0x%lx sectors at 0x%llx from %s\n",
(unsigned long) size, (unsigned long long) sector, disk->name);
while (size) while (size)
{ {
grub_size_t len; grub_size_t len;
@ -607,6 +627,9 @@ grub_biosdisk_write (grub_disk_t disk, grub_disk_addr_t sector,
{ {
struct grub_biosdisk_data *data = disk->data; struct grub_biosdisk_data *data = disk->data;
grub_dprintf ("biosdisk", "writing 0x%lx sectors at 0x%llx to %s\n",
(unsigned long) size, (unsigned long long) sector, disk->name);
if (data->flags & GRUB_BIOSDISK_FLAG_CDROM) if (data->flags & GRUB_BIOSDISK_FLAG_CDROM)
return grub_error (GRUB_ERR_IO, N_("cannot write to CD-ROM")); return grub_error (GRUB_ERR_IO, N_("cannot write to CD-ROM"));