grub/disk/powerpc/ieee1275/ofdisk.c
hollisb 09f9923fbb 2005-07-12 Hollis Blanchard <hollis@penguinppc.org>
* disk/powerpc/ieee1275/ofdisk.c (grub_ofdisk_open): dprintf the
	device path and resulting ihandle.
	(grub_ofdisk_close): dprintf the ihandle being closed.
	(grub_ofdisk_read): dprintf function parameters.
	* kern/mm.c (grub_mm_init_region): Likewise.
	* loader/powerpc/ieee1275/linux.c: Remove extra whitespace.
	(grub_linux_boot): dprintf the Linux entry point, initrd address and
	size, and boot arguments.
	(grub_rescue_cmd_linux): dprintf each ELF segment's address and size
	before loading into memory.
	(grub_rescue_cmd_initrd): dprintf the initrd's address and size
	before loading into memory.
2005-07-12 22:36:43 +00:00

182 lines
5.1 KiB
C

/* ofdisk.c - Open Firmware disk access. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2004 Free Software Foundation, Inc.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/misc.h>
#include <grub/disk.h>
#include <grub/mm.h>
#include <grub/machine/ieee1275.h>
#include <grub/machine/ofdisk.h>
static int
grub_ofdisk_iterate (int (*hook) (const char *name))
{
auto int dev_iterate (struct grub_ieee1275_devalias *alias);
int dev_iterate (struct grub_ieee1275_devalias *alias)
{
if (! grub_strcmp (alias->type, "block"))
hook (alias->name);
else if ((! grub_strcmp (alias->type, "scsi"))
|| (! grub_strcmp (alias->type, "ide"))
|| (! grub_strcmp (alias->type, "ata")))
/* Search for block-type children of these bus controllers. */
grub_children_iterate (alias->name, dev_iterate);
return 0;
}
grub_devalias_iterate (dev_iterate);
return 0;
}
static grub_err_t
grub_ofdisk_open (const char *name, grub_disk_t disk)
{
grub_ieee1275_phandle_t dev;
grub_ieee1275_ihandle_t dev_ihandle = 0;
char *devpath;
/* XXX: This should be large enough for any possible case. */
char prop[64];
int actual;
devpath = grub_strndup (name, grub_strlen (name) + 2);
if (! devpath)
return grub_errno;
/* To access the complete disk add `:0'. */
if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_NO_PARTITION_0))
grub_strcat (devpath, ":0");
grub_dprintf ("disk", "Opening `%s'.\n", devpath);
grub_ieee1275_open (devpath, &dev_ihandle);
if (! dev_ihandle)
{
grub_error (GRUB_ERR_UNKNOWN_DEVICE, "Can't open device");
goto fail;
}
grub_dprintf ("disk", "Opened `%s' as handle 0x%x.\n", devpath, dev_ihandle);
if (grub_ieee1275_finddevice (devpath, &dev))
{
grub_error (GRUB_ERR_UNKNOWN_DEVICE, "Can't read device properties");
goto fail;
}
if (grub_ieee1275_get_property (dev, "device_type", prop, sizeof (prop),
&actual))
{
grub_error (GRUB_ERR_BAD_DEVICE, "Can't read the device type");
goto fail;
}
if (grub_strcmp (prop, "block"))
{
grub_error (GRUB_ERR_BAD_DEVICE, "Not a block device");
goto fail;
}
/* XXX: There is no property to read the number of blocks. There
should be a property `#blocks', but it is not there. Perhaps it
is possible to use seek for this. */
disk->total_sectors = 0xFFFFFFFFUL;
/* XXX: Is it ok to use this? Perhaps it is better to use the path
or some property. */
disk->id = dev;
/* XXX: Read this, somehow. */
disk->has_partitions = 1;
disk->data = (void *) dev_ihandle;
fail:
if (grub_errno && dev_ihandle)
grub_ieee1275_close (dev_ihandle);
grub_free (devpath);
return grub_errno;
}
static void
grub_ofdisk_close (grub_disk_t disk)
{
grub_dprintf ("disk", "Closing handle 0x%x.\n",
(grub_ieee1275_ihandle_t) disk->data);
grub_ieee1275_close ((grub_ieee1275_ihandle_t) disk->data);
}
static grub_err_t
grub_ofdisk_read (grub_disk_t disk, unsigned long sector,
unsigned long size, char *buf)
{
int status;
int actual;
unsigned long long pos;
grub_dprintf ("disk",
"Reading handle 0x%x: sector 0x%lx, size 0x%lx, buf %p.\n",
(grub_ieee1275_ihandle_t) disk->data, sector, size, buf);
pos = (unsigned long long) sector * 512UL;
grub_ieee1275_seek ((grub_ieee1275_ihandle_t) disk->data, (int) (pos >> 32),
(int) pos & 0xFFFFFFFFUL, &status);
if (status != 0)
return grub_error (GRUB_ERR_READ_ERROR,
"Seek error, can't seek block %d", sector);
grub_ieee1275_read ((grub_ieee1275_ihandle_t) disk->data, buf,
size * 512UL, &actual);
if (actual != actual)
return grub_error (GRUB_ERR_READ_ERROR, "Read error on block: %d", sector);
return 0;
}
static grub_err_t
grub_ofdisk_write (grub_disk_t disk __attribute ((unused)),
unsigned long sector __attribute ((unused)),
unsigned long size __attribute ((unused)),
const char *buf __attribute ((unused)))
{
return GRUB_ERR_NOT_IMPLEMENTED_YET;
}
static struct grub_disk_dev grub_ofdisk_dev =
{
.name = "ofdisk",
.id = GRUB_DISK_DEVICE_OFDISK_ID,
.iterate = grub_ofdisk_iterate,
.open = grub_ofdisk_open,
.close = grub_ofdisk_close,
.read = grub_ofdisk_read,
.write = grub_ofdisk_write,
.next = 0
};
void
grub_ofdisk_init (void)
{
grub_disk_dev_register (&grub_ofdisk_dev);
}
void
grub_ofdisk_fini (void)
{
grub_disk_dev_unregister (&grub_ofdisk_dev);
}