214 lines
7.2 KiB
C
214 lines
7.2 KiB
C
/* cmain.c - Startup code for the PowerPC. */
|
||
/*
|
||
* GRUB -- GRand Unified Bootloader
|
||
* Copyright (C) 2003,2004,2005,2006,2007,2008 Free Software Foundation, Inc.
|
||
*
|
||
* GRUB 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 3 of the License, or
|
||
* (at your option) any later version.
|
||
*
|
||
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
#include <grub/kernel.h>
|
||
#include <grub/misc.h>
|
||
#include <grub/types.h>
|
||
#include <grub/ieee1275/ieee1275.h>
|
||
|
||
int (*grub_ieee1275_entry_fn) (void *);
|
||
|
||
grub_ieee1275_phandle_t grub_ieee1275_chosen;
|
||
grub_ieee1275_ihandle_t grub_ieee1275_mmu;
|
||
|
||
static grub_uint32_t grub_ieee1275_flags;
|
||
|
||
|
||
|
||
int
|
||
grub_ieee1275_test_flag (enum grub_ieee1275_flag flag)
|
||
{
|
||
return (grub_ieee1275_flags & (1 << flag));
|
||
}
|
||
|
||
void
|
||
grub_ieee1275_set_flag (enum grub_ieee1275_flag flag)
|
||
{
|
||
grub_ieee1275_flags |= (1 << flag);
|
||
}
|
||
|
||
static void
|
||
grub_ieee1275_find_options (void)
|
||
{
|
||
grub_ieee1275_phandle_t root;
|
||
grub_ieee1275_phandle_t options;
|
||
grub_ieee1275_phandle_t openprom;
|
||
grub_ieee1275_phandle_t bootrom;
|
||
int rc;
|
||
grub_uint32_t realmode = 0;
|
||
char tmp[256];
|
||
int is_smartfirmware = 0;
|
||
int is_olpc = 0;
|
||
int is_qemu = 0;
|
||
grub_ssize_t actual;
|
||
|
||
#ifdef __sparc__
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_PARTITION_0);
|
||
#endif
|
||
|
||
grub_ieee1275_finddevice ("/", &root);
|
||
grub_ieee1275_finddevice ("/options", &options);
|
||
grub_ieee1275_finddevice ("/openprom", &openprom);
|
||
|
||
rc = grub_ieee1275_get_integer_property (options, "real-mode?", &realmode,
|
||
sizeof realmode, 0);
|
||
if (((rc >= 0) && realmode) || (grub_ieee1275_mmu == 0))
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_REAL_MODE);
|
||
|
||
rc = grub_ieee1275_get_property (openprom, "CodeGen-copyright",
|
||
tmp, sizeof (tmp), 0);
|
||
if (rc >= 0 && !grub_strncmp (tmp, "SmartFirmware(tm)",
|
||
sizeof ("SmartFirmware(tm)") - 1))
|
||
is_smartfirmware = 1;
|
||
|
||
rc = grub_ieee1275_get_property (root, "architecture",
|
||
tmp, sizeof (tmp), 0);
|
||
if (rc >= 0 && !grub_strcmp (tmp, "OLPC"))
|
||
is_olpc = 1;
|
||
|
||
rc = grub_ieee1275_get_property (root, "model",
|
||
tmp, sizeof (tmp), 0);
|
||
if (rc >= 0 && !grub_strcmp (tmp, "Emulated PC"))
|
||
is_qemu = 1;
|
||
|
||
if (rc >= 0 && grub_strncmp (tmp, "IBM", 3) == 0)
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_TREE_SCANNING_FOR_DISKS);
|
||
|
||
/* Old Macs have no key repeat, newer ones have fully working one.
|
||
The ones inbetween when repeated key generates an escaoe sequence
|
||
only the escape is repeated. With this workaround however a fast
|
||
e.g. down arrow-ESC is perceived as down arrow-down arrow which is
|
||
also annoying but is less so than the original bug of exiting from
|
||
the current window on arrow repeat. To avoid unaffected users suffering
|
||
from this workaround match only exact models known to have this bug.
|
||
*/
|
||
if (rc >= 0 && grub_strcmp (tmp, "PowerBook3,3") == 0)
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_BROKEN_REPEAT);
|
||
|
||
rc = grub_ieee1275_get_property (root, "compatible",
|
||
tmp, sizeof (tmp), &actual);
|
||
if (rc >= 0)
|
||
{
|
||
char *ptr;
|
||
for (ptr = tmp; ptr - tmp < actual; ptr += grub_strlen (ptr) + 1)
|
||
{
|
||
if (grub_memcmp (ptr, "MacRISC", sizeof ("MacRISC") - 1) == 0
|
||
&& (ptr[sizeof ("MacRISC") - 1] == 0
|
||
|| grub_isdigit (ptr[sizeof ("MacRISC") - 1])))
|
||
{
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_BROKEN_ADDRESS_CELLS);
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_OFNET_SUFFIX);
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_VIRT_TO_REAL_BROKEN);
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_CURSORONOFF_ANSI_BROKEN);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (is_smartfirmware)
|
||
{
|
||
/* Broken in all versions */
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_BROKEN_OUTPUT);
|
||
|
||
/* There are two incompatible ways of checking the version number. Try
|
||
both. */
|
||
rc = grub_ieee1275_get_property (openprom, "SmartFirmware-version",
|
||
tmp, sizeof (tmp), 0);
|
||
if (rc < 0)
|
||
rc = grub_ieee1275_get_property (openprom, "firmware-version",
|
||
tmp, sizeof (tmp), 0);
|
||
if (rc >= 0)
|
||
{
|
||
/* It is tempting to implement a version parser to set the flags for
|
||
e.g. 1.3 and below. However, there's a special situation here.
|
||
3rd party updates which fix the partition bugs are common, and for
|
||
some reason their fixes aren't being merged into trunk. So for
|
||
example we know that 1.2 and 1.3 are broken, but there's 1.2.99
|
||
and 1.3.99 which are known good (and applying this workaround
|
||
would cause breakage). */
|
||
if (!grub_strcmp (tmp, "1.0")
|
||
|| !grub_strcmp (tmp, "1.1")
|
||
|| !grub_strcmp (tmp, "1.2")
|
||
|| !grub_strcmp (tmp, "1.3"))
|
||
{
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_PARTITION_0);
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_0_BASED_PARTITIONS);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (is_olpc)
|
||
{
|
||
/* OLPC / XO laptops have three kinds of storage devices:
|
||
|
||
- NAND flash. These are accessible via OFW callbacks, but:
|
||
- Follow strange semantics, imposed by hardware constraints.
|
||
- Its ABI is undocumented, and not stable.
|
||
They lack "device_type" property, which conveniently makes GRUB
|
||
skip them.
|
||
|
||
- USB drives. Not accessible, because OFW shuts down the controller
|
||
in order to prevent collisions with applications accessing it
|
||
directly. Even worse, attempts to access it will NOT return
|
||
control to the caller, so we have to avoid probing them.
|
||
|
||
- SD cards. These work fine.
|
||
|
||
To avoid breakage, we only need to skip USB probing. However,
|
||
since detecting SD cards is more reliable, we do that instead.
|
||
*/
|
||
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_OFDISK_SDCARD_ONLY);
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_HAS_CURSORONOFF);
|
||
}
|
||
|
||
if (is_qemu)
|
||
{
|
||
/* OpenFirmware hangs on qemu if one requests any memory below 1.5 MiB. */
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_PRE1_5M_CLAIM);
|
||
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_HAS_CURSORONOFF);
|
||
}
|
||
|
||
if (! grub_ieee1275_finddevice ("/rom/boot-rom", &bootrom))
|
||
{
|
||
rc = grub_ieee1275_get_property (bootrom, "model", tmp, sizeof (tmp), 0);
|
||
if (rc >= 0 && !grub_strncmp (tmp, "PPC Open Hack'Ware",
|
||
sizeof ("PPC Open Hack'Ware") - 1))
|
||
{
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_BROKEN_OUTPUT);
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_CANNOT_SET_COLORS);
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_CANNOT_INTERPRET);
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_FORCE_CLAIM);
|
||
grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_ANSI);
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
grub_ieee1275_init (void)
|
||
{
|
||
grub_ieee1275_finddevice ("/chosen", &grub_ieee1275_chosen);
|
||
|
||
if (grub_ieee1275_get_integer_property (grub_ieee1275_chosen, "mmu", &grub_ieee1275_mmu,
|
||
sizeof grub_ieee1275_mmu, 0) < 0)
|
||
grub_ieee1275_mmu = 0;
|
||
|
||
grub_ieee1275_find_options ();
|
||
}
|