Add a new disk driver called obdisk for IEEE1275 platforms. Currently
the only platform using this disk driver is SPARC, however other IEEE1275
platforms could start using it if they so choose. While the functionality
within the current IEEE1275 ofdisk driver may be suitable for PPC and x86, it
presented too many problems on SPARC hardware.
Within the old ofdisk, there is not a way to determine the true canonical
name for the disk. Within Open Boot, the same disk can have multiple names
but all reference the same disk. For example the same disk can be referenced
by its SAS WWN, using this form:
/pci@302/pci@2/pci@0/pci@17/LSI,sas@0/disk@w5000cca02f037d6d,0
It can also be referenced by its PHY identifier using this form:
/pci@302/pci@2/pci@0/pci@17/LSI,sas@0/disk@p0
It can also be referenced by its Target identifier using this form:
/pci@302/pci@2/pci@0/pci@17/LSI,sas@0/disk@0
Also, when the LUN=0, it is legal to omit the ,0 from the device name. So with
the disk above, before taking into account the device aliases, there are 6 ways
to reference the same disk.
Then it is possible to have 0 .. n device aliases all representing the same disk.
Within this new driver the true canonical name is determined using the the
IEEE1275 encode-unit and decode-unit commands when address_cells == 4. This
will determine the true single canonical name for the device so multiple ihandles
are not opened for the same device. This is what frequently happens with the old
ofdisk driver. With some devices when they are opened multiple times it causes
the entire system to hang.
Another problem solved with this driver is devices that do not have a device
alias can be booted and used within GRUB. Within the old ofdisk, this was not
possible, unless it was the original boot device. All devices behind a SAS
or SCSI parent can be found. Within the old ofdisk, finding these disks
relied on there being an alias defined. The alias requirement is not
necessary with this new driver. It can also find devices behind a parent
after they have been hot-plugged. This is something that is not possible
with the old ofdisk driver.
The old ofdisk driver also incorrectly assumes that the device pointing to by a
device alias is in its true canonical form. This assumption is never made with
this new driver.
Another issue solved with this driver is that it properly caches the ihandle
for all open devices. The old ofdisk tries to do this by caching the last
opened ihandle. However this does not work properly because the layer above
does not use a consistent device name for the same disk when calling into the
driver. This is because the upper layer uses the bootpath value returned within
/chosen, other times it uses the device alias, and other times it uses the
value within grub.cfg. It does not have a way to figure out that these devices
are the same disk. This is not a problem with this new driver.
Due to the way GRUB repeatedly opens and closes the same disk. Caching the
ihandle is important on SPARC. Without caching, some SAS devices can take
15 - 20 minutes to get to the GRUB menu. This ihandle caching is not possible
without correctly having the canonical disk name.
When available, this driver also tries to use the deblocker #blocks and
a way of determining the disk size.
Finally and probably most importantly, this new driver is also capable of
seeing all partitions on a GPT disk. With the old driver, the GPT
partition table can not be read and only the first partition on the disk
can be seen.
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Split up some of the functionality in grub_machine_get_bootlocation into
grub_ieee1275_get_boot_dev. This will allow for code reuse in a follow on
patch.
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
IEEE Std 1275-1994 Standard for Boot (Initialization Configuration)
Firmware: Core Requirements and Practices
3.8.3 deblocker support package
Any package that uses the "deblocker" support package must define
the following method, which the deblocker uses as a low-level
interface to the device
block-size ( -- block-len ) Return "granularity" for accesses to this
device.
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
IEEE 1275-1994 Standard for Boot (Initialization Configuration)
Firmware: Core Requirements and Practices
E.3.2.2 Bus-specific methods for bus nodes
A package implementing the scsi-2 device type shall implement the
following bus-specific method:
no-data-command ( cmd-addr -- error? )
Executes a simple SCSI command, automatically retrying under
certain conditions. cmd-addr is the address of a 6-byte command buffer
containing an SCSI command that does not have a data transfer phase.
Executes the command, retrying indefinitely with the same retry criteria
as retry-command.
error? is nonzero if an error occurred, zero otherwise.
NOTE no-data-command is a convenience function. It provides
no capabilities that are not present in retry-command, but for
those commands that meet its restrictions, it is easier to use.
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
IEEE 1275-1994 Standard for Boot (Initialization Configuration)
Firmware: Core Requirements and Practices
E.3.2.2 Bus-specific methods for bus nodes
A package implementing the scsi-2 device type shall implement the
following bus-specific method:
set-address ( unit# target# -- )
Sets the SCSI target number (0x0..0xf) and unit number (0..7) to which
subsequent commands apply.
This function is for devices with #address-cells == 2
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Convert physical address to text unit-string.
Convert phys.lo ... phys-high, the numerical representation, to unit-string,
the text string representation of a physical address within the address
space defined by this device node. The number of cells in the list
phys.lo ... phys.hi is determined by the value of the #address-cells property
of this node.
This function is for devices with #address-cells == 4
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
decode-unit ( addr len -- phys.lo ... phys.hi )
Convert text unit-string to physical address.
Convert unit-string, the text string representation, to phys.lo ... phys.hi,
the numerical representation of a physical address within the address space
defined by this device node. The number of cells in the list
phys.lo ... phys.hi is determined by the value of the #address-cells
property of this node.
This function is for devices with #address-cells == 4
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
It enables net boot even when there is no bootp/dhcp server.
* grub-core/net/drivers/ieee1275/ofnet.c: Add grub_ieee1275_parse_bootpath and
call it at grub_ieee1275_net_config_real.
* grub-core/kern/ieee1275/init.c: Add bootpath to grub_ieee1275_net_config.
* include/grub/ieee1275/ieee1275.h: Likewise.
* grub-core/disk/ieee1275/ofdisk.c (grub_ofdisk_open): Get the block
size of the disk.
* (grub_ofdisk_get_block_size): New function.
* (grub_ofdisk_prepare): Use the correct block size.
* (grub_ofdisk_read): Likewise.
* (grub_ofdisk_write): Likewise.
* include/grub/ieee1275/ofdisk.h (grub_ofdisk_get_block_size):
New proto.
GRUB_IEEE1275_FLAG_CURSORONOFF_ANSI_BROKEN on mac.
* grub-core/term/ieee1275/console.c (grub_console_init_lately): Use
ieee1275-nocursor if GRUB_IEEE1275_FLAG_CURSORONOFF_ANSI_BROKEN is set.
* grub-core/term/terminfo.c (grub_terminfo_set_current): Add new type
ieee1275-nocursor.
* include/grub/ieee1275/ieee1275.h (grub_ieee1275_flag): New value
GRUB_IEEE1275_FLAG_CURSORONOFF_ANSI_BROKEN.
* include/grub/ieee1275/ieee1275.h (grub_ieee1275_flag): New enum values
GRUB_IEEE1275_FLAG_NO_OFNET_SUFFIX and
GRUB_IEEE1275_FLAG_VIRT_TO_REAL_BROKEN.
* grub-core/net/drivers/efi/efinet.c (grub_efinet_findcards): Use
txbufsize.
* grub-core/kern/ieee1275/cmain.c (grub_ieee1275_find_options): Use
compatible property to check for macs. Set
GRUB_IEEE1275_FLAG_NO_OFNET_SUFFIX and
GRUB_IEEE1275_FLAG_VIRT_TO_REAL_BROKEN on macs.
* grub-core/net/drivers/ieee1275/ofnet.c (card_open): Don't add suffix
if GRUB_IEEE1275_FLAG_NO_OFNET_SUFFIX is set.
(send_card_buffer): Use txbuf.
(grub_ofnet_findcards): Allocate txbuf. Simplify code flow and move
nested function out of the parent while on it.
GRUB_IEEE1275_FLAG_NO_TREE_SCANNING_FOR_DISKS is set.
* grub-core/kern/ieee1275/cmain.c (grub_ieee1275_find_options): Set
GRUB_IEEE1275_FLAG_NO_TREE_SCANNING_FOR_DISKS on IBM hardware.
* include/grub/ieee1275/ieee1275.h (grub_ieee1275_flag): New enum value
GRUB_IEEE1275_FLAG_NO_TREE_SCANNING_FOR_DISKS.
* include/grub/ieee1275/ieee1275.h (grub_ieee1275_flag): New enum value
GRUB_IEEE1275_FLAG_BROKEN_ADDRESS_CELLS.
* grub-core/kern/ieee1275/mmap.c (grub_machine_mmap_iterate): Ignore
adress_cells and size:cells if GRUB_IEEE1275_FLAG_BROKEN_ADDRESS_CELLS
is set.
* grub-core/kern/ieee1275/cmain.c (grub_ieee1275_find_options): Set
GRUB_IEEE1275_FLAG_BROKEN_ADDRESS_CELLS on powermacs.
Change ofnet.c to disknet.c and remove almost all ieee1275 specific code.
Create grub_net_malloc to handle iee1275 memory issues in a temporary solution.
GRUB_IEEE1275_FLAG_HAS_CURSORONOFF when appropriate.
* grub-core/term/ieee1275/ofconsole.c (grub_ofconsole_setcursor):
Use terminfo and don't use cursor-on/cursor-off unless it's known
to work.
* include/grub/ieee1275/ieee1275.h (grub_ieee1275_flag): New element
GRUB_IEEE1275_FLAG_HAS_CURSORONOFF.
an to list its information with command ls.
* fs/ieee1275/ofnet.c (grub_ofnet_open): parse parameters to determine netdisk data
* fs/ieee1275/ofnet.c (grub_ofnet_close): dealloc netdisk data
* include/grub/disk.h: added struct grub_netdisk_data
* include/grub/ieee1275/ofnet.h: added newline
* kern/disk.c (grub_disk_open): ignore partition check for netdisk
* normal/misc.c (grub_normal_print_device_info): added support to list netdisk information
GRUB_IEEE1275_FLAG_NO_PRE1_5M_CLAIM.
* kern/ieee1275/cmain.c (grub_ieee1275_find_options): Set
GRUB_IEEE1275_FLAG_NO_PRE1_5M_CLAIM on qemu.
* kern/ieee1275/init.c (grub_claim_heap): Don0t allocate below
1.5MiB if GRUB_IEEE1275_FLAG_NO_PRE1_5M_CLAIM is set.
Fix over-4GiB seek on sparc64.
* include/grub/ieee1275/ieee1275.h (grub_ieee1275_seek):
Replace pos_i and pos_lo with pos. All users updated.
* include/grub/powerpc/ieee1275/ieee1275.h (GRUB_IEEE1275_CELL_SIZEOF):
New constant.
* include/grub/sparc64/ieee1275/ieee1275.h (GRUB_IEEE1275_CELL_SIZEOF):
Likewise.
* kern/ieee1275/ieee1275.c (grub_ieee1275_seek): Split pos into pos_hi
and pos_lo.
grub_devalias_iterate() result instead of unconditional 0.
* disk/ieee1275/ofdisk.c (grub_ofdisk_iterate): Likewise.
Also, capture hook return value, either directly or via
grub_children_iterate(), and propagate to caller.
* include/grub/ieee1275/ieee1275.h (grub_devalias_iterate,
grub_children_iterate): Return value is now 'int' instead of
'grub_err_t'.
* kern/ieee1275/openfw.c (grub_children_iterate): Fix to behave
like a proper iterator, stopping when hooks return non-zero.
(grub_devalias_iterate): Likewise.
slots are of type grub_ieee1275_cell_t.
(grub_nand_read): Likewise.
* kern/ieee1275/ieee1275.c (IEEE1275_PHANDLE_INVALID,
IEEE1275_IHANDLE_INVALID): Use grub_ieee1275_cell_t since these
macros are used to compare values in arg/ret block of the call.
(grub_ieee1275_finddevice, grub_ieee1275_get_property,
grub_ieee1275_next_property, grub_ieee1275_get_property_length,
grub_ieee1275_instance_to_package, grub_ieee1275_package_to_path,
grub_ieee1275_instance_to_path, grub_ieee1275_write,
grub_ieee1275_read, grub_ieee1275_seek, grub_ieee1275_peer,
grub_ieee1275_child, grub_ieee1275_parent, grub_ieee1275_open,
grub_ieee1275_close, grub_ieee1275_set_property,
grub_ieee1275_set_color): All ieee1275 call arg slots are of type
grub_ieee1275_cell_t.
* kern/ieee1275/openfw.c (grub_map): Likewise.
* include/grub/ieee1275/ieee1275.h (grub_ieee1275_ihandle_t,
grub_ieee1275_phandle_t): Define as grub_unit32_t type.
grub_machine_mmap_iterate() interface (fixes a recently-introduced
build problem on i386-ieee1275):
* kern/ieee1275/openfw.c (grub_available_iterate): Moved from here ...
* kern/ieee1275/mmap.c (grub_machine_mmap_iterate): ... here. Add third
parameter `type'. Update all users of this function.
* conf/i386-ieee1275.rmk (kernel_elf_SOURCES): Add
`kern/ieee1275/mmap.c'.
* kern/ieee1275/init.c
* include/grub/ieee1275/ieee1275.h (grub_available_iterate): Replace
with ...
(grub_machine_mmap_iterate): ... this.
* include/grub/i386/pc/memory.h (grub_machine_mmap_iterate): Change
return type to `grub_err_t'. Update all implementations of this
function prototype.
* include/grub/i386/coreboot/memory.h (grub_machine_mmap_iterate):
Likewise.
* include/grub/ieee1275.h (grub_ieee1275_flag): New constant
GRUB_IEEE1275_FLAG_CANNOT_INTERPRET, GRUB_IEEE1275_FLAG_FORCE_CLAIM
and GRUB_IEEE1275_FLAG_NO_ANSI.
* kern/ieee1275/cmain.c (grub_ieee1275_find_options): Set flag
GRUB_IEEE1275_FLAG_CANNOT_INTERPRET, GRUB_IEEE1275_FLAG_FORCE_CLAIM
and GRUB_IEEE1275_FLAG_NO_ANSI for Open Hackware.
* kern/ieee1275/ieee1275.c (grub_ieee1275_interpret): Return
immediately if GRUB_IEEE1275_FLAG_CANNOT_INTERPRET is set.
* kern/ieee1275/init.c (grub_claim_heap): Claim memory directly if
GRUB_IEEE1275_FLAG_FORCE_CLAIM is set.
* term/ieee1275/ofconsole.c (grub_ofconsole_writeesc): Don't output
esc sequence on non ANSI terminal.
(grub_ofconsole_gotoxy): Emulate backspace key on non ANSI terminal.
* util/elf/grub-mkimage.c (add_segments): Move ELF header to the
beginning of file.
