On some cases the first 440 bytes of MBR are used to keep an additional
information for ROM boot loader. 'gpt write' command doesn't preserve
that area and makes boot code gone.
Preserve boot code area when run 'gpt write' command.
Signed-off-by: Vincent Tinelli <vincent.tinelli@intel.com>
Signed-off-by: Brennan Ashton <brn@deako.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
We convert CONFIG_PARTITION_UUIDS to Kconfig first. But in order to cleanly
update all of the config files we must also update CMD_PART and CMD_GPT to also
be in Kconfig in order to avoid complex logic elsewhere to update all of the
config files.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
So far partition search by name has been supported only on the EFI partition
table. This patch extends the search to all partition tables.
Rename part_get_info_efi_by_name() to part_get_info_by_name(), move it from
part_efi.c into part.c and make it a generic function which traverses all part
drivers and searches all partitions (in the order given by the linked list).
For this a new variable struct part_driver.max_entries is added, which limits
the number of partitions searched. For EFI this was GPT_ENTRY_NUMBERS.
Similarly the limit is defined for DOS, ISO, MAC and AMIGA partition tables.
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Steve Rae <steve.rae@raedomain.com>
The calculation of "dev_desc->lba - 34 - 1 - offset" is not correct for
size '-', because both fist_usable_lba and last_usable_lba will remain
34 sectors.
We can simply use 0 for size '-' because the part_efi module will decode
the size and auto extend the size to maximum available size.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
This fixes a mismatch between the %zu format and the type used on sandbox.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
the last value acceptable value for offset is last_usable_lba + 1
and not last_usable_lba - 1
issue found with SDCARD partition commands on u-boot 2015.10
but this part of code don't change
1- create GPT partion on all the card
> gpt write mmc 0 name=test,start=0,size=0
> part list mmc 0
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000022 0x003a9fde "test"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
type: data
guid: b710eb04-45b9-e94a-8d0b-21458d596f54
=> Start = 0x22*512 = 0x4400
=> Size = (0x003a9fde-0x22+1) * 512 = 0x753F7A00
2- try to recreate the same partition with the next command
(block size:512 bytes = 0x200)
> gpt write mmc 0 name=test,start=0x4400,size=0x753F7A00
Writing GPT: Partitions layout exceds disk size
> gpt write mmc 0 name=test,start=0x4400,size=0x753F7800
Writing GPT: Partitions layout exceds disk size
> gpt write mmc 0 name=test,start=0x4400,size=0x753F7600
Writing GPT: success!
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000022 0x003a9fdc "test"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
type: data
guid: 36ec30ef-7ca4-cd48-97cd-ea9fb95185d0
the max LBA when the size is indicated (0x003a9fdc) is lower than
when u-boot compute the max allowed value with size=0 (0x003a9fde)
in the code :
/* partition ending lba */
if ((i == parts - 1) && (partitions[i].size == 0))
/* extend the last partition to maximuim */
gpt_e[i].ending_lba = gpt_h->last_usable_lba;
else
gpt_e[i].ending_lba = cpu_to_le64(offset - 1);
so offset = gpt_h->last_usable_lba + 1 is acceptable !
but the test (offset >= last_usable_lba) cause the error
END
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>disk: part_efi: fix check of the max partition size
the last value acceptable value for offset is (last_usable_lba + 1)
and not (last_usable_lba - 1)
issue found with SDCARD partition commands on u-boot 2015.10
but this part of code don't change
1- I create GPT partion on all the card (start and size undefined)
> gpt write mmc 0 name=test,start=0,size=0
> part list mmc 0
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000022 0x003a9fde "test"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
type: data
guid: b710eb04-45b9-e94a-8d0b-21458d596f54
=> Start = 0x22*512 = 0x4400
=> Size = (0x003a9fde-0x22+1) * 512 = 0x753F7A00
2- I try to recreate the same partition with the command gpt write
and with start and size values (block size:512 bytes = 0x200)
> gpt write mmc 0 name=test,start=0x4400,size=0x753F7A00
Writing GPT: Partitions layout exceds disk size
> gpt write mmc 0 name=test,start=0x4400,size=0x753F7800
Writing GPT: Partitions layout exceds disk size
> gpt write mmc 0 name=test,start=0x4400,size=0x753F7600
Writing GPT: success!
I check the partition created :
> part list mmc 0
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000022 0x003a9fdc "test"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
type: data
guid: 36ec30ef-7ca4-cd48-97cd-ea9fb95185d0
=> but the max LBA when the size is indicated (0x003a9fdc) is lower than
when u-boot compute the max allowed value with size=0 (0x003a9fde)
3- in the code, just after my patch, line 446
/* partition ending lba */
if ((i == parts - 1) && (partitions[i].size == 0))
/* extend the last partition to maximuim */
gpt_e[i].ending_lba = gpt_h->last_usable_lba;
else
gpt_e[i].ending_lba = cpu_to_le64(offset - 1);
so offset = gpt_h->last_usable_lba + 1 is acceptable !
(it the value used when size is 0)
but today the test (offset >= last_usable_lba) cause the error
my patch only solve this issue
END
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
This cannot be NULL since part_get_info() calls this function and requires
it to be non-NULL.
Reported-by: Coverity (CID: 138497)
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
This cannot be NULL since part_print() calls this function and requires it
to be non-NULL.
Reported-by: Coverity (CID: 138498)
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Rename these functions so that part_ is at the start. This more clearly
identifies these functions as partition functions.
Signed-off-by: Simon Glass <sjg@chromium.org>
To ease conversion to driver model, add helper functions which deal with
calling each block device method. With driver model we can reimplement these
functions with the same arguments.
Use inline functions to avoid increasing code size on some boards.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
This is a device number, and we want to use 'dev' to mean a driver model
device. Rename the member.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Rename three partition functions so that they start with part_. This makes
it clear what they relate to.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
We can use linker lists instead of explicitly declaring each function.
This makes the code shorter by avoiding switch() statements and lots of
header file declarations.
While this does clean up the code it introduces a few code issues with SPL.
SPL never needs to print partition information since this all happens from
commands. SPL mostly doesn't need to obtain information about a partition
either, except in a few cases. Add these cases so that the code will be
dropped from each partition driver when not needed. This avoids code bloat.
I think this is still a win, since it is not a bad thing to be explicit
about which features are used in SPL. But others may like to weigh in.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Use 'struct' instead of a typdef. Also since 'struct block_dev_desc' is long
and causes 80-column violations, rename it to struct blk_desc.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
With format-security errors turned on, GCC picks up the use of sprintf with
a format parameter not being a string literal.
Simple uses of sprintf are also converted to use strcpy.
Signed-off-by: Ben Whitten <ben.whitten@gmail.com>
Acked-by: Wolfgang Denk <wd@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
This will allow the implementation to make use of data in the block_dev
structure beyond the base device number. This will be useful so that eMMC
block devices can encompass the HW partition ID rather than treating this
out-of-band. Equally, the existence of the priv field is crying out for
this patch to exist.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
The optional parameter bootable is added in gpt command to set the
partition attribute flag "Legacy BIOS bootable"
This flag is used in extlinux and so in with distro to select
the boot partition where is located the configuration file
(please check out doc/README.distro for details).
With this parameter, U-Boot can be used to create the boot partition
needed for device using distro.
example of use:
setenv partitions "name=u-boot,size=60MiB;name=boot,size=60Mib,bootable;\
name=rootfs,size=0"
> gpt write mmc 0 $partitions
> part list mmc 0
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000022 0x0001e021 "u-boot"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
guid: cceb0b18-39cb-d547-9db7-03b405fa77d4
2 0x0001e022 0x0003c021 "boot"
attrs: 0x0000000000000004
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
guid: d4981a2b-0478-544e-9607-7fd3c651068d
3 0x0003c022 0x003a9fde "rootfs"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
guid: 6d6c9a36-e919-264d-a9ee-bd00379686c7
> part list mmc 0 -bootable devplist
> printenv devplist
devplist=2
Then the distro scripts will search extlinux in partition 2
and not in the first partition.
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
This commit provides definition and declaration of GPT verification
functions - namely gpt_verify_headers() and gpt_verify_partitions().
The former is used to only check CRC32 of GPT's header and PTEs.
The latter examines each partition entry and compare attributes such as:
name, start offset and size with ones provided at '$partitions' env
variable.
Signed-off-by: Lukasz Majewski <l.majewski@majess.pl>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Przemyslaw Marczak <p.marczak@samsung.com>
short strings can be used in type parameter of gpt command
to replace the guid string for the types known by u-boot
partitions = name=boot,size=0x6bc00,type=data; \
name=root,size=0x7538ba00,type=linux;
gpt write mmc 0 $partitions
and they are also used to display the type of partition
in "part list" command
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000022 0x0000037f "boot"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
type: data
guid: d117f98e-6f2c-d04b-a5b2-331a19f91cb2
2 0x00000380 0x003a9fdc "root"
attrs: 0x0000000000000000
type: 0fc63daf-8483-4772-8e79-3d69d8477de4
type: linux
guid: 25718777-d0ad-7443-9e60-02cb591c9737
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
code under flag CONFIG_PARTITION_TYPE_GUID
add parameter "type" to select partition type guid
example of use with gpt command :
partitions = uuid_disk=${uuid_gpt_disk}; \
name=boot,size=0x6bc00,uuid=${uuid_gpt_boot}; \
name=root,size=0x7538ba00,uuid=${uuid_gpt_root}, \
type=0fc63daf-8483-4772-8e79-3d69d8477de4;
gpt write mmc 0 $partitions
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
Now that we have a new header file for cache-aligned allocation, we should
move the stack-based allocation macro there also.
Signed-off-by: Simon Glass <sjg@chromium.org>
According to the UEFI Spec (Table 16, section 5.2.3 of the version 2.4 Errata
B), the protective MBR partition record size must be set to the size of the
disk minus one, in LBAs.
However, the current code was setting the size as the total number of LBAs on
the disk, resulting in an off-by-one error.
This confused the AM335x ROM code, and will probably confuse other tools as
well.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Implement a feature to allow fastboot to write the downloaded image
to the space reserved for the Protective MBR and the Primary GUID
Partition Table.
Additionally, prepare and write the Backup GUID Partition Table.
Signed-off-by: Steve Rae <srae@broadcom.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
[Test HW: Exynos4412 - Trats2]
Now that we have inttypes.h, use it in a few more places to avoid compiler
warnings on sandbox when building on 64-bit machines.
Signed-off-by: Simon Glass <sjg@chromium.org>
- update the comments regarding lbaint_t usage
- cleanup casting of values related to the lbaint_t type
- cleanup of a type that requires a u64
Tested on little endian ARMv7 and ARMv8 configurations
Signed-off-by: Steve Rae <srae@broadcom.com>
Check the Backup GPT table if the Primary GPT table is invalid.
Renamed "Secondary GPT" to "Backup GPT" as per:
UEFI Specification (Version 2.3.1, Errata A)
Signed-off-by: Steve Rae <srae@broadcom.com>
Changes in lib/uuid.c to:
- uuid_str_to_bin()
- uuid_bin_to_str()
New parameter is added to specify input/output string format in listed functions
This change allows easy recognize which UUID type is or should be stored in given
string array. Binary data of UUID and GUID is always stored in big endian, only
string representations are different as follows.
String byte: 0 36
String char: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
string UUID: be be be be be
string GUID: le le le be be
This patch also updates functions calls and declarations in a whole code.
Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: trini@ti.com
This commit introduces cleanup for uuid library.
Changes:
- move uuid<->string conversion functions into lib/uuid.c so they can be
used by code outside part_efi.c.
- rename uuid_string() to uuid_bin_to_str() for consistency with existing
uuid_str_to_bin()
- add an error return code to uuid_str_to_bin()
- update existing code to the new library functions.
Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: trini@ti.com
The calloc() call was allocating space for the sizeof the struct
pointer rather than for the struct contents.
Besides, since this buffer is passed to mmc for writing and some
platforms may use cache, the legacy_mbr struct should be cache-aligned.
Signed-off-by: Hector Palacios <hector.palacios@digi.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
the gpt_pte wasn't being freed if it was checked against an invalid
partition. The resulting memory leakage could make it impossible
to repeatedly attempt to load non-existent files in a script.
Also, downgrade the message for not finding an invalid partition
from a printf() to a debug() so as to minimize message spam in
perfectly normal situations.
Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>
With CONFIG_SYS_64BIT_LBA, lbaint_t gets defined as a 64-bit type,
which is required to represent block numbers for storage devices that
exceed 2TiB (the block size usually is 512B), e.g. recent hard drives
We now use lbaint_t for partition offset to reflect the lbaint_t change,
and access partitions beyond or crossing the 2.1TiB limit.
This required changes to signature of ext4fs_devread(), and type of all
variables relatives to block sector.
ext2/ext4 fs uses logical block represented by a 32 bit value. Logical
block is a multiple of device block sector. To avoid overflow problem
when calling ext4fs_devread(), we need to cast the sector parameter.
Signed-off-by: Frédéric Leroy <fredo@starox.org>
Make sure to never access beyond bounds of either EFI partition name
or DOS partition name. This situation is happening:
part.h: disk_partition_t->name is 32-byte long
part_efi.h: gpt_entry->partition_name is 36-bytes long
The loop in part_efi.c copies over 36 bytes and thus accesses beyond
the disk_partition_t->name .
Fix this by picking the shortest of source and destination arrays and
make sure the destination array is cleared so the trailing bytes are
zeroed-out and don't cause issues with string manipulation.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@ti.com>
Cc: Simon Glass <sjg@chromium.org>
Disks beyond 2T in size use blocksizes of 4096 bytes. However a lot of
code in u-boot still assumes a 512 byte blocksize.
This patch fixes the handling of GPTs.
Signed-off-by: Egbert Eich <eich@suse.com>
start_sect is not aligned to a 4 byte boundary thus causing exceptions
on ARM platforms. Access this field via the get_unaligned_le32 macro.
Signed-off-by: Marc Dietrich <marvin24@gmx.de>
This set of ifdefs is used in a number of places. Move its definition
somewhere common so it doesn't have to be repeated.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Tom Rini <trini@ti.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
The restoration of GPT table (both primary and secondary) is now possible.
Function 'gpt_restore' presents example of partition restoration process.
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Custom definitions of le_XX_to_int functions have been replaced with
standard ones, defined at <compiler.h>
Replacement of several GPT related structures members with ones
indicating its endianness and proper size.
Signed-off-by: Chang Hyun Park <heartinpiece@outlook.com>
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This change addresses a few printf-formatting errors, and a typecast
error.
Signed-off-by: Taylor Hutt <thutt@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
A partition is considered bootable if it either has the "legacy BIOS
bootable" flag set, or if the partition type UUID matches the standard
"system" type.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
When printing the EFI partition table, print the raw attributes. Convert
struct gpt_entry_attributes to a union to allow raw access.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
When printing the partition table, print the partition type UUID and the
individual partition UUID. Do this unconditionally, since partition UUIDs
are useful.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
The partition name is a long variable-length string. Move it last on
the line to ensure consistent layout and that the entries align with
the "header" line. Also, surround it in quotes, so if it's empty, it's
obvious that something is still being printed.
Also, change the case of the LBA numbers; lower-case looks nicer in my
opinion, and will be more consistent with the UUID printing that is
added later in this series.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Simplify the partition printing loop in print_part_efi() to bail out
early when the first invalid partition is found, rather than indenting
the whole body of the loop. This simplifies later patches.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Each EFI partition table entry contains a UUID. Extend U-Boot's struct
disk_partition to be able to store this information, and modify
get_partition_info_efi() to fill it in.
The implementation of uuid_string() was derived from the Linux kernel,
tag v3.6-rc4 file lib/vsprintf.c function uuid_string().
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Enhance get_partition_info_efi() to range-check the partition number.
This prevents invalid partitions being accessed, and prevents access
beyond the end of the gpt_pte[] array.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Fix errors noticed after enabling CONFIG_EFI_PARTITION
for the OMAP3 EVM board:
part_efi.c: In function 'print_part_efi':
part_efi.c:133:5: warning: passing argument 3 of 'is_gpt_valid'
from incompatible pointer type
part_efi.c:95:12: note: expected 'struct gpt_header *' but arg
ument is of type 'struct gpt_header **'
part_efi.c: In function 'get_partition_info_efi':
part_efi.c:173:4: warning: passing argument 3 of 'is_gpt_valid
' from incompatible pointer type
part_efi.c:95:12: note: expected 'struct gpt_header *' but arg
ument is of type 'struct gpt_header **'
part_efi.c: In function 'alloc_read_gpt_entries':
part_efi.c:384:18: error: 'CONFIG_SYS_CACHELINE_SIZE' undeclare
d (first use in this function)
Signed-off-by: Sanjeev Premi <premi@ti.com>
Cc: Tom Rini <tom.rini@gmail.com>
Cc: Anton staaf <robotboy@chromium.org>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Commit deb5ca8027 "disk: part_efi: fix
**pgpt_pte == NULL" modified the code to pass "&gpt_head" to
is_gpt_valid() rather than the previous "gpt_head". However, gpt_head
is a pointer to the buffer, not the actual buffer, since it was allocated
using ALLOC_CACHE_ALIGN_BUFFER. This caused is_gpt_valid() to read the
disk block onto the stack rather than into the buffer, causing the
code to fail.
This change reverts that portion of the commit mentioned above.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Doug Anderson <dianders@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Tested-by: Anton Staaf <robotboy@chromium.org>
Code was setting **pgpt_pte == NULL, which meant that the pointer
to the gpt_pte would be stored at RAM address 00000000. This 'worked'
on T20 (SDRAM starts @ 0x00000000), but hung gpt/EFI access on T30
(SDRAM starts @ 0x80000000).
Signed-off-by: Tom Warren <twarren@nvidia.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Currently part_efi.c allocates buffers for the gpt_header, the
legacy_mbr, and the pte (partition table entry) that may be
incorrectly aligned for DMA operations.
This patch uses ALLOC_CACHE_ALIGN_BUFFER for the stack allocated
buffers and memalign to replace the malloc of the pte.
Signed-off-by: Anton Staaf <robotboy@chromium.org>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Mflash is fusion memory device mainly targeted consumer eletronic and
mobile phone.
Internally, it have nand flash and other hardware logics and supports
some different operation (ATA, IO, XIP) modes.
IO mode is custom mode for the host that doesn't have IDE interface.
(Many mobile targeted SoC doesn't have IDE bus)
This driver support mflash IO mode.
Followings are brief descriptions about IO mode.
1. IO mode based on ATA protocol and uses some custom command. (read
confirm, write confirm)
2. IO mode uses SRAM bus interface.
Signed-off-by: unsik Kim <donari75@gmail.com>
The ending LBA is inclusive. Hence, the partition size should be
((ending-LBA + 1) - starting-LBA) to get the proper partition size.
This is confirmed against the results from the parted tool.
(e.g. use parted /dev/sda -s unit S print) and observe the size.
Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
The GUID (Globally Unique Identifier) Partition Table (GPT) is a part
of EFI. See http://en.wikipedia.org/wiki/GUID_Partition_Table
Based on linux/fs/partitions/efi.[ch]
Signed-off-by: Richard Retanubun <RichardRetanubun@RugggedCom.com>
